13680( 5) - 22-Aug-2014 11:00:47 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13680 Version: 5 Check-in Time: 22-Aug-2014 11:00:47 STScI Edit Number: 2 Title A 3D view of massive cluster formation in the SMC ------------------------------------------------------------------------------------ Type Cycle GO 22 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Elena Sabbi Space Telescope Science Institute Y CoI: Dr. Jay Anderson Space Telescope Science Institute N CoI: Dr. Daniel J. Lennon ESA-European Space Astronomy Centre N CoI: Prof. Mark Gieles University of Surrey N CoI: Dr. Selma E. de Mink Carnegie Institution of Washington N CoI: Dr. Hugues Sana Space Telescope Science Institute - ESA N CoI: Dr. Roeland P. van der Marel Space Telescope Science Institute N CoI: Dr. Antonella Nota Space Telescope Science Institute - ESA N CoI: Dr. Linda J. Smith Space Telescope Science Institute - ESA N CoI: Dr. Mario Gennaro Space Telescope Science Institute N CoI: Dr. Christopher J. Evans Royal Observatory Edinburgh N ------------------------------------------------------------------------------------ Abstract This is a 5-orbit astrometric proposal designed to measure for the first time the internal dynamics of NGC347, the super-OB-association in the Small Magellanic Cloud. Regions of massive-star formation are important to study because they are intricately related to the origin of the stellar-mass distribution and the formation, evolution and possible disruption of open and globular clusters. Despite its relevance, the process whereby stars form in massive star clusters is still poorly explored terrain within astrophysics. By combining our new observations with archival ACS/WFC data acquired in July 2004, we will be able to (1) measure the relative proper motions of NGC346 sub-clusters better than 3 km/s; (2) investigate the nature of the apparently isolated massive stars found around NGC346; (3) identify runaway OB stars with proper motion velocities >9 km/s and also establish their probable points of origin. Combined with radial velocities (RVs) from the "VLT-FLAMES Survey of Massive Stars", our observations will allow us to determine the 3D dynamics of NGC 346. This work will address significant open issues in: star formation, cluster dynamics, the origin of isolated Type II supernovae and GRBs, and the role of massive star feedback on the interstellar medium. ------------------------------------------------------------------------------------ Observations Description ------------------------ This is an astrometric proposal aimed to measure proper motions in a massive star-forming region in the Small Magellanic Cloud. Observations are designed to duplicate data acquired in 2004 by Nota et al. in program GO-10248. In order to minimize uncertainties we ask to use exaclty the same orients and dither patterns used in Nota's program. ------------------------------------------------------------------------------------ 13680( 5) - 22-Aug-2014 11:00:47 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-346 STELLAR CLUSTER, OB RA=00H59M6.1800S, J2000 V = 14.59 +/- 0.3 ASSOCIATION, STAR DEC=-72D10'31.20" FORMING REGION, YOUNG ASSOCIATION Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-346-COPY STELLAR CLUSTER, OB RA=00H59M6.1800S, J2000 V = 14.59 +/- 0.3 -1 ASSOCIATION, STAR DEC=-72D10'43.20" FORMING REGION, YOUNG ASSOCIATION Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 13680( 5) - 22-Aug-2014 11:00:47 - [ 3] Visit: 01 Visit Requirements: ORIENT 271.4135D TO 271.4135 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-346 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO, FLASH=75. 1 3 S (3 S) POS TARG 50.7904, 3.891 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-346 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO 1 450 S (450 POS TARG 50.7904, 3.891 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-346 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO 1 450 S (450 POS TARG 50.964, 5.2712 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-346 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO 1 450 S (450 POS TARG 51.038, 6.6188 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-346 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO 1 450 S (450 POS TARG 51.212, 7.974 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-346 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO, FLASH=75. 1 3.0 S (3 POS TARG 50.7904, 3.891 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC-346 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO, FLASH=75. 1 2.0 S (2 POS TARG 50.7904, 3.891 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC-346 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO 1 450. S POS TARG 50.7904, 3.891 (450 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC-346 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO 1 450. S POS TARG 50.964, 5.2712 (450 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC-346 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO 1 450. S POS TARG 51.038, 6.6188 (450 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC-346 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO 1 450. S POS TARG 51.212, 7.974 (450 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC-346 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO, FLASH=75. 