10294( 1) - 04/02/04 11:14 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10294 Version: 1 Check-in Date: 02-Apr-2004 11:14:03 1.Proposal Title: The SN 1987A/LMC Deep Field ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle 4. Parallel Pointing Tolerance AR 13 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Dr. Stephen S. Lawrence Hofstra University CoI: Dr. Ben E. sugerman Space Telescope Science Institute N CoI: Dr. Arlin Crotts Columbia University in the City of New N York ------------------------------------------------------------------------------------ 6. Abstract We propose to astrometrically register and co-add the complete archive of WFPC2 PC- chip imaging centered on SN 1987A, creating a "SN 1987A Deep Field." These data span 16 epochs between 1994 Feb and 2002 May in six broad-, one medium- and three narrow- band filters with total exposure times ranging from 1.3--11.4 hours. This dataset will be used to: 1) map out the faintest line-emitting structures in the photoionized bipolar circumstellar nebula surrounding SN 1987A, 2) generate fading lightcurves and [OIII]/(H-alpha+[NII]) line emission maps of the various component substructures of this nebula, 3) establish a highly-accurate astrometric grid of stars within 20 arcseconds of SN 1987A, 4) generate very deep (m~25.5--26.5) broad- band photometry of these same LMC field stars, and 5) identify any variable stellar sources in the field. Additionally, we would seek to register and stack the surrounding WF chip images, extending the stellar and ISM field out to 2 arcminute radius. Once we have accomplished our goals we will make these images publically available. Further science that would be available from these publicly-released deep field images includes: 1) a deep map of LMC interstellar line emission unrelated to SN 1987A, which can be correlated with other imaging and spectroscopic datasets, 2) a small, but deeper, set of stellar photometry than currently exists in this field from which stellar population, IMF and extinction studies can be done, and 3) a sample of variable stars and other stellar types potentially useful as distance estimators. ------------------------------------------------------------------------------------ 10294( 1) - 04/02/04 11:14 - [ 2] Summary Form for Proposal 10294 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category AR ------------------------------------------------------------------------------------------------------------------------------------