SUMMARY OF SEQUENCE NUMBER 300037
SUMMARY OF SEQUENCE NUMBER 300037
Title: BZ CAM - A TRANSIENT SUPERSOFT X-RAY SOURCE?
Observer: GREINER
Subject Category: WD Binaries and CVs
Seq: 300037 ObsId: 00327
Long-term Plan bin: no LTS bin
ABSTRACT
BZ Cam is a binary with a 221 min. period. It contains an accreting white dwarf and a 0.3-0.4 solar mass main-sequence donor. BZ Cam belongs to the group of variables called VY Scl stars. Most of the time it spends at V=12.7 mag, but during low states it has V=14.3 mag. BZ Cam is surrounded by a faint emission nebula (AA 181, 373). Photoionization by a canonical cataclysmic variable cannot account for the nebular excitation (emission line ratios). The proposed ACIS-S observation will test the hypothesis that BZ Cam, like V751 Cyg (A&A 343, 183) and the canonical supersoft source (SSS) RX J0513.9-6951, emits luminous supersoft X-rays during its optical low-state. If supersoft X-rays could be detected, it would have 2 major implications: (1) Discovery of new object class: VY Scl stars = tra
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| Mispointing |
97.391667 | 72.077111 |
5.000000 |
ACIS-S |
NONE |
DDT |
no |
no |
no |
no |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
