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The third data release of Gaia has provided approximately 220 million low resolution spectra. Among these, about 100,000 correspond to white dwarfs. The magnitude of this quantity of data precludes the possibility of performing spectral…

Solar and Stellar Astrophysics · Physics 2023-11-29 Enrique Miguel García-Zamora , Santiago Torres , Alberto Rebassa-Mansergas

The third Gaia data release provides low-resolution spectra for around 200 million sources. It is expected that a sizeable fraction of them contain a white dwarf (WD), either isolated, or in a binary system with a main-sequence (MS)…

Solar and Stellar Astrophysics · Physics 2022-11-23 David Echeverry , Santiago Torres , Alberto Rebassa-Mansergas , Aina Ferrer-Burjachs

The third data release of Gaia has provided low resolution spectra for ~100,000 white dwarfs (WDs) that, together with the excellent photometry and astrometry, represent an unrivalled benchmark for the study of this population. In this…

Solar and Stellar Astrophysics · Physics 2022-12-07 F. M. Jiménez-Esteban , S. Torres , A. Rebassa-Mansergas , P. Cruz , R. Murillo-Ojeda , E. Solano , C. Rodrigo , M. E. Camisassa

The latest Gaia data release provides low-resolution spectra for approximately 100 000 white dwarfs. Though useful for pre-classification, they lack the resolution required for accurate spectral type and parameter determination, motivating…

Solar and Stellar Astrophysics · Physics 2026-05-19 Enrique Miguel García Zamora , Santiago Torres Gil , Alberto Rebassa Mansergas , Aina Ferrer i Burjachs

Gaia-DR2 has provided an unprecedented number of white dwarf candidates of our Galaxy. In particular, it is estimated that Gaia-DR2 has observed nearly 400,000 of these objects and close to 18,000 up to 100 pc from the Sun. This large…

Solar and Stellar Astrophysics · Physics 2019-03-27 S. Torres , C. Cantero , A. Rebassa-Mansergas , G. Skorobogatov , F. M. Jiménez-Esteban , E. Solano

The characterization of white dwarf atmospheres is crucial for accurately deriving stellar parameters such as effective temperature, mass, and age. We aim to classify the population of white dwarfs up to 500 pc into hydrogen-rich or…

We present a catalogue of 73,221 white dwarf candidates extracted from the astrometric and photometric data of the recently published Gaia DR2 catalogue. White dwarfs were selected from the Gaia Hertzsprung-Russell diagram with the aid of…

Solar and Stellar Astrophysics · Physics 2018-08-15 F. M. Jiménez-Esteban , S. Torres , A. Rebassa-Mansergas , G. Skorobogatov , E. Solano , C. Cantero , C. Rodrigo

We present a catalogue of white dwarf candidates selected from Gaia early data release three (EDR3). We applied several selection criteria in absolute magnitude, colour, and Gaia quality flags to remove objects with unreliable measurements…

The latest Gaia data release in July 2022, DR3, added a number of important data products to those available in earlier releases, including radial velocity data, information on stellar multiplicity and XP spectra of a selected sample of…

Solar and Stellar Astrophysics · Physics 2023-09-01 O. Vincent , M. A. Barstow , S. Jordan , C. Mander , P. Bergeron , P. Dufour

We present a comprehensive overview of a volume-complete sample of white dwarfs located within 40 pc of the Sun, a significant proportion of which were detected in Gaia Data Release 3 (DR3). Our DR3 sample contains 1076 spectroscopically…

The $Gaia$ mission has provided an unprecedented wealth of information about the white dwarf population of our Galaxy. In particular, our studies show that the sample up to 100\,pc from the Sun can be considered as practically complete.…

Solar and Stellar Astrophysics · Physics 2022-02-23 S. Torres , P. Canals , F. M. Jiménez-Esteban , A. Rebassa-Mansergas , E. Solano

Context. White dwarfs can be used to study the structure and evolution of the Galaxy by analysing their luminosity function and initial mass function. Among them, the very cool white dwarfs provide the information for the early ages of each…

Instrumentation and Methods for Astrophysics · Physics 2014-05-08 J. M. Carrasco , S. Catalán , C. Jordi , P. E. Tremblay , R. Napiwotzki , X. Luri , A. C. Robin , P. M Kowalski

The next generation of spectroscopic surveys is expected to provide spectra for hundreds of thousands of white dwarf (WD) candidates in the upcoming years. Currently, spectroscopic classification of white dwarfs is mostly done by visual…

Solar and Stellar Astrophysics · Physics 2023-03-01 Olivier Vincent , Pierre Bergeron , Patrick Dufour

We present a catalogue of white dwarf candidates selected from the second data release of $Gaia$ (DR2). We used a sample of spectroscopically confirmed white dwarfs from the Sloan Digital Sky Survey (SDSS) to map the entire space spanned by…

We use the data provided by the Gaia Early Data Release 3 to search for a highly-complete volume-limited sample of unresolved binaries consisting of a white dwarf and a main sequence companion (i.e. WDMS binaries) within 100pc. We select…

This review highlights the role of the Gaia space mission in transforming white dwarf research. These stellar remnants constitute 5-7% of the local stellar population in volume, yet before Gaia the lack of trigonometric parallaxes hindered…

We cross-matched 1.3 million white dwarf (WD) candidates from Gaia EDR3 with spectral data from LAMOST DR7 within 3 arcsec. Applying machine learning described in our previous work, we spectroscopically identified 6,190 WD objects after…

Solar and Stellar Astrophysics · Physics 2021-10-04 Xiao Kong , A-Li Luo

We use Gaia Data Release 2 to identify 13,928 white dwarfs within 100 pc of the Sun. The exquisite astrometry from Gaia reveals for the first time a bifurcation in the observed white dwarf sequence in both Gaia and the Sloan Digital Sky…

Solar and Stellar Astrophysics · Physics 2018-07-04 Mukremin Kilic , N. C. Hambly , P. Bergeron , C. Genest-Beaulieu , N. Rowell

Based on the astrometry and photometry in Gaia DR3, we identified new nearby white dwarfs and validated those that had been missed from recent white dwarf catalogues despite being previously documented. To ensure the reliability of their…

Solar and Stellar Astrophysics · Physics 2024-01-04 Alex Golovin , Sabine Reffert , Akash Vani , Ulrich Bastian , Stefan Jordan , Andreas Just

Using Gaia DR2 data, we present an up-to-date sample of white dwarfs within 20 pc of the Sun. In total we identified 139 systems in Gaia DR2, nine of which are new detections, with the closest of these located at a distance of 13.05 pc. We…

Solar and Stellar Astrophysics · Physics 2018-08-15 M. A. Hollands , P. E. Tremblay , B. T. Gaensicke , N. P. Gentile-Fusillo , S. Toonen
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