Results 131 to 140 of about 200,741 (275)

Comparison of dust-to-gas ratios in luminous, ultraluminous, and hyperluminous infrared galaxies [PDF]

, 2007
The dust-to-gas ratios in three different samples of luminous, ultraluminous, and hyperluminous infrared galaxies are calculated by modelling their radio to soft X-ray spectral energy distributions using composite models which account for the photoionizing radiation from HII regions, starbursts, or AGNs, and for shocks.
arxiv   +1 more source

Molecular Gas and Nuclear Activity in Radio Galaxies Detected by IRAS

, 2005
This paper reports the latest results from a millimeter-wave (CO) spectroscopic survey of IRAS-detected radio galaxies with L_1.4GHz ~ 10^23-28 W/Hz in the redshift range z ~ 0.02-0.15.
A. S. Evans, Akujor C. E., D. B. Sanders, D. T. Frayer, Elfhag T., Fanaroff B. L., J. A. Surace, J. M. Mazzarella, K. Iwasawa, Moshir M., Reuter H.-P., Strong A. W., Vignati P., Wiklind T.   +13 more
core   +1 more source

Detection of CO(J=1-0) Emission from Barred Spiral Galaxies at z~0.1 [PDF]

, 2011
We present the results of CO (J=1-0) observations towards nine barred spiral galaxies at z=0.08-0.25 using the 45-m telescope at Nobeyama Radio Observatory (NRO). This survey is the first one specialized for barred spiral galaxies in this redshift range.
arxiv   +1 more source

JADES: Resolving the Stellar Component and Filamentary Overdense Environment of Hubble Space Telescope (HST)-dark Submillimeter Galaxy HDF850.1 at z = 5.18

The Astrophysical Journal
HDF850.1 is the brightest submillimeter galaxy (SMG) in the Hubble Deep Field. It is known as a heavily dust-obscured star-forming galaxy embedded in an overdense environment at z = 5.18.
Fengwu Sun, Jakob M. Helton, Eiichi Egami, Kevin N. Hainline, George H. Rieke, Christopher N. A. Willmer, Daniel J. Eisenstein, Benjamin D. Johnson, Marcia J. Rieke, Brant Robertson, Sandro Tacchella, Stacey Alberts, William M. Baker, Rachana Bhatawdekar, Kristan Boyett, Andrew J. Bunker, Stephane Charlot, Zuyi Chen, Jacopo Chevallard, Emma Curtis-Lake, A. Lola Danhaive, Christa DeCoursey, Zhiyuan Ji, Jianwei Lyu, Roberto Maiolino, Wiphu Rujopakarn, Lester Sandles, Irene Shivaei, Hannah Übler, Chris Willott, Joris Witstok   +30 more
doaj   +1 more source

Spitzer/IRS Mapping of Local Luminous Infrared Galaxies [PDF]

, 2010
We present results of our program Spitzer/IRS Mapping of local Luminous Infrared Galaxies (LIRGs). The maps cover the central 20"x20" or 30"x 30" regions of the galaxies, and use all four IRS modules to cover the full 5-38 microns spectral range. We have built spectral maps of the main mid-IR emission lines, continuum and PAH features, and extracted 1D
Almudena Alonso-Herrero, Almudena Alonso-Herrero, Miguel Pereira-Santaella, Miguel Pereira-Santaella, Luis Colina, Luis Colina, George H. Rieke, George H. Rieke   +7 more
openaire   +4 more sources

The subarcsecond infrared structures at the centers of infrared-luminous galaxies

The Astrophysical Journal, 1990
This paper presents 1.6-2.2-micron imaging observations of the centers of nine galaxies with high 60-100-micron luminosities. Eight of the nine galaxies contain central 2.2-micron sources that are larger than the point spread function, which typically had a size (FWHM) of 1.0 arcsec. The typical physical size of the 2.2-micron sources is about 0.5 kpc.
C. G. Wynn-Williams, E. E. Becklin, Douglas A. Simons, Stephen Anthony Eales, Klaus W. Hodapp   +4 more
openaire   +2 more sources

