A dataset provided by the European Space Agency

Name OT1_emiddelb_1
Title Constraining the nature of high redshift infrared-faint radio sources
URL

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DOI https://doi.org/10.5270/esa-zq6hu7l
Author middelberg, e.
Description One of the most puzzling discoveries of the Australia Telescope Large Area Survey (ATLAS) is the population of infrared-faint radio sources. While relatively bright at 1.4 and 2.3 GHz (10-20 mJy) these sources are neither seen on optical (r=25mag) nor on near- and mid-infrared (3.6-70 micron) Spitzer maps. Existing multiwavelength data, e.g. from SWIRE, suggests that these sources are high-redshift (2<z<5) radio-loud AGN, suffering from heavy obscuration of their optical/NIR emission. Therefore, powerful FIR re-emission is expected, but the FIR-submm maps obtained with Herschel (in the HERMES key project) are too shallow (50 mJy at 160 micron, 30 mJy at 250 micron) to detect these sources. If they are obscured high-z analogues of local templates like 3C48 the predicted 100-500 micron flux density is about 20 mJy, well detectable with Herschel. Therefore, we propose deep PACS 100+160 micron and SPIRE 250+350+500 micron maps of six representative sources, in order to determine the nature of these infrared-faint radio sources. This will provide crucial new insights on those radio-loud high redshift AGN, which cover a lower flux/luminosity range and are therefore more characteristic than the few extremely luminous high-z radio galaxies studied so far.
Publication Infrared-faint radio sources remain undetected at far-infrared wavelengths. Deep photometric observations using the Herschel Space Observatory . Herzog A. et al. . Astronomy & Astrophysics, Volume 580, id.A7, 15 pp. . 580 . 10.1051\/0004-6361\/201425405 . 2015A&A...580A...7H ,
Instrument PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_small
Temporal Coverage 2011-07-18T00:03:38Z/2012-01-28T00:51:56Z
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 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2012-07-28T00:39:55Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, middelberg, e., 2012, OT1_emiddelb_1, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-zq6hu7l