! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! ! 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: AAAAAA BBBBBB, ! Phone: 410/338-CCCC, E-mail: DDDDDDD@stsci.edu ! Proposal_Information ! Section 4 Title: The Structure of Nova Shells Proposal_Category: GO Scientific_Category: Interstellar Medium Cycle: 5 Investigators PI_Name: Michael Shara PI_Institution: Space Telescope Science Institute CoI_Name: Mario Livio ! Repeat as often as necessary CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: Dina Prialnik ! Repeat as often as necessary CoI_Institution: Tel-Aviv University Contact: ! Y or N (designate at most one contact) CoI_Name: Robert Williams ! Repeat as often as necessary CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: David Zurek ! Repeat as often as necessary CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (clear and concise) Recent WFPC2 observations of the recurrent nova T Pyxidis show that the ejected material from the previous eruptions is neither uniform nor isotropic. Rather, the ejecta is distributed in hundreds of unresolved knots. If this result is the norm for all nova ejecta then all previous mass estimates and ejection models for nova shells are probably incorrect. Observationally determined masses of nova shells provide a very important test to the nova theory. We are proposing to use WFPC2 to determine if 1) all nova shells are in fact broken into knots, and, for the closest shells, 2) to determine the size distribution of these knots. In addition WFPC2 observations of T Pyxidis will enable us to determine whether the clumpy shell is expanding. Finally, we are asking for a reendorsement (granted in cycles 1 and 4) to observe the effects of the next eruption of T Pyx (once in a generation and now several years overdue) on its multitude of circumstellar knots. Questions ! Free format text (clear and concise) Observing_Description: We will image the shell of T Pyx to ensure that the knot(s) of interest are still the brightest knots. Then approximately 3 weeks later we will point FOS at the desired knot. We will first peak up on the central star (T Pyx itself) and then offset to the desired knot. Since this is at most 4.5 arcseconds away it should have a very low error on pointing. Finally, several weeks to months after the spectra we will once again image T Pyx to determine if the knot(s) for which we have spectra has decreased in luminosity. Real_Time_Justification: None Calibration_Justification: Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: T-PYXIDIS Alternate_Names: Description: STAR, RECURRENT NOVA, SHELL Position: RA=9H 04M 41.500S +/- 0.02S,DEC=-32D 22' 47.00" +/- 0.2",PLATE-ID=04J9 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=14.5 +/- 0.5, B-V = 0.12 +/- 0.05, U-B = -0.96 +/- 0.05, E(B-V) = 0.35 +/- 0.05 ! Include at least V and B-V Comments: Target_Number: 2 Target_Name: T-PYX-KNOT-1 Alternate_Names: Description: ISM, EMISSION LINE NEBULA, EJECTA, KNOT, SHELL Position: RA-OFF=0.3502S +/- 0.02S,DEC-OFF=0.753" +/- 0.2",FROM 1,PLATE-ID=04J9 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: F-LINE(6588) = 3.83 +/- 0.04 E-17 ! Include at least V and B-V Comments: ! Target_Number: 3 ! Target_Name: T-PYX-KNOT-2 !Alternate_Names: ! Description: ISM, EMISSION LINE NEBULA, EJECTA, KNOT, SHELL ! Position: RA-OFF=-0.2381S +/- 0.001S,DEC-OFF=0.158" +/- 0.01",FROM 1,PLATE-ID=04J9 ! 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: F-LINE(6588) = 2.39 +/- 0.06 E-17 ! Include at least V and B-V ! Comments: Visits ! Section 6 Visit_Number: 1 Visit_Requirements: ! Section 7.1 PCS MODE Fine Visit_Comments: Note that this visit is to ensure that the knot we wish to obtain spectra for is still there and is still the brightest knot. Exposure_Number: 1 ! Section 6.5 Target_Name: T-PYXIDIS Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F658N Wavelength: Optional_Parameters: CR-SPLIT = 0.5, CR-TOLERANCE = 0.0 Number_of_Iterations: 1 Time_Per_Exposure: 2400S Special_Requirements: ! Section 7.2 Comments: Visits ! Section 6 Visit_Number: 2 Visit_Requirements: ! Section 7.1 PCS MODE Fine AFTER 1 BY 28d TO 35d Visit_Comments: Exposure_Number: 1 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 4.