The two novae of 1984 in Vulpecula

Astronomy and Astrophysics – Astronomy

Scientific paper

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Novae, Stellar Spectrophotometry, Brightness Distribution, Light Curve, Near Infrared Radiation, Stellar Spectra

Scientific paper

Various astronomical data gathered in 1984 on the two novae that occurred in Vulpecula are summarized. The first event, on July 27, was characterized by a rapid increase in brightness which lasted two days, followed by a more steady climb to 6.4 mag over the following week. Once the brightness fell to around 4 mag, brightness slowly oscillated downward for several months. The event has been estimated to have occurred at a distance of 1.2 kpc. A 6.8 mag event occurred near to the location of the first about 6 months later, reaching a maximum of 5.5 mag several days later. The brightness decreased to 10 mag over a period of several months. The light curves and photometric signatures which were obtained from the events are discussed in terms of the elemental compositions of the two objects as determined by the recorded spectra.

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