|Len Cowie||Deep Submillimeter, Near Infrared and Optical Observations of the Chandra Deep Fields|
|Harry Ferguson||The Deepest Chandra Fields in the Infrared: Making the Connection Between Normal Galaxies and AGN|
|Paul Nandra||The X-ray Emission of High Redshift Galaxies|
PI: Len Cowie Proposal Title: Deep Submillimeter, Near Infrared and Optical Observations of the Chandra Deep Fields Abstract: The 1Ms Chandra fields will provide a map of the accretion history of the Universe by resolving more than 97% of the hard X-ray background into discrete sources. We propose to obtain the optical, near-infrared, and submillimeter imaging data necessary to, (i)make optical identifications of the sources to the deepest limits possible, (ii)make near-infrared identifications of the optically faint sources, (iii) determine the average submillimeter properties of the X-ray population and hence the fraction of the submillimeter extragalactic light which arises in AGN activity versus star formation, (iv)determine the fraction of various optically selected galaxies by type and luminosity which are X-ray detectable and hence the duty cycle of activity, and (v)estimate the AGN bolometric luminosities. ================================================================================
PI: Harry Ferguson Proposal Title: The Deepest Chandra Fields in the Infrared: Making the Connection Between Normal Galaxies and AGN Abstract: We propose to use deep optical and near-infrared data on the HDF-N and CDF-S to: (a) push constraints on the redshift distribution and spectral-energy distributions of the x-ray sources to the deepest possible levels, (b) carry out a near-infrared search for optically unidentified x-ray sources, (c) test and constrain self-consistent models for the evolution from merger to starburst to AGN to bulge. The work we propose to carry out will be an essential part of characterizing the overall source population in these deepest images, and will lay the groundwork for further studies of stellar populations and dust-reprocessed radiation with SIRTF. ================================================================================
PI: Paul Nandra Proposal Title: The X-ray Emission of High Redshift Galaxies Abstract Deep optical surveys have revealed a population of star forming galaxies at high redshift. We propose to determine the X-ray properties of these galaxies out to z=3 in the Chandra deepest fields, by stacking of the known optical sources in redshift bins. This will give a measure of the star formation history of the universe relatively independent of extinction. We will also perform a census of AGN activity in these galaxies, allowing a direct comparison of stellar versus accretion power over the history of the X-ray universe. The data can be used to determine the importance of supernova heating and feedback in the formation of the first cosmic structures, and measure the X-ray fluence in the early universe, with implications both for structure formation and the epoch of reionization.
Last modified: 12/02/10
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