! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! $Id: 6534,v 10.1 1996/04/01 00:24:39 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: Karla Peterson ! Phone: 410-338-4774 , E-mail: peterson@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. Proposal_Information ! Section 4 Title: Be-deficient Halo Stars: Implications for Galactic Chemical Evolution and Cosmology Proposal_Category: GO Scientific_Category: COOL STARS Cycle: 6 Investigators PI_name: Douglas Duncan PI_Institution: University of Chicago, Dept. of Astronomy and Astrophysics CoI_Name: Francesca Primas CoI_Institution: University of Chicago, Dept. of Astronomy and Astrophysics Contact: ! Y or N (designate at most one contact) CoI_Name: Julie Thorburn CoI_Institution: Yerkes Observatory Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to to investigate the origin and stellar destruction of the light elements Li, Be, and B by observing B abundances in a unique population of halo stars which lack Be. Li is produced in the Big Bang and its abundance in halo stars constrains primordial nucleosynthesis and the baryonic density. Be and B (and more Li) should be produced later by cosmic ray spallation as the galactic halo forms, and the evolution of Li, Be, and B is now being used along with that of Fe/H and O/H as a powerful discriminant between different models of the chemical and dynamical evolution of the galaxy. Light element abundances can be used to test the theories mentioned above only if they have not been altered by destruction in the stars, and a number of respected theorists have presented models which predict some destruction. We have found 6 halo stars in which Be is missing or very weak. Five of these also have undetectable Li, but in one, Li is normal. Observing B in these stars should allow us to decide if is this is clear evidence of stellar destruction. The case of the Li-normal, Be-weak star is especially interesting, since this cannot be due to known destruction mechanisms. They all destroy more Be and B than Li (which burns at a lower temperature). If B in that star is shown to have the same deficiency as Be, it would be evidence of spatial variation of element production in the early galaxy. Questions ! Free format text (please update) Observing_Description: All observations will be made with the G270M grating of GHRS, similar to our past B observations. The computation of orbits and exposure times has been scaled from the star HD76932, which we have studied in this particular spectral region, because of the similarity of its physical characteristics with the other target stars. 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:HD3795 Alternate_Names:GSC6421-824 Description:STAR,K V-IV Position:RA=00H 40M 32.85S +/- 1S, DEC=-23D 48' 17.2" +/- 1" ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:0.0459 ! Units are seconds of time per year Dec_PM:-0.357 ! Units are seconds of arc per year Epoch:2000 Annual_Parallax: Flux:V=6.09, B-V=0.70 ! Include at least V and B-V Comments: Target_Number:2 Target_Name:HD106516 Alternate_Names:GSC5522-1684 Description:STAR,F3-F9 Position:RA=12H 15M 10.53S +/- 1S, DEC=-10D 18' 45.3" +/- 1" ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:0.0021 ! Units are seconds of time per year Dec_PM:-1.018 ! Units are seconds of arc per year Epoch:2000 Annual_Parallax: Flux:V=6.09, B-V=0.45 ! Include at least V and B-V Comments: Target_Number:3 Target_Name:HD221377 Alternate_Names:GSC3649-990 Description:STAR,F3-F9 Position:RA=23H 31M 19.76S +/- 1S, DEC=+52D 24' 38.66" +/- 1" ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:0.011 ! Units are seconds of time per year Dec_PM:-0.025 ! Units are seconds of arc per year Epoch:2000 Annual_Parallax: Flux:V=7.20, B-V=0.39 ! Include at least V and B-V Comments: Target_Number:4 Target_Name:HD160617 Alternate_Names:GSC7889-2671 Description:STAR,F3-F9 Position:RA=17H 42M 49.34S +/- 1S, DEC=-40D 19' 16.1" +/- 1" !Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:-0.0060 ! Units are seconds of time per year Dec_PM:-0.403 ! Units are seconds of arc per year Epoch:2000 Annual_Parallax: Flux:V=8.68,B-V=0.46 ! Include at least V and B-V Comments:request pending to substitute this target for #4 (HD6755) Target_Number:5 Target_Name:HD2665 Alternate_Names:GSC3362-1006 Description:STAR,G V-IV Position:RA=00H 30M 45.34S +/- 1S, DEC=+57D 03' 55.3" +/- 1", PLATE-ID=01W2 ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:0.0051 ! Units are seconds of time per year Dec_PM:-0.064 ! Units are seconds of arc per year Epoch:1983.852 Annual_Parallax: Flux:V=7.53, B-V=0.80 ! Include at least V and B-V Comments: Target_Number:6 Target_Name:HD194598 Alternate_Names:GSC1091-1563 Description:STAR,F3-F9 Position:RA=20H 26M 11.75S +/- 1S, DEC=+09D 27' 10.4" +/- 1", PLATE-ID=03RE ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:0.0083 ! Units are seconds of time per year Dec_PM:-0.549 ! Units are seconds of arc per year Epoch:1982.480 Annual_Parallax: Flux:V=8.43, B-V=0.49 ! Include at least V and B-V Comments: Target_Number:7 Target_Name:HD94028 Alternate_Names:GSC1435-86 Description:STAR,F3-F9 Position:RA=10H 51M 28.37S +/- 1S, DEC=+20D 16' 46.6" +/- 1", PLATE-ID=0256 ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:J2000 RV_or_Z: RA_PM:-0.0188 ! Units are seconds of time per year Dec_PM:-0.453 ! Units are seconds of arc per year Epoch:1983.037 Annual_Parallax: Flux:V=7.88, B-V=0.47 ! Include at least V and B-V Comments: Visits ! Section 6 Visit_Number:1 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD3795 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=3 Number_of_Iterations:1 Time_Per_Exposure:1.8S Special_Requirements:ONBOARD ACQ FOR 2 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD3795 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1795.2S Special_Requirements: ! Section 7.2 Visit_Number:2 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD106516 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=3 Number_of_Iterations:1 Time_Per_Exposure:1.8S Special_Requirements:ONBOARD ACQ FOR 2 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD106516 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1795.2S Special_Requirements: ! Section 7.2 Visit_Number:3 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD221377 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=3 Number_of_Iterations:1 Time_Per_Exposure:1.8S Special_Requirements:ONBOARD ACQ FOR 2 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD221377 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:3 Time_Per_Exposure:1632S Special_Requirements: ! Section 7.2 Visit_Number:4 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD160617 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=3 Number_of_Iterations:1 Time_Per_Exposure:1.8S Special_Requirements:ONBOARD ACQ FOR 2-3 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD160617 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:2 Time_Per_Exposure:1523.2S Special_Requirements: ! Section 7.2 Exposure_Number:3 ! Section 6.5 Target_Name:HD160617 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:3 Time_Per_Exposure:1523.2S Special_Requirements: ! Section 7.2 Visit_Number:5 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD2665 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=3 Number_of_Iterations:1 Time_Per_Exposure:1.8S Special_Requirements:ONBOARD ACQ FOR 2 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD2665 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:3 Time_Per_Exposure:1632S Special_Requirements: ! Section 7.2 Visit_Number:6 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD194598 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=5 Number_of_Iterations:1 Time_Per_Exposure:5S Special_Requirements:ONBOARD ACQ FOR 2-3 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD194598 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:2 Time_Per_Exposure:1305.6S Special_Requirements: ! Section 7.2 Exposure_Number:3 ! Section 6.5 Target_Name:HD194598 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:3 Time_Per_Exposure:1414.4S Special_Requirements: ! Section 7.2 Visit_Number:7 Visit_Requirements: ! Section 7.1 Exposure_Number:1 ! Section 6.5 Target_Name:HD94028 Config:HRS Opmode:ACQ Aperture:2.0 Sp_Element:MIRROR-N2 Wavelength: Optional_Parameters:SEARCH-SIZE=5 Number_of_Iterations:1 Time_Per_Exposure:5S Special_Requirements:ONBOARD ACQ FOR 2-3 ! Section 7.2 Exposure_Number:2 ! Section 6.5 Target_Name:HD94028 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:3 Time_Per_Exposure:1305.6S Special_Requirements: ! Section 7.2 Exposure_Number:3 ! Section 6.5 Target_Name:HD94028 Config:HRS Opmode:ACCUM Aperture:2.0 Sp_Element:G270M Wavelength:2498 Optional_Parameters:FP-SPLIT=STD Number_of_Iterations:4 Time_Per_Exposure:1414.4S Special_Requirements: ! Section 7.2 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 ! STSCI or PI_Address or ! PI Address from Phase I is: ! ! 5640 South Ellis Avenue ! Chicago ! 60637 ! ! Ship_Via: UPS ! UPS (2-day) or OVERNIGHT ! Overnight shipping done at PI expense Recipient_Email: ! Needed if Ship_To: is not PI_Address ! ! Let us know what you think of this template and software! ! Please send a list of your likes and dislikes to your Program Coordinator