SUMMARY OF SEQUENCE NUMBER 370469
SUMMARY OF SEQUENCE NUMBER 370469
Title: X-RAY CONSTRAINTS ON THE BINARY STAR POPULATIONS IN OMEGA CENTAURI
Observer: Cool
Subject Category: WD Binaries and CVs
Seq: 370469 ObsId: 01519
Long-term Plan bin: no LTS bin
ABSTRACT
We propose to obtain a 70 ksec ACIS observation of the globular cluster Omega Cen. A high rate of stellar interactions and large core make Omega Cen a prime target for the study of low-luminosity cluster X-ray sources. We will (1) measure the luminosity function and radial distribution of cataclysmic variables down to Lx = 2e30 erg/s; (2) determine the frequency of RS CVn X-ray binaries in a globular cluster for the first time; (3) provide the accurate positions needed for identifying optical counterparts in crowded fields; and (4) enable detailed comparisons between clusters with different dynamical properties. An order of magnitude more sensitive than previous work, this study will provide new constraints on primordial and capture binaries that are vital to cluster dynamical evolution.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| NGC 5139 |
201.691250 | -47.476944 |
45.00000 |
ACIS-I |
NONE |
GO |
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
