THE RADIAL-VELOCITY OF THE WHITE-DWARF GICLAS 29-38

被引：10
|
作者：
BARNBAUM, C
ZUCKERMAN, B
机构：
[1] Department of Astronomy, Univ. of California, Los Angeles, Los Angeles
来源：
ASTROPHYSICAL JOURNAL | 1992年 / 396卷 / 01期
关键词：
BINARIES; CLOSE; STARS; LOW-MASS; BROWN DWARFS; WHITE DWARFS;
D O I：
10.1086/186510
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The white dwarf Giclas 29-38 displays mysterious excess infrared emission at wavelengths between 2 and 10-mu-m. We measured the radial velocity of G29-38 15 times during the latter half of 1990 and 5 times during the latter half of 1991. Our data, in combination with those of Graham et al., which were obtained during the latter half of 1989, imply that the radial velocity of G29-38 is probably varying with a period of approximately 11.2 months and total amplitude of approximately 10 km s-1. If confirmed, the variation is likely due to either a high-mass brown dwarf or low-mass white dwarf companion.
引用
收藏
页码：L31 / L34
页数：4
相关论文
共 50 条
  • [31] The radial velocity and mass of the white dwarf of EX Hydrae measured with Chandra
    Hoogerwerf, R
    Brickhouse, NS
    Mauche, CW
    ASTROPHYSICAL JOURNAL, 2004, 610 (01): : 411 - 415
  • [32] Surface motion in the pulsating DA white dwarf G29-38
    van Kerkwijk, MH
    Clemens, JC
    Wu, Y
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 314 (02) : 209 - 219
  • [33] Keck speckle imaging of the white dwarf G29-38: No brown dwarf companion detected
    Kuchner, MJ
    Koresko, CD
    Brown, ME
    ASTROPHYSICAL JOURNAL, 1998, 508 (01): : L81 - L83
  • [34] A tidally disrupted asteroid around the white dwarf G29-38
    Jura, M
    ASTROPHYSICAL JOURNAL, 2003, 584 (02): : L91 - L94
  • [35] Understanding the cool DA white dwarf pulsator, G29-38
    Kleinman, SJ
    Nather, RE
    Winget, DE
    Clemens, JC
    Bradley, PA
    Kanaan, A
    Provencal, JL
    Claver, CF
    Watson, TK
    Yanagida, K
    Nitta, A
    Dixson, JS
    Wood, MA
    Grauer, AD
    Hino, BP
    Fontaine, G
    Liebert, J
    Sullivan, DJ
    Wickramasinghe, DT
    Achilleos, N
    Marar, TMK
    Seetha, S
    Ashoka, BN
    Meistas, E
    Leibowitz, EM
    Moskalik, P
    Krzesinski, J
    Solheim, JE
    Bruvold, A
    O'Donoghue, D
    Kurtz, DW
    Warner, B
    Martinez, P
    Vauclair, G
    Dolez, N
    Chevreton, M
    Barstow, MA
    Kepler, SO
    Giovannini, O
    Augusteijn, T
    Hansen, CJ
    Kawaler, SD
    ASTROPHYSICAL JOURNAL, 1998, 495 (01): : 424 - 434
  • [36] THE CASE OF G226-29 - EVIDENCE FOR A PULSATING DA WHITE-DWARF WITH A THICK HYDROGEN LAYER
    FONTAINE, G
    BRASSARD, P
    BERGERON, P
    WESEMAEL, F
    ASTROPHYSICAL JOURNAL, 1992, 399 (01): : L91 - L94
  • [37] The Role of Fingering Convection in Accreting Hydrogen-rich White Dwarfs: the Case of GD 133 and G 29-38
    Wachlin, F. C.
    Vauclair, S.
    Vauclair, G.
    Althaus, L. G.
    20TH EUROPEAN WHITE DWARF WORKSHOP, 2017, 509 : 223 - 226
  • [38] RADIAL-VELOCITY STUDIES OF CATACLYSMIC BINARIES .2. THE ULTRASHORT PERIOD DWARF NOVA T-LEONIS
    SHAFTER, AW
    SZKODY, P
    ASTROPHYSICAL JOURNAL, 1984, 276 (01): : 305 - 315
  • [39] ON THE DISCORDANT MEASUREMENTS OF THE RADIAL-VELOCITY CURVE OF THE LATE-TYPE STAR IN THE DWARF NOVA-SS-CYGNI
    ROBINSON, EL
    ZHANG, EH
    STOVER, RJ
    ASTROPHYSICAL JOURNAL, 1986, 305 (02): : 732 - 739
  • [40] High-resolution spectroscopy of the pulsating white dwarf G29-38
    Thompson, SE
    Clemens, JC
    van Kerkwijk, MH
    Koester, D
    ASTROPHYSICAL JOURNAL, 2003, 589 (02): : 921 - 930
12345