Phase 2 material updated following useful comments from Ray Lucas and Michale Leveille. We removed the ORIENTs in order to enlarge the observability window. 1100479799 ----- Attempting Submission 1 (Wed Jan 02 17:43:21 GMT 2019) ----- ----- Attempting Submission 3 (Thu Jul 18 18:41:59 GMT 2019) ----- ----- Attempting Submission 4 (Mon Jul 22 07:59:31 GMT 2019) ----- ----- Attempting Submission 5 (Wed Jul 31 05:32:24 GMT 2019) ----- Studying Six Galaxy Clusters to be Used as Gravitational Lense Telescopes The most massive galaxy clusters are extremely valuable study objects for a wide range of astrophysical and cosmological studies. In our completed all-sky X-ray cluster survey we found 6 rare, massive galaxy clusters (M500 greater than 6.4 x 10e14 Msun) in the redshift range z = 0.25 to 0.5 (sweet spot for gravitational lensing studies), which have not been observed in X-ray pointed observations so far (one has a short XMM exposure). We propose these objects for XMM-Newton and the two most interesting systems for HST observations, with a main goal to characterise their properties for lensing studies and their use as gravitational lensing telescopes. In addition these observations complete an important sample of massive clusters to be used for a range of cosmological studies. This observation request is based on an XMM-Newton proposal with jointly allocted HST Time. Massive galaxy clusters are important study objects for Astrophysics and Cosmology. Since they are also very rare objects, the discovery and study of them is very valuable. In our recently completed all-sky survey for X-ray luminous clusters of galaxies we found six massive clusters (estimated M > 6.4 10e14 Msun) among 119 such objects in the redshift range z = 0.25 to 0.5 which have not been known and studied before. Massive clusters in this redshift range are the best grvitational lense telescopes for the study of the distant Universe. Because of the importance of these objects, we have requested XMM-Newton observing time to study all six objects, to determine their properties, their masses and the mass distribution in the clusters. The latter will allow us to construct first gravitational lensing models of the clusters and evaluate their efficiency as gravitational lense telescopes. For the two most prominent systems we have also requested HST observations to use them as gravitational lense telescopes for the detection of magnified high redshift galaxies. To be able to determine photometric redhsifts for the galaxies in the sky field of the clusters, we requested optical observations with ACS F814W and near infrared observations with WFC3 F110W and 160W. With the obtained data we will be able to detect magnified background galxies up to redshift z = 6 and beyond. The field-of-view of the observations will cover a cluster region of 0.8 to 1.2 Mpc for ACS and 500 - 800 Mpc for WFC3. This will easily provide a complete coverage of the strong lensing regions of the clusters. 6 false false false false false false false SUPPORTED CLUSTER OF GALAXIES GRAVITATIONAL LENS ABELL1686 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS J2000 POS-TARG DITHER 3.034 LINE false true 3 85.29 ACS-WFC-DITHER-LINE 1 false POS-TARG DITHER DITHER 4 5.183 WFC3-IR-DITHER-BOX-MIN false 74.653 true 0.365 0.572 2 41.859 POS-TARG WFC3-IR-DITHER-BLOB 18.528 2 false The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1582385124000 260.0 (Tic-Visit :proposal-id 15670 :visit-id "01" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 06:18:10.0" :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 1618656 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15670 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 15670 :visit-id "01" :obset-id "A1" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15670 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2794 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3157 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15670 :visit-id "01" :orbit-number 2 :pcs-time 333 :si-vis-utilization 2645 :al-overhead-at-end 0 :internal-dur-at-end 386 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3157 :pcs-gap 0 ) false 2 0 We invite the schedulers to rearrange the exposures within the visit as they wish to best fit the F110W's into the darker time of the orbit as anticipated from the specific geometry that the schedule implies. We discussed this specific point with Dr. Mc Cullough via email. /solaris/user1/mleveille/hst-work/OP-cache/15670-v51.xml Partial repeat of visit 01 (Tic-Visit :proposal-id 15670 :visit-id "51" :proposal-version -1 :trans-version "20191203" :date "02-Apr-2020 09:36:38.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 852672 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15670 :visit-id "51" :obset-id "51" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15670 :visit-id "51" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2794 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3157 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15670 :visit-id "02" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 06:18:12.0" :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 1618656 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15670 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 15670 :visit-id "02" :obset-id "A2" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15670 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2830 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15670 :visit-id "02" :orbit-number 2 :pcs-time 333 :si-vis-utilization 2645 :al-overhead-at-end 0 :internal-dur-at-end 386 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) true 2 0 We invite the schedulers to rearrange the exposures within the visit as they wish to best fit the F110W's into the darker time of the orbit as anticipated from the specific geometry that the schedule implies. We discussed this specific point with Dr. Mc Cullough via email.