<i>Gaia</i> white dwarfs within 40 pc – III. Spectroscopic observations of new candidates in the Southern hemisphere-Reference-Cited by-同舟云学术

Gaia white dwarfs within 40 pc – III. Spectroscopic observations of new candidates in the Southern hemisphere

Published:2022-11-12 Issue:2 Volume:518 Page:3055-3073
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

O’Brien Mairi W¹^ORCID,Tremblay P-E¹,Gentile Fusillo N P²,Hollands M A³^ORCID,Gänsicke B T¹^ORCID,Koester D⁴^ORCID,Pelisoli I¹^ORCID,Cukanovaite E¹^ORCID,Cunningham T¹^ORCID,Doyle A E⁵,Elms A¹^ORCID,Farihi J⁶^ORCID,Hermes J J⁷^ORCID,Holberg J⁸,Jordan S⁹^ORCID,Klein B L¹⁰,Kleinman S J¹¹,Manser C J¹¹²,De Martino D¹³,Marsh T R¹^ORCID,McCleery J¹,Melis C¹⁴,Nitta A¹⁵,Parsons S G³^ORCID,Raddi R¹⁶^ORCID,Rebassa-Mansergas A¹⁶¹⁷,Schreiber M R¹⁸¹⁹,Silvotti R²⁰^ORCID,Steeghs D¹^ORCID,Toloza O¹⁸¹⁹^ORCID,Toonen S²¹,Torres S¹⁶¹⁷,Weinberger A J²²,Zuckerman B¹⁰

Affiliation:

1. Department of Physics, University of Warwick , Coventry CV4 7AL, UK

2. European Southern Observatory , Karl Schwarzschild Straße 2, Garching D-85748, Germany

3. Department of Physics and Astronomy, University of Sheffield , Sheffield S3 7RH, UK

4. Institut für Theoretische Physik und Astrophysik, University of Kiel , D-24098 Kiel, Germany

5. Department of Earth, Planetary, and Space Sciences, University of California , Los Angeles, CA 90095, USA

6. Department of Physics and Astronomy, University College London , London WC1E 6BT, UK

7. Department of Astronomy & Institute for Astrophysical Research, Boston University , 725 Commonwealth Ave., Boston, MA 02215, USA

8. Lunar and Planetary Laboratory, Sonett Space Science Building, University of Arizona , Tucson, Arizona 85721, USA

9. Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg , D-69120 Heidelberg, Germany

10. Department of Physics and Astronomy, University of California , Los Angeles, CA 90095-1562, USA

11. Astromanager LLC , Hilo, HI 96720, USA

12. Astrophysics Group, Department of Physics, Imperial College London , Prince Consort Rd, London SW7 2AZ, UK

13. INAF – Capodimonte Astronomical Observatory Naples Via Moiariello 16 , I-80131 Naples, Italy

14. Center for Astrophysics and Space Sciences, University of California , San Diego, CA 92093, USA

15. Gemini Observatory , Hilo, HI 96720, USA

16. Departament de Física, Universitat Politècnica de Catalunya , c/Esteve Terrades 5, E-08860 Castelldefels, Spain

17. Institut d’Estudis Espacials de Catalunya , Ed. Nexus-201, c/Gran Capità 2-4, E-08034 Barcelona, Spain

18. Departamento de Física, Universidad Técnica Federico Santa María , Avenida España 1680, Valparaíso, Chile

19. Millennium Nucleus for Planet Formation , NPF, Valparaíso, Av. España 1680, Chile

20. INAF-Osservatorio Astrofisico di Torino , Strada dell’Osservatorio 20, I-10025, Pino Torinese, Italy

21. Institute for Gravitational Wave Astronomy, School of Physics and Astronomy, University of Birmingham , Birmingham B15 2TT, UK

22. Earth and Planets Laboratory, Carnegie Institution for Science , 5241 Broad Branch Rd NW, Washington, DC 20015, USA

Abstract

Abstract We present a spectroscopic survey of 248 white dwarf candidates within 40 pc of the Sun; of these 244 are in the Southern hemisphere. Observations were performed mostly with the Very Large Telescope (X-Shooter) and Southern Astrophysical Research Telescope. Almost all candidates were selected from Gaia Data Release 3 (DR3). We find a total of 246 confirmed white dwarfs, 209 of which had no previously published spectra, and two main-sequence star contaminants. Of these, 100 white dwarfs display hydrogen Balmer lines, 69 have featureless spectra, and two show only neutral helium lines. Additionally, 14 white dwarfs display traces of carbon, while 37 have traces of other elements that are heavier than helium. We observe 35 magnetic white dwarfs through the detection of Zeeman splitting of their hydrogen Balmer or metal spectral lines. High spectroscopic completeness (> 97 per cent) has now been reached, such that we have 1058 confirmed Gaia DR3 white dwarfs out of 1083 candidates within 40 pc of the Sun at all declinations.

Funder

European Southern Observatory

European Space Agency

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stac3303/47014693/stac3303.pdf

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2. Discovery of a Uniquely Cool and Compact Source at 28 pc from the Sun