White Dwarfs in Common Proper Motion Binaries

被引：0

作者：

Arazimova, E. ^{[1
]}

Kawka, A. ^{[1
]}

Vennes, S. ^{[1
]}

机构：

[1] Acad Sci Czech Republic, Inst Astron, CS-25165 Ondrejov, Czech Republic

来源：

BINARIES - KEY TO COMPREHENSION OF THE UNIVERSE | 2010年 / 435卷

关键词：

STARS;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examined six common proper motion pairs containing a hydrogen-rich (DA) white dwarf and a main-sequence component. The white dwarfs were selected from the revised New Luyten Two-Tenths (rNLTT) catalog using the optical/infrared (V - J) reduced proper motion and the optical-infrared color diagrams. We fitted the observed spectra with model atmospheres to determine their atmospheric parameters. We discuss attempts to determine the system ages and the effect of metallicity.

引用

页码：147 / 148

页数：2

共 9 条

[1] Grids of white dwarf evolutionary models with masses from M=0.1 to 1.2 M⊙ [J].

Benvenuto, OG ;

Althaus, LG .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 303 (01) :30-38

[2] M dwarfs: effective temperatures, radii and metallicities [J].

Casagrande, Luca ;

Flynn, Chris ;

Bessell, Michael .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 389 (02) :585-607

[3] SPECTRA COLORS LUMINOSITIES AND MOTIONS OF WHITE DWARFS [J].

EGGEN, OJ ;

GREENSTEIN, JL .

ASTROPHYSICAL JOURNAL, 1965, 141 (01) :83-+

[4] Spectropolarimetric survey of hydrogen-rich white dwarf stars [J].

Kawka, A. ;

Vennes, S. ;

Schmidt, G. D. ;

Wickramasinghe, D. T. ;

Koch, R. .

ASTROPHYSICAL JOURNAL, 2007, 654 (01) :499-520

[5] WIDE DOUBLE STARS WITH COMMON PROPER MOTION [J].

LUYTEN, WJ .

ASTROPHYSICS AND SPACE SCIENCE, 1988, 142 (1-2) :17-19

[6] Improved astrometry and photometry for the Luyten catalog. II. Faint stars and the revised catalog [J].

Salim, S ;

Gould, A .

ASTROPHYSICAL JOURNAL, 2003, 582 (02) :1011-1031

[7] The chromospheric activity and ages of M dwarf stars in wide binary systems [J].

Silvestri, NM ;

Hawley, SL ;

Oswalt, TD .

ASTRONOMICAL JOURNAL, 2005, 129 (05) :2428-2450

[8]

SMITH JA, 1997, THESIS FLORIDA I TEC

[9]

van Altena W. F., 1995, The General Catalogue of Trigonometric stellar Parallaxes

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