Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...379..715r&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 379, Oct. 1, 1991, p. 715-720. Research supported by USAF.
Astronomy and Astrophysics
Astrophysics
19
Cataclysmic Variables, Eclipsing Binary Stars, Stellar Mass Accretion, White Dwarf Stars, X Ray Binaries, Charge Coupled Devices, Heao 1, Light Curve, Main Sequence Stars, Polarized Radiation
Scientific paper
The discovery is reported of an eclipsing cataclysmic variable that exhibits up to 10 percent circular polarization at optical wavelengths, securing its classification as an AM Herculis type binary. The object, H1907 + 609, was located with the guidance of X-ray positions from the HEAO 1 survey. Optical CCD photometry exhibits deep eclipses, from which is derived a precise orbital period of 1.743750 hr. The eclipse duration suggests an inclination angle about 80 deg for a main-sequence secondary star. The optical flux has been persistently faint during observations spanning 1987-1990, while the X-ray measurements suggest long-term X-ray variability. The polarization and photometric light curves can be interpreted with a geometric model in which most of the accretion is directed toward a single magnetic pole, with an accretion spot displaced about 17 deg in longitude from the projection of the secondary star on the white dwarf surface.
Remillard Ron A.
Silber Andrew
Stroozas Brett A.
Tapia Saul
No associations
LandOfFree
The eclipsing AM Herculis variable H1907 + 690 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The eclipsing AM Herculis variable H1907 + 690, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The eclipsing AM Herculis variable H1907 + 690 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1875264