The rapid evolution of the central star of the Stingray Nebula - latest news from the HST
SAO 244567 is an unusually fast evolving star. Within twenty years only, it had turned from a B-type supergiant into the central star of the Stingray Nebula. Space- and ground-based observations obtained over the last decades have revealed that its spectrum changes noticeably over just a few years,...
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Formato: | Articulo |
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2016
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87018 |
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I19-R120-10915-87018 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Astronómicas Central star Stingray Nebula |
spellingShingle |
Ciencias Astronómicas Central star Stingray Nebula Reindl, Nicole Rauch, Thomas Miller Bertolami, Marcelo Miguel Werner, Klaus The rapid evolution of the central star of the Stingray Nebula - latest news from the HST |
topic_facet |
Ciencias Astronómicas Central star Stingray Nebula |
description |
SAO 244567 is an unusually fast evolving star. Within twenty years only, it had turned from a B-type supergiant into the central star of the Stingray Nebula. Space- and ground-based observations obtained over the last decades have revealed that its spectrum changes noticeably over just a few years, showing stellar evolution in real time. The low mass of SAO 244567 is, however, in strong contradiction with canonical post-asymptotic giant branch evolution. Thus, its fast evolution has been a mystery for decades. We present preliminary results of the non-LTE spectral analyis of the recently obtained HST/COS observations, which finally allow us to shed light on the evolutionary history of this extraordinary object. |
format |
Articulo Articulo |
author |
Reindl, Nicole Rauch, Thomas Miller Bertolami, Marcelo Miguel Werner, Klaus |
author_facet |
Reindl, Nicole Rauch, Thomas Miller Bertolami, Marcelo Miguel Werner, Klaus |
author_sort |
Reindl, Nicole |
title |
The rapid evolution of the central star of the Stingray Nebula - latest news from the HST |
title_short |
The rapid evolution of the central star of the Stingray Nebula - latest news from the HST |
title_full |
The rapid evolution of the central star of the Stingray Nebula - latest news from the HST |
title_fullStr |
The rapid evolution of the central star of the Stingray Nebula - latest news from the HST |
title_full_unstemmed |
The rapid evolution of the central star of the Stingray Nebula - latest news from the HST |
title_sort |
rapid evolution of the central star of the stingray nebula - latest news from the hst |
publishDate |
2016 |
url |
http://sedici.unlp.edu.ar/handle/10915/87018 |
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Repositorios |
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