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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Autores principales: Reindl, Nicole, Rauch, Thomas, Miller Bertolami, Marcelo Miguel, Werner, Klaus
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Astronómicas
Central star
Stingray Nebula
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87018
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87018
record_format dspace
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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