SUMMARY OF SEQUENCE NUMBER 200054
SUMMARY OF SEQUENCE NUMBER 200054
Title: X-RAY EMISSION FROM WOLF-RAYET STARS: THE COLLIDING WIND SHOCK SYSTEM GAMMA VELORUM
Observer: SKINNER
Subject Category: Normal Stars and WD
Seq: 200054 ObsId: 00629
Long-term Plan bin: 15-Mar-2000
ABSTRACT
The powerful winds of Wolf-Rayet (WR) stars generate strong X-rays via shock processes and also serve as an important source of chemical enrichment of the interstellar medium. We propose to obtain a high resolution X-ray spectrum of the colliding wind shock binary system Gamma Velorum (WC8 + O8), containing the closest WR star known. The spectrum will be rich in emission lines, providing information on mass loss parameters and shock geometry as well as metal abundances that can be used to test evolutionary models of massive stars.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| HD 68273 |
122.383333 | -47.336694 |
65.00000 |
ACIS-S |
HETG |
GO |
yes |
no |
no |
yes |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