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=1.23, SEARCH-SIZE-Y=3, SEARCH-SIZE-X=1 Number_of_Iterations: 1 Time_Per_Exposure: 0.2S Special_Requirements: ONBOARD ACQuisition FOR 2-6 ! Section 7.2 Exposure_Number: 2 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 1.0 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.61, SCAN-STEP-X=0.61, SEARCH-SIZE-Y=2, SEARCH-SIZE-X=6 Number_of_Iterations: 1 Time_Per_Exposure: 0.2S Special_Requirements: ONBOARD ACQuisition FOR 3-6 ! Section 7.2 Exposure_Number: 3 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.5 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.29, SCAN-STEP-X=0.29, SEARCH-SIZE-Y=3, SEARCH-SIZE-X=3 Number_of_Iterations: 1 Time_Per_Exposure: 0.2S Special_Requirements: ONBOARD ACQuisition FOR 4-6 ! Section 7.2 Exposure_Number: 4 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.11, SCAN-STEP-X=0.11, SEARCH-SIZE-Y=4, SEARCH-SIZE-X=4 Number_of_Iterations: 1 Time_Per_Exposure: 2S Special_Requirements: ONBOARD ACQuisition FOR 5-6 ! Section 7.2 Exposure_Number: 5 ! Section 6.5 Target_Name: T-PYX-KNOT-1 Config: FOS/RD Opmode: ACCUM Aperture: 0.5 Sp_Element: G400H Wavelength: 3238-4781 Optional_Parameters: Number_of_Iterations: 3 Time_Per_Exposure: 2400S Special_Requirements: ! Section 7.2 Exposure_Number: 6 ! Section 6.5 Target_Name: T-PYX-KNOT-1 Config: FOS/RD Opmode: ACCUM Aperture: 0.5 Sp_Element: G570H Wavelength: 4571-6820 Optional_Parameters: Number_of_Iterations: 3 Time_Per_Exposure: 2400S Special_Requirements: ! Section 7.2 Comments: Visits ! Section 6 Visit_Number: 3 Visit_Requirements: ! Section 7.1 PCS MODE Fine AFTER 1 BY 28d TO 35d Visit_Comments: Exposure_Number: 1 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 4.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=1.23, SEARCH-SIZE-Y=3, SEARCH-SIZE-X=1 Number_of_Iterations: 1 Time_Per_Exposure: 0.2S Special_Requirements: ONBOARD ACQuisition FOR 2-6 ! Section 7.2 Exposure_Number: 2 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 1.0 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.61, SCAN-STEP-X=0.61, SEARCH-SIZE-Y=2, SEARCH-SIZE-X=6 Number_of_Iterations: 1 Time_Per_Exposure: 0.2S Special_Requirements: ONBOARD ACQuisition FOR 3-6 ! Section 7.2 Exposure_Number: 3 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.5 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.29, SCAN-STEP-X=0.29, SEARCH-SIZE-Y=3, SEARCH-SIZE-X=3 Number_of_Iterations: 1 Time_Per_Exposure: 0.2S Special_Requirements: ONBOARD ACQuisition FOR 4-6 ! Section 7.2 Exposure_Number: 4 ! Section 6.5 Target_Name: T-PYXIDIS Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: SCAN-STEP-Y=0.11, SCAN-STEP-X=0.11, SEARCH-SIZE-Y=4, SEARCH-SIZE-X=4 Number_of_Iterations: 1 Time_Per_Exposure: 2S Special_Requirements: ONBOARD ACQuisition FOR 5-6 ! Section 7.2 Exposure_Number: 5 ! Section 6.5 Target_Name: T-PYX-KNOT-1 Config: FOS/RD Opmode: ACCUM Aperture: 0.5 Sp_Element: G400H Wavelength: 3238-4781 Optional_Parameters: Number_of_Iterations: 3 Time_Per_Exposure: 2400S Special_Requirements: ! Section 7.2 Exposure_Number: 6 ! Section 6.5 Target_Name: T-PYX-KNOT-1 Config: FOS/RD Opmode: ACCUM Aperture: 0.5 Sp_Element: G570H Wavelength: 4571-6820 Optional_Parameters: Number_of_Iterations: 3 Time_Per_Exposure: 2400S 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 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! ! 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