11968( 2) - 16-Dec-2008 20:35:11 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11968 Version: 2 Check-in Time: 16-Dec-2008 20:35:11 STScI Edit Number: 0 Title The Light Echoes around V838 Monocerotis: Cycle 16 DD ------------------------------------------------------------------------------------ Type Cycle GO/DD 16 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Howard E. Bond Space Telescope Science Institute CoI: Dr. Romano Corradi Isaac Newton Group, Observatorio del Roque N de los Muchachos CoI: Dr. Lisa A. Crause South African Astronomical Observatory N CoI: Dr. Michael A. Dopita Australian National University N CoI: Dr. Arne A. Henden American Association Of Variable Star N Observers CoI: Dr. Zolt Levay Space Telescope Science Institute N CoI: Dr. Ulisse Munari Universita di Padova N CoI: Dr. Nino Panagia Space Telescope Science Institute N CoI: Dr. William B. Sparks Space Telescope Science Institute N CoI: Dr. Sumner G. Starrfield Arizona State University N CoI: Dr. Ben E. Sugerman Goucher College N CoI: Dr. R. Mark Wagner The Ohio State University Research N Foundation CoI: Dr. Richard L. White Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract This is a DD program in which we propose to obtain WFPC2 imaging of the light echo around V838 Mon in late 2008 or early 2009. We were awarded Cycle 17 time to image the echo with ACS at 2 epochs (3+4 orbits). To obtain data of similar quality with WFPC2 requires 7 orbits at 2 different pointings. Because of the SM4 delay, we are therefore requesting a 14-orbit DD program for Cycle 16, leaving the Cycle 17 allocation unchanged for continued monitoring of the event in late 2009 and 2010. V838 Monocerotis, which burst upon the astronomical scene in early 2002, is a completely unanticipated new object. It underwent a large-amplitude and very luminous outburst, during which its spectrum remained that of an extremely cool supergiant. A rapidly evolving set of light echoes around V838 Mon was discovered soon after the outburst, quickly becoming the most spectacular display of the phenomenon yet seen. These light echoes provide the means to accomplish three unique types of measurements based on continued HST imaging: (1) study MHD turbulence at high resolution and in 3 dimensions; (2) construct the first unambiguous and fully 3-D map of a circumstellar dust envelope; (3) study dust physics in a unique setting where the spectrum and light curve of the illumination, and the scattering angle, are unambiguously known. We have also used our HST data to determine the distance to V838 Mon through a novel geometric technique. Because of the extreme rarity of light echoes, this program of regular monitoring provides the only opportunity to achieve such results during the HST lifetime. We propose WFPC2 imaging in late 2008/early 2009, in order to continue the mapping of the circumstellar dust and to accomplish the other goals listed above. 11968( 2) - 16-Dec-2008 20:35:11 - [ 2] ------------------------------------------------------------------------------------ Observations Description ------------------------ This is a 14-orbit DD program for imaging of the light echo around V838 Mon with the WFPC2. Images will be taken in broad-band V (F606W). We will use 2 pointings of 7 orbits each, with dithering, to cover nearly the entire echo. The observations should be done before the end of the target visibility season in early 2009. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11968( 2) - 16-Dec-2008 20:35:11 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 V838-MON-ECH ISM, EJECTA, PLANETARY RA=07H04M5.8200S +/- 0.1", J2000 V = 15.5 O-COPY NEBULA, REFLECTION DEC=-03D50'40.00" +/- 0.1" NEBULA, WIND Reference Frame: ICRS Comments: Geometric center of light echo, based on ACS images obtained in September 2006. ------------------------------------------------------------------------------------------------------------------------------------ 11968( 2) - 16-Dec-2008 20:35:11 - [ 4] Visit: 01 Visit Requirements: BETWEEN 15-DEC-2008:00:00:00 AND 01-MAR-2009:00:00:00 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 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 8.34, 13.99 HO-COPY see below ------------------------------------------------------------------------------------------------------------------------------------ 2 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 8.838, 14.239 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 3 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 9.087, 14.737 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 