A dataset provided by the European Space Agency

Name PQ_1
Title MIR AND FIR PHOTOMETRY OF HIGH-REDSHIFT QSOS PART 1 DUST IN HIGH-REDSHIFT QSOS PART 1
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=778004080
DOI https://doi.org/10.5270/esa-nn6wx37
Author KAWARA, KIMIAKI
Description in order to measure the thermal emission from high-redshift z > 3 qsos, we are proposing to do photometry by using isocam and pht-c at the lw2 (6.7 um), lw10 (11.5 um) c_90 (90 um), and c_160 (160 um) band. from this observation, the mass of dust in a circumnuclear region and a disk could be estimated. if the formation of galaxies took more than 1 gyr as suggested by a star formation rate measured in several high-redshift radio-quiet galaxies, galaxies were still forming at z = 4. hence, it is natural to search for the thermal mission from dust in high-redshift (young) qsos, and the mass of dust would provide a clue to star formation at high redshifts where dust formed through supernovae and destryed by shocks and intense radiation. our primary goal is to detect qsos at the lw2 (1.3 um in the rest frame at z =4) and c_90 (18 um at z = 4) bands. the c_90/lw2 luminosity ratio will be used as an index of emission from dust. the sample consists of 27 - 30 qsos with z > 3 (27 qsos for spring and 30 qsos for autumn). most of them are optically selected, ne_8band so probably radio-quiet qsos, the infrared continuum of which would be dominated by the thermal emission from dust as in the case of low-redshift pg qsos.
Instrument CAM01 , PHT22
Temporal Coverage 1996-05-04T10:55:58Z/1998-01-07T03:15:16Z
Version 1.0
Mission Description The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
Creator Contact https://support.cosmos.esa.int/iso/
Date Published 1999-03-19T00:00:00Z
Last Update 2026-07-09
Keywords Infrared Space Observatory data, ESA ISO mission dataset, ISO infrared observations, mid-infrared astronomy data, far-infrared spectroscopy dataset, ISOCAM imaging data, ISOPHOT photometry data, SWS short wavelength spectrometer data, LWS long wavelength spectrometer data, infrared spectral line observations, infrared imaging survey data, dust emission infrared observations, star formation infrared dataset, interstellar medium spectroscopy data, polycyclic aromatic hydrocarbons PAH features data, active galactic nuclei infrared observations, circumstellar envelope infrared data, planetary nebula infrared spectroscopy, extragalactic infrared survey data, calibrated ISO data products, FITS files infrared astronomy, spectral energy distribution infrared data, continuum photometry dataset, infrared spectral cubes, flux-calibrated infrared maps, ESA ISO Data Archive, legacy infrared space mission dataset
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, KAWARA et al., 1999, 'MIR AND FIR PHOTOMETRY OF HIGH-REDSHIFT QSOS PART 1 DUST IN HIGH-REDSHIFT QSOS PART 1', 1.0, European Space Agency, https://doi.org/10.5270/esa-nn6wx37
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.