Photoelectric Photometry Newsletter

The W Boo Project

Attached to this newsletter is a preprint of a paper which has just been submitted to the IAU Information Bulletin on Variable Stars, which is published on behalf of IAU Commission 27 by astronomers at the Konkoly Observatory in Hungary. W Boo is a small-amplitude red variable on the AAVSO photoelectric photometry program. It appeared to switch period in about 1990, from 25 to 50 days, and this was interpreted as a change in pulsation mode. Unfortunately, several comparison stars showed some evidence for variability, so five of you "bore down" on W Boo last year. The preprint reports on the results. The 1996 light curve of W Boo is very interesting. It seems to be a superposition of two periods: 25 and 33 days. These, along with the 50-day period, may represent adjacent radial pulsation modes.

By the way, IAU Commission 27 (Variable Stars), and the IAU IBVS, can be found on the WWW at: http://www.konkoly.hu:80/IAUC27/