Results 1 to 10 of about 5,290 (158)

Ultraluminous Infrared Galaxies [PDF]

Symposium - International Astronomical Union, 1999
At luminosities above ~10^{11} L_sun, infrared galaxies become the dominant population of extragalactic objects in the local Universe (z < 0.5), being more numerous than optically selected starburst and Seyfert galaxies, and QSOs at comparable bolometric
BT Soifer, DB Sanders, DB Sanders, DB Sanders, DB Sanders, DB Sanders, DB Sanders, DL Clements, F Schweizer, GS Wright, J Kormendy, J Kormendy, J Magorrian, J Melnick, JA Surace, JA Surace, JC Mihos, JE Barnes, L Armus, NZ Scoville, NZ Scoville, PM Bryant, TM Heckman, TW Murphy   +23 more
core   +6 more sources

Mid Infrared Polarisation of Ultraluminous Infrared Galaxies [PDF]

Astronomy & Astrophysics, 2001
The mid infrared polarisation properties of four Ultraluminous Infrared Galaxies (ULIRGs) have been investigated by broad band filter observations with the ISOCAM instrument on board the Infrared Space Observatory (ISO).
A. Efstathiou, Antonucci, Antonucci, Barger, Carilli, Cesarsky, Clavel, Downes, Efstathiou, Efstathiou, Efstathiou, Genzel, Goldader, Gonatas, Granato, Greaves, Haas, Hall, Heisler, Hildebrand, Hiltner, Hughes, Jones, Kawara, Kessler, Koningl, Krolik, Krügel, Leach, Minchin, Novak, Ott, Pier, Puget, R. Siebenmorgen, Rigopoulou, Sanders, Sargent, Siebenmorgen, Siebenmorgen, Skinner, Smith, Smith, Soifer, Sopp, Veilleux, Ward-Thompson   +46 more
core   +5 more sources

Quasars and Ultraluminous Infrared Galaxies: At the Limit? [PDF]

The Astrophysical Journal, 1998
We have detected the host galaxies of 16 nearby, radio-quiet quasars using images obtained with the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS).
Cristiani S., G. H. Rieke, Haehnelt M. G., K. K. McLeod, Kormendy J., L. J. Storrie-Lombardi, Ronnback J., Sanders D. B., Soltan A., Taylor G. L.   +9 more
core   +9 more sources

The Molecular Interstellar Medium in Ultraluminous Infrared Galaxies [PDF]

The Astrophysical Journal, 1996
We present CO observations of a large sample of ultraluminous IR galaxies out to z = 0.3. Most of the galaxies are interacting, but not completed mergers. All but one have high CO(1-0) luminosities, log(Lco [K-km/s-pc^2]) = 9.92 +/- 0.12.
D. Downes, Hildebrand R. H., J. W. Barrett, Kollatschny W., Melnick J., P. M. Solomon, S. J. E. Radford   +6 more
core   +4 more sources

Starburst and AGN activity in ultraluminous infrared galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
(Abridged) We examine the power source of 41 local Ultraluminous Infrared Galaxies using archival infrared and optical photometry. We fit the observed Spectral Energy Distributions (SEDs) with starburst and AGN components; each component being drawn from
Afonso, J., Clements, D., Efstathiou, A., Farrah, D., Fox, M., Rowan-Robinson, M.   +5 more
core   +4 more sources

Imaging of Ultraluminous Infrared Galaxies in the Near-UV [PDF]

The Astronomical Journal, 2000
We present the first ground-based U' (3410 angstroms) images of Ultraluminous Infrared Galaxies (ULIGs). Strong U' emission (median total M_U' = -20.8) is seen in all systems and in some cases the extended tidal features (both the smooth stellar ...
Clements D. L., D. B. Sanders, de Grijp M. H. K., Guiderdoni B., Hogg D. W., Jason A. Surace, Meurer G., Rowan-Robinson M., Young S., Zheng Z.   +9 more
core   +6 more sources

The differential magnification of high-redshift ultraluminous infrared galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 1998
A class of extremely luminous high-redshift galaxies has recently been detected in unbiased submillimetre-wave surveys using the Submillimetre Common-User Bolometer Array (SCUBA) camera at the James Clerk Maxwell Telescope.
Blain, Andrew W.
core   +9 more sources

High Resolution Mid-Infrared Imaging of Ultraluminous Infrared Galaxies [PDF]

The Astronomical Journal, 1999
Observations of ultraluminous infrared galaxies (ULIRGs) with an achieved resolution approaching the diffraction limit in the mid-infrared from 8 - 25 $\mu$m using the Keck Telescopes are reported.
A. J. Weinberger, A. S. Evans, B. T. Soifer, Boksenberg A., E. E. Becklin, E. Egami, Elias H., G. Neugebauer, J. A. Surace, J. J. Condon, K. Matthews, M. Ressler, M. W. Werner, Martin J. M., N. Z. Scoville, Werner M. W.   +15 more
core   +8 more sources

Mid-infrared and optical spectroscopy of ultraluminous infrared galaxies: A comparison [PDF]

The Astrophysical Journal, 1999
New tools from Infrared Space Observatory (ISO) mid-infrared spectroscopy have recently become available to determine the power sources of dust-obscured ultraluminous infrared galaxies (ULIRGs).
Aussel H., Bergeron J., D. Lutz, Moorwood A. F. M., R. Genzel, Robinson A., S. Veilleux, Sanders D. B., Taniguchi Y., Young S.   +9 more
core   +4 more sources

Near-Infrared Spectra of Ultraluminous Infrared Galaxies [PDF]

The Astrophysical Journal, 1999
Near infrared spectra with resolution R ~ 1100 in the rest wavelength range 1.8-2.2 microns have been obtained for a complete sample of 33 ultraluminous infrared galaxies. Of the 33 objects observed, 2 show evidence of a central AGN through either a broad Paschen-alpha line or emission in the 1.963 micron fine structure of [Si VI].
Keith Matthews, Lee Armus, J. R. Kiger, J. R. Kiger, Thomas W. Murphy, B. T. Soifer   +5 more
openaire   +4 more sources