Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties

Details Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...321..233e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 321, Oct. 1, 1987, p. 233-250.

Astronomy and Astrophysics

Astronomy

120

Astronomical Spectroscopy, Broadband, Infrared Spectra, Millimeter Waves, Seyfert Galaxies, Spectral Bands, Emission Spectra, Infrared Astronomy Satellite, Nonthermal Radiation, Quasars, Spaceborne Astronomy, Star Formation, Thermal Emission

Scientific paper

IR and mm observations of the 48 Seyfert 1 and 2 galaxies (SG1s and SG2s) of the CfA sample (Huchra and Berg, 1987) are reported. Data obtained (1) in the NIR using the 1.55-m reflector at Stewart Observatory and the 3-m IRTF during 1984-1986, (2) in the FIR with IRAS, and (3) at 1.3 mm using the 12-m NRAO telescope at KPNO in June 1984 are presented in extensive tables and graphs and characterized in detail. None of the objects was detected at 1.3 mm, and the IR spectra of the SG2s are found to be significantly steeper (indicating thermal emission) than those of SG1s and QSOs (nonthermal emission). Turnover in the IR emission below 100 microns (in half of the objects detected at three or more IRAS wavelengths) is shown to be consistent with an accretion disk in dust-free SG1s and with unusually warm (35-65 K) dust in SG2s. It is inferred that a 60-100-micron cool excess is masking turnover in the other SGs, so that a general association of SG nuclei with strong star formation can be confirmed.

Affiliated with

Also associated with

No associations

Rating

Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties 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 Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broad-band properties of the CfA Seyfert Galaxies. II - Infrared to millimeter properties will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1773515