December 2011

06/12/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The flow of material in the spiral arms of disk galaxies. Ordered or Chaotic motion?
Panos Patsis (Academy of Athens)

Abstract

The stellar flow in the arms of spiral galaxies is qualitatively different among different morphological types. The stars that reinforce the spiral arms can be either participating in an ordered or in a chaotic flow. Ordered flows are associated with normal (non-barred) spiral galaxies. Typically they are described with precessing ellipses corresponding to stable periodic orbits at successive energies (Jacobi constants). Contrarily, the spiral arms in barred-spiral systems may be supported by stars in chaotic motion. The trajectories of these stars are associated with the invariant manifolds of the unstable Lagrangian points at the two ends of the bar. We find that the spirals and the outer parts of the bars share the same orbital content. However, we have found also barred-spiral systems with spirals inside corotation, consisting mainly by chaotic orbits. The talk will present the differences between the two flows of material on the galactic disks.

November 2011

29/11/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Hungry Galaxies: Coeval Massive Black Hole and Galaxy Formation at High Redshift
Nick Seymour (CSIRO Astronomy & Space Science, Australia)

Abstract

Across cosmic time, powerful radio sources are robust beacons of the most massive galaxies in the Universe. Hence, they trace the co-formation of the massive galaxies and their central black holes as well as the collapse of the most massive dark matter halos. I shall present results from a comprehensive Spitzer/infrared imaging of a sample of 70 high redshift radio galaxies (L3GHz>10^{26} W/Hz, 1
22/11/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The Herschel Reference Survey
Alessandro Boselli (Lab. d'Astrophysique de Marseille)

Abstract

As part of the Herschel guaranteed time we defined a project aimed at studying the dust emission properties of a complete, volume limited (15
15/11/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — An Infrared View of Galaxy Evolution
Karina Caputi (University of Edinburgh)

Abstract

I will review our most recent results of galaxy evolution at high redshifts, based on the analysis of deep infrared galaxy surveys carried out with major ground-based and space telescopes. I will particularly focus on the study of galaxy stellar mass assembly, and the buildup of massive galaxies over the first few billion years of cosmic time. I will also present our discovery of previously unrecognised galaxy populations at high redshifts using some of the deepest infrared maps. Finally, I will summarise the wide range of infrared galaxy surveys that are now in progress, and discuss their fundamental role to improve our understanding of galaxy evolution, as well as plan the first science programmes that will be conducted with future infrared telescopes, such as the JWST and SPICA.
08/11/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Cosmography with lensed quasars
Cecile Faure (Lab. d'Astrophysique, EPFL, Obs. de Sauverny, Switzerland)

Abstract

Strong gravitational lensing offers a unique opportunity to map the mass distribution in galaxies and to measure the Hubble constant, Ho, at cosmological distance and independent of any standard candle. The COSMOGRAIL collaboration is monitoring about 30 lensed quasars since 2004 with the goal of measuring the so-called "time delays" between the lensed images, a quantity directly related to Ho and to the slope of the mass distribution in lensing galaxies. I will show recent results of our monitoring campaign and improved tools to measure the time-delays and model the lenses.

October 2011

25/10/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The role of deep radio imaging in a multi-wavelength Universe
Edo Ibar (UK Astronomy Technology Centre)

Abstract

We have employed the Giant Metrewave Radio Telescope and the Very Large Array to image a few legacy fields such as GOODS, Lockman, and SXDF, reaching noise levels of 5-15 uJy/beam. These images in combination with deep multi-wavelength observations have allowed us to describe the very faint sub-mJy radio population -- found to be mainly composed by star-forming galaxies and radio-faint AGNs extending up to z~3. These deep radio observations play an important role in characterising sub-millimetre galaxies; to pinpoint the galaxy and to provide a proxy for the FIR/radio correlation - therefore to best exploit and drive the present Herschel science. In this talk I will show how our data have allowed us to pursue a wide variety of research projects; the far-infrared/radio correlation as proved by Herschel, the radio spectral index of submm galaxies and the nature of the faint sub-mJy radio population. These new findings are providing an important information for what will be observed and the limitations for the upcoming large radio surveys.
21/10/11 (Friday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Massively Multiplexed IFU surveys: dissecting galaxy evolution
Scott Croom (University of Sydney)

