0 Assigned ID: 317 ----- Attempting Submission 1 (Fri Apr 11 01:19:51 GMT 2014) ----- 0 ----- Attempting Submission 1 (Thu Jul 24 13:16:55 GMT 2014) ----- Kinematics of a Massive Star Cluster in Formation We propose to measure the proper motion stellar kinematics of a massive (~10^4Msun), forming proto-star-cluster to test basic theoretical models of formation. This will be the first time such a measurement has been performed. It requires HST-WFC3/IR and is beyond the practical capabilities of ground-based adaptive optics (AO) observations. In contrast to previously-studied massive, young (<10 Myr-old), already-formed clusters, such as NGC3603, Westerlund 1 or the Arches, our target protocluster, G286.21+0.17 (hereafter G286), is still gas-dominated and undergoing active star formation. It has been carefully selected from a complete survey of ~300 dense molecular gas clumps in a 120 sq. deg. region of the Galactic plane. The cluster is also relatively nearby (~2.5 kpc), but not too close that it would span a prohibitively large angular area or suffer from significant saturation problems. Such massive systems are rare and indeed we are unaware of any equivalent, early-stage (i.e., gas dominated) cluster that is closer. Given the depth of its gravitational potential based on its mass and size, the expected proper motions of many independent sub-clusters of stars are detectable at the ~5 sigma level over a 2-year baseline and global contraction of the cluster can be seen if it is happening even at just ~10% of the free-fall rate. IMPORTANT NOTES ABOUT SCHEDULING This program is the first epoch of a multi-cycle program to derive astrometric proper motions. As such, it is critical for us that the visits are scheduled as close as possible to the beginning of Cycle 22. Our constraints to match the same FOV of ground based AO K-band observations already in our hands requires us to use a given orientation of our 3x3 mosaic, or rotations of it of multiples of 90 degrees. Thus, the best solution for our science case is, as we have specified in this Phase II, to constrain the ORIENT angle such that the observations will be scheduled in October 2014. We understand that this period has lower schedulability than other periods of the cycle. IN CASE OF SCHEDULING CONFLICTS, HOWEVER, WE COULD ALSO ROTATE THE ORIENT 90 DEGREES, and have the observations taken in January 2015. Such modificantion, although not optimal, would still be acceptable for us. Note that it would require a small modification of the target coordinates, in order to preserve the overlap between the individual pointings given that WFC3/IR has a rectangular FOV in the sky. Please inform us if any schedulability problems will occur. =================================== Additional summary on the program. This is a 3x3 mosaic of 9 pointings. Each pointing is a visit. Each visit 2 orbits. The same setup of exposures in 3 filters, dithering, etc is identical for all the 9 visits. We have allowed a 20 degrees range of the orient angle, and constrained all visits to share the same orient as the first visit. For practical reasons, instead of using the mosaic tool of the APT phase II, we have manually defined 9 targets, one for each tile of the mosaics. Similarly, in each exposure we have manually defined the dithering patterns through the POS ARG keywords. RESOLVED STAR FORMATION Default false false 0.0 0.0 false false false SUPPORTED STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 STELLAR CLUSTER OB ASSOCIATION OPEN CLUSTER STAR FORMING REGION YOUNG ASSOCIATION J2000 J2000 WFC3/IR Imaging No No F167N WFC3/IR Imaging No No F110W Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412020310000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "01" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:49:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) false 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412044457000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "02" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:49:48.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412124187000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "03" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:49:53.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /private/var/folders/8k/sxlgy5ts2xdbykzf_vw6jrfw0001c5/T/OPVisit3034693632342505287.xml - (Tic-Visit :proposal-id 13742 :visit-id "53" :proposal-version -1 :trans-version "20140605" :date "19-Nov-2014 14:52:25.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "53" :obset-id "53" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "53" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "53" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1411959315000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "04" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:49:57.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412180562000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "05" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:50:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "05" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412295888000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "06" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:50:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "06" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412215908000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "07" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:50:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "07" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412381893000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "08" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:50:14.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "08" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "08" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 Hst Same orient constraint links visits (01 02 03 04 05 06 07 08 09 53) The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. - 1412493581000 215.00000000000006 (Tic-Visit :proposal-id 13742 :visit-id "09" :proposal-version -1 :trans-version "20140605" :date "06-Nov-2014 12:50:18.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4143424 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13742 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13742 :visit-id "09" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3091 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13742 :visit-id "09" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3193 :al-overhead-at-end 0 :internal-dur-at-end 557 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0