Long-term color variations of the peculiar X-ray binary V Sagittae

Details Long-term color variations of the peculiar X-ray binary V Sagittae Long-term color variations of the peculiar X-ray binary V Sagittae

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...366..100s&link_type=abstract

Astronomy and Astrophysics, v.366, p.100-105 (2001)

Astronomy and Astrophysics

Astrophysics

5

Stars: Activity, Binaries: General, Circumstellar Matter, Novae, Cataclysmic Variables, Stars: Individual: V Sge

Scientific paper

We present an analysis of the color variations of the X-ray binary V Sge during high, medium and low state of its activity over the years 1995-1997, using UBV data. We resolved the track of V Sge in the color diagrams (B-V and U-B versus mag(V)) during transitions between the states and show that the color variations on the orbital time scale are significantly smaller than the changes caused by the long-term activity. The mean B-V decreases by 0.15 mag during the upper part of the transition (brightness higher than 11.5 mag(V)) from the low to the high state but stays almost constant below this level. On the contrary, U-B does not change significantly during the whole transition. Comparison of our data with those of Herbig et al. (\cite{Herbig}) shows that although the character of the long-term activity in V Sge changed significantly during the last decades (Šimon & Mattei \cite{Simon}) the colors and their variations with the brightness level remained similar. Table~2 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/366/100

Affiliated with

Also associated with

No associations

Rating

Long-term color variations of the peculiar X-ray binary V Sagittae 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 Long-term color variations of the peculiar X-ray binary V Sagittae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term color variations of the peculiar X-ray binary V Sagittae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-920994