!Subject: phase2 submission ! SUBMITTED BY PI ON FEB 9, 1995 !__Proposal-Section__ !6127 ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 6127,v 5.1 1996/02/21 16:03:24 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: Christian Ready ! Phone: 410 338-4546 , E-mail: ready@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Mon Dec 19 08:30:26 EST 1994 ! Proposal_Information ! Section 4 Title: Velocity field and small scale structure in the L1551 IRS5 jet Proposal_Category: GO Scientific_Category: Interstellar Medium Cycle: 5 Investigators PI_name: Dr. Malcolm Fridlund PI_Institution: Astrophysics Division, European Space Agency CoI_Name: Dr. Rene Liseau CoI_Institution: Stockholm Observatory Contact: N ! Y or N (designate at most one contact) CoI_Name: Erik Lidberg CoI_Institution: Stockholm Observatory Contact: N ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to image the optical jet emanating from the young stellar object L1551 IRS5 over a period of three cycles. Using two narrow band filters sensitive to high- and low-excitation shocks respectively and two wide-band filters sensitive to line-emission and dust scattering respectively, we aim to study the time evolution of small scale structures within this object. Ground based observations have already detected the time scale for evolution of this object. HST is going to provide the level of detail necessary for a direct comparison with (existing) hydrodynamical models. Our data will resolve the smallest features observed (optically) so far in an astrophysical jet, and also detect their time evolution. Questions ! Free format text (please update) Observing_Description: We will obtain 4 deep images in each of H-Alpha, SII, R and the I-band in each cycle. Although, relative astrometry of the movements of the knots in the jet is the main purpose of this proposal, the orientation of the HST should be such that the few reference stars available within the field of view fall onto the wide field part of the camera thus making absolute astrometry possible. 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:L1551-IRS5 Alternate_Names: Description:ISM,HERBIG-HARO OBJECT,BIPOLAR OUTFLOW,JET Position:RA=4H 28M 40.23S +/- 0.02S, DEC=+18D 1' 42.23" +/- 0.7" ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox:1950.0 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch:1982.11 Annual_Parallax: Flux:F-LINE(6563)=3.3E-14 W-LINE(6563)=7+/-3 F-Line(6716)=1.0E-14 W-LINE(6716)=7+/-3 F-LINE(6731)=1.9E-14 W-LINE(6731)=7+/-3 ! Include at least V and B-V Comments:Total fluxes for 10 arcsec by 2 arcsec part of jet. ! 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 PCS MODE Fine ! GUIDing TOLerance ORIENTation 40D TO 90D ! ORIENTation TO FROM ! ORIENTation TO FROM NOMINAL ! SAME ORIENTation AS ! CVZ ! PARallel ! AFTER [BY [TO ]] ! AFTER ! BEFORE ! BETWEEN AND ! GROUP WITHIN