11114( 3) - 10/08/07 16:52 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11114 Version: 3 Check-in Time: 08-Oct-2007 20:52:00 STScI Edit Number: 1 Title Improving proper motion measurements of the stars in the field of SN 1572 with WFPC2 ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 16 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Pilar Ruiz-Lapuente Universidad de Barcelona CoI: Prof. Ramon Canal Universidad de Barcelona N CoI: Mr. Ryan Chornock University of California - Berkeley N CoI: Dr. Fernando Comeron European Southern Observatory - Germany N CoI: Prof. Alex V. Filippenko University of California - Berkeley N CoI: Mr. Ryan Foley University of California - Berkeley N CoI: Dr. Jonay Gonzalez-Hernandez Observatoire de Paris - Section de Meudon N CoI: Dr. Rodrigo Ibata Universite de Strasbourg I N CoI: Dr. Robert L. Kurucz Smithsonian Institution Astrophysical N Observatory CoI: Mr. Javier Mendez Universidad de Barcelona N ------------------------------------------------------------------------------------ Abstract We propose to complete the spatial velocity measurements of the stars in the central region of the remnant of SN 1572, one of the historical Galactic Type Ia supernovae. A new visit with WFPC2 would allow us to significantly improve the accuracy of the proper motion measurements of the stars in the field, since we would benefit from a long temporal baseline by using the WFPC2 images previously taken. This unique legacy would complement the high-precision ground-based observations made for the stars in the SN 1572 field during the past ten years. The search for the companion star of Galactic Type Ia supernovae, based on their high peculiar velocity as a salient feature, has already pointed to a good candidate for SN 1572. The current uncertainties in the tangential velocity of the candidate star and the other stars in the field can be reduced to less than a half with a visit in Cycle 16. This would lead to a precise determination of the parameters of the binary system that gave rise to the supernova. If not done during Cycle 16, the long temporal baseline for SN 1572 with WFPC2 would be lost. ------------------------------------------------------------------------------------ 11114( 3) - 10/08/07 16:52 - [ 2] Observations Description ------------------------ Reobservation of Cycle 12 images Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11114( 3) - 10/08/07 16:52 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SN1572A STAR, SUPERNOVA TYPE IA RA=00H25M23.4600S +/- 0.1", J2000 V = 21.0 DEC=+64D07'34.14" +/- 0.1" Reference Frame: ICRS 2 SN1572A-COPY STAR, SUPERNOVA TYPE IA RA=00H25M19.8000S +/- 0.1", J2000 V = 21.0 DEC=+64D08'19.70" +/- 0.1" Reference Frame: ICRS 11114( 3) - 10/08/07 16:52 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFPC2-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.559017 Line_Spacing 0.559017 Coordinate_Frame POS-TARG Pattern_Orient 26.56505 Angle_Between_Sides 143.130102 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFPC2-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.3535 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 45.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 11114( 3) - 10/08/07 16:52 - [ 5] Visit: 01 Visit Priority: Visit Requirements: ORIENT 130.0D TO 140.0 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN1572A WFPC2 IMAGE WF3-FIX F555W CR-SPLIT=0.5 1 200 S PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SN1572A WFPC2 IMAGE WF3-FIX F555W CR-SPLIT=0.5 1 320 S PATTERN 1 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 SN1572A WFPC2 IMAGE WF3-FIX F555W CR-SPLIT=0.5 1 1 S PATTERN 2 3 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 1 none none 1 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 1 none none 2 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 2 none none 1 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 2 none none 2 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 3 none none 1 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 3 none none 2 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 4 none none 1 1 N/A SN1572A 1 WFPC2 IMAGE WF3-FIX F555W 4 none none 2 1 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 1 none none 1 1 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 1 none none 2 1 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 2 none none 1 2 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 2 none none 2 2 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 3 none none 1 2 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 3 none none 2 2 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 4 none none 1 2 N/A SN1572A 2 WFPC2 IMAGE WF3-FIX F555W 4 none none 2 2 N/A SN1572A 3 WFPC2 IMAGE WF3-FIX F555W 1 none none 1 2 N/A SN1572A 3 WFPC2 IMAGE WF3-FIX F555W 1 none none 2 2 N/A SN1572A 3 WFPC2 IMAGE WF3-FIX F555W 2 none none 1 2 N/A SN1572A 3 WFPC2 IMAGE WF3-FIX F555W 2 none none 2 2 N/A 11114( 3) - 10/08/07 16:52 - [ 6] Visit: 02 Visit Priority: Visit Requirements: ORIENT 130.0D TO 140.0 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN1572A-COP WFPC2 IMAGE WF3-FIX F555W CR-SPLIT=0.5 1 200 S PATTERN 1 1 Y ------------------------------------------------------------------------------------------------------------------------------------ 2 SN1572A-COP WFPC2 IMAGE WF3-FIX F555W CR-SPLIT=0.5 1 320 S PATTERN 1 2 Y ------------------------------------------------------------------------------------------------------------------------------------ 3 SN1572A-COP WFPC2 IMAGE WF3-FIX F555W CR-SPLIT=0.5 1 1 S PATTERN 2 3 Y ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 1 none none 1 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 1 none none 2 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 2 none none 1 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 2 none none 2 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 3 none none 1 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 3 none none 2 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 4 none none 1 1 N/A SN1572A-COPY 1 WFPC2 IMAGE WF3-FIX F555W 4 none none 2 1 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 1 none none 1 1 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 1 none none 2 1 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 2 none none 1 2 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 2 none none 2 2 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 3 none none 1 2 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 3 none none 2 2 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 4 none none 1 2 N/A SN1572A-COPY 2 WFPC2 IMAGE WF3-FIX F555W 4 none none 2 2 N/A SN1572A-COPY 3 WFPC2 IMAGE WF3-FIX F555W 1 none none 1 2 N/A SN1572A-COPY 3 WFPC2 IMAGE WF3-FIX F555W 1 none none 2 2 N/A SN1572A-COPY 3 WFPC2 IMAGE WF3-FIX F555W 2 none none 1 2 N/A SN1572A-COPY 3 WFPC2 IMAGE WF3-FIX F555W 2 none none 2 2 N/A 11114( 3) - 10/08/07 16:52 - [ 7] Summary Form for Proposal 11114 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WF3-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=0.5 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 130.0D TO 140.0 D; PATTERN 1 1; PATTERN 1 2; PATTERN 2 3; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F555W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SN1572A SN1572A-COPY ------------------------------------------------------------------------------------------------------------------------------------