A dataset provided by the European Space Agency

Name DDT_jsantos_3
Title Tracing star-formation at the dawn of cluster assembly in the galaxy cluster XMM0044 at z=1.6
URL

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DOI 10.5270/esa-540cx6n
Author santos, j.
Description We propose to obtain PACS-SPIRE imaging observations of XMM0044 at redshift z=1.58, one of the most massive, distant X-ray luminous cluster known to date, which was discovered within the XMM Distant Cluster Project. With the proposed data we will obtain an unbiased characterization of star-formation activity in the cluster galaxy population, at a critical epoch for cluster assembly. Based on its X-ray luminosity we estimate the cluster mass range to be [3.5-5]x10^14 Msun, indicating that this cluster already has a massive halo, at a cosmic epoch when cluster galaxies are observed to undergo significant structural and color transformation. Our optical NIR-IR follow-up observations unveiled a population of disturbed galaxies, with on-going star-formation and compelling evidence of merger activity in the brightest galaxies. The compact core with 4 galaxies within a radius of 3" is suggestive of the early formation stage of a BCG. The goal of this 10.2 hr program is to measure accurate star-formation rates of the cluster population in XMM0044 at z=1.6, by integrating the galaxies far-infrared (FIR) luminosity provided by PACS+SPIRE photometry. The observational window opened by Herschel straddles the critical peak of FIR emission of z=1-2 galaxies, providing a direct measurement of the on-going star-formation activity derived from the total infrared luminosity a technique that is unaffected by the uncertainties associated to extrapolations to the IR. Herschel is therefore fundamental to provide a view of the star-formation properties of distant galaxy clusters that up to now has been out of reach, in order to provide a comprehensive understanding of SF activity in high-density environments and the study of the evolution of the morphology-density relation. The requested observations will be the deepest FIR data of a high-z cluster, allowing us to reach star-formation rates as low as 50 Msun-yr (corresponding to Lumino...
Publication The reversal of the SF-density relation in a massive, X-ray-selected galaxy cluster at z = 1.58: results from Herschel . Santos J. S. et al. . Monthly Notices of the Royal Astronomical Society: Letters, Volume 447, Issue 1, p.L65-L69 . 447 . 10.1093\/mnrasl\/slu180 . 2015MNRAS.447L..65S ,
Instrument PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_small
Temporal Coverage 2012-12-25T03:24:32Z/2013-01-03T04:40:41Z
Version SPG v14.2.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-07-03T04:37:52Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-07-03T04:37:52Z, DDT_jsantos_3, SPG v14.2.0. https://doi.org/10.5270/esa-540cx6n