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

Myndasnið

Stór JPEG
166,3 KB

Þysjanleg


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61,6 KB
1280x1024
83,1 KB
1600x1200
111,3 KB
1920x1200
131,6 KB
2048x1536
159,0 KB

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

TíðnisviðBylgjulengdSjónauki
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

 

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