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The surface of the red giant star π1 Gruis from PIONIER on the VLT
Astronomers using ESO’s Very Large Telescope have directly observed granulation patterns on the surface of a star outside the Solar System — the ageing red giant π1 Gruis. This remarkable new image from the PIONIER instrument reveals the convective cells that make up the surface of this huge star. Each cell covers more than a quarter of the star’s diameter and measures about 120 million kilometres across.
Mynd/Myndskeið:ESO
Um myndina
Auðkenni: | eso1741a |
Tegund: | Athuganir |
Útgáfudagur: | Des 20, 2017, 19:00 CET |
Tengdar fréttatilkynningar: | eso1741 |
Stærð: | 2000 x 2000 px |
Um fyrirbærið
Nafn: | HD 212087, π1 Gruis |
Tegund: | Milky Way : Star : Evolutionary Stage : Red Giant |
Constellation: | Grus |
Flokkur: | Stars |
Bakgrunnsmynd
Hnit
Position (RA): | 22 22 44.21 |
Position (Dec): | -45° 56' 52.61" |
Field of view: | 0.01 x 0.01 arcminutes |
Stefna: | Norður er -0.0° vinstri frá lóðréttu |
Litir og síur
Tíðnisvið | Bylgjulengd | Sjónauki |
---|---|---|
Innrautt H | 1.625 μm | Very Large Telescope Interferometer PIONIER |
Innrautt H | 1.678 μm | Very Large Telescope Interferometer PIONIER |
Innrautt H | 1.73 μm | Very Large Telescope Interferometer PIONIER |
Innrautt H | 1.678 μm | Very Large Telescope Interferometer PIONIER |
Innrautt H | 1.625 μm | Very Large Telescope Interferometer PIONIER |