Abstract

Galaxies are intrinsically complex systems, with multiple components (disk, bulge, halo, black hole, gas, dust, stars etc) which interact with each other in non-trivial ways. Major steps forward have been possible using massive galaxy surveys, such as 2dFGS and SDSS, but these are fundamentally limited by their having only a single aperture per object. I will present the arguments as to why the next major leap forward in our understanding of galaxy formation will be enabled by large surveys containing spatially resolved spectroscopy for thousands of galaxies. This will be driven by new instrumentation which will enable multi-object IFU observations. I will describe the Sydney-AAO Multi-object IFU (SAMI), a multi-object IFU system developed jointly by the University of Sydney and the Australian Astronomical Observatory (AAO), using a new astrophotonic development: hexabundle optical fibres. This system recently had first light on the AAT and already shows the potential for major surveys.
18/10/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The AMBRE Project: Stellar Parameterisation of the ESO:FEROS Archived Spectra
Clare Worley (Observatoire de la Cote d'Azur)

Abstract

The AMBRE Project is a collaboration between the European Southern Observatory (ESO) and the Observatoire de la Cote d'Azur (OCA) that has been established in order to carry out the determination of stellar parameters (effective temperature, surface gravity, global metallicity and individual chemical abundances) for the archived spectra of four ESO spectrographs: FEROS, UVES, HARPS and FLAMES/GIRAFFE. We have built an automated analysis pipeline that carries out normalisation and correction procedures on the archived spectra and then feeds them into the stellar parameterisation algorithm, MATISSE, which has been developed at OCA. This analysis pipeline has been designed so that is it easily tailored to the archived spectra of each spectrograph. I will present a description of the AMBRE analysis pipeline and the results of the stellar parameter determination of the FEROS archived spectra as well as some examples of galactic archaeology research that will be possible with the stellar parameters for the ESO archived spectra.
06/10/11 (Thursday)
12:30, D30 | ESO Garching
Lunch Talk
Talk — Atmospheric water vapour measurement campaigns for E-ELT site characterization
Richard Querel (Universidad de Chile)

Abstract

In 2009, in the context of E-ELT site characterization, our team conducted a set of dedicated campaigns to measure precipitable water vapour (PWV) over La Silla, Paranal and APEX. The goal of the campaigns was to compare contemporaneous ground-based measurement techniques to radiosonde launches and overhead satellite estimates of PWV. ESO facility instruments provided high resolution telluric absorption/emission spectra at high cadence in parallel with continuous infrared radiometer (IRMA) measurements. A historical analysis of PWV over the sites was also performed by processing archival data. Based in part on the results from these campaigns the E-ELT site selection advisory committee recommended the Armazones site and the VISIR upgrade project is currently deploying a water vapour monitor for permanent operation on Paranal.
04/10/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The Dynamical Evolution of Newborn Triple Systems
Bo Reipurth (University of Hawaii)

Abstract

Recent large surveys have established improved statistics of binarity and multiplicity of embedded low-mass stars, which not only have demonstrated the known excess of binaries among newborn stars, but also have uncovered a surprising excess of wide companions. A new set of extensive numerical N-body simulations of stellar embryos accreting from dense cloud cores have been able to reproduce the main features of the observations, and have uncovered a wide range of dynamical behaviors, which have unexpected connections to various poorly understood phenomena in early stellar evolution, including FUor eruptions and the formation of spectroscopic binaries.

