New hot subdwarf variables from the EC survey

Kilkenny, D.; Worters, Hannah L.; Lynas-Gray, A. E.

doi:10.1093/mnras/stz609

Cited by 10 publications

(14 citation statements)

References 76 publications

(78 reference statements)

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“…In addition, several recent studies reported the discovery of individual subdwarfs (Hillwig et al 2017;Kupfer et al 2017aKupfer et al ,b, 2020Kupfer et al , 2022Holdsworth et al 2017;Ratzloff et al 2019Ratzloff et al , 2020Kilkenny et al 2019;Bell et al 2019;Hogg et al 2020;Silvotti et al 2021;Pelisoli et al 2021;Vos et al 2021;Dorsch et al 2022;Silvotti et al 2022;Werner et al 2022a,b), all of which are included in our compilation.…”

Section: Input Datamentioning

confidence: 96%

The population of hot subdwarf stars studied with Gaia

Culpan

Geier

Reindl

et al. 2022

A&A

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In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys and the availability of the Gaia mission Early Data Release 3 (EDR3), we compiled new releases of two catalogues of hot subluminous stars: The data release 3 (DR3) catalogue of the known hot subdwarf stars contains 6616 unique sources and provides multi-band photometry, and astrometry from Gaia EDR3 as well as classifications based on spectroscopy and colours. This is an increase of 742 objects over the DR2 catalogue. This new catalogue provides atmospheric parameters for 3087 stars and radial velocities for 2791 stars from the literature. In addition, we have updated the Gaia Data Release 2 (DR2) catalogue of hot subluminous stars using the improved accuracy of the Gaia EDR3 data set together with updated quality and selection criteria to produce the Gaia EDR3 catalogue of 61 585 hot subluminous stars, representing an increase of 21 785 objects. The improvements in Gaia EDR3 astrometry and photometry compared to Gaia DR2 have enabled us to define more sophisticated selection functions. In particular, we improved hot subluminous star detection in the crowded regions of the Galactic plane as well as in the direction of the Magellanic Clouds by including sources with close apparent neighbours but with flux levels that dominate the neighbourhood.

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Section: Input Datamentioning

confidence: 96%

The population of hot subdwarf stars studied with Gaia

Culpan

Geier

Reindl

et al. 2022

A&A

View full text Add to dashboard Cite

show abstract

“…In addition, several recent studies reported the discovery of individual subdwarfs (Hillwig et al 2017;Kupfer et al 2017aKupfer et al ,b, 2020Kupfer et al , 2022Holdsworth et al 2017;Ratzloff et al 2019;Kilkenny et al 2019;Bell et al 2019;Hogg et al 2020;Ratzloff et al 2020;Silvotti et al 2021;Pelisoli et al 2021;Vos et al 2021;Dorsch et al 2022;Silvotti et al 2022;Werner et al 2022a,b), all of which are included in our compilation.…”

Section: Input Datamentioning

confidence: 96%

The population of hot subdwarf stars studied with Gaia -- IV. Catalogues of hot subluminous stars based on Gaia EDR3

Culpan,

Geier,

Pelisoli

et al. 2022

Preprint

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In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys and the availability of the Gaia mission Early Data Release 3 (EDR3), we compiled new releases of two catalogues of hot subluminous stars: The data release 3 (DR3) catalogue of the known hot subdwarf stars contains 6,616 unique sources and provides multi-band photometry, and astrometry from Gaia EDR3 as well as classifications based on spectroscopy and colours. This is an increase of 742 objects over the DR2 catalogue. This new catalogue provides atmospheric parameters for 3,087 stars and radial velocities for 2,791 stars from the literature. In addition, we have updated the Gaia Data Release 2 (DR2) catalogue of hot subluminous stars using the improved accuracy of the Gaia EDR3 data set together with updated quality and selection criteria to produce the Gaia EDR3 catalogue of 61,585 hot subluminous stars, representing an increase of 21,785 objects. The improvements in Gaia EDR3 astrometry and photometry compared to Gaia DR2 have enabled us to define more sophisticated selection functions. In particular, we improved hot subluminous star detection in the crowded regions of the Galactic plane as well as in the direction of the Magellanic Clouds by including sources with close apparent neighbours but with flux levels that dominate the neighbourhood.

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“…Asteroseismology of the much rarer sdOV stars is still developing (Van Grootel et al 2019). Kilkenny et al (2017) and Kilkenny et al (2019) discovered an sdOV star, EC 03089-6421, with T eff = 52 000 K and M ∼ 0.1 M⊙, pulsating with very short periods of 27 s, 31 s, and 34 s. The pulsations in this star are potentially driven by the ǫ-mechanism and it may be a progenitor of an ELM white dwarf. Finding pulsations driven by the ǫ-mechanism is a long-standing goal, with previous claims or suggestions that have not been confirmed.…”

Section: V366 Aqr Starsmentioning

confidence: 98%

Asteroseismology across the HR diagram

Kurtz¹

2022

Preprint

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Asteroseismology has grown from its beginnings three decades ago to a mature field teeming with discoveries and applications. This phenomenal growth has been enabled by space photometry with precision 10 − 100 times better than ground-based observations, with nearly continuous light curves for durations of weeks to years, and by large scale ground-based surveys spanning years designed to detect all timevariable phenomena. The new high precision data are full of surprises, deepening our understanding of the physics of stars.• This review explores asteroseismic developments from the last decade primarily as a result of light curves from the Kepler and TESS space missions for: massive upper main-sequence OBAF stars, pre-mainsequence stars, peculiar stars, classical pulsators, white dwarfs and subdwarfs, and tidally interacting close binaries. • The space missions have increased the numbers of pulsators in many classes by an order of magnitude. • Asteroseismology measures fundamental stellar parameters and stellar interior physics -mass, radius, age, metallicity, luminosity, distance, magnetic fields, interior rotation, angular momentum transfer, convective overshoot, core burning stage -supporting disparate fields such as galactic archeology, exoplanet host stars, supernovae progenitors, gamma ray and gravitational wave precursors, close binary star origins and evolution, and standard candles. • Stars are the luminous tracers of the universe. Asteroseismology significantly improves models of stellar structure and evolution on which all inference from stars depends.

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New hot subdwarf variables from the EC survey

Cited by 10 publications

References 76 publications

The population of hot subdwarf stars studied with Gaia

The population of hot subdwarf stars studied with Gaia

The population of hot subdwarf stars studied with Gaia -- IV. Catalogues of hot subluminous stars based on Gaia EDR3

Asteroseismology across the HR diagram

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