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GQ Muscae, also known as Nova Muscae 1983 is a nova in the constellation Musca, which was discovered by William Liller at 03:20 UT on 18 January 1983.[8] At the time of its discovery it was a magnitude ≈7.2 object, and it subsequently faded.[3][9]

GQ Muscae

A visual band light curve for GQ Muscae. The main plot shows the decline from the 1983 eruption, plotted with data from the AAVSO,[1] Whitelock et al.[2] and Liller.[3] The inset plot (adapted from Narloch et al.[4]) shows the post-eruption variability seen in 1992.
Observation data
Epoch J2000      Equinox J2000
Constellation Musca
Right ascension 11h 52m 02.4285s[5]
Declination −67° 12′ 20.9911″[5]
Apparent magnitude (V) 7.2 Max.
21 Min.[6]
Characteristics
Variable type Nova[6]
Astrometry
Proper motion (μ) RA: −5.056±0.451[5] mas/yr
Dec.: 1.193±0.324[5] mas/yr
Parallax (π)0.4702 ± 0.2193 mas[5]
Distance2480+3780
−300[6] pc
Other designations
AAVSO 1147-66, Nova Mus 1983, Gaia DR2 5236081560713688448[7]
Database references
SIMBADdata

GQ Muscae is a binary star system composed of a white dwarf and small star, the donor star, that is about 10% as massive as the Sun. The two orbit each other every 1.4 hours. The white dwarf accumulates material from the donor star until a runaway nuclear thermonuclear reaction erupts, as it did in 1983.[9] GQ Muscae was the first nova from which X-rays were detected.[10]


References


  1. "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. Whitelock, P. A.; Carter, B. S.; Feast, M. W.; Glass, I. S.; Laney, D.; Menzies, J. W.; Walsh, J.; Williams, P. M. (November 1984). "Infrared and optical observations of Nova Mus 1983". Monthly Notices of the Royal Astronomical Society. 211: 421–432. doi:10.1093/mnras/211.2.421. Retrieved 30 January 2022.
  3. Liller, William (1990). Cambridge Astronomy Guide. Cambridge, United Kingdom: CUP Archive. p. 105. ISBN 0-521-39915-7.
  4. Narloch, W.; Kaluzny, J.; Krzeminski, W.; Pych, W.; Rozyczka, M.; Shectman, S.; Thompson, I. B.; Tomov, T. (January 2014). "New Observations of the Old Magnetic Nova GQ Muscae". Baltic Astronomy. 23: 1–7. doi:10.1515/astro-2017-0168. Retrieved 30 January 2022.
  5. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  6. Schaefer, Bradley E. (2018). "The distances to Novae as seen by Gaia". Monthly Notices of the Royal Astronomical Society. 481 (3): 3033–3051. arXiv:1809.00180. Bibcode:2018MNRAS.481.3033S. doi:10.1093/mnras/sty2388. S2CID 118925493.
  7. "GQ Muscae". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-19.
  8. Marsden, Brian G. (20 January 1983). "Nova Muscae 1983". International Astronomical Union Circular. 3764. Retrieved 30 January 2022.
  9. Hachisu, Izumi; Kato, Mariko; Cassatella, Angelo (2008). "A Universal Decline Law of Classical Novae. III. GQ Muscae 1983". The Astrophysical Journal. 687 (2): 1236–52. arXiv:0806.4253. Bibcode:2008ApJ...687.1236H. doi:10.1086/591415. S2CID 50476380.
  10. Duerbeck, H.W. (2009). "New Stars and Telescopes: Nova Research in the Last Four Centuries" (PDF). Astronomische Nachrichten. 330 (6): 568–73. Bibcode:2009AN....330..568D. doi:10.1002/asna.200911218. Archived from the original (PDF) on 2015-09-24. Retrieved 2014-03-09.


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