An eclipsing 47 min double white dwarf binary at 400 pc

被引：9

作者：

Munday, James ^{[1
,2
]}

Tremblay, P-E ^{[1
]}

Hermes, J. J. ^{[3
,4
]}

Barlow, Brad ^{[5
]}

Pelisoli, Ingrid ^{[1
]}

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

Parsons, Steven G. ^{[6
]}

Jones, David ^{[7
,8
,9
]}

Kepler, S. O. ^{[10
]}

Brown, Alex ^{[6
]}

Littlefair, S. P. ^{[6
]}

Hegedus, R. ^{[11
]}

Baran, Andrzej ^{[12
,13
]}

Breedt, Elme ^{[14
]}

Dhillon, V. S. ^{[6
,7
]}

Dyer, Martin J. ^{[6
]}

Green, Matthew J. ^{[15
]}

Kennedy, Mark R. ^{[16
,17
]}

Kerry, Paul ^{[6
]}

Lopez, Isaac D. ^{[18
]}

Romero, Alejandra D. ^{[10
]}

Sahman, Dave ^{[6
]}

Worters, Hannah L. ^{[19
]}

机构：

[1] Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, England

[2] Isaac Newton Grp Telescopes, Apartado Correos 368, E-38700 Santa Cruzde La Palma, Spain

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

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

[5] High Point Univ, Dept Phys & Astron, High Point, NC 27268 USA

[6] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, England

[7] Inst Astrofis Canarias, E-38205 San Cristobal la Laguna, Tenerife, Spain

[8] Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain

[9] Nord Opt Telescope, Rambla Jose Ana Fernandez Perez 7, E-38711 Brena Baja, Spain

[10] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501900 Porto Alegre, RS, Brazil

[11] Univ North Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[12] Univ Warsaw, Astron Observ, Aleje Ujazdowskie 4, PL-00478 Warsaw, Poland

[13] Missouri State Univ, Dept Phys Astron & Mat Sci, Springfield, MO 65897 USA

[14] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[15] Tel Aviv Univ, Sch Phys & Astron, Dept Astrophys, IL-6997801 Tel Aviv, Israel

[16] Univ Coll Cork, Sch Phys, Cork T12 ND89, Ireland

[17] Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, England

[18] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[19] South African Astron Observ, POB 9, ZA-7935 Cape Town, South Africa

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 525卷 / 02期

基金：

欧洲研究理事会; 英国科学技术设施理事会; 美国国家科学基金会;

关键词：

gravitational waves; binaries: close; stars: individual: WDJ 022558.21-692025.38; white dwarfs; PERIOD DETACHED BINARY; ORBITAL DECAY; PHYSICS; DISCOVERY; GAIA; MASS; POPULATION; EVOLUTION; ULTRACAM; CATALOG;

D O I：

10.1093/mnras/stad2347

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the discovery of the eclipsing double white dwarf (WD) binary WDJ 022558.21-692025.38 that has an orbital period of 47.19 min. Following identification with the Transiting Exoplanet Survey Satellite, we obtained time series ground based spectroscopy and high-speed multiband ULTRACAM photometry which indicate a primary DA WD of mass 0.40 +/- 0.04 M-circle dot and a 0.28 +/- 0.02 M-circle dot mass secondary WD, which is likely of type DA as well. The system becomes the third-closest eclipsing double WD binary discovered with a distance of approximately 400 pc and will be a detectable source for upcoming gravitational wave detectors in the mHz frequency range. Its orbital decay will be measurable photometrically within 10 yr to a precision of better than 1 per cent. The fate of the binary is to merge in approximately 41 Myr, likely forming a single, more massive WD.

引用

页码：1814 / 1823

页数：10

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