A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars

Symbiotic stars are interacting binary systems composed of an evolved star (generally a late-type red giant) and a degenerate or dwarf companion in orbit close enough for mass transfer to occur. Understanding the status of the late-type star is important for developing binary models for the symbioti...

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Detalles Bibliográficos
Autores principales: Marchiano, Paula Esther, Arias, María Laura, Kraus, Michaela, Kourniotis, Michalis, Torres, Andrea Fabiana, Cidale, Lydia Sonia, Borges Fernandes, Marcelo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Ciencias Astronómicas
techniques: spectroscopic
stars: symbiotic, binaries
stars: infrared
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/159967
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-159967
record_format dspace
spelling I19-R120-10915-1599672023-11-09T20:03:51Z http://sedici.unlp.edu.ar/handle/10915/159967 A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars Marchiano, Paula Esther Arias, María Laura Kraus, Michaela Kourniotis, Michalis Torres, Andrea Fabiana Cidale, Lydia Sonia Borges Fernandes, Marcelo 2023 2023-11-09T12:34:17Z en Ciencias Astronómicas techniques: spectroscopic stars: symbiotic, binaries stars: infrared Symbiotic stars are interacting binary systems composed of an evolved star (generally a late-type red giant) and a degenerate or dwarf companion in orbit close enough for mass transfer to occur. Understanding the status of the late-type star is important for developing binary models for the symbiotic systems as it affects the transfer of matter needed to activate the hot component. Infrared observations have been very useful in probing the nature of late-type stars in symbiotic systems. This work presents a set of symbiotic stars observed with SOAR/OSIRIS (R∼3000) in the H-band. We aimed to search for possible molecular circumstellar emission, to characterize the cool companion in these systems, and to confront the new findings with those obtained from the previous K-band classifications. We detected molecular emission from just one object, BI Cru, which displays the second-overtone CO-bands. To fit the observed photospheric CO absorption bands, we used the MARCS atmosphere models. We present our results as a mini atlas of symbiotic stars in the near-infrared region to facilitate the comparison among different observed symbiotic systems. Instituto de Astrofísica de La Plata Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
techniques: spectroscopic
stars: symbiotic, binaries
stars: infrared
spellingShingle Ciencias Astronómicas
techniques: spectroscopic
stars: symbiotic, binaries
stars: infrared
Marchiano, Paula Esther
Arias, María Laura
Kraus, Michaela
Kourniotis, Michalis
Torres, Andrea Fabiana
Cidale, Lydia Sonia
Borges Fernandes, Marcelo
A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars
topic_facet Ciencias Astronómicas
techniques: spectroscopic
stars: symbiotic, binaries
stars: infrared
description Symbiotic stars are interacting binary systems composed of an evolved star (generally a late-type red giant) and a degenerate or dwarf companion in orbit close enough for mass transfer to occur. Understanding the status of the late-type star is important for developing binary models for the symbiotic systems as it affects the transfer of matter needed to activate the hot component. Infrared observations have been very useful in probing the nature of late-type stars in symbiotic systems. This work presents a set of symbiotic stars observed with SOAR/OSIRIS (R∼3000) in the H-band. We aimed to search for possible molecular circumstellar emission, to characterize the cool companion in these systems, and to confront the new findings with those obtained from the previous K-band classifications. We detected molecular emission from just one object, BI Cru, which displays the second-overtone CO-bands. To fit the observed photospheric CO absorption bands, we used the MARCS atmosphere models. We present our results as a mini atlas of symbiotic stars in the near-infrared region to facilitate the comparison among different observed symbiotic systems.
format Articulo
Articulo
author Marchiano, Paula Esther
Arias, María Laura
Kraus, Michaela
Kourniotis, Michalis
Torres, Andrea Fabiana
Cidale, Lydia Sonia
Borges Fernandes, Marcelo
author_facet Marchiano, Paula Esther
Arias, María Laura
Kraus, Michaela
Kourniotis, Michalis
Torres, Andrea Fabiana
Cidale, Lydia Sonia
Borges Fernandes, Marcelo
author_sort Marchiano, Paula Esther
title A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars
title_short A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars
title_full A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars
title_fullStr A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars
title_full_unstemmed A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars
title_sort mini atlas of h-band spectra of southern symbiotic stars
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/159967
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