V373 Scuti

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V373 Scuti
V373SctLocation.png
Location of V373 Scuti (circled in red)
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Scutum
Right ascension 18h 55m 26.71s [1]
Declination −07° 43′ 05.5″ [1]
Apparent magnitude  (V)7.1 [2] (Max) – 18.7 [3]
Details
Mass 1.02 [4]   M☉
Rotation 258.3 s [5]
Other designations
V373 Sct, AAVSO  1850-07, NOVA Sct 1975 [6]
Database references
SIMBAD data

V373 Scuti was a nova which appeared in 1975 in the southern constellation of Scutum. [3] It was announced on June 15, 1975 by Paul Wild at the Zimmerwald Observatory, Switzerland. [7] At the time the magnitude was about 7.9. [8] The peak magnitude of 7.1 occurred a month earlier on May 11. [2]

A visual band light curve for V373 Scuti. The main plot shows the decline from the nova event. Purple points are from Rosino (1978) and blue points are AAVSO data. The inset plot, adapted from Woudt and Warner (2003), shows short timescale variations continuing long after the nova event. V373SctLightCurve.png
A visual band light curve for V373 Scuti. The main plot shows the decline from the nova event. Purple points are from Rosino (1978) and blue points are AAVSO data. The inset plot, adapted from Woudt and Warner (2003), shows short timescale variations continuing long after the nova event.

The light curve of this nova declined as a typical power law following the peak, but showed significant jittery behavior. [10] After about 40–50 days emission lines began to appear in the spectrum, which allowed measurement of the mean expansion velocity as 955±130 km/s. [8] The large amplitude flickering as well as other indicators suggest a magnetic influence, making this a candidate intermediate polar system. A luminosity modulation of 258.3 seconds is most likely due to rotation of the white dwarf. [5] The system has an orbital period of 3.69 ± 0.07 h, [3] and the light curve suggests a high orbital inclination. [5]

References

  1. 1 2 Downes, Ronald A.; et al. (June 2001), "A Catalog and Atlas of Cataclysmic Variables: The Living Edition", The Publications of the Astronomical Society of the Pacific, 113 (784): 764–768, arXiv: astro-ph/0102302 , Bibcode:2001PASP..113..764D, doi:10.1086/320802, S2CID   16285959
  2. 1 2 Duerbeck, Hilmar W. (March 1987), "A Reference Catalogue and Atlas of Galactic Novae", Space Science Reviews, 45 (1–2): 1–14, Bibcode:1987SSRv...45....1D, doi:10.1007/BF00187826, S2CID   115854775
  3. 1 2 3 Tappert, C.; et al. (December 2013), "Life after eruption - III. Orbital periods of the old novae V365 Car, AR Cir, V972 Oph, HS Pup, V909 Sgr, V373 Sct and CN Vel", Monthly Notices of the Royal Astronomical Society, 436 (3): 2412–2425, arXiv: 1310.0394 , Bibcode:2013MNRAS.436.2412T, doi: 10.1093/mnras/stt1747 , S2CID   118363741
  4. ↑ Shara, Michael M.; et al. (June 2018), "The Masses and Accretion Rates of White Dwarfs in Classical and Recurrent Novae", The Astrophysical Journal, 860 (2): 11, arXiv: 1804.06880 , Bibcode:2018ApJ...860..110S, doi: 10.3847/1538-4357/aabfbd , S2CID   55851634, 110
  5. 1 2 3 4 Woudt, Patrick A.; Warner, Brian (April 2003), "High-speed photometry of faint cataclysmic variables - III. V842 Cen, BY Cir, DD Cir, TV Crv, V655 CrA, CP Cru, V794 Oph, V992 Sco, EU Sct and V373 Sct", Monthly Notices of the Royal Astronomical Society, 340 (3): 1011–1019, arXiv: astro-ph/0301241 , Bibcode:2003MNRAS.340.1011W, doi: 10.1046/j.1365-8711.2003.06367.x , S2CID   119440496
  6. ↑ "V373 Sct". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-12-06.
  7. ↑ Wild, P. (June 1975), Gingerich, O. (ed.), "Probable Nova in Scutum", IAU Circular, 2791: 1, Bibcode:1975IAUC.2791....1W
  8. 1 2 3 Rosino, L. (May 1978), "Spectral evolution of Nova V400 Per (1974) and Nova V373 Sct (1975)", Astrophysics and Space Science, 55 (2): 383–394, Bibcode:1978Ap&SS..55..383R, doi:10.1007/BF00642265, S2CID   121632043
  9. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  10. ↑ Strope, Richard J.; et al. (July 2010), "Catalog of 93 Nova Light Curves: Classification and Properties", The Astronomical Journal, 140 (1): 34–62, arXiv: 1004.3698 , Bibcode:2010AJ....140...34S, doi:10.1088/0004-6256/140/1/34, S2CID   118537823
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