A Study of Four Contact Binary Systems Using the DDO Photometric System

Details A Study of Four Contact Binary Systems Using the DDO Photometric System A Study of Four Contact Binary Systems Using the DDO Photometric System

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.196..305h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 196, P. 305, 1981

Astronomy and Astrophysics

Astronomy

59

Scientific paper

Complete light curves and colour index curves on the DDO photometric system are presented for the W-type contact binary systems W UMa, XY Leo, TX Cnc and AH Vir. The data have been analysed using Rucinski's light curve synthesis code under a variety of constraints. it is found that the gravity darkening exponent must be small (β ≃ 0.00) for these late-type stars (F8-K2). it then follows that the degree of contact between the components is of the order of 25 per cent, rather than the 15 per cent derived if Lucy's value of β =0.08 is adopted, and that there is some indication that the discrepancy between photometric and spectroscopic mass ratios is reduced when β = 0.00 is used.
The significant asymmetries in the light curves of W UMa and AH Vir observed at this epoch may be readily understood in terms of starspots of small extent (≲ 10 per cent of the visible surface of one component).

Affiliated with

Also associated with

No associations

Rating

A Study of Four Contact Binary Systems Using the DDO Photometric System 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 A Study of Four Contact Binary Systems Using the DDO Photometric System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Study of Four Contact Binary Systems Using the DDO Photometric System will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1689731