9210(  1) - 12/20/00 23:43  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      9210
                                                       Version: 1
                                                       Check-in Date: 20-Dec-2000
                                                                      23:37:04

1.Proposal Title:
Using the HST Archive to Study the Optical Counterparts of Chandra X-ray Point
Sources
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2. Proposal For  3. Cycle
AR               10
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4. Investigators
                                                                                     Contact?
    PI: Eliot Malumuth                    Raytheon ITSS/Goddard Space Flight Center
   CoI: Dr. Richard Mushotzky             Goddard Space Flight Center                   N
   CoI: Dr. Kimberly Weaver               Goddard Space Flight Center                   N
   CoI: Dr. Michael Loewenstein           Goddard Space Flight Center                   N
   CoI: Dr. Timothy Heckman               The Johns Hopkins University                  N

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5. Abstract

Since it's deployment, the Chandra X-ray Observatory has been returning X-ray images
of unparalleled resolution. Chandra observations of nearby galaxies show large
numbers of point- like X-ray sources. Most likely, these are X-ray binary stars.
However, the true nature of these objects is unknown because there are no optical
identifications. We will use the HST archive to retrieve, process and analyze all
images in the fields of several Chandra X-ray images of nearby galaxies. There are
over 300 images which may be of use. We have retrieved the data from one position in
NGC 1399 to use as a test case. These data show that we will be able to find and
study the optical counterparts of many of the hundreds of X- ray point sources in
our images. We are also submitting companion snapshot proposals to cover X-ray
objects not included in the archival data.
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                                                9210(  1) - 12/20/00 23:43  - [  2]

            Summary Form for Proposal  9210

  Item                         Used in this proposal
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  Proposal Category            AR
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