PG 1159-035
From Wikipedia, the free encyclopedia
Star in the constellation Virgo
| Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Virgo |
| Right ascension | 12h 01m 45.9731s[2] |
| Declination | −03° 45′ 40.629″[2] |
| Apparent magnitude (V) | 14.9[3] |
| Characteristics | |
| Evolutionary stage | PG 1159 [4] |
| Spectral type | DOQZ1[5] |
| Variable type | GW Vir [3] |
| Astrometry | |
| Proper motion (μ) | RA: −14.495[2] mas/yr Dec.: −3.207[2] mas/yr |
| Parallax (π) | 1.6905±0.0642 mas [2] |
| Distance | 1,930 ± 70 ly (590 ± 20 pc) |
| Details | |
| Mass | 0.63[6] M☉ |
| Radius | 0.0254 ± 0.005[7] R☉ |
| Luminosity (bolometric) | 200[7] L☉ |
| Surface gravity (log g) | 7.59[6] cgs |
| Temperature | 136,000[6] K |
| Other designations | |
| GW Vir, GW Virginis, 2E 2572, WD 1159-034[8] | |
| Database references | |
| SIMBAD | data |
PG 1159-035 is the prototypical PG 1159 star after which the class of PG 1159 stars was named. It was discovered in the Palomar-Green survey of ultraviolet-excess stellar objects [9] and, like the other PG 1159 stars, is in transition between being the central star of a planetary nebula and being a white dwarf.[4]
The luminosity of PG 1159-035 was observed to vary in 1979,[10] and it was given the variable star designation GW Virginis (abbreviation GW Vir) in 1985.[11] Variable PG 1159 stars may be called GW Vir stars, or the class may be split into DOV and PNNV stars.[12] [13] The variability of PG 1139-035, like that of other GW Vir stars, arises from non-radial gravity wave pulsations within itself.[14] Its light curve was observed intensively by the Whole Earth Telescope over a 264-hour period in March 1989, and over 100 of its vibrational modes have been found in the resulting vibrational spectrum, with periods ranging from 300 to 1,000 seconds.[15] [16]
References
[edit ]- ^ Winget, D. E.; Kepler, S. O.; Robinson, E. L.; Nather, R. E.; O’Donoghue, Darragh (May 1985). "A measurement of secular evolution in the pre-white dwarf star PG 1159-035". The Astrophysical Journal. 292: 606–613. Bibcode:1985ApJ...292..606W. doi:10.1086/163193 .
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211 . Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940 . S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.
- ^ a b Jahn, D.; Rauch, T.; Reiff, E.; Werner, K.; Kruk, J. W.; Herwig, F. (2007). "High-resolution ultraviolet spectroscopy of PG 1159-035 with HST and FUSE". Astronomy and Astrophysics. 462 (1): 281. arXiv:astro-ph/0610592 . Bibcode:2007A&A...462..281J. doi:10.1051/0004-6361:20065901. S2CID 17679220.
- ^ Wesemael, F.; Greenstein, J. L.; Liebert, James; Lamontagne, R.; Fontaine, G.; Bergeron, P.; Glaspey, J. W. (1993). "An Atlas of Optical Spectra of White-Dwarf Stars". Publications of the Astronomical Society of the Pacific. 105: 761. Bibcode:1993PASP..105..761W. doi:10.1086/133228.
- ^ a b c Chen, Y. H. (2019). "Asteroseismology of the DOV star PG 1159-035". Monthly Notices of the Royal Astronomical Society. 488 (2): 2253. arXiv:1907.01137 . Bibcode:2019MNRAS.488.2253C. doi:10.1093/mnras/stz1813 .
- ^ a b Kawaler, Steven D.; Bradley, Paul A. (1994). "Precision asteroseismology of pulsating PG 1159 stars". The Astrophysical Journal. 427: 415. Bibcode:1994ApJ...427..415K. doi:10.1086/174152.
- ^ "PG 1159-035". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 11 June 2007.
- ^ Green, R. F.; Schmidt, M.; Liebert, J. (1986). "The Palomar-Green Catalog of Ultraviolet-Excess Stellar Objects". The Astrophysical Journal Supplement Series. 61: 305. Bibcode:1986ApJS...61..305G. doi:10.1086/191115 . CDS ID II/207 Archived 2007年02月20日 at the Wayback Machine.
- ^ McGraw, J. T.; Starrfield, S. G.; Liebert, J.; Green, R. (1979). "PG 1159-035: A New, Hot, Non-Da Pulsating Degenerate". IAU Colloq. 53: White Dwarfs and Variable Degenerate Stars: 377. Bibcode:1979wdvd.coll..377M.
- ^ Kholopov, P. N.; Samus, N. N.; Kazarovets, E. V.; Perova, N. B. (1985). "The 67th Name-List of Variable Stars". Information Bulletin on Variable Stars. 2681: 1. Bibcode:1985IBVS.2681....1K.
- ^ Nagel, T.; Werner, K. (2004). "Detection of non-radial g-mode pulsations in the newly discovered PG 1159 star <ASTROBJ>HE 1429-1209</ASTROBJ>". Astronomy and Astrophysics. 426. arXiv:astro-ph/0409243 . Bibcode:2004A&A...426L..45N. doi:10.1051/0004-6361:200400079. S2CID 9481357.
- ^ Quirion, P. -O; Fontaine, G.; Brassard, P. (2007). "Mapping the Instability Domains of GW vir Stars in the Effective Temperature-Surface Gravity Diagram". The Astrophysical Journal Supplement Series. 171 (1): 219. Bibcode:2007ApJS..171..219Q. doi:10.1086/513870. S2CID 122695910.
- ^ Winget, D. E. (1998). "Asteroseismology of white dwarf stars". Journal of Physics: Condensed Matter. 10 (49): 11247–11261. Bibcode:1998JPCM...1011247W. doi:10.1088/0953-8984/10/49/014. S2CID 250749380.
- ^ Winget, D. E.; et al. (1991). "Asteroseismology of the DOV Star PG 1159-035 with the Whole Earth Telescope". The Astrophysical Journal. 378: 326. Bibcode:1991ApJ...378..326W. doi:10.1086/170434. hdl:10183/108718 .
- ^ Costa, J. E. S.; et al. (2008). "The pulsation modes of the pre-white dwarf PG 1159-035". Astronomy and Astrophysics. 477 (2): 627. arXiv:0711.2244 . Bibcode:2008A&A...477..627C. doi:10.1051/0004-6361:20053470. S2CID 6762152.