! Proposal 5994, submission 2 ! PI: David Koo ! Received Wed Mar 15 15:11:44 EST 1995 ! From: rguzman@lick.ucolick.org ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 5994,v 5.1 1995/11/21 19:24:45 pepsa Exp $ ! ! Refer to the HST Phase II Proposal Instructions to fill this out ! ! Anything after a "!" is ignored, and may be deleted ! ! All keywords with multiple entries are comma delimited except the ! Visit_Requirements and Special_Requirements keywords which can be ! delimited with carriage returns or semi-colons, but not commas ! ! For help call your Program Coordinator: Giselle Sleiman ! Phone: 410 338-4753 , E-mail: sleiman@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sun Dec 18 10:25:14 EST 1994 ! Proposal_Information ! Section 4 Title: HST IMAGES OF NEW CANDIDATES FOR DISTANT PROTO-DWARF-ELLIPTICALS Proposal_Category: GO Scientific_Category: Galaxies & Clusters Cycle: 5 Investigators PI_name: David Koo PI_Institution: Lick Observatory, University of California, Santa Cruz CoI_Name: Garth Illingworth CoI_Institution: Lick Observatory, University of California, Santa Cruz Contact: ! Y or N (designate at most one contact) CoI_Name: Sandra Faber CoI_Institution: Lick Observatory, University of California, Santa Cruz Contact: ! Y or N (designate at most one contact) CoI_Name: Rafael Guzman CoI_Institution: Lick Observatory, University of California, Santa Cruz Contact: ! Y or N (designate at most one contact) CoI_Name: Richard Kron CoI_Institution: Yerkes Observatory Contact: ! Y or N (designate at most one contact) CoI_Name: Matthew Bershady CoI_Institution: Department of Astronomy and Astrophysics, Pennsylvania State University Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to obtain WFPC-2 images in F814W and F606W of 10 very compact, very blue galaxies to measure their sizes, light profiles and colors. Such HST data are critical to convert new Keck velocity width data into masses and to decipher the nature of extremely compact galaxies with high luminosities. Though faint (B ~ 20-23) and distant (z ~ 0.1 to 0.7), we have measured their velocity widths on the Keck echelle spectrograph. All but two galaxies lie within one magnitude of L^* and yet they exhibit velocity widths Sigma = 28 - 103 km s^-1. Such small widths compared to those of typical L^* galaxies (Sigma ~200 km s^-1) suggest that some compact galaxies could be 1000 times less massive. Their extreme surface brightnesses, very blue colors, and luminosities can be understood to result from a recent burst of star formation. Without additional prior or subsequent star formation, these galaxies will fade by ~5 mag to dwarf luminosities after a few Gyrs. Thus we are perhaps witnessing, in-situ, the birth of today's low surface brightness dwarf ellipticals like NGC 205 and Fornax. Besides yielding masses as a new dimension for faint galaxy studies, the HST size and color data will provide several critical tests of our interpretation. Questions ! Free format text (please update) Observing_Description: We want to use WFPC2 to image a sample of 10 very faint, very blue, compact galaxies for which Keck echelle data have yielded emission-line velocity profiles. Four of these objects (i.e. sa57 4259/3605 and herc 13925/14358) can be observed in pairs within the same field of view of WFPC2. Each target, whether single or pair, will be allocated one orbit for a total of 8 for this sample. Single objects will be observed with the PC (centered in PC1). The higher spatial resolution is required given the compactness of our targets. However, for objects in pairs the whole field of WFPC2 is needed. In this case, the mid point between the two objects is centered in WFALL. Orientation angles and offsets are specified for each of these observations. For single objects, roll constraints are also given but these are not essential. Each target will be exposed for a total of ~700s and ~900s in the F606W and the F814W filters, respectively. We plan to take two exposures in each filter slightly offset from each other to facilitate the removal of cosmic rays. The F606W filter will provide rest-frame U or B for most of our sample; F814W will provide rest-frame V on average and allow a common filter for photometry. The longer exposure in F814W is to account for the extreme blueness of the galaxies. These exposures are based on our experience with the previous CNELG HST data and MDS Cycle 4 data and should be adequate to extract light profiles and to detect low surface brightness extended structures. Fixed_Targets Target_Number: 1 Target_Name: SA57-4259 Description: GALAXY, DWARF COMPACT Position: RA=13H 5M 34.6S +/- 1S, DEC=29D 29' 44" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.601 Flux: V = 21.8 Comments: (SIGMA=52). GALAXY PAIR WITH D=153"; SECOND OBJECT: SA57-3605, Z = 0.392, V = 22.1, (SIGMA=37). Target_Number: 2 Target_Name: SA57-5482 Description: GALAXY, DWARF COMPACT Position: RA=13H 6M 46.0S +/- 1S, DEC=29D 31' 55" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.453 Flux: V = 21.3 Comments: (SIGMA=60) Target_Number: 3 Target_Name: SA57-10601 Description: GALAXY, DWARF COMPACT Position: RA=13H 6M 25.0S +/- 1S, DEC=29D 39' 39" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.438 Flux: V = 21.3 Comments: (SIGMA=43) Target_Number: 4 Target_Name: SA57-17731 Description: GALAXY, DWARF COMPACT Position: RA=13H 6M 15.5S +/- 1S, DEC=29D 50' 47" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.662 Flux: V = 21.0 Comments: (SIGMA=103) Target_Number: 5 Target_Name: SA57-7042 Description: GALAXY, DWARF COMPACT Position: RA=13H 5M 03.2S +/- 1S, DEC=29D 34' 26" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.525 Flux: V = 22.0 Comments: (SIGMA=116) Target_Number: 6 Target_Name: HERC-13925 Description: GALAXY, DWARF COMPACT Position: RA=17H 17M 50.1S +/- 1S, DEC=50D 06' 43" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.220 Flux: V = 20.0 Comments: (SIGMA=100). GALAXY PAIR WITH D=116"; SECOND OBJECT: HERC-14358, Z = 0.033, B = 22.5, (SIGMA=21). Target_Number: 7 Target_Name: HERC-13088 Description: GALAXY, DWARF COMPACT Position: RA=17H 19M 04.4S +/- 1S, DEC=50D 03' 60" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.436 Flux: V = 20.7 Comments: (SIGMA=45) Target_Number: 8 Target_Name: SA57-1501 Description: GALAXY, DWARF COMPACT Position: RA=13H 5M 43.9S +/- 1S, DEC=29D 24' 59" +/- 1" Equinox: B1950 RV_or_Z: Z = 0.499 Flux: V = 21.7 Comments: (SIGMA=61) ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits Visit_Number: 1 Visit_Requirements: ORIENTation 152D TO 158D Exposure_Number: 1 Target_Name: SA57-4259 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: SA57-4259 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: SA57-4259 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: SA57-4259 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 2 Visit_Requirements: ORIENTation 225D TO 315D Exposure_Number: 1 Target_Name: SA57-5482 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: SA57-5482 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: SA57-5482 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: SA57-5482 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 3 Visit_Requirements: ORIENTation 45D TO 225D Exposure_Number: 1 Target_Name: SA57-1501 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: SA57-1501 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: SA57-1501 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: SA57-1501 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 4 Visit_Requirements: ORIENTation 75D TO 205D Exposure_Number: 1 Target_Name: SA57-17731 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: SA57-17731 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: SA57-17731 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: SA57-17731 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 5 Visit_Requirements: ORIENTation 75D TO 225D Exposure_Number: 1 Target_Name: SA57-7042 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: SA57-7042 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: SA57-7042 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: SA57-7042 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 6 Visit_Requirements: ORIENTation 189D TO 229D Exposure_Number: 1 Target_Name: HERC-13925 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: HERC-13925 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: HERC-13925 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: HERC-13925 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 7 Visit_Requirements: ORIENTation 150D TO 310D Exposure_Number: 1 Target_Name: HERC-13088 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: HERC-13088 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: HERC-13088 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: HERC-13088 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Visit_Number: 8 Visit_Requirements: ORIENTation 150D TO 190D Exposure_Number: 1 Target_Name: SA57-10601 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 2 Target_Name: SA57-10601 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 500S Exposure_Number: 3 Target_Name: SA57-10601 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG 0.5, -0.5 Exposure_Number: 4 Target_Name: SA57-10601 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 300S Special_Requirements: POS TARG 0.5, -0.5 Comments: Data_Distribution ! Defaults indicated; change if desired Medium: 8MM ! 8MM or 6250BPI or 1600BPI Blocking_Factor: 10 ! 10 or 1 ! Only astronomers with very old 9- ! track tape drives should consider ! a blocking factor of 1 Ship_To: PI_Address ! Ship_Via: UPS ! UPS (2-day) or OVERNIGHT ! Overnight shipping done at PI expense Recipient_Email: !koo@lick.ucsc.edu ! Let us know what you think of this template and software! ! Please send a list of your likes and dislikes to your Program Coordinator