Orbital periods of recurrent novae

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185733· OSTI ID:6692042

Schaefer, B E ^[1]

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1. NASA, Goddard Space Flight Center, Greenbelt, MD (USA)

The class of recurrent novae (RN) with thermonuclear runaways contains only three systems (T Pyx, U Sco, and V394 CrA), for which no orbital periods are known. This paper presents a series of photometric observations where the orbital periods for all three systems are discovered. T Pyx is found to have sinusoidal modulation with an amplitude of 0.08 mag and a period of 2.3783 h (with a possible alias of 2.6403 h). U Sco is found to be an eclipsing system with an eclipse amplitude of roughly 1.5 mag and an orbital period of 1.2344 days. V394 CrA is found to have sinusoidal modulation with an amplitude of 0.5 mag and a period of 0.7577 days. Thus two out of three RN with thermonuclear runaways (or five out of six for all RN) have evolved companions. 16 refs.

• OSTI ID: 6692042
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 355; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
FOURIER TRANSFORMATION
INTEGRAL TRANSFORMATIONS
NOVAE
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
ORBITS
SPECTRA
SPECTROPHOTOMETRY
STARS
SYNTHESIS
THERMONUCLEAR REACTIONS
TRANSFORMATIONS
VARIABLE STARS