September 2011

27/09/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — HOPS: the H2O southern Galactic Plane Survey
Andrew Walsh (James Cook University, Australia)

Abstract

I will summarise early results of HOPS which has recently completed observations on the Mopra radiotelescope in Australia. HOPS has covered 100 square degrees of the Galactic plane in the 12mm band, including observations of water masers, NH3 inversion transitions, HCCCN, radio recombination and methanol spectral lines. We have found 540 water masers, of which nearly two-thirds are new detections. We also find around 700 NH3 clumps, as well as widespread detections of HCCCN and occasional detections of Class I methanol masers and other spectral lines. It is our intention that the HOPS data base can be used as a map of high density gas in the southern Galaxy, particularly as a finding chart for ALMA.
20/09/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Cosmic Evolution in the Australia Telescope Large Area Survey
Minnie Mao (University of Tasmania)

Abstract

The Australia Telescope Large Area Survey (ATLAS) observes seven square degrees of sky down to 10 microJanskys at 1.4 GHz using the Australia Telescope Compact Array. The survey covers two fields to minimize cosmic variance; the Chandra Deep Field South (CDFS) and the European Large Area ISO Survey - S1 (ELAIS). My PhD focusses specifically on the cosmic evolution of radio sources in ATLAS. Using spectroscopic redshifts we obtained from the Anglo-Australian Telescope, we have studied the radio luminosity function for ATLAS sources. We have also identified and analysed wide-angle tailed galaxies in ATLAS and discovered a ~12 Mpc large-scale structure in ELAIS at z~0.2. Using deep far-infrared data from the FIDEL project we were able to study the far-infrared radio correlation in the eCDFS and we found no evidence for evolution out to redshifts of ~3.
13/09/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — 10 years of observing with an AO secondary - lessons learned
Morag Hastie (MMT Observatory)

Abstract

It has been known for over 20 years that using a deformable secondary mirror in a telescope to correct for atmospheric distortions has several advantages for scientific gain over conventional, bench-mounted, adaptive optic (AO) systems. Conventional AO systems increase the number of reflective surfaces into the telescope beam, which limits the capabilities of the system and the resultant image quality. However, until very recently, only one observatory in the world has had a working AO secondary in operation. The MMT Observatory in Arizona commissioned an AO secondary mirror in late 2002 and has worked in the intervening years to shepherd a proto-type technology into a facility class system. The AO secondary is now routinely used for science operations upwards of 60 nights every year with both the NGS and LGS systems. In the light of the increased use of AO secondaries at current (e.g. MMT, LBT, VLT) and proposed facilities (e.g GMT), it is timely for us to talk about the lessons that have been learned by the MMT observatory over the last 10 years. In my talk I will give an overview of the MMT's AO secondary but will concentrate on describing how the system performs, the improvements we are putting in place to increase performance and the operational "pot holes" which we have encountered over the years.
06/09/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Characterizing Precursors to Stellar Clusters with Herschel
Cara Battersby (Center for Astrophysics and Space Astronomy, University of Colorado)

Abstract

Massive stars and stellar clusters play a dominant role in shaping the Universe around us, yet their formation mechanism remains poorly understood. In this talk, I present results from the Herschel Infrared Galactic Plane Survey (Hi-GAL) and demonstrate how Hi-GAL can be used to identify potential proto-clusters throughout the Galaxy and help us learn more about the formation processes of stellar clusters and the massive stars that form within them. I present temperature and column density maps in the l=30 and l=59 degree Hi-GAL fields. Using these maps, I compare the physical properties of Infrared Dark Clouds (IRDCs; condensations so cold and dense that they obscure the bright Galactic mid-IR background - thought to be precursors to stellar clusters) to other dust continuum sources. I characterize the level of star formation activity in both populations of sources as well as how it correlates with temperature and column density, giving us some indication as to how these sources evolve.
05/09/11 (Monday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Adventures in Planet Formation
Chris Ormel (MPIA, Heidelberg)

