1988-1991 PHOTOMETRY OF THE CHROMOSPHERICALLY ACTIVE DOUBLE-LINED BINARY-SYSTEM HD-163621=V835 HERCULIS

Authors
HALL DS HENRY GW
Citation
Ds. Hall et Gw. Henry, 1988-1991 PHOTOMETRY OF THE CHROMOSPHERICALLY ACTIVE DOUBLE-LINED BINARY-SYSTEM HD-163621=V835 HERCULIS, Journal of astrophysics and astronomy, 15(3), 1994, pp. 321-328
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Journal of astrophysics and astronomy → ACNP
ISSN journal
0250-6335
Volume
15
Issue
3
Year of publication
1994
Pages
321 - 328
Database
ISI
SICI code
0250-6335(1994)15:3<321:1POTCA>2.0.ZU;2-G
Abstract
Photometry in V and B with a 16-inch automatic telescope from 1988 to 1991 confirms the synchronous rotation suspected earlier and reveals v ariability up to 0(M).10 in the B bandpass at one epoch. Five spots fo rmed with lifetimes ranging from 0.15 to 0.77 years. As with other rap id rotators, the differential rotation coefficient (k = 0.03) is signi ficantly smaller than that of the Sun (k = 0.19).