A dataset provided by the European Space Agency

Name OT2_rmcmahon_1
Title Herschel observations of the most distant known quasars
URL

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DOI https://doi.org/10.5270/esa-ejc5ao6
Author mcmahon, r.
Description Understanding the formation and evolution of the first quasars, their
supermassive black holes and host galaxies is one of the most
important goals of both observational and theoretical astrophysics.
In the last decade there has been immense progress in the discovery
and study of z>6 quasars but since the discovery of SDSS J1148+5251
with z=6.42 by Fan et al(2003) almost a decade ago no quasar has been
discovered with z>6.5. Recently, using data from the UKIDSS survey we
have discovered a bright (K[Vega]=17.7) quasar ULAS J1120+0641
(Mortlock et al, 2011) which is the most distant quasar currently
known at z=7.085, smashing the previous record of z=6.44 by a large
margin. Furthermore, in the last few months, using data from the ESO
VISTA public surveys, we have discovered three more quasars at
z>6.5, with similar rest frame UV luminosity as ULAS J1120+0641 and
redshifts of z=6.6, 6.8 and 6.9 respectively. Observations with the
Plateu de Bure Interferometer of the z=7.085 quasar ULAS J1120+0641
have already revealed a significant detection of the [CII] 158micron
cooling line which is the dominant interstellar medium (ISM) gas
cooling line in star-forming galaxies confirming the presence of an
ultraluminous star-forming galaxy associated with this quasar. In this
proposal we shall carry out PACS and SPIRE photometry in the
wavelength range 100-500microns corresponding to 12-60microns in the
rest frame in this sample of four z>6.5 quasars with the goal of
measuring the shape and luminosity of the FIR continuum in these
primeval objects. These measurements will provide unique constaints on
the star-formation rate, dust mass and dust temperature of the
earliest massive star-forming galaxies.
Publication ALMA 200 pc Imaging of a z 7 Quasar Reveals a Compact, Disk-like Host Galaxy . Walter Fabian et al. . The Astrophysical Journal . null . null . 2022ApJ...927...21W ,
Instrument PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_small
Temporal Coverage 2012-06-09T01:25:19Z/2013-01-03T11:57:45Z
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 2013-07-03T11:43:26Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, mcmahon, r., 2013, OT2_rmcmahon_1, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-ejc5ao6