1 2. S (2 S) POS TARG 50.7904, 3.891 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-346 1 ACS/WFC ACCUM WFC1 F555W none none none none 1 N/A NGC-346 2 ACS/WFC ACCUM WFC1 F555W none none none none 1 N/A 13680( 5) - 22-Aug-2014 11:00:47 - [ 4] 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-346 3 ACS/WFC ACCUM WFC1 F555W none none none none 1 N/A NGC-346 4 ACS/WFC ACCUM WFC1 F555W none none none none 1 N/A NGC-346 5 ACS/WFC ACCUM WFC1 F555W none none none none 1 N/A NGC-346 6 ACS/WFC ACCUM WFC1 F555W none none none none 1 N/A NGC-346 7 ACS/WFC ACCUM WFC1 F814W none none none none 2 N/A NGC-346 8 ACS/WFC ACCUM WFC1 F814W none none none none 2 N/A NGC-346 9 ACS/WFC ACCUM WFC1 F814W none none none none 2 N/A NGC-346 10 ACS/WFC ACCUM WFC1 F814W none none none none 2 N/A NGC-346 11 ACS/WFC ACCUM WFC1 F814W none none none none 2 N/A NGC-346 12 ACS/WFC ACCUM WFC1 F814W none none none none 2 N/A 13680( 5) - 22-Aug-2014 11:00:47 - [ 5] Visit: 02 Visit Requirements: ORIENT 275.5915D TO 275.5915 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-346 ACS/WFC ACCUM WFC2 F814W CR-SPLIT=NO, FLASH=75. 1 2.0 S (2 POS TARG -50.7904, S) -3.8912 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-346 ACS/WFC ACCUM WFC2 F814W CR-SPLIT=NO 1 450.0 S POS TARG -50.3688, (450 S) 0.1916 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-346 ACS/WFC ACCUM WFC2 F814W CR-SPLIT=NO 1 450.0 S POS TARG -50.5424, (450 S) -1.16355 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-346 ACS/WFC ACCUM WFC2 F814W CR-SPLIT=NO 1 450.0 S POS TARG -50.6168, (450 S) -2.5115 ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-346 ACS/WFC ACCUM WFC2 F814W CR-SPLIT=NO 1 450.0 S POS TARG -50.7904, (450 S) -3.8912 ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-346 ACS/WFC ACCUM WFC2 F814W CR-SPLIT=NO, FLASH=75. 1 2.0 S (2 POS TARG -50.7904, S) -3.8912 ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC-346 ACS/WFC ACCUM WFC2 F555W CR-SPLIT=NO, FLASH=75. 1 3. S (3 S) POS TARG -50.7904, -3.8912 ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC-346 ACS/WFC ACCUM WFC2 F555W CR-SPLIT=NO 1 450. S POS TARG -50.3688, (450 S) 0.1916 ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC-346 ACS/WFC ACCUM WFC2 F555W CR-SPLIT=NO 1 450. S POS TARG -50.3688, (450 S) 0.1916 ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC-346 ACS/WFC ACCUM WFC2 F555W CR-SPLIT=NO 1 450. S POS TARG -50.3688, (450 S) 0.1916 ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC-346 ACS/WFC ACCUM WFC2 F555W CR-SPLIT=NO 1 450. S POS TARG -50.3688, (450 S) 0.1916 ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC-346 ACS/WFC ACCUM WFC2 F555W CR-SPLIT=NO, FLASH=75 1 3. S (3 S) POS TARG -50.3688, 0.1916 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 13680( 5) - 22-Aug-2014 11:00:47 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-346 1 ACS/WFC ACCUM WFC2 F814W none none none none 1 N/A NGC-346 2 ACS/WFC ACCUM WFC2 F814W none none none none 1 N/A NGC-346 3 ACS/WFC ACCUM WFC2 F814W none none none none 1 N/A NGC-346 4 ACS/WFC ACCUM WFC2 F814W none none none none 1 N/A NGC-346 5 ACS/WFC ACCUM WFC2 F814W none none none none 1 N/A NGC-346 6 ACS/WFC ACCUM WFC2 F814W none none none none 1 N/A NGC-346 7 ACS/WFC ACCUM WFC2 F555W none none none none 2 N/A NGC-346 8 ACS/WFC ACCUM WFC2 F555W none none none none 2 N/A NGC-346 9 ACS/WFC ACCUM WFC2 F555W none none none none 2 N/A NGC-346 10 ACS/WFC ACCUM WFC2 F555W none none none none 2 N/A NGC-346 11 ACS/WFC ACCUM WFC2 F555W none none none none 2 N/A NGC-346 12 ACS/WFC ACCUM WFC2 F555W none none none none 2 N/A 13680( 5) - 22-Aug-2014 11:00:47 - [ 7] Visit: 05 Visit Requirements: ORIENT 273.2264D TO 273.2264 D; AFTER 01-JUL-2015:00:00:00 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-346-COP ACS/WFC ACCUM WFC F555W CR-SPLIT=NO 1 450 S (450 GS ACQ SCENARIO BASE1B3 Y-1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-346-COP ACS/WFC ACCUM WFC F555W CR-SPLIT=NO 1 450 S (450 POS TARG -1.16, 2.5 Y-1 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-346-COP ACS/WFC ACCUM WFC F555W CR-SPLIT=NO 1 450 S (450 POS TARG 0.297, 5.415 Y-1 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-346-COP ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 450 S (450 POS TARG 0.297, 5.415 Y-1 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-346-COP ACS/WFC ACCUM WFC F814W CR-SPLIT=NO 1 450 S (450 Y-1 S) ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-346-COPY-1 1 ACS/WFC ACCUM WFC F555W none none none none 1 N/A NGC-346-COPY-1 2 ACS/WFC ACCUM WFC F555W none none none none 1 N/A NGC-346-COPY-1 3 ACS/WFC ACCUM WFC F555W none none none none 1 N/A NGC-346-COPY-1 4 ACS/WFC ACCUM WFC F814W none none none none 1 N/A NGC-346-COPY-1 5 ACS/WFC ACCUM WFC F814W none none none none 1 N/A 13680( 5) - 22-Aug-2014 11:00:47 - [ 8] Summary Form for Proposal 13680 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC, WFC1, WFC2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO, FLASH=75, FLASH=75. ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01-JUL-2015:00:00:00, GS ACQ SCENARIO BASE1B3, ORIENT 271.4135D TO 271.4135 D, ORIENT 273.2264D TO 273.2264 D, ORIENT 275.5915D TO 275.5915 D, POS TARG -1.16, 2.5, POS TARG -50.3688, 0.1916, POS TARG -50.5424, -1.16355, POS TARG -50.6168, -2.5115, POS TARG -50.7904, -3.8912, POS TARG 0.297, 5.415, POS TARG 50.7904, 3.891, POS TARG 50.964, 5.2712, POS TARG 51.038, 6.6188, POS TARG 51.212, 7.974 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F555W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-346, NGC-346-COPY-1 ------------------------------------------------------------------------------------------------------------------------------------