Nova Monocerotis 1975 (= A0620-00)
Abstract
D. Ya. Martynov, Sternberg Astronomical Institute, reports: "During a 20-min interval on Sept. 10.9 UT Sheffer and Moskalenko observed this source with the x-ray telescope on board the Salyut-4 space station. The ratios of the fluxes from this source to that of Sco X-1 (observed on July 5) were as follows: 0.2-0.6 keV, 2.26; 0.6-0.9, 6.01; 0.9-2, 4.1; 2-3.5, 2.1; 3.5-6, 6.0; 6-10, 10.45. Estimation from the spectral shape in the soft region gives the total amount of hydrogen in the line of sight to A0620-00 as 10**21 to 10**22 atoms; the distance is thus not larger than to Sco X-1." J. Bortle, Brooks Observatory, provides the following visual magnitude estimates: Sept. 29.4 UT, 11.8; 30.3, 11.9. Corrigendum. On IAUC 2830, the last sentence should read: "B-V values ranged between +0.05 and +0.20."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- October 1975
- Bibcode:
- 1975IAUC.2846....1M