Wray 15-906 low mass Luminous Blue Variable in a pre-supernova stage
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00646242" target="_blank" >RIV/67985815:_____/24:00646242 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1017/S1743921322002733" target="_blank" >http://dx.doi.org/10.1017/S1743921322002733</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921322002733" target="_blank" >10.1017/S1743921322002733</a>
Alternative languages
Result language
angličtina
Original language name
Wray 15-906 low mass Luminous Blue Variable in a pre-supernova stage
Original language description
The evolutionary link between Red Supergiants and Luminous Blue variables is interesting, but still poorly understood. We present the results of a study of the Galactic candidate luminous blue variable Wray 15-906, revealed via the detection of its infrared circumstellar shell (of ≍2 pc in diameter) with the Wide-field Infrared Survey Explorer (WISE) and the Herschel Space Observatory. Using the stellar atmosphere code CMFGEN and the Gaia parallax, we found that Wray 15-906 is a relatively low-luminosity, log(L/Lȯ) ≍ 5.4, star with a temperature of 25±2 kK. In the framework of single star evolution, the obtained results suggest that Wray 15-906 is a post-red supergiant star with an initial mass of ≍ 25Mȯ and that before exploding as a supernova it could transform for a short time into a WN11h star. The presence of a shell with a mass 2.9±0.5Me indicates that Wray 15-906 has suffered substantial mass loss in the recent past.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the International Astronomical Union
ISBN
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ISSN
1743-9213
e-ISSN
1743-9221
Number of pages
2
Pages from-to
460-461
Publisher name
Cambridge University Press
Place of publication
Cambridge
Event location
Ballyconnell
Event date
May 8, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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