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

被引：31

作者：

O'Brien, Mairi W. ^{[1
]}

Tremblay, P-E ^{[1
]}

Fusillo, N. P. Gentile ^{[2
]}

Hollands, M. A. ^{[3
]}

Gansicke, B. T. ^{[1
]}

Koester, D. ^{[4
]}

Pelisoli, I ^{[1
]}

Cukanovaite, E. ^{[1
]}

Cunningham, T. ^{[1
]}

Doyle, A. E. ^{[5
]}

Elms, A. ^{[1
]}

Farihi, J. ^{[6
]}

Hermes, J. J. ^{[7
,8
]}

Holberg, J. ^{[9
]}

Jordan, S. ^{[10
]}

Klein, B. L. ^{[11
]}

Kleinman, S. J. ^{[12
]}

Manser, C. J. ^{[1
,13
]}

De Martino, D. ^{[14
]}

Marsh, T. R. ^{[1
]}

McCleery, J. ^{[1
]}

Melis, C. ^{[15
]}

Nitta, A. ^{[16
]}

Parsons, S. G. ^{[3
]}

Raddi, R. ^{[17
]}

Rebassa-Mansergas, A. ^{[17
,18
]}

Schreiber, M. R. ^{[19
,20
]}

Silvotti, R. ^{[21
]}

Steeghs, D. ^{[1
]}

Toloza, O. ^{[19
,20
]}

Toonen, S. ^{[22
]}

Torres, S. ^{[17
,18
]}

Weinberger, A. J. ^{[23
]}

Zuckerman, B. ^{[11
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany

[3] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[4] Univ Kiel, Inst Theores Phys & Astrophys, D-24098 Kiel, Germany

[5] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA

[6] UCL, Dept Phys & Astron, London WC1E 6BT, England

[7] Boston Univ, Dept Astron, 725 Commonwealth Ave, Boston, MA 02215 USA

[8] Boston Univ, Inst Astrophys Res, 725 Commonwealth Ave, Boston, MA 02215 USA

[9] Univ Arizona, Lunar & Planetary Lab, Sonett Space Sci Bldg, Tucson, AZ 85721 USA

[10] Heidelberg Univ, Astron Rech Inst, Zentrum Astron, D-69120 Heidelberg, Germany

[11] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[12] Astromanager LLC, Hilo, HI 96720 USA

[13] Imperial Coll London, Dept Phys, Astrophys Grp, Prince Consort Rd, London SW7 2AZ, England

[14] INAF Capodimonte Astron Observ Naples, Via Moiariello 16, I-180131 Naples, Italy

[15] Univ Calif San Diego, Ctr Astrophys & Space Sci, San Diego, CA 92093 USA

[16] Gemini Observ, Hilo, HI 96720 USA

[17] Univ Politecn Cataluna, Dept Fis, C Esteve Terrades 5, E-08860 Castelldefels, Spain

[18] Inst Estudis Espacials Catalunya, Ed Nexus 201,C Gran Capita 2-4, E-08034 Barcelona, Spain

[19] Univ Tecn Federico Santa Maria, Dept Fis, Ave Espalia 1680, Valparaiso, Chile

[20] Millennium Nucleus Planet Format, Av Espana 1680, Valparaiso, Chile

[21] INAF Osservatorio Astrofis Torino, Str Osservatorio 20, I-10025 Pino Torinese, Italy

[22] Univ Birmingham, Inst Gravitat Wave Astron, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[23] Carnegie Inst Sci, Earth & Planets Lab, 5241 Broad Branch Rd NW, Washington, DC 20015 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 518卷 / 02期

基金：

英国科学技术设施理事会; 欧盟地平线“2020”; 欧洲研究理事会;

关键词：

stars: statistics; white dwarfs; solar neighbourhood; OSIRIS TUNABLE IMAGER; FINAL MASS RELATION; SPECTRAL EVOLUTION; SOLAR NEIGHBORHOOD; MOTION SURVEY; DATA RELEASE; COOL; STARS; DA; SPECTROGRAPH;

D O I：

10.1093/mnras/stac3303

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 arc 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 percent) has now been reached, such that we have 1058 confirmed Gala DR3 white dwarfs out of 1083 candidates within 40 pc of the Sun at all declinations.

引用

页码：3055 / 3073

页数：19

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