SUMMARY OF SEQUENCE NUMBER 400081
SUMMARY OF SEQUENCE NUMBER 400081
Title: THE LOCATION OF THE MOST INTENSE UNIDENTIFIED X-RAY SOURCE ON THE CELESTIAL SPHERE
Observer: ANDERSON
Subject Category: BH and NS Binaries
Seq: 400081 ObsId: 00714
Long-term Plan bin: 7-Mar-2000
ABSTRACT
We propose to use the unprecedented X-ray spatial resolution and aspect determination accuracy of AXAF to obtain the optical/IR identification of what may be the most intense but as yet unidentified steady X-ray source on the celestial sphere, GX17+2 (=X1813-140). Although this object is a prototype of the important Z-sources (which include Sco X-1 and Cyg X-2), evidence is now very strong that the long-accepted optical identification is incorrect. We have recently obtained HST NICMOS observations of the field which point the way towards reopening this perplexing problem of 25 years duration. The proposed observations will simultaneously provide a high-quality X-ray spectrum.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| GX 17+2 |
274.005000 | -14.036444 |
9.000000 |
HRC-S |
LETG |
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
