H-alpha line strength of EROS-BLG-2000-5

The red points in the chart are the nightly averages of the strength of the H-alpha absorption line as measured before (point to the left) and during the second caustic crossing. The fully drawn lines represent the expected change, according to two different simulations of the event. The models agree with the data in their general form, but differ on the last night when the trailing limb was crossing the caustic. The two simulations shown differ in their assumptions about the geometry of the event; further data and modeling are now refining these assumptions so that a more quantitative comparison can be made.

Herkunftsnachweis:

ESO

Über das Bild

ID:eso0117d
Typ:Aufsuchkarte
Veröffentlichungsdatum:25. April 2001
Dazugehörige Veröffentlichungen:eso0117
Größe:3000 x 1821 px

Über das Objekt

Name:EROS-BLG-2000-5
Typ:Milky Way : Star
Milky Way : Cosmology : Phenomenon : Lensing
Entfernung:25000 Lichtjahre
Kategorie:Stars

Bildformate

Großes JPEG
225,9 KB