Optical observations of the recurrent nova associated with A0620--00: 1917-- 1975

Journal Article · Thu Jan 01 04:00:00 EST 1976 · Astrophys. J., Lett., v. 203, no. 1, pp. L17-L19

DOI:https://doi.org/10.1086/182009· OSTI ID:4004081

Eachus, L A; Wright, E L; Liller, W

A previous outburst of the eruptive star associated with the transient X- ray source A0620-00, first detected in 1975 August, has been discovered on Harvard plates taken in 1917. We present the light curve of the earlier event and conclude that this star is a typical recurrent nova with an absolute magnitude M/sub V/=-5.9+-0.5 at maximum brightness. The A0620-00 star has no detectable proper motion, and there appears to be little interstellar absorption. Our best estimate of its distance is 11+-3 kpc. A0620-00 is only 30.6$sup 0$ from the direction of the galactic anticenter, and therefore must be located well beyond the detectable limits of our Galaxy. (AIP)

• Research Organization: Center for Astrophysics, Harvard College Observatory and Smithsonian Astrophysical Observatory
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-026974
• OSTI ID: 4004081
• Journal Information: Astrophys. J., Lett., v. 203, no. 1, pp. L17-L19, Journal Name: Astrophys. J., Lett., v. 203, no. 1, pp. L17-L19; ISSN AJLEA
• Country of Publication: United States
• Language: English

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*COSMIC X-RAY SOURCES-- VISIBLE RADIATION
*NOVAE-- PHOTOMETRY
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BRIGHTNESS
N56200* --Physics (Astrophysics & Cosmology)--Stars
N56300 --Physics (Astrophysics & Cosmology)--Quasi-stellar
Radio & X-Ray Sources
SOFT X RADIATION
VARIATIONS