! Proposal 6798, submission 1 ! PI: Graeme H. Smith ! Received Fri Feb 16 18:14:24 EST 1996 ! From: graeme@ucolick.org ! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! $Id: 6798,v 4.1 1997/07/30 20:37:19 pepsa Exp $ ! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! $Id: 6798,v 4.1 1997/07/30 20:37:19 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: Manning ! Phone: 410-338-4456 , E-mail: manning@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Name of Phase I Proposal: archive-1047.smith.prop ! Date generated: Fri Dec 22 17:00:05 EST 1995 ! Proposal_Information ! Section 4 Title: The Early Evolution of Local Group Dwarf Irregular Galaxies Proposal_Category: GO Scientific_Category: STELLAR POPULATIONS Cycle: 6 Investigators PI_name: Graeme H. Smith PI_Institution: UCO/Lick Observatory CoI_Name: Carl Grillmair CoI_Institution: Caltech/Jet Propulsion Laboratory Contact: ! Y or N (designate at most one contact) CoI_Name: Jon Holtzman CoI_Institution: New Mexico State University Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) The scientific aim of this proposal is to determine whether gas-containing dwarf irregular galaxies in the Local Group have significant populations of very ancient stars of age comparable to Population II stars in the Galaxy, and if so, whether the properties of these old populations vary with parent galaxy type. A critical diagnostic of a true Population II having both old age (14-16 Gyr) and low metallicity is taken to be the presence of an extended horizontal branch in a color-magnitude diagram. We propose to obtain WFPC2 images in the F555W and F814W bands of two of the nearest Local group dwarf irregulars, WLM and Phoenix, in order to construct color-magnitude diagrams capable of revealing an extended horizontal branch. The CM diagrams will also allow the V-I color distribution of the Population II red giant branch to be determined, from which the mean metallicity and the metallicity dispersion will be derived. Questions ! Free format text (please update) Observing_Description: The sizes of the galaxies are well matched to the field of the WFPC2, so that only one pointing per galaxy is necessary. In order to optimise detection of an old red giant population in the target galaxies, fields will be chosen that are removed from H II regions and young star associations identified from ground-based studies. We will not be targeting observations to study the most recent episodes of star formation in these galaxies. Real_Time_Justification: None. Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: WLM Alternate_Names: DDO 221 Description: GALAXY, AMORPHOUS IRREGULAR, DWARF COMPACT Position: RA=0H 1M 59.3S, ! Most common specification format is DEC=-15D 26' 00", ! RA=0H 0M 0.00S +/- 0S, REGION, R=5" ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: J2000 RV_or_Z: V=-116 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=10.9, B-V=0.44 ! Include at least V and B-V Comments: V and B-V refer to integrated apparent magnitude and color. Target_Number: 2 Target_Name: PHOENIX Alternate_Names: Description: GALAXY, DWARF COMPACT, DWARF SPHEROIDAL Position: RA= 1H 51M 06.3S, ! Most common specification format is DEC=-44D 26' 40.9", ! RA=0H 0M 0.00S +/- 0S, REGION, R=5" ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: J2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=13.2 ! Include at least V and B-V Comments: V refers to integrated apparent magnitude. Solar_System_Targets ! Section 5.2 Generic_Targets ! Section 5.3 Scan_Data ! Appendix B ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits ! Section 6 Visit_Number: 01 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 10 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: ! Section 7.2 Exposure_Number: 11 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 10 ! Section 7.2 NO SPLIT Exposure_Number: 12 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1000.0S Special_Requirements: SAME POS AS 10 ! Section 7.2 NO SPLIT Exposure_Number: 20 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: SAME POS AS 10 NO SPLIT Exposure_Number: 21 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 10 NO SPLIT Exposure_Number: 22 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100.0S Special_Requirements: SAME POS AS 10 NO SPLIT Exposure_Number: 30 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: POS TARG 0.25,0.25 NO SPLIT Exposure_Number: 31 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 30 NO SPLIT Exposure_Number: 32 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1000.0S Special_Requirements: SAME POS AS 30 NO SPLIT Exposure_Number: 40 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: SAME POS AS 30 NO SPLIT Exposure_Number: 41 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 30 NO SPLIT Exposure_Number: 42 ! Section 6.5 Target_Name: WLM Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100.0S Special_Requirements: SAME POS AS 30 NO SPLIT Visit_Number: 02 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 110 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: ! Section 7.2 Exposure_Number: 111 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 110 ! Section 7.2 NO SPLIT Exposure_Number: 112 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1000.0S Special_Requirements: SAME POS AS 110 ! Section 7.2 NO SPLIT Exposure_Number: 120 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: SAME POS AS 110 NO SPLIT Exposure_Number: 121 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 110 NO SPLIT Exposure_Number: 122 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100.0S Special_Requirements: SAME POS AS 110 NO SPLIT Exposure_Number: 130 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: POS TARG 0.25,0.25 NO SPLIT Exposure_Number: 131 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 130 NO SPLIT Exposure_Number: 132 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1000.0S Special_Requirements: SAME POS AS 130 NO SPLIT Exposure_Number: 140 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_Iterations: 1 Time_Per_Exposure: 100.0S Special_Requirements: SAME POS AS 130 NO SPLIT Exposure_Number: 141 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1300.0S Special_Requirements: SAME POS AS 130 NO SPLIT Exposure_Number: 142 ! Section 6.5 Target_Name: PHOENIX Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Wavelength: Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100.0S Special_Requirements: SAME POS AS 130 NO SPLIT Data_Distribution ! Defaults indicated; change if desired Medium: 8MM ! 8MM or 6250BPI or 1600BPI Blocking_Factor: 10 ! 10 or 1 ! 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