Abstract
We report optical observations of the VY Scl star BZ Cam during its previous optical low state in 1999/2000. We nd drastic variations in the line proles. Narrow-band imaging observations show that its nebula extends farther than previously known and seems to be composed of two components. We determine the (O III) line intensity of BZ Cam's nebula to 4:8 10 13 erg/cm 2 /s. We discover a proper motion of BZ Cam of 25 2 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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
