室女座GW
外观
观测资料 历元 J2000.0 (ICRS) | |
---|---|
星座 | 室女座 |
星官 | |
赤经 | 12h 01m 46.1s[1] |
赤纬 | -03° 45′ 39″[1] |
视星等(V) | 14.9[2] |
天体测定 | |
距离 | 1,400 ± 100 ly (440 ± 40[3] pc) |
详细资料 | |
质量 | 0.59 ± 0.01[3] M☉ |
半径 | 0.0254 ± 0.005[3] R☉ |
表面重力 (log g) | 7.38 ± 0.1[3] |
亮度 (bolometric) | 200[3] L☉ |
温度 | 136,000[3] K |
其他命名 | |
GW Vir, GW Virginis, 2E 2572, WD 1159-034
| |
参考数据库 | |
SIMBAD | 资料 |
PG 1159-035是PG 1159星的原型,之后就是以PG 1159作为这一类恒星的名称,这颗恒星是在帕洛马绿色巡天调查紫外线过量的恒星时发现的天体 [1],并且像其它的PG 1159星一样,是中心正在转变成为行星状星云和白矮星的天体[4]。
在1979年发现PG 1159-035的亮度会变化[5],并且因而在1985年被归类为变星,标示为室女座GW[6]。PG 1159型变星可以称为室女GW型变星 ,或是再分为DOV和PNNV星[7][8]。PG 1139-035的变化,和其他的室女GW型变星一样,是由于本身内部的引力波在非径向方向上的脉动[9]。它的光度曲线在1989年3月曾经被Whole Earth Telescope仔细的观察超过264小时的时段,和在变化的光谱中发现超过100种周期在300至1,000秒的变光模式 [10][11]。
参考资料
[编辑]- ^ 1.0 1.1 1.2 The Palomar-Green catalog of ultraviolet-excess stellar objects, R. F. Green, M. Schmidt, and J. Liebert, Astrophysical Journal Supplement 61 (June 1986), pp. 305–352. CDS ID II/207 互联网档案馆的存档,存档日期2007-02-20..
- ^ SIMBAD, accessed June 11, 2007.
- ^ 3.0 3.1 3.2 3.3 3.4 3.5 Table 2, Precision asteroseismology of pulsating PG 1159 stars, Steven D. Kawaler and Paul A. Bradley, Astrophysical Journal, Part 1 427, #1 (May 1994), pp. 415–428, doi:10.1086/174152, Bibcode:1994ApJ...427..415K.
- ^ High-resolution ultraviolet spectroscopy of PG 1159-035 with HST and FUSE, D. Jahn, T. Rauch, E. Reiff, K. Werner, and J. W. Kruk, Astronomy and Astrophysics 462, #1 (January 2007), pp. 281–292.
- ^ PG1159-035: A new, hot, non-DA pulsating degenerate, J. T. McGraw, S. G. Starrfield, J. Liebert, and R. F. Green, pp. 377–381 in White Dwarfs and Variable Degenerate Stars, IAU Colloquium #53, ed. H. M. van Horn and V. Weidemann, Rochester: University of Rochester Press, 1979.
- ^ The 67th Name-List of Variable Stars, P. N. Kholopov, N. N. Samus, E. V. Kazarovets, and N. B. Perova, Information Bulletin on Variable Stars, #2681, March 8, 1985.
- ^ §1, Detection of non-radial g-mode pulsations in the newly discovered PG 1159 star HE 1429-1209 (页面存档备份,存于互联网档案馆), T. Nagel and K. Werner, Astronomy and Astrophysics 426 (2004), pp. L45–L48.
- ^ §1.1, Mapping the Instability Domains of GW Vir Stars in the Effective Temperature-Surface Gravity Diagram (页面存档备份,存于互联网档案馆), Quirion, P.-O., Fontaine, G., Brassard, P., Astrophysical Journal Supplement Series 171 (2007), pp. 219–248.
- ^ Asteroseismology of white dwarf stars, D. E. Winget, Journal of Physics: Condensed Matter 10, #49 (December 14, 1998), pp. 11247–11261. DOI 10.1088/0953-8984/10/49/014.
- ^ Asteroseismology of the DOV star PG 1159-035 with the Whole Earth Telescope, D. E. Winget, R. E. Nather, J. C. Clemens, J. Provencal, S. J. Kleinman, P. A. Bradley, M. A. Wood, C. F. Claver, M. L. Frueh, A. D. Grauer, B. P. Hine, C. J. Hansen, G. Fontaine, N. Achilleos, D. T. Wickramasinghe, T. M. K. Marar, S. Seetha, B. N. Ashoka, D. O'Donoghue, B. Warner, D. W. Kurtz, D. A. Buckley, J. Brickhill, G. Vauclair, N. Dolez, M. Chevreton, M. A. Barstow, J. E. Solheim, A. Kanaan, S. O. Kepler, G. W. Henry, and S. D. Kawaler, Astrophysical Journal 378 (September 1, 1991), pp. 326–346.
- ^ The pulsation modes of the pre-white dwarf PG 1159-035, Costa, J. E. S.; Kepler, S. O.; Winget, D. E.; O'Brien, M. S.; Kawaler, S. D.; Costa, A. F. M.; Giovannini, O.; Kanaan, A.; Mukadam, A. S.; Mullally, F.; Nitta, A.; Provençal, J. L.; Shipman, H.; Wood, M. A.; Ahrens, T. J.; Grauer, A.; Kilic, M.; Bradley, P. A.; Sekiguchi, K.; Crowe, R.; Jiang, X. J.; Sullivan, D.; Sullivan, T.; Rosen, R.; Clemens, J. C.; Janulis, R.; O'Donoghue, D.; Ogloza, W.; Baran, A.; Silvotti, R.; Marinoni, S.; Vauclair, G.; Dolez, N.; Chevreton, M.; Dreizler, S.; Schuh, S.; Deetjen, J.; Nagel, T.; Solheim, J.-E.; Gonzalez Perez, J. M.; Ulla, A.; Barstow, M.; Burleigh, M.; Good, S.; Metcalfe, T. S.; Kim, S.-L.; Lee, H.; Sergeev, A.; Akan, M. C.; Çakırlı, Ö.; Paparo, M.; Viraghalmy, G.; Ashoka, B. N.; Handler, G.; Hürkal, Ö.; Johannessen, F.; Kleinman, S. J.; Kalytis, R.; Krzesinski, J.; Klumpe, E.; Larrison, J.; Lawrence, T.; Meištas, E.; Martinez, P.; Nather, R. E.; Fu, J.-N.; Pakštienė, E.; Rosen, R.; Romero-Colmenero, E.; Riddle, R.; Seetha, S.; Silvestri, N. M.; Vučković, M.; Warner, B.; Zola, S.; Althaus, L. G.; Córsico, A. H.; Montgomery, M. H., Astronomy and Astrophysics 477 (January 2, 2008), pp.627–640.