SIMBAD references

2004IAUC.8396....2S - IAU Circ., 8396, 2 (2004/August-0)

RS Ophiuchi.


Abstract (from CDS):

B. E. Schaefer, Louisiana State University, writes on the discovery of a nova eruption of RS Oph in early 1907, as evidenced by the presence of a post-eruption dip in the light curve on archival photographic plates at the Harvard College Observatory. From 1907 May 3 to Sept. 4, the magnitude was at 12.6 < B < 13.0 on eight plates, while RS Oph was at 11.2 < B < 12.2 before 1906 Oct. 20 (the seasonal gap due to proximity to the sun is from 1906 Oct. 21 to 1907 May 2) and after 1907 Sept. 18 (with three plates from Sept. 18-28, just before the start of the seasonal gap). Such dips (with durations of 0.4-0.8 year) are seen only after all eruptions of this recurrent nova, so RS Oph must have had an eruption in early 1907 when it was hidden by the sun.

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Simbad objects: 1

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