NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-11 T04:12:58 PST
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For refcode 2000A&A...354..453H:
Retrieve 17 NED objects in this reference.
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2000A&A...354..453H Dust in PG quasars as seen by ISO. HAAS M., MUELLER S.A.H., CHINI R., MEISENHEIMER K., KLAAS U., LEMKE D., KREYSA E., CAMENZIND M. Received 18 August 1999/Accepted 9 December 1999 Abstract: Infrared to millimeter spectral energy distributions (SEDs) have been obtained for a random sample of 17 Palomar Green quasars. The observations were carried out between 4.8 and 200 microns with ISO and supplemented for ten sources with IRAM at 1.3mm. Eight sources were detected in the far infrared for the first time. The SEDs provide evidence for considerable dust emission and do not support the existence of dust- free, naked quasars. The SEDs resemble those of warm ultraluminous infrared galaxies (ULIRGs). The SEDs show a variety of shapes (power-law, mid- infrared dominated, and far-infrared dominated), suggesting the influence of different heating mechanisms. The mid- and far-infrared luminosities are correlated, suggesting a dependence between the heating mechanisms. The role of AGNs and starbursts for the dust heating is discussed, as well as the link between general ULIRGs and dust-enshrouded quasars. Key words: galaxies: fundamental parameters - galaxies: photometry - galaxies: quasars: general - infrared: galaxies
Retrieve 17 NED objects in this reference.
Please click here for ADS abstract

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