! Proposal 5908, submission 1 ! PI: Neal Jackson ! Received Fri Mar 10 06:34:40 EST 1995 ! From: pi21@stsci.edu ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 5908,v 2.1 1995/03/10 19:03:16 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: Marc Bremmer ! Phone: 410 338-4458 , E-mail: bremmer@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sat Dec 17 10:05:23 EST 1994 ! Proposal_Information ! Section 4 Title: HST observations of new CLASS gravitational lenses Proposal_Category: GO Scientific_Category: Quasars Cycle: 5 Investigators PI_name: Neal Jackson PI_Institution: NRAL Jodrell Bank CoI_Name: Ian Browne CoI_Institution: NRAL Jodrell Bank Contact: N ! Y or N (designate at most one contact) CoI_Name: Peter Wilkinson CoI_Institution: NRAL Jodrell Bank Contact: N ! Y or N (designate at most one contact) CoI_Name: Sunita Nair CoI_Institution: NRAL Jodrell Bank Contact: N ! Y or N (designate at most one contact) CoI_Name: Steve Myers CoI_Institution: Caltech Contact: N ! Y or N (designate at most one contact) CoI_Name: Tony Readhead CoI_Institution: Caltech Contact: N ! Y or N (designate at most one contact) CoI_Name: Tim Pearson CoI_Institution: Caltech Contact: N ! Y or N (designate at most one contact) CoI_Name: Roger Blandford CoI_Institution: Caltech Contact: N ! Y or N (designate at most one contact) CoI_Name: Chris Fassnacht CoI_Institution: Caltech Contact: N ! Y or N (designate at most one contact) CoI_Name: George Miley CoI_Institution: Leiden Observatory Contact: N ! Y or N (designate at most one contact) CoI_Name: Ger de Bruyn CoI_Institution: Dwingeloo Contact: N ! Y or N (designate at most one contact) CoI_Name: Richard Schilizzi CoI_Institution: Dwingeloo Contact: N ! Y or N (designate at most one contact) CoI_Name: Malcolm Bremer CoI_Institution: Leiden Observatory Contact: N ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to examine a few of the very best lens candidates from a new gravitational lens survey, the Cosmic Lens All-Sky Survey (CLASS) made with the VLA. We are virtually certain that we have one new lens system (1600+434) and another (1609+655) has a radio configuration which almost invariably indicates gravitational lensing. The other cases are systems which have a high probability of being lenses (statistically we would expect at least 5 of the 10 objects should be lensed, since we have imaged >3000 radio sources and experience shows that 1 in 500 are lensed). All have separations which make them difficult to study from the ground and therefore uniquely suited to the capabilities of the HST. In this investigation we will study 1600+434 and 1609+655 and attempt to image the lensing galaxy. We will image the remainder in an attempt to confirm their lens status (which requires 0.1" resolution imaging typically) and search for lensing galaxies and/or clusters in those found to be lensed systems. Questions ! Free format text (please update) Observing_Description: The observations are aimed at detecting point objects of magnitude 20 together with extended galaxies of integrated magnitudes down to about 20 to 21. In the 555 filter the point object will produce about 55 electrons per second. An extended galaxy of similar brightness will produce about 2 electrons per second in the central pixel assuming a redshift of about 0.6 and using the curve of figure 6.1. in the WFPC2 handbook. The figures for the 814 filter are roughly similar. We propose to take two exposures in each filter: one short (so as not to saturate on the point sources) and one long in order to search for any lensing galaxy. The available observing time per orbit is between 43 and 47 minutes, taking into account occultation and guide star acquisition. Allowing 16 minutes for exposure overheads (one CR-SPLIT and one NO-CR -SPLIT in each filter) this gives between 27 and 31 minutes for science exposures. In the deeper exposure in each filter we will therefore obtain about 12-15 minutes' integration. This will be enough to collect 1400 electrons in the central pixel of any lensing galaxy. The point sources will be easily detected in the short (~1 min) exposures (note that objects listed as magnitude >20 will almost certainly be <21.5 as they are flat spectrum radio sources). Real_Time_Justification: We are conducting imaging and spectroscopic observations with the Keck telescope for optical ground based followup of the lens candidates, and the wide--separation lens in figure 1 which was confirmed using the William Herschel Telescope on La Palma. These ground based telescopes are not adequate for the investigation suggested here for the reasons presented above. MERLIN and VLBA will be used for radio followup of suspected lenses. Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number:1 Target_Name:QSO-160140+431647 Alternate_Names: Description:GALAXY Position:RA=16H 1M 40.46S +/- 0.01S, ! Most common is DEC=43D 16' 47.5" +/- 0.1" ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:2000 RV_or_Z:Z=1.6 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux:V=20.0 +/- 0.5 ! Include at least V and B-V Comments: Target_Number:2 Target_Name:QSO-160913+653228 Alternate_Names: Description:GALAXY Position:RA=16H 9M 13.96S +/- 0.01S, ! Most common is DEC=65D 32' 28.9" +/- 0.1" ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:2000 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=18.9 +/- 0.5 ! Include at least V and B-V Comments: Target_Number:3 Target_Name:QSO-193430+502523 Alternate_Names: Description:GALAXY Position:RA=19H 34M 30.90S +/- 0.01S, ! Most common is DEC=50D 25' 23.2" +/- 0.1" ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:2000 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=21.0 +/- 1.0 ! Include at least V and B-V Comments: Target_Number:4 Target_Name:QSO-071603+470850 Alternate_Names: Description:GALAXY Position:RA=07H 16M 3.53S +/- 0.01S, ! Most common is DEC=47D 08' 50.1" +/- 0.1" ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:2000 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=20.0 +/- 0.5 ! Include at least V and B-V Comments: ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits ! Section 6 Visit_Number: 1 Visit_Requirements: ! Section 7.1 ! Uncomment or copy visit level special requirements needed ! Most of these requirements (including ORIENT) will limit scheduling On_Hold_Comments: Visit_Comments: Exposure_Number:11 ! Section 6.5 Target_Name:QSO-160140+431647 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:2S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:12 ! Section 6.5 Target_Name:QSO-160140+431647 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:900S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:13 ! Section 6.5 Target_Name:QSO-160140+431647 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F814W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1000S Special_Requirements: ! Section 7.2 Comments: Visits ! Section 6 Visit_Number: 2 Visit_Requirements:CVZ ! Section 7.1 ! Uncomment or copy visit level special requirements needed ! Most of these requirements (including ORIENT) will limit scheduling On_Hold_Comments: Visit_Comments: Exposure_Number:21 ! Section 6.5 Target_Name:QSO-160913+653228 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:2S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:22 ! Section 6.5 Target_Name:QSO-160913+653228 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters:CR-SPLIT=NO Number_of_Iterations:3 Time_Per_Exposure:500S Special_Requirements: Comments: Exposure_Number:23 ! Section 6.5 Target_Name:QSO-160913+653228 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F814W Wavelength: Optional_Parameters:CR-SPLIT=NO Number_of_Iterations:3 Time_Per_Exposure:800S Special_Requirements: Comments: Visits ! Section 6 Visit_Number: 3 Visit_Requirements: ! Section 7.1 ! Uncomment or copy visit level special requirements needed ! Most of these requirements (including ORIENT) will limit scheduling On_Hold_Comments:On hold awaiting Merlin data Visit_Comments:On hold awaiting Merlin data Exposure_Number:31 ! Section 6.5 Target_Name:QSO-193430+502523 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:2S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:32 ! Section 6.5 Target_Name:QSO-193430+502523 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:900S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:33 ! Section 6.5 Target_Name:QSO-193430+502523 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F814W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1100S Special_Requirements: ! Section 7.2 Comments: Visits ! Section 6 Visit_Number: 4 Visit_Requirements: ! Section 7.1 On_Hold_Comments:On hold awaiting Merlin data Visit_Comments:On hold awaiting Merlin data Exposure_Number:41 ! Section 6.5 Target_Name:QSO-071603+470850 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:2S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:42 ! Section 6.5 Target_Name:QSO-071603+470850 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F555W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:900S Special_Requirements: ! Section 7.2 Comments: Exposure_Number:43 ! Section 6.5 Target_Name:QSO-071603+470850 Config:WFPC2 Opmode:IMAGE Aperture:PC1 Sp_Element:F814W Wavelength: Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1000S Special_Requirements: ! Section 7.2 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 ! STSCI or PI_Address or ! PI Address from Phase I is: ! ! Lower Withington,Macclesfield, ! Cheshire SK11 9DL,England ! ! 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