Abstract

In the core accretion paradigm of planet formation, bodies grow large by sweeping up smaller bodies. The process is traditionally distinguished into two phases: i) the formation of planetesimals bodies out of a reservoir of primordial dust driven by contact (molecular) forces; and ii) the accretion of these planetesimals to protoplanets under their mutual gravitational attraction. After briefly addressing recent models regarding dust collisions in the pre-planetesimal phase, I will review the planetesimal accretion stage. Here gravitational focusing accelerates growth. Initially, growth proceeds in a runaway fashion (one body outpaces the rest in terms of mass) but, due to feedback effects in the form of dynamical stirring, passes into the much slower oligarchic growth phase thereafter. Using a new simulation method, I will present a new condition for the transition between runaway and oligarchic growth. Next, I will address the question how the emergent protoplanets do acquire their final solid mass: by sweepup of big planetesimal bodies or in a more convoluted setting that involves accretion of small particles.

August 2011

30/08/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Brewing Great Science with MALT90
Jill Rathborne (CSIRO Astronomy and Space Science, Australia)

Abstract

The Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey is a new, international project aimed at characterizing the physical and chemical evolution of high-mass star-forming cores. Exploiting the unique broad frequency range and fast-mapping capabilities of the Mopra 22-m Telescope, MALT90 will obtain 3′×3′ maps toward ~3000 point sources identified in the ATLASGAL 870 μm galactic plane survey. Because we can map 16 lines simultaneously with excellent spatial (38′′) and spectral (0.11km s−1) resolution, the data reveal a wealth of information about source morphologies, chemistry, and kinematics. In this talk I will outline the survey strategy, current status, showcase some early results, and discuss several exciting follow-up projects we have planned with ALMA.
25/08/11 (Thursday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Supershells as Molecular Cloud Factories in the Evolving ISM
Joanne Dawson (University of Tasmania)

Abstract

The last decade has seen the development of a new paradigm for molecular cloud formation, in which the compression, cooling and fragmentation of the atomic medium in large-scale colliding flows drives the formation of turbulent, star-forming molecular gas. Within the scope of physical systems covered by this theory are supershells – large loops, shells and cavities formed by the cumulative stellar feedback from OB clusters, which shape the ISM on scales of 100s of parsecs. I will report the results of CO(J=1-0) and HI 21cm line observations of the molecular and atomic ISM in two Galactic supershells, in order to examine both qualitatively and quantitatively the role they play in the formation, evolution, transport, disruption of molecular gas. Our observations image the ISM to resolutions of ~ 2pc (~2.5') over ~100 deg2 fields, revealing rich substructure in both tracers, and walls that are dominated by cold HI. A key result of this work is the measurement of an enhanced level of molecularization over the volumes of both objects, providing the first direct observational evidence of increased molecular cloud production due to the influence of supershells, and demonstrating that in the case of these two objects the global influence on the molecular ISM is a positive one. However, our observations also highlight another long-recognised fact – that the influence of shells may also be disruptive to molecular gas on local scales; driving the atomic- molecular transition in the opposite direction in pre-existing clouds disrupted by the shell’s passage. I will also briefly introduce GASKAP, an upcoming high spatial/spectral resolution survey of HI and OH in the Galaxy and Magellanic clouds. GASKAP's core aims are targeted on broad questions of ISM evolution and Galactic structure, and the physics and dynamics of the matter within our local Galactic system.
18/08/11 (Thursday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Atomic Spectroscopy at NIST for Astrophysical Applications
Gillian Nave (National Institute of Standards and Technology (NIST), Gaithersburg, MD, USA)

Abstract

I shall give a brief overview of the Atomic Spectroscopy Group at NIST, including its work in high-resolution spectroscopy, the Electron Beam Ion Trap, and the Atomic Spectroscopy databases. I shall summarize some of our work on reference wavelengths for the calibration of astronomical spectrographs, and finish by presenting the work we are doing on the spectra and energy levels of Fe II and Cr II.

