Accurate Period Determination of an Eclipsing Binary X-Ray Source in M33

Details Accurate Period Determination of an Eclipsing Binary X-Ray Source in M33 Accurate Period Determination of an Eclipsing Binary X-Ray Source in M33

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...426l..55s&link_type=abstract

Astrophysical Journal Letters v.426, p.L55

Astronomy and Astrophysics

Astronomy

7

Errata, Addenda

Scientific paper

In the Letter "Accurate Period Determination of an Eclipsing Binary X- Ray Source in M33" by Eric Schulman, Joel N. Bregman, Alfonso Collura, Fabio Reale, and Giovanni Peres (ApJ, 418, L67 [1993]), the time between the ROSAT and Einstein Observatory observations was incorrectly calculated, leading to an incorrect period determination of P_orb_ = 154286 s (1.78572^d^). The correct period is P_orb_ = 154298 s (1.78586^d^) and the center of the first eclipse observed by Einstein occurred at J.D. 2,444,087.6061. The figures are unchanged, except that the times shown in Figures 1d and 1e are too large by 4.32 x 10^5^s. The correct stop time of the ROSAT observation section RH600020b is 00^h^32^m^52^s^ (Table 1).

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