4 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 8.589, 14.488 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 5 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 8.34, 13.99 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 6 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 8.838, 14.239 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 7 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG 9.087, 14.737 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ V838-MON-ECHO-COPY 1 WFPC2 IMAGE WFALL-FI F606W none none 1 none 1 1100.0 S X V838-MON-ECHO-COPY 1 WFPC2 IMAGE WFALL-FI F606W none none 2 none 1 1100.0 S X V838-MON-ECHO-COPY 2 WFPC2 IMAGE WFALL-FI F606W none none 1 none 2 N/A X V838-MON-ECHO-COPY 2 WFPC2 IMAGE WFALL-FI F606W none none 2 none 2 N/A X V838-MON-ECHO-COPY 3 WFPC2 IMAGE WFALL-FI F606W none none 1 none 3 N/A X V838-MON-ECHO-COPY 3 WFPC2 IMAGE WFALL-FI F606W none none 2 none 3 N/A X V838-MON-ECHO-COPY 4 WFPC2 IMAGE WFALL-FI F606W none none 1 none 4 N/A X 11968( 2) - 16-Dec-2008 20:35:11 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ V838-MON-ECHO-COPY 4 WFPC2 IMAGE WFALL-FI F606W none none 2 none 4 N/A X V838-MON-ECHO-COPY 5 WFPC2 IMAGE WFALL-FI F606W none none 1 none 5 N/A X V838-MON-ECHO-COPY 5 WFPC2 IMAGE WFALL-FI F606W none none 2 none 5 N/A X V838-MON-ECHO-COPY 6 WFPC2 IMAGE WFALL-FI F606W none none 1 none 6 N/A X V838-MON-ECHO-COPY 6 WFPC2 IMAGE WFALL-FI F606W none none 2 none 6 N/A X V838-MON-ECHO-COPY 7 WFPC2 IMAGE WFALL-FI F606W none none 1 none 7 N/A X V838-MON-ECHO-COPY 7 WFPC2 IMAGE WFALL-FI F606W none none 2 none 7 N/A X 11968( 2) - 16-Dec-2008 20:35:11 - [ 6] Visit: 02 Visit Requirements: SAME ORIENT AS 01; BETWEEN 15-DEC-2008:00:00:00 AND 01-MAR-2009:00:00:00 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 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -66.36, 13.99 HO-COPY see below ------------------------------------------------------------------------------------------------------------------------------------ 2 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -65.862, 14.239 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 3 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -65.613, 14.737 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 4 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -66.111, 14.488 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 5 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -66.36, 13.99 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 6 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -65.862, 14.239 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 7 V838-MON-EC WFPC2 IMAGE WFALL-FIX F606W CR-SPLIT=NO 2 1100.0 S POS TARG -65.613, 14.737 HO-COPY ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ V838-MON-ECHO-COPY 1 WFPC2 IMAGE WFALL-FI F606W none none 1 none 1 1100.0 S X V838-MON-ECHO-COPY 1 WFPC2 IMAGE WFALL-FI F606W none none 2 none 1 1100.0 S X V838-MON-ECHO-COPY 2 WFPC2 IMAGE WFALL-FI F606W none none 1 none 2 N/A X V838-MON-ECHO-COPY 2 WFPC2 IMAGE WFALL-FI F606W none none 2 none 2 N/A X V838-MON-ECHO-COPY 3 WFPC2 IMAGE WFALL-FI F606W none none 1 none 3 N/A X V838-MON-ECHO-COPY 3 WFPC2 IMAGE WFALL-FI F606W none none 2 none 3 N/A X V838-MON-ECHO-COPY 4 WFPC2 IMAGE WFALL-FI F606W none none 1 none 4 N/A X 11968( 2) - 16-Dec-2008 20:35:11 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ V838-MON-ECHO-COPY 4 WFPC2 IMAGE WFALL-FI F606W none none 2 none 4 N/A X V838-MON-ECHO-COPY 5 WFPC2 IMAGE WFALL-FI F606W none none 1 none 5 N/A X V838-MON-ECHO-COPY 5 WFPC2 IMAGE WFALL-FI F606W none none 2 none 5 N/A X V838-MON-ECHO-COPY 6 WFPC2 IMAGE WFALL-FI F606W none none 1 none 6 N/A X V838-MON-ECHO-COPY 6 WFPC2 IMAGE WFALL-FI F606W none none 2 none 6 N/A X V838-MON-ECHO-COPY 7 WFPC2 IMAGE WFALL-FI F606W none none 1 none 7 N/A X V838-MON-ECHO-COPY 7 WFPC2 IMAGE WFALL-FI F606W none none 2 none 7 N/A X 11968( 2) - 16-Dec-2008 20:35:11 - [ 8] Summary Form for Proposal 11968 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFALL-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 15-DEC-2008:00:00:00 AND 01-MAR-2009:00:00:00, POS TARG -65.613, 14.737, POS TARG -65.862, 14.239, POS TARG -66.111, 14.488, POS TARG -66.36, 13.99, POS TARG 8.34, 13.99, POS TARG 8.589, 14.488, POS TARG 8.838, 14.239, POS TARG 9.087, 14.737, SAME ORIENT AS 01 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names V838-MON-ECHO-COPY ------------------------------------------------------------------------------------------------------------------------------------