Photometry and the light curve of the optical counterpart of the eclipsing millisecond pulsar 1957+20

Abstract

view Abstract Citations (41) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photometry and the Light Curve of the Optical Counterpart of the Eclipsing Millisecond Pulsar 1957+20 Djorgovski, S. ; Evans, Charles R. Abstract The authors confirm the discovery of the optical counterpart to the eclipsing millisecond pulsar 1957+20 recently reported by Fruchter, Stinebring, and Taylor. A nearly complete light curve derived from 58 CCD images taken in the Gunn r band has been obtained and found to match the 9.17 hr orbital period of the pulsar. A detailed analysis of these data is presented. Assuming the distance 0.9 kpc derived from the radio dispersion measure, and an extinction of AV = 1 mag, the authors derive an effective temperature of 5800K, an aboslute visual magnitude of the pulsar companion of 10.5 and its radius to be ≅0.16 R_sun;, close to that of a degenerate hydrogen dwarf. Publication: The Astrophysical Journal Pub Date: December 1988 DOI: 10.1086/185340 Bibcode: 1988ApJ...335L..61D Keywords: Astronomical Photometry; Companion Stars; Eclipsing Binary Stars; Light Curve; Pulsars; Flux Quantization; Stellar Color; Stellar Magnitude; Variable Stars; Astronomy; PHOTOMETRY; PLANETS: GENERAL; PULSARS; STARS: BINARIES; STARS: VARIABLES full text sources ADS | data products SIMBAD (1)