Delicate bubble of expelled material around the cool red star U Antliae

This ALMA image reveals much finer structure in the U Antliae shell than has previously been possible. Around 2700 years ago, U Antliae went through a short period of rapid mass loss. During this period of only a few hundred years, the material making up the shell seen in the new ALMA data was ejected at high speed. Examination of this shell in further detail also shows some evidence of thin, wispy clouds known as filamentary substructures.

Credit:

ALMA (ESO/NAOJ/NRAO)/F. Kerschbaum

Over de afbeelding

Id:eso1730a
Type:Observatie
Publicatiedatum:20 september 2017 12:00
Gerelateerde berichten:eso1730
Grootte:2000 x 2000 px

Over het object

Naam:U Antliae
Type:Milky Way : Star : Type : Variable
Constellation:Antlia
Categorie:Stars

Image Formats

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Coordinates

Position (RA):10 35 12.87
Position (Dec):-39° 33' 44.99"
Field of view:2.18 x 2.18 arcminutes
Orientation:North is 0.5° right of vertical

Kleuren & filters

BandGolflengteTelescoop
Millimeter
230 GHz
1.3 mmAtacama Large Millimeter/submillimeter Array
Band 6

 

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