Science Keywords: Select from 2 to 5 items. Science Keywords is a required field. The total number of Primary Orbits used in all Cycles must equal the total number of Primary Orbits specified on all the Observations. (Compare totals reported on the first and second pages of the PDF Preview.) Please specify your scheduling constraints or 'No Constraints' on all Observation forms. 0 Assigned ID: 1041 ----- Attempting Submission 1 (Fri Aug 09 11:32:26 GMT 2019) ----- HST Phase I Proposal 1041 (Antoniou.apt) successfully submitted. Receipt: # 1041-1 Joint Chandra/HST This is a resubmission due to granted permission to relax the ORIENT constraints on visit 01. I was still not able to update on APT the email address of Stephen Williams. Thank you! -190350847 ----- Attempting Submission 1 (Sun Sep 29 22:03:43 GMT 2019) ----- HST Phase II Proposal 15990 (NGC2336_HST_15990_PhaseII_v3.apt.2019_09_29_22_00.aptbackup) successfully submitted. Receipt: # 15990-1 ----- Attempting Submission 2 (Mon Nov 18 05:32:03 GMT 2019) ----- Determining How X-ray Binary Populations Vary Through Time We propose 200 ks total ACIS-S observations of the spiral galaxy NGC 2336, one of the most actively star-forming galaxies in the local Universe. The proposed observations will reach Lx ~ 7 x 10^{37} erg/s, yielding over 40 high-mass X-ray binaries (XRBs). Archival UV data and supporting Hubble Space Telescope observations fully leverage our proposed Chandra observations by allowing us to: (a) measure the age and metallicity distribution of young XRBs; (b) measure the formation efficiency of young XRBs as a function of the age of their parent stellar populations; (c) constrain XRB formation models; (d) characterize the ultra-luminous XRB population; (e) explore the role of star formation in energizing the ISM; and (f) identify the nature of the nuclear source. The goal of this proposal is to study the star-cluster population in our nearby spiral galaxy NGC2336, and their connection with its X-ray binary population. For this reason we will obtain observations in the F345W, F555W, and F816W filters with the ACS-WFC. In order to maximize the coverage of the galaxy we have defined 3 fields: one in the center, one in the north, and one in the south of the galaxy. The positions of the targets are selected so there is at least 1/2 ACS field coverage in order to increase the depth of the observations, especially in the central parts of the galaxy. Also in order to ensure maximal and uniform coverage we wish the observations we have set a ROLL constraint, and we wish all 3 visits to have the same ROLL. The observations will be taken with a 3point line dither pattern in order to reject cosmic rays and hot pixels and cover the chip gap. The additional coverage provided by the overlapping fields will help to reduce the noise on the chip gap regions in the final mosaics. The total exposure time in each field is 2655 sec, 2722 sec, and 2730 sec for filters F435W, F555W, and F814W, respectively. This will enable us to detect star-clusters as faint as 25 mag with a SNR at least 30, allowing us to derive reliable stellar population parameters. None Required Galaxies and the IGM 6 false false false false false false false SUPPORTED GALAXY NUCLEUS SPIRAL STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 GALAXY SPIRAL SPIRAL ARM STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 GALAXY SPIRAL SPIRAL ARM STAR FORMING REGION This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F555W ACS/WFC Imaging No No F814W POS-TARG DITHER 3.034 LINE false false 3 85.29 ACS-WFC-DITHER-LINE 1 false Hst Same orient constraint links visits (01 02 03) The scheduling data was generated by CASM 27.2. 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