Astronomy:PG 1159-035
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Virgo |
| Right ascension | 12h 01m 45.9729s[2] |
| Declination | −03° 45′ 40.6279″[2] |
| Apparent magnitude (V) | 14.9[3] |
| Astrometry | |
| Proper motion (μ) | RA: −14.213±0.155[2] mas/yr Dec.: −3.260±0.064[2] mas/yr |
| Parallax (π) | 1.8131 ± 0.0821[2] mas |
| Distance | 1,800 ± 80 ly (550 ± 20 pc) |
| Details | |
| Mass | 0.63[4] M☉ |
| Radius | 0.0254 ± 0.005[5] R☉ |
| Luminosity (bolometric) | 200[5] L☉ |
| Surface gravity (log g) | 7.59[4] cgs |
| Temperature | 136,000[4] K |
| Other designations | |
GW Vir, GW Virginis, 2E 2572, WD 1159-034 | |
| 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[6] and, like the other PG 1159 stars, is in transition between being the central star of a planetary nebula and being a white dwarf.[7]
The luminosity of PG 1159-035 was observed to vary in 1979,[8] and it was given the variable star designation GW Vir in 1985.[9] Variable PG 1159 stars may be called GW Vir stars, or the class may be split into DOV and PNNV stars.[10][11] The variability of PG 1139-035, like that of other GW Vir stars, arises from non-radial gravity wave pulsations within itself.[12] Its light curve has been 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.[13] [14]
References
- ↑ 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. doi:10.1086/163193. Bibcode: 1985ApJ...292..606W.
- ↑ 2.0 2.1 2.2 2.3 2.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ "PG 1159-035". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=PG+1159-035.
- ↑ 4.0 4.1 4.2 Chen, Y. H. (2019). "Asteroseismology of the DOV star PG 1159-035". Monthly Notices of the Royal Astronomical Society 488 (2): 2253. doi:10.1093/mnras/stz1813. Bibcode: 2019MNRAS.488.2253C.
- ↑ 5.0 5.1 Kawaler, Steven D.; Bradley, Paul A. (1994). "Precision asteroseismology of pulsating PG 1159 stars". The Astrophysical Journal 427: 415. doi:10.1086/174152. Bibcode: 1994ApJ...427..415K.
- ↑ Green, R. F.; Schmidt, M.; Liebert, J. (1986). "The Palomar-Green Catalog of Ultraviolet-Excess Stellar Objects". The Astrophysical Journal Supplement Series 61: 305. doi:10.1086/191115. Bibcode: 1986ApJS...61..305G. CDS ID II/207 .
- ↑ 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. doi:10.1051/0004-6361:20065901. Bibcode: 2007A&A...462..281J.
- ↑ 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. doi:10.1051/0004-6361:200400079. Bibcode: 2004A&A...426L..45N.
- ↑ 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. doi:10.1086/513870. Bibcode: 2007ApJS..171..219Q.
- ↑ Winget, D. E. (1998). "Asteroseismology of white dwarf stars". Journal of Physics: Condensed Matter 10 (49): 11247–11261. doi:10.1088/0953-8984/10/49/014. Bibcode: 1998JPCM...1011247W.
- ↑ Winget, D. E. et al. (1991). "Asteroseismology of the DOV Star PG 1159-035 with the Whole Earth Telescope". The Astrophysical Journal 378: 326. doi:10.1086/170434. Bibcode: 1991ApJ...378..326W.
- ↑ Costa, J. E. S. et al. (2008). "The pulsation modes of the pre-white dwarf PG 1159-035". Astronomy and Astrophysics 477 (2): 627. doi:10.1051/0004-6361:20053470. Bibcode: 2008A&A...477..627C.
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