PG 1159-035

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PG 1159-035
GWVirLightCurve.png
A light curve for GW Virginis, adapted from Winget et al. (1985) [1]
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

  1. ↑ 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 .
  2. 1 2 3 4 5 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.
  3. 1 2 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.
  4. 1 2 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.
  5. ↑ 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.
  6. 1 2 3 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 .
  7. 1 2 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.
  8. ↑ "PG 1159-035". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 11 June 2007.
  9. ↑ 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 2007-02-20 at the Wayback Machine .
  10. ↑ 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.
  11. ↑ 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.
  12. ↑ 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.
  13. ↑ 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.
  14. ↑ 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.
  15. ↑ 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 .
  16. ↑ 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.
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