Near-infrared time-resolved spectroscopy of the cataclysmic variable YY Draconis

Details Near-infrared time-resolved spectroscopy of the cataclysmic variable YY Draconis Near-infrared time-resolved spectroscopy of the cataclysmic variable YY Draconis

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...370..370m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, March 20, 1991, p. 370-383.

Astronomy and Astrophysics

Astrophysics

25

Astronomical Spectroscopy, Binary Stars, Cataclysmic Variables, Line Spectra, Near Infrared Radiation, Astronomical Photometry, Charge Coupled Devices, Dwarf Stars, Emission Spectra, Radial Velocity

Scientific paper

Time-resolved near-infrared (8100-8600 A) spectrophotometry and Johnson B-band CCD photometry of the cataclysmic binary YY Dra are presented. The spectra show the presence of the Na I doublet in absorption from the secondary, as well as sharp and broad Ca II emission lines. The sharp Ca II emission lines appear to originate on or near the secondary star because they are visible only during superior conjunction of the secondary star, their radial velocities vary in phase with the Na I absorption lines, and their K-velocity is considerably smaller than observed for the Na I lines. The radial velocity variation of the Na I near-infrared doublet yield an orbital period for YY Dra of P = 0.164988 + or - 0.00023 days. A spectral type of dM 4 + or - 1 for the secondary star is deduced based on the strength of its near-infrared spectral features. The distance to YY Dra is 155 + or - 35 pc based on an application of Bailey's method.

Affiliated with

Also associated with

No associations

Rating

Near-infrared time-resolved spectroscopy of the cataclysmic variable YY Draconis 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 Near-infrared time-resolved spectroscopy of the cataclysmic variable YY Draconis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-infrared time-resolved spectroscopy of the cataclysmic variable YY Draconis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1602822