A comprehensive search for hot subdwarf stars using Gaia and TESS : I. Pulsating hot subdwarf B stars

2024
journal article
article
dc.abstract.enHot subdwarf B (sdB) stars are evolved, subluminous, helium-burning stars that most likely form when red giant stars loose their hydrogen envelope via interactions with close companions. They play an important role in our understanding of binary evolution, stellar atmospheres, and interiors. Only a small fraction of the sdB population is known to exhibit pulsations. Pulsating sdBs have typically been discovered serendipitously in various photometric surveys because specific selection criteria for the sample are lacking. Consequently, while individual properties of these stars are well known, a comprehensive understanding of the entire population remains elusive, and many related questions remain unanswered. The Gaia mission has presented an exceptional chance to create an unbiased sample by employing precise criteria and ensuring a high degree of completeness. The progression of high-precision and high-duty cycle photometric monitoring facilitated by space missions such as Kepler/K2 and the Transiting Exoplanet Survey Satellite (TESS) has yielded an unparalleled wealth of data for pulsating sdBs. We created a dataset of confirmed pulsating sdB stars by combining information from various ground- and space-based photometric surveys. With this dataset, we present a thorough approach to search for pulsating sdB stars based on the current Gaia DR3 sample. Based on TESS photometry, we discovered 61 new pulsating sdB stars and 20 variable sdBs whose source of variability remains to be determined through future spectroscopic follow-up observations.
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorUzundag, Murat
dc.contributor.authorKrzesiński, Jerzy - 410414
dc.contributor.authorPelisoli, Ingrid
dc.contributor.authorNémeth, Peter
dc.contributor.authorSilvotti, Roberto
dc.contributor.authorVučković, Maja
dc.contributor.authorDawson, Harry
dc.contributor.authorGeier, Stephan
dc.date.accessioned2024-05-17T09:06:26Z
dc.date.available2024-05-17T09:06:26Z
dc.date.issued2024
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number4
dc.description.versionostateczna wersja wydawcy
dc.description.volume684
dc.identifier.articleidA118
dc.identifier.doi10.1051/0004-6361/202348829
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://ruj.uj.edu.pl/handle/item/340535
dc.languageeng
dc.language.containereng
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.typeotwarte czasopismo
dc.subject.encatalogs
dc.subject.enstars: evolution
dc.subject.enstars: horizontal-branch
dc.subject.enstars: late-type
dc.subject.enstars: oscillations
dc.subject.ensubdwarfs
dc.subtypeArticle
dc.titleA comprehensive search for hot subdwarf stars using Gaia and TESS : I. Pulsating hot subdwarf B stars
dc.title.journalAstronomy and Astrophysics
dc.typeJournalArticle
dspace.entity.typePublicationen
dc.abstract.en
Hot subdwarf B (sdB) stars are evolved, subluminous, helium-burning stars that most likely form when red giant stars loose their hydrogen envelope via interactions with close companions. They play an important role in our understanding of binary evolution, stellar atmospheres, and interiors. Only a small fraction of the sdB population is known to exhibit pulsations. Pulsating sdBs have typically been discovered serendipitously in various photometric surveys because specific selection criteria for the sample are lacking. Consequently, while individual properties of these stars are well known, a comprehensive understanding of the entire population remains elusive, and many related questions remain unanswered. The Gaia mission has presented an exceptional chance to create an unbiased sample by employing precise criteria and ensuring a high degree of completeness. The progression of high-precision and high-duty cycle photometric monitoring facilitated by space missions such as Kepler/K2 and the Transiting Exoplanet Survey Satellite (TESS) has yielded an unparalleled wealth of data for pulsating sdBs. We created a dataset of confirmed pulsating sdB stars by combining information from various ground- and space-based photometric surveys. With this dataset, we present a thorough approach to search for pulsating sdB stars based on the current Gaia DR3 sample. Based on TESS photometry, we discovered 61 new pulsating sdB stars and 20 variable sdBs whose source of variability remains to be determined through future spectroscopic follow-up observations.
dc.affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.author
Uzundag, Murat
dc.contributor.author
Krzesiński, Jerzy - 410414
dc.contributor.author
Pelisoli, Ingrid
dc.contributor.author
Németh, Peter
dc.contributor.author
Silvotti, Roberto
dc.contributor.author
Vučković, Maja
dc.contributor.author
Dawson, Harry
dc.contributor.author
Geier, Stephan
dc.date.accessioned
2024-05-17T09:06:26Z
dc.date.available
2024-05-17T09:06:26Z
dc.date.issued
2024
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.number
4
dc.description.version
ostateczna wersja wydawcy
dc.description.volume
684
dc.identifier.articleid
A118
dc.identifier.doi
10.1051/0004-6361/202348829
dc.identifier.eissn
1432-0746
dc.identifier.issn
0004-6361
dc.identifier.uri
https://ruj.uj.edu.pl/handle/item/340535
dc.language
eng
dc.language.container
eng
dc.rights
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subject.en
catalogs
dc.subject.en
stars: evolution
dc.subject.en
stars: horizontal-branch
dc.subject.en
stars: late-type
dc.subject.en
stars: oscillations
dc.subject.en
subdwarfs
dc.subtype
Article
dc.title
A comprehensive search for hot subdwarf stars using Gaia and TESS : I. Pulsating hot subdwarf B stars
dc.title.journal
Astronomy and Astrophysics
dc.type
JournalArticle
dspace.entity.typeen
Publication

* The migration of download and view statistics prior to the date of April 8, 2024 is in progress.

Views
13
Views per month
Views per city
Krakow
9
Warsaw
1
Downloads
krzesinski_et-al_a_comprehensive_search_for_hot_subdwarf_2024.pdf
3