A FEROS Survey of Hot Subdwarf Stars

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00495880" target="_blank" >RIV/67985815:_____/18:00495880 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1515/astro-2018-0005" target="_blank" >http://dx.doi.org/10.1515/astro-2018-0005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/astro-2018-0005" target="_blank" >10.1515/astro-2018-0005</a>

Result language

angličtina

Original language name

A FEROS Survey of Hot Subdwarf Stars

Original language description

We have completed a survey of twenty-two ultraviolet-selected hot subdwarfs using the Fiber-fed Extended Range Optical Spectrograph (FEROS) and the 2.2-m telescope at La Silla. The sample includes apparently single objects as well as hot subdwarfs paired with a bright, unresolved companion. The sample was extracted from our GALEX catalogue of hot subdwarf stars. We identified three new short-period systems (P = 3.5 hours to 5 days) and determined the orbital parameters of a long-period (P = 62(d). 66) sdO plus G III system. This particular system should evolve into a close double degenerate system following a second common envelope phase. We also conducted a chemical abundance study of the subdwarfs: Some objects show nitrogen and argon abundance excess with respect to oxygen. We present key results of this programme.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Open Astronomy

ISSN

2543-6376

e-ISSN

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Volume of the periodical

27

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

7

Pages from-to

7-13

UT code for WoS article

000427930900002

EID of the result in the Scopus database

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