----- Submission 1 (Thu May 05 03:44:17 GMT 2005) ----- ----- Submission 2 (Tue Jun 14 12:50:56 GMT 2005) ----- 50 diagnostics warnings are generated by the suite of POS TARG offsets used to execute the tiling+dithering commands. The PC is submitting for the PI. Assigned ID: 541 ----- Submission 1 (Fri Jan 21 23:35:02 GMT 2005) ----- PI did it. I'm submitting to clear the TEST ID. brett The most distant X-ray cluster at z = 1.4: morphologies, color-magnitude relation and Fundamental Plane We have been engaged in a serendipitous search for very distant clusters based on extended X-ray sources in archival XMM-Newton observations, followed up by R and z snapshot imaging with VLT-FORS2. Very recent VLT-FORS2 spectroscopy of the best high-z candidate (reddest R-z galaxy overdensity) has unambiguously confirmed the presence of a massive cluster at z = 1.392 (11 secure redshifts), a record-breaking distance to date, which bears a crucial leverage on the evolution and formation of the most massive galaxies and clusters. We propose here to obtain deep NICMOS images in the H band and ACS images in the z band of the z = 1.4 cluster. The high resolution and sensitivity will allow us to study morphologies, measure lengthscales and surface photometry of the cluster members. We will analyse the color-magnitude relation and, in combination with velocity dispersions from VLT-FORS2 spectroscopy, we will extend the study of the Fundamental Plane to the highest possible limit. Tracing these scaling relations in clusters to an unprecedented look-back time will enable us to put strong constraints on the formation epoch of cluster galaxies.
These observations consist of a 3x3 mosaic of NIC3 pointings (F160W filter) centered on the galaxy cluster XMMUJ2235. We spend 1.5 orbits on each tile of the mosaic. On each tile we take 6 dithered exposures. Visits 1, 2, and 3 consist of 3 orbits each thus completing two tiles per visit. Visit 4 consists of 4.5+0.5 orbits to complete last 3 tiles + bright star mitigation. ACS z-band orbits awarded to this program were transfered to the GO/Perlmutter/10496 program to facilitate unified SN-monitoring schedule. Optimally, the NICMOS observations should be scheduled on ~25 July 2005 to directly follow complimentary ACS observations monitoring for supernova explosions (GTO/Ford/10698 and GO/Perlmutter/10496). The dithering pattern is the same one as the HDF-S NICMOS observations (GO/Franx/9723) except here POS TARGS are used to establish the tiling in a manner invariant with ORIENT. Please do NOT schedule right after passage through South Atlantic Anomaly and execute 4 visits as closely together in time as possible to avoid problems of variable background. COSMOLOGY 12 false 0.0 false false false false false SUPPORTED CLUSTER OF GALAXIES HIGH REDSHIFT CLUSTER Coordinates of BCG WCS verified with USNO and GSC-2 R and z band magnitudes of the brightest cluster galaxy are respectively 22.4 and 20.3 (AB) J2000 22 35 20.0000 -25 57 42.00 J2000 NIC3 Imaging No No F160W ACS/WFC Imaging No No F850LP Timing requirement is a result of the necessity to schedule these NICMOS observations to provide crucial follow-up of high-redshift supernova potentially discovered by ACS observations (GTO/Ford/10698 and GO/Perlmutter/10496) directly proceeding these NICMOS observations. Orientation requirement assures matching FOV for complimentary ACS/GTO and ACS/GO observations. Please do NOT schedule right after passage through South Atlantic Anomaly. This produces nasty residuals in the images. Please execute 4 visits as closely together in time as possible to avoid problems of variable background. 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Orientation requirement assures matching FOV for complimentary ACS/GTO and ACS/GO observations. Please do NOT schedule right after passage through South Atlantic Anomaly. This produces nasty residuals in the images. Please execute 4 visits as closely together in time as possible to avoid problems of variable background. 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Orientation requirement assures matching FOV for complimentary ACS/GTO and ACS/GO observations. Please do NOT schedule right after passage through South Atlantic Anomaly. This produces nasty residuals in the images. Please execute 4 visits as closely together in time as possible to avoid problems of variable background. 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Orientation requirement assures matching FOV for complimentary ACS/GTO and ACS/GO observations. Please do NOT schedule right after passage through South Atlantic Anomaly. This produces nasty residuals in the images. Please execute 4 visits as closely together in time as possible to avoid problems of variable background. 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