July 2011

26/07/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The South African Square Kilometre Array Precursor MeerKAT
Erwin de Blok (University of Cape Town)

Abstract

I will describe the South African SKA Precursor MeerKAT, a 64 x 13.5 meter Gregorian offset dish radio interferometer, soon to start construction in the South African Karoo desert. A proto-type for MeerKAT, called KAT-7, is now undergoing commissioning and I will show some of the first results. The first 5 years of MeerKAT's operational life will be dedicated to a number of large Legacy surveys, and I will give a short overview of the planned science.
21/07/11 (Thursday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Do the Fundamental Constants change with Time?
Nissim Kanekar (National Centre for Radio Astrophysics, India)

Abstract

Radio spectroscopy in the multiple redshifted OH 18cm lines provides a powerful probe of changes in the fine structure constant alpha, the proton g-factor g_p and the proton-electron mass ratio m_p/m_e. Under certain astrophysical conditions, a maser mechanism causes the satellite OH 18cm lines to be "conjugate", with one line in absorption, the other in emission and the sum of the optical depths consistent with noise. This implies that the lines arise in precisely the same gas, making them ideal transitions through which to study changes in alpha, mu and g_p, with few systematic effects. In this talk, I will present results from deep WSRT and Arecibo studies of a redshifted conjugate satellite OH system, at z ~ 0.25 towards PKS 1413+135. I will also describe results from an alternative radio technique, comparing redshifts of inversion and rotational transitions, that has yielded the best sensitivity today to changes in the proton-electron mass ratio.
19/07/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — An X-Shooter survey of nearby star-forming regions: low and sub-stellar mass objects
Juan Manuel Alcala (Osservatorio Astronomico di Capodimonte, Naples)

Abstract

First results of an X-Shooter@VLT survey of the nearby star-forming regions in Lupus, sigma Ori and TW Hya are presented. This survey allows a detailed characterization of the Young Stellar and sub-stellar Objects(YSOs), and provides a database of accretion diagnostics from the Br-gamma and Pa-beta lines in the near-IR to the Balmer jump in the UV (detected even in some brown dwarfs), including the full optical band with the Balmer series and He 5876 and the Ca IRT. A major topic of this project is studying empirical relations between each of these accretion diagnostics and the mass accretion rate. Eventually, this enables the investigation of the scatter in the mass accretion rate vs. mass diagram, and to constrain formation and early evolutionary scenarios of low-mass YSOs and BDs. Several of our targets drive outflows that are traced by forbidden lines. The ratio between outflow and accretion rate is an important ingredient of jet launching models, and can be constrained here for very low-mass objects. In short, the enormous wavelength range of X-Shooter yields the opportunity for a comprehensive study of accretion and outflows through simultaneous observations of all diagnostics, eliminating variability-induced uncertainties.
12/07/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — SUBARU near-infrared observations and numerical simulations of protoplanetary disks in a young multiple star
Satoshi Mayama (NAOJ)

Abstract

Protoplanetary disks are ubiquitously observed around young solar-mass stars and are considered to be not only natural by-products of stellar evolution but also precursors of planet formation. If a forming star has close companions, the protoplanetary disk may be seriously influenced. It is important to consider this effect because most stars form as multiples. Thus studies of protoplanetary disks in multiple systems are essential to describe the general processes of star and planet formation. At lunch talk, we show the first direct image of an interacting binary protoplanetary disk, showing circumprimary and circumsecondary disks resolved with a 0.1 arcsecond resolution. The binary system exhibits a bridge of infrared emission connecting the two disks and a long spiral arm extending from the circumprimary disk. Numerical simulations reveal that the bridge corresponds to gas flow and a shock wave caused by the collision of gas rotating around the primary and secondary stars. The simulations also show that fresh material streams along the spiral arm, confirming the theoretical proposal that gas is replenished from a circummultiple reservoir. These results reveal the mechanism of interacting protoplanetary disks in young multiple systems. Furthermore, our observations provide the first direct image that enables a comparison with theoretical models of mass accretion in binary systems. The observations of this binary system provide a great opportunity to test and refine theoretical models of star and planet formation in binary systems.
08/07/11 (Friday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Star and Planet Formation in Extreme Conditions: Life in Cygnus OB2
Nick Wright (CfA)

