using the detector arrays of the isocam and isophot, we propose to detect and accurately measure the mid and far-infrared emission (at 12, 70, 105, 135 and 160 microns) from a carefully chosen sample of 35 elliptical galaxies with an intermediate radio luminosity and located mostly at small redshifts ( z < 0.1). this sample of lobe-dominated radio sources has been derived in an unbiased manner from two radio/optical flux limited complete samples of bright elliptical galaxies, for which a variety of radio/optical data are already available. the salient selection criterion adopted by us is that the immediate surroundings of each galaxy (within a 1. radius) are devoid of any objects that could potentially contaminate the background estimate on the isophot and isocam images, thus rendering the mfir photometry of these rather faint objects uncertain. for this, we have examined the fields of each member of the parent sample, employing the red ccd images taken by us. we estimate a very high detection rate for our sample with iso in all the 5 bands (compared to under 20% that has been possible with the iras). thus, these observations should fill the crucial gap between radio-quiet and radio powerful ellipticals and enable, for the first time, a systematic investigation of the connection between the radio and mid/far infrared emission from active ellipticals.
Instrument
CAM01 , PHT22
Temporal Coverage
1996-04-20T11:38:54Z/1998-02-12T02:36:09Z
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.
European Space Agency, KRISHNA et al., 1999, 'MID AND FAR-INFRARED PROPERTIES OF NEARBY RADIO-LOUD ELLIPTICALS RADIO-INFRARED CONNECTION IN BRIGHT ACTIVE ELLIPTICALS', 1.0, European Space Agency, https://doi.org/10.5270/esa-pphi55f
