Results 141 to 150 of about 73,764 (311)

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.
S. A. Eales, E. E. Becklin, K.-W. Hodapp, D. A. Simons, C. G. Wynn-Williams   +4 more
openaire   +1 more source

Hubble Ultra Deep Field-JD2: Mid-Infrared Evidence for a z ~ 2 Luminous Infrared Galaxy [PDF]

, 2007
The Hubble Ultra Deep Field source JD2 presented in Mobasher et al. is an unusual galaxy that is very faint at all wavelengths shortward of 1.1 μm. Photometric redshift fits to data between 0.4 and 8 μm yield a significant probability that it is an ...
R. Chary, H. Teplitz, M. Dickinson, D. Koo, É. Le Floc'h, D. Marcillac, C. Papovich, D. Stern   +7 more
semanticscholar   +1 more source

Unveiling the Distant Universe: Characterizing z ≥ 9 Galaxies in the First Epoch of COSMOS-Web

The Astrophysical Journal
We report the identification of 15 galaxy candidates at z ≥ 9 using the initial COSMOS-Web JWST observations over 77 arcmin ^2 through four Near Infrared Camera filters (F115W, F150W, F277W, and F444W) with an overlap with the Mid-Infrared Imager (F770W)
Maximilien Franco, Hollis B. Akins, Caitlin M. Casey, Steven L. Finkelstein, Marko Shuntov, Katherine Chworowsky, Andreas L. Faisst, Seiji Fujimoto, Olivier Ilbert, Anton M. Koekemoer, Daizhong Liu, Christopher C. Lovell, Claudia Maraston, Henry Joy McCracken, Jed McKinney, Brant E. Robertson, Micaela B. Bagley, Jaclyn B. Champagne, Olivia R. Cooper, Xuheng Ding, Nicole E. Drakos, Andrea Enia, Steven Gillman, Ghassem Gozaliasl, Santosh Harish, Christopher C. Hayward, Michaela Hirschmann, Shuowen Jin, Jeyhan S. Kartaltepe, Vasily Kokorev, Clotilde Laigle, Arianna S. Long, Georgios Magdis, Guillaume Mahler, Crystal L. Martin, Richard Massey, Bahram Mobasher, Louise Paquereau, Alvio Renzini, Jason Rhodes, R. Michael Rich, Kartik Sheth, John D. Silverman, Martin Sparre, Margherita Talia, Benny Trakhtenbrot, Francesco Valentino, Aswin P. Vijayan, Stephen M. Wilkins, Lilan Yang, Jorge A. Zavala   +50 more
doaj   +1 more source

The essential signature of a massive starburst in a distant galaxy

, 2003
Observations of carbon monoxide (CO) emission in high redshift (z>2) galaxies indicate the presence of large amounts of molecular gas. Many of these galaxies contain an active galactic nucleus (AGN) powered by accretion of gas onto a supermassive black ...
AA Penzias, C Carilli, C. Carilli, D Downes, GL Granato, J-P Kneib, M. Guelin, P. Solomon, P. Vanden Bout, PM Solomon, PM Solomon, PM Solomon, R Barvainis, R Barvainis, R Plume, S Venturini   +15 more
core   +1 more source

Adaptive optics imaging and optical spectroscopy of a multiple merger in a luminous infrared galaxy [PDF]

, 2007
We present near-infrared (NIR) adaptive optics imaging obtained with VLT/NACO and optical spectroscopy from the Southern African Large Telescope of a luminous IR galaxy (LIRG) IRAS 19115-2124.
Petri Väisänen, S. Mattila, S. Mattila, A. Kniazev, A. Adamo, A. Efstathiou, Duncan Farrah, Peter H. Johansson, G. Östlin, D. Buckley, E. Burgh, L. Crause, Y. Hashimoto, P. Lira, N. Loaring, K. Nordsieck, E. Romero-Colmenero, S. D. Ryder, M. Still, A. Zijlstra   +19 more
semanticscholar   +1 more source

On the Very Bright Dropouts Selected Using the James Webb Space Telescope NIRCam Instrument

The Astrophysical Journal
The selection of candidate high-redshift galaxies using the dropout technique targeting the Lyman-break signature sometimes yields very bright objects that are too luminous to be easily explained if they are indeed at the expected redshifts.
Bangzheng Sun, Haojing Yan
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

A multiwavelength approach to the SFR estimation in galaxies at intermediate redshifts [PDF]

, 2002
We use a sample of 7 starburst galaxies at intermediate redshifts (z ~ 0.4 and z ~ 0.8) with observations ranging from the observed ultraviolet to 1.4 GHz, to compare the star formation rate (SFR) estimators which are used in the different wavelength ...
A. C. Phillips, Aussel H., Bouchet P., C. N. A. Willmer, Chmielewski Y., D. C. Koo, D. Elbaz, Elbaz D., Groth E. J., Howarth I. D., J. Gallego, Lagache G., Lagache G., Laurent O., Madau P., Mirabel I. F., Moorwood A. F. M., N. Cardiel, Pagel B. E. J., Prevot M. L., Puget J.-L., R. P. Schiavon, Rhodes J., Rousselot P., Rowan-Robinson M., Seaton M. J., Stevenson C. C.   +26 more
core   +4 more sources

Radio Detection of Supernova 2004ip in the Circumnuclear Region of the Luminous Infrared Galaxy IRAS 18293–3413 [PDF]

, 2007
We report a radio detection of supernova SN 2004ip in the circumnuclear region of the luminous infrared galaxy IRAS 18293-3413 , using Very Large Array (VLA) observations at 8.4 GHz on 2007 June 11.
M. Pérez-Torres, Seppo Mattila, Seppo Mattila, A. Alberdi, L. Colina, J. Torrelles, P. Vaisanen, Stuart D Ryder, N. Panagia, N. Panagia, A. S. Wilson   +10 more
semanticscholar   +1 more source

Quantification of the Age Dependence of Mid-infrared Star Formation Rate Indicators

The Astrophysical Journal
We combine James Webb Space Telescope images of the nearby galaxy NGC 5194 in the hydrogen recombination line Pa α (1.8756 μ m) from the Cycle 1 program JWST-FEAST with 21 μ m dust continuum images from the Cycle 2 Treasury program JWGT to quantify the ...
Daniela Calzetti, Robert C. Kennicutt, Angela Adamo, Karin Sandstrom, Daniel A. Dale, Bruce Elmegreen, John S. Gallagher, Benjamin Gregg, Varun Bajaj, Torsten Böker, Giacomo Bortolini, Martha Boyer, Matteo Correnti, Ilse De Looze, Bruce T. Draine, Ana Duarte-Cabral, Helena Faustino Vieira, Kathryn Grasha, L. K. Hunt, Kelsey E. Johnson, Ralf S. Klessen, Mark R. Krumholz, Thomas S.-Y. Lai, Drew Lapeer, Sean T. Linden, Matteo Messa, Göran Östlin, Alex Pedrini, Mònica Relaño, Elena Sabbi, Eva Schinnerer, Evan Skillman, Linda J. Smith, Monica Tosi, Fabian Walter, Tony D. Weinbeck   +35 more
doaj   +1 more source