Volume 376, Number 3, September IV 2001
|Page(s)||1031 - 1038|
|Section||Interstellar and circumstellar matter|
|Published online||15 September 2001|
BZ Camelopardalis during its 1999/2000 optical low state
Astrophysical Institute Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
2 OAN, Instituto de Astronomía, UNAM, AP 877, 22860 Ensenada, México
3 Osservatorio Astronomico di Torino, Strada Osservatorio 20, 10125 Pino Torinese (TO), Italy
4 Dept. of Astronomy, Univ. Wisconsin, 1150 University Ave., Madison, WI 53706, USA
5 Thüringer Landessternwarte, Sternwarte 5, 07778 Tautenburg, Germany
6 Instituto Nacional de Astrofisica, Optica y Electronica (INAOE), Aptdo. Postal 51 y 216, 72000 Puebla, Pue., Mexico
Corresponding author: J. Greiner, firstname.lastname@example.org
Accepted: 16 July 2001
We report optical observations of the VY Scl star BZ Cam during its previous optical low state in 1999/2000. We find drastic variations in the line profiles. Narrow-band imaging observations show that its nebula extends farther than previously known and seems to be composed of two components. We determine the [ OIII] line intensity of BZ Cam's nebula to erg/cm2/s. We discover a proper motion of BZ Cam of mas/yr which together with the systemic radial velocity yields a space velocity of 125 km s-1. We re-interpret the nebula as being photo-ionized by hypothesized transient, luminous, supersoft X-ray emission during optical low states, and shaped by the transverse motion of BZ Cam.
Key words: X-ray: stars / binaries: close / reflection nebulae / stars: individual: BZ Cam, RX J0513.9-6951, CAL 83
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.