! Proposal 5963, submission 1 ! PI: John Bally ! Received Fri Mar 24 20:37:29 EST 1995 ! From: bally@casa.Colorado.EDU ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 5963,v 12.1 1995/11/22 18:05:50 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: Doug Van Orsow ! Phone: 410 338-4568 , E-mail: vanorsow@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sun Dec 18 09:39:42 EST 1994 ! Proposal_Information ! Section 4 Title: Search for Externally Illuminated Proto- Planetary Systems in S106 and NGC281 Proposal_Category: GO Scientific_Category: Interstellar Medium Cycle: 5 Investigators PI_name: John Bally PI_Institution: Center for Astrophysics and Space Astronomy, University of Colorado CoI_Name: Ralph Sutherland CoI_Institution: Joint Institute for Laboratory Astrophysics, University of Colorado Contact: ! Y or N (designate at most one contact) CoI_Name: John Rayner CoI_Institution: Institute for Astronomy, University of Hawaii Contact: ! Y or N (designate at most one contact) CoI_Name: Hans Zinnecker CoI_Institution: Astronomy Institute, Wuerzburg University Contact: ! Y or N (designate at most one contact) CoI_Name: David Devine CoI_Institution: Center for Astrophysics and Space Astronomy, University of Colorado Contact: John Bally Center for Astrophysics and Space Astronomy, University of Colorado ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) Our primary goal is to search for externally illuminated protostellar and protoplanetary environments (``proplyds'') embedded in the H II region S106 using WFPC2. Our search will attempt to constrain the photo-evaporation time-scale for proplyds by determining the frequency of occurrence as a function of the photoionization age of the host HII region which for S106 is about 10^4 years and for M42 (the only HII region in which proplyds have been found so far) is about 10^5 years. Our observations will constrain the frequency of occurrence of proto-planetary environments amongst young stellar objects born in transient (gravitationally unbound) cluster environments where most field stars are believed to be born. S106 is so young that its structure may provide information about the bipolar outflow phase that preceded the birth of the HII region. HST will help distinguish stars from nebulosity and resulting photometry and colors will be combined with near -IR data to fit stars on the HR diagram. Questions ! Free format text (please update) Observing_Description: We will search for proplyds in the 6563 Angstrom\ Halpha filter (F656N). Using ground based data for the mean flux from the nebula, we estimate that exposure times totaling 700 to 2100 seconds will be required to obtain sufficient S/N. We will attempt to use use partial pixel substepping and the Lucy-Hook coaddition code (ST-ECF Newsletter, Feb 1995, #22, 16.) to improve the spatial resolution of the WFPCII images. Therefore, we will obatin two high S/N images at each of three pointings needed to cover S106. We estimate that each pointing will use one full orbit when the substepped exposures are included. We will also obtain continuum images in the F547M filter that can be used to distinguish refelcted light from nebula emission. We have obtained extensive ground based supporting data for this program. Near-IR S106 images were obtained by John Rayner with the CFHT (hi-res) and the UH 88-inch (low-res, wide-field). John Rayner has obtained thermal images with the IRTF in October. The K - L infrared color index is an indication of circumstellar matter, possibly in the form of a disk. Plans are underway to use these instruments for hi-res follow-up IR imaging when tip-tilt adaptive optics become available at the IRTF. J. Bally and D. Devine have obtained extensive narrow band visual images from the ground of S106. J. Bally has obtained aperture synthesis radio maps of S106 with the VLA. Real_Time_Justification: Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: S106N Description: ISM, HII Region Position: RA=20H 25M 34.30S +/-.1S, ! RA=0H 0M 0.00S +/- 0S, DEC=37D 13' 04.0" +/-1" Equinox: 1950 Flux: SURF-LINE(6563)=5.0 E-13 ! Include at least V and B-V Target_Number: 2 Target_Name: S106S Description: ISM, HII Region Position: RA=20H 25M 33.30S +/-.1S, DEC=37D 12' 36.0" +/-1" Equinox: 1950 Flux: SURF-LINE(6563)=5.0 E-13 ! Include at least V and B-V Target_Number: 3 Target_Name: S106N2 Description: ISM, HII Region Position: RA=20H 25M 35.30S +/-.1S, DEC=37D 13' 32.0" +/-1" Equinox: 1950 Flux: SURF-LINE(6563)=5.0 E-13 ! Include at least V and B-V ! 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: ORIENT 20D TO 30D Comments: U3PA=25D+/-5 Exposure_Number: 1 ! Section 6.5 Target_Name: S106N Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F656N Number_of_Iterations: 2 Time_Per_Exposure: 300S Comments: H-ALPHA LINE Exposure_Number: 2 ! Section 6.5 Target_Name: S106N Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F656N Number_of_Iterations: 2 Time_Per_Exposure: 300S Special_Requirements: POS TARG +1.05, +1.05 Exposure_Number: 3 ! Section 6.5 Target_Name: S106N Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F547M Number_of_Iterations: 1 Time_Per_Exposure: 100S Comments: CONTINUUM Visits ! Section 6 Visit_Number: 2 Visit_Requirements: ORIENT 200D TO 210D Comments: U3PA=205D+/-5 Exposure_Number: 4 ! Section 6.5 Target_Name: S106S Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F656N Number_of_Iterations: 2 Time_Per_Exposure: 300S Exposure_Number: 5 ! Section 6.5 Target_Name: S106S Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F656N Number_of_Iterations: 2 Time_Per_Exposure: 300S Special_Requirements: POS TARG +1.05, +1.05 Exposure_Number: 6 ! Section 6.5 Target_Name: S106S Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F547M Number_of_Iterations: 1 Time_Per_Exposure: 100S Visits ! Section 6 Visit_Number: 3 Visit_Requirements: ORIENT 20D TO 30D Comments: U3PA=25D+/-5 Exposure_Number: 7 ! Section 6.5 Target_Name: S106N2 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F656N Number_of_Iterations: 2 Time_Per_Exposure: 300S Exposure_Number: 8 ! Section 6.5 Target_Name: S106N2 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F656N Number_of_Iterations: 2 Time_Per_Exposure: 300S Special_Requirements: POS TARG +1.05, +1.05 Exposure_Number: 9 ! Section 6.5 Target_Name: S106N2 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F547M Number_of_Iterations: 1 Time_Per_Exposure: 100S 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: ! 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