Abstract

Cygnus OB2 is the most massive young stellar association within 2kpc, containing at least 65 O-type stars and a total mass of ~30,000 Msun. Its proximity provides a unique glimpse into star formation at the largest of scales: the extreme physical conditions induced by the proximity of thousands of massive stars, and the large spatial scales under which the star formation process takes place. It represents a vital stepping stone between studies of nearby regions such as Orion and the distant super-star clusters that dominate starburst galaxies. I will present results from the recent Chandra Legacy Survey of Cygnus OB2, which has produced a catalog of ~10,000 young stars with well-defined completeness limits. Results from these and other multi-wavelength observations are helping us understand how the fundamental products of star formation vary in these massive regions. I will also discuss a follow-up radial velocity survey of the association that will not only reveal the current dynamical state of the association, but also probe the formation and eventual dissolution of such massive star forming regions.
05/07/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The influence of dust on velocity dispersion observations of early-type galaxies in the Fornax cluster
Joachim Vanderbeke (ESO Chile)

Abstract

We have carried out a systematic, homogeneous comparison of optical and near-infrared dispersions. Our magnitude-limited sample of early-type galaxies in the Fornax cluster comprises 11 elliptical and 11 lenticular galaxies. We were able to determine the central dispersions based on the near-infrared CO absorption band head for 19 of those galaxies. The velocity dispersions range from less than 70 km/s to over 400 km/s. We compare our near-infrared velocity dispersions to the optical dispersions measured by Kuntschner (2000). Contrary to previous studies, we find a one-to-one correspondence with a median fractional difference of 6.4 per cent. We examine the correlation between the relative dust mass and the fractional difference of the velocity dispersions, but find no significant trend. Our results suggest that early-type galaxies are largely optically thin, which is consistent with recent Herschel observations.

June 2011

28/06/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Dust Around Compact Objects - Clues from the Invisible Monster
Don Hoard (Spitzer Science Center, California Institute of Technology)

Abstract

Recent infrared observations, particularly from the Spitzer Space Telescope, of white dwarfs, cataclysmic variables and other interacting compact binaries, have revealed the presence of dust in many systems. I have recently made a thorough investigation of the unique and enigmatic long-period (27.1 year) eclipsing binary star Epsilon Aurigae. This system started its latest 2-year long eclipse in August 2009. I utilized new and archival observations from the far ultraviolet to the mid-infrared to resolve the nearly 200 year old mystery concerning the nature of the stellar components in this system. Along the way, I have also made some discoveries about the nature of the solar system size dust disk in Epsilon Aurigae that show it to be similar, in all but scale, to the dust disks around compact objects. I will discuss the properties of dust in Epsilon Aurigae and compact binaries, and examine similarities and differences that can reveal new insights into the structure, formation, and evolution of these two types of binaries, that span the range of known orbital periods from the longest to the shortest.
21/06/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — The Nature of Broad Absorption Line Quasars
Michael Di Pompeo (University of Wyoming)

Abstract

The subclass of quasars containing broad absorption lines (BALs), the observational signature of high velocity outflows, has been known about for decades. However, while much work has been done their true nature has remained elusive. In order to fully understand and model quasars and their role in galaxy evolution a proper understanding of these massive outflows is necessary. As my PhD thesis I have been working on a study of a large sample of BAL quasars using radio observations and spectropolarimetry, two of the most important tools in distinguishing between competing models for these important objects. In this talk I will discuss the project and preliminary results so far.
14/06/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — Colour gradient in early-type galaxies at high-z
Adriana Gargiulo (INAF - Osservatorio Astronomico di Brera)

Abstract

I present F606W - F850LP (~UV - U restframe) and F850LP - F160W (~(U - R restframe) color gradients for two samples of early type galaxies (ETGs) at 1
07/06/11 (Tuesday)
12:30, D29 | ESO Garching
Lunch Talk
Talk — VLBI of interstellar masers to study massive star-formation: the case of the high-mass (proto)star IRAS 20126+4104
Luca Moscadell (Arcetri Observatory, Florence)

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