PMAS Optical Integral Field Spectroscopy of Luminous Infrared Galaxies. II.-- Spatially resolved stellar populations and excitation conditions

, 2010
The general properties of luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) in the local universe are well known since large samples of these objects have been the subject of numerous spectroscopic works.
A. Alonso-Herrero, A. Monreal-Ibero, Allen, Alloin, Alonso-Herrero, Alonso-Herrero, Alonso-Herrero, Alonso-Herrero, Armus, Arribas, Arribas, Arribas, Asplund, Baldwin, Balogh, Bedregal, Bingham, Blanc, Bruzual, Bushouse, Calzetti, Calzetti, Calzetti, Caputi, Chen, Cid Fernandes, Colina, Colina, Cox, Davies, Delgado, Dopita, Díaz-Santos, Gallazzi, Gao, García-Lorenzo, García-Marín, García-Marín, García-Marín, Goldader, González Delgado, Graciá-Carpio, Graciá-Carpio, Haffner, Hammer, Heckman, Heckman, Hummer, J. Rodríguez Zaurín, Kauffmann, Kauffmann, Kauffmann, Keel, Kehrig, Kennicutt, Kennicutt, Kewley, Kewley, Kim, Kim, L. Colina, Le Fèvre, Lehnert, Leitherer, Lípari, Lípari, M. García-Marín, Madsen, Marcillac, Miller, Monreal-Ibero, Monreal-Ibero, Monreal-Ibero, Moustakas, Moustakas, Oey, Pereira-Santaella, Pettini, Poggianti, Rand, Relaño, Reunanen, Reunanen, Rigopoulou, Robinson, Rodríguez Zaurín, Rodríguez Zaurín, Roth, Rupke, S. Arribas, Salpeter, Sanders, Sanders, Sanders, Sanders, Sarzi, Scoville, Smith, Stoklasová, Tadhunter, Thilker, Veilleux, Veilleux, Veilleux, Veilleux, Vázquez, Wang, Wang, Wood, Worthey, Wu, Yuan, Zurita   +112 more
core   +1 more source

Building on the Archives: Connecting the CN/CO Intensity Ratio with Global Galaxy Properties in Nearby U/LIRGs

The Astrophysical Journal
We use the CN/CO intensity ratio to obtain the dense gas fraction, f _dense , for a sample of 16 ultraluminous and luminous infrared (IR) galaxies and compare f _dense with a suite of global galaxy properties.
Blake Ledger, Christine D. Wilson, Osvald Klimi, Núria Torres-Albà, Toshiki Saito   +4 more
doaj   +1 more source

Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA

The Astrophysical Journal
We present the CO(1–0) maps of 28 infrared-bright galaxies from the Great Observatories All-Sky Luminous Infrared Galaxy Survey (GOALS) taken with the Combined Array for Research in Millimeter Astronomy (CARMA).
Katherine Alatalo, Andreea O. Petric, Lauranne Lanz, Kate Rowlands, Vivian U, Kirsten L. Larson, Lee Armus, Loreto Barcos-Muñoz, Aaron S. Evans, Jin Koda, Yuanze Luo, Anne M. Medling, Kristina E. Nyland, Justin A. Otter, Pallavi Patil, Fernando Peñaloza, Diane Salim, David B. Sanders, Elizaveta Sazonova, Maya Skarbinski, Yiqing Song, Ezequiel Treister, C. Meg Urry   +22 more
doaj   +1 more source

Luminosities of Barred and Unbarred S0 Galaxies

, 2012
Lenticular galaxies with M_B < -21.5 are almost exclusively unbarred, whereas both barred and unbarred objects occur at fainter luminosity levels. This effect is observed both for objects classified in blue light, and for those that were classified in ...
Buta, de Vaucouleurs, de Vaucouleurs, Hubble, Sales, Sandage, Sandage, Sandage, Sidney van den Bergh, van den Bergh   +9 more
core   +1 more source