Multiwavelength energy distributions of ultraluminous IRAS galaxies - I. Submillimetre and X-ray observations

Details Multiwavelength energy distributions of ultraluminous IRAS galaxies - I. Submillimetre and X-ray observations Multiwavelength energy distributions of ultraluminous IRAS galaxies - I. Submillimetre and X-ray observations

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.278.1049r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 278, Issue 4, pp. 1049-1068.

Astronomy and Astrophysics

Astronomy

108

Galaxies: Active, Galaxies: Seyfert, Galaxies: Starburst, Radio Continuum: Galaxies, X-Rays: Galaxies

Scientific paper

We present photometric observations at 350, 450, 800 and 1100 μm of nine out of 10 ultraluminous IRAS galaxies from the BGS sample (Sanders et al.), carried out with the JCMT telescope, and X-ray observations of six of them, carried out with the ROSAT PSPC. Together with other published and archived data the multiwavelength spectral energy distributions for all the 10 galaxies of the sample, from radio out to the X-rays, are constructed and discussed. Submillimetre observations are consistent with a thermal origin of the energy output of these systems in almost all cases, and in particular are well fitted by the starburst model proposed by Rowan-Robinson & Efstathiou. The weak soft X-ray emission excludes the possibility of the objects being quasars with a modest line-of-sight reddening; however, the absorbing columns expected from CO measurements are enough to obliterate soft X-rays completely. There is evidence for two single-nucleus objects to be a Seyfert 1 (Mrk 231) and a Seyfert 2 (IRAS 05189) galaxy respectively, but even these objects are extremely X-ray-quiet. It is suggested that in most objects starburst activity rather than accretion on to a massive black hole is responsible for the tremendous amounts of energy released from infrared galaxies with luminosities L_FIR<~10^12 L_solar.

Affiliated with

Also associated with

No associations

Rating

Multiwavelength energy distributions of ultraluminous IRAS galaxies - I. Submillimetre and X-ray observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multiwavelength energy distributions of ultraluminous IRAS galaxies - I. Submillimetre and X-ray observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiwavelength energy distributions of ultraluminous IRAS galaxies - I. Submillimetre and X-ray observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-854904