10689(  1) - 04/05/05 12:39  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      10689
                                                       Version: 1
                                                       Check-in Date: 05-Apr-2005
                                                                      16:39:37

1.Proposal Title:
Host Galaxy Morphologies and SEDs of High Luminosity AGN
------------------------------------------------------------------------------------
2. Proposal For  3. Cycle  4. Parallel Pointing Tolerance
AR               14        <none>
------------------------------------------------------------------------------------
5. Investigators
                                                                                     Contact?
    PI: Dr. Claudia Megan Urry            Yale University
   CoI: Ms. Brooke Devlin Simmons         Yale University                               N
   CoI: Mr. Jeffrey Van Duyne             Yale University                               N
   CoI: Mr. Shanil N. Virani              Yale University                               N
   CoI: Dr. Pieter van Dokkum             Yale University                               N

------------------------------------------------------------------------------------
6. Abstract

We propose to study the morphologies and environments of 482 X-ray selected AGN host
galaxies and a comparison sample of thousands of normal galaxies in the GEMS field,
also known as the Extended Chandra Deep Field South (ECDFS), a 30' x 30' field
centered on the much smaller GOODS field. The AGN are selected from a recent deep
Chandra survey of the ECDFS. The combination of HST, Chandra, Spitzer, and multi-
band ground-based data in this field is unique apart from GOODS, and because the
ECDFS is larger and shallower, it samples luminous quasars rather than the lower
luminosity AGN found in GOODS. The HST data are critical for determining the AGN
host morphologies, host galaxy evolution, and obscuration, up to z~1. We will
compare the results for luminous quasars in the GEMS area to those obtained for low-
luminosity AGN in the GOODS area, using identical measurement techniques. This
study, combined with our ongoing work in the GOODS area, will determine whether AGN
hosts are identical to normal galaxies or are significantly influenced by the
nuclear activity.
------------------------------------------------------------------------------------
                                                10689(  1) - 04/05/05 12:39  - [  2]

            Summary Form for Proposal  10689

  Item                         Used in this proposal
------------------------------------------------------------------------------------------------------------------------------------
  Proposal Category            AR
------------------------------------------------------------------------------------------------------------------------------------