Far Infrared Extragalactic Background Radiation: Source Counts with ISOPHOT
نویسندگان
چکیده
منابع مشابه
Far infrared extragalactic background radiation: I. Source counts with ISOPHOT
As a part of the ISOPHOT CIRB (Cosmic Infrared Background Radiation) project we have searched for point-like sources in eight fields mapped at two or three wavelengths between 90μm and 180μm. Most of the 55 sources detected are suspected to be extragalactic and cannot be associated with previously known objects. It is probable, also from the far-infrared (FIR) spectral energy distributions, tha...
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We present here the results of a deep survey in a 0.4 deg2 blank field in Selected Area 57 conducted with the ISOPHOT instrument aboard ESAs Infrared Space Observatory (ISO1) at both 60 μm and 90 μm. The resulting sky maps have a spatial resolution of 15 × 23 arcsrc2 per pixel which is much higher than the 90 × 90 arcsec2 pixels of the IRAS All Sky Survey. We describe the main instrumental effe...
متن کاملCosmic Infrared Background: Isophot Fir Source Counts at 90, 150 and 180 Μm
Far-infrared maps obtained with ISOPHOT have been searched for point-like sources. The majority of the 55 sources is believed to be extragalactic and in most cases no previously known sources can be associated with them. Based on the far-infrared spectral energy distributions it is likely that dust-enshrouded, distant galaxies form a significant fraction of the sources. We estimate the number d...
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Context. The cosmic infrared background (CIRB) consists mainly of the integrated light of distant galaxies. In the far-infrared the current estimates of its surface brightness are based on the measurements of the COBE satellite. Independent confirmation of these results is still needed from other instruments. Aims. In this paper we derive estimates of the far-infrared CIRB using measurements ma...
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Asteroids are used as far-IR calibrators for the imaging photopolarimeter ISOPHOT on board the Infrared Space Observatory ISO. For the 10 selected objects we compiled a large uniform database1 of 678 individual observations, ranging from 7–2 000μm. Applying a new thermophysical model to the observations we derived thermal properties of the selected asteroids, based on spin-vector solutions, dir...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2001
ISSN: 0074-1809
DOI: 10.1017/s0074180900226144