[vsnet-alert 153] BC UMa

[Steve Howell <howell@PSI.EDU>]

The orbital period of BC UMa was first determined in PASP 1990 102 758.
That period was 91.2 +/- 2 min. It will be intertesting to see
if a superhump period agrees with this period. BC UMa is a TOAD
(Howell et al 1995 ApJ 439, 337) with an outburst amplitude of >7 mags,
reaching maximum near 10.9 in V. BC UMa has been observed during a 
superoutburst with IUE (Howell et al ApJ in press). 
It shows strong high velocity wind 
signatures in CIV line. The superoutbusrt observed with IUE was during
April 1994 and lasted for 9 days brighter than V=15.


 Steve B. Howell 
 Planetary Science Institute, Astrophysics Group 
 620 N. 6th Ave. 
 Tucson, AZ 85705  USA 
 Phone (520) 622-6300 
 Fax (520) 622-8060 
 e-mail: howell@frankenstein.psi.edu 
 homepage: http://vsnet.psi.edu/

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp