V373 Scuti
1975 Nova in the constellation Scutum
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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]
 | |
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| 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 |
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]