ASAS Eclipsing Binaries with Observed High Period Change Rates

Details ASAS Eclipsing Binaries with Observed High Period Change Rates ASAS Eclipsing Binaries with Observed High Period Change Rates

2007-03-27

arxiv.org/abs/astro-ph/0703705v1

Mon.Not.Roy.Astron.Soc.378:757-767,2007

Astronomy and Astrophysics

Astrophysics

12 pages, 13 figures, submitted to MNRAS

Scientific paper

10.1111/j.1365-2966.2007.11828.x

We present 31 bright eclipsing contact and semi-detached binaries that showed high period change rates in a 5 year interval in observations by the All-Sky Automated Survey (ASAS). The time-scales of these changes range from only 50 up to 400 kyr. The orbital periods of 10 binaries are increasing and of 21 are decreasing, and even a larger excess is seen in contact binaries, where the numbers are 5 and 17, respectively. Period change has previously been noticed for only two of these binaries; our observations confirmed a secular period drift for SV Cen and period oscillations for VY Cet. The spectroscopic quadruple system V1084 Sco shows both period change and brightness modulation. All investigated binaries were selected from a sample of 1711 (1135 contact and 576 semi-detached) that fulfilled all criteria of data quality. We also introduce a "branch" test to check if luminosity changes on part of the binary's photosphere has led to a spurious or poorly characterized period change detection.

Affiliated with

Also associated with

No associations

Rating

ASAS Eclipsing Binaries with Observed High Period Change Rates 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 ASAS Eclipsing Binaries with Observed High Period Change Rates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASAS Eclipsing Binaries with Observed High Period Change Rates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-271909