9925(  1) - 04/04/03 10:19  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      9925
                                                       Version: 1
                                                       Check-in Date: 04-Apr-2003
                                                                      10:19:21

1.Proposal Title:
Transients in the Ultra-Deep Field
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2. Proposal For  3. Cycle
AR               11
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4. Investigators
                                                                                     Contact?
    PI: Peter Garnavich                   University of Notre Dame
   CoI: Dr. Nicholas Suntzeff             National Optical Astronomy Observatories -    N
                                          CTIO
   CoI: Dr. Brian Schmidt                 Australian National University                N
   CoI: Dr. Adam Riess                    Space Telescope Science Institute             N
   CoI: Prof. Alex Filippenko             University of California - Berkeley           N
   CoI: Mr. Jason Quinn                   University of Notre Dame                      N
   CoI: Dr. Saurabh Jha                   Smithsonian Institution Astrophysical         N
                                          Observatory
   CoI: Mr. Peter Challis                 Smithsonian Institution Astrophysical         N
                                          Observatory
   CoI: Dr. Andy Becker                   University of Washington                      N
   CoI: Dr. Stephen Holland               University of Notre Dame                      N

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5. Abstract

The Ultra-Deep Field will provide a unique opportunity to search for faint
transients on many time-scales. Strongly- lensed supernovae at very high redshift,
flashes from shock- breakout of core-collapse events and possibly orphan gamma-ray
burst afterglows may be detected in time-resolved imaging at ultra-faint magnitudes.
We propose to search for transients of all kinds and to use color, light curve and
host information to determine their origin. We expect to find between 10 and 30
core-collapse supernovae in UDF which will place interesting limits on the prompt
star formation rate at redshifts up to z=4. We estimate the chances of finding one
of the more exotic transients at between 10% and 50%, but the uncertainty is large
and observations are the best way to answer the question.
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                                                9925(  1) - 04/04/03 10:19  - [  2]

            Summary Form for Proposal  9925

  Item                         Used in this proposal
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  Proposal Category            AR
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