Results 1 to 10 of about 60,149 (264)

Obscured and Unobscured Active Galactic Nuclei in the Spitzer Space Telescope First Look Survey [PDF]

, 2004
Selection of active galactic nuclei (AGNs) in the infrared facilitates the discovery of AGNs whose optical emission is extinguished by dust. In this paper, we use the Spitzer Space Telescope First Look Survey (FLS) to assess the fraction of AGNs with mid-
Mark Lacy, Lisa J. Storrie‐Lombardi, Anna Sajina, P. N. Appleton, L. Armus, S. C. Chapman, P. I. Choi, D. Fadda, Fan Fang, D. T. Frayer, I. Heinrichsen, G. Hélou, Myungshin Im, F. Marleau, Frank J. Masci, D. L. Shupe, B. T. Soifer, J. Surace, Harry I. Teplitz, Gillian Wilson, Lin Yan   +20 more
openalex   +3 more sources

Evidence of the Amino Acids Tyrosine and Phenylalanine in the Interstellar Material of IC348 in Perseus [PDF]

Life
We employed data from the Spitzer Space Telescope to investigate the presence of the aromatic amino acids tyrosine and phenylalanine in the interstellar gas of the young star cluster IC 348.
Susana Iglesias-Groth, Martina Marín Dobrincic, Antonio Pérez Garrido, Carlos Gutierrez   +3 more
doaj   +2 more sources

ASpitzer Space TelescopeStudy of Disks in the Young σ Orionis Cluster [PDF]

, 2007
We report new Spitzer Space Telescope observations, using the IRAC and MIPS instruments, of the young (~3 Myr) σ Orionis cluster. We identify 336 stars as members of the cluster, using optical and near-infrared color-magnitude diagrams.
Jesús Hernández, Lee Hartmann, S. T. Megeath, Robert Gutermuth, James Muzerolle, Nuria Calvet, A. K. Vivas, César Briceño, Shadab Alam, J. R. Stauffer, Erick T. Young, G. G. Fazio   +11 more
openalex   +3 more sources

Spectroscopic Redshifts to z > 2 for Optically Obscured Sources Discovered with the Spitzer Space Telescope [PDF]

, 2005
We have surveyed a field covering 9.0 deg2 within the NOAO Deep Wide-Field Survey region in Bootes with the Multiband Imaging Photometer on the Spitzer Space Telescope (SST) to a limiting 24 μm flux density of 0.3 mJy. Thirty-one sources from this survey
J. R. Houck, B. T. Soifer, D. W. Weedman, S. J. U. Higdon, James L. Higdon, T. Herter, M. J. I. Brown, Arjun Dey, Buell T. Jannuzi, E. Le Floc’h, M. Rieke, L. Armus, V. Charmandaris, Bernhard R. Brandl, Harry I. Teplitz   +14 more
openalex   +3 more sources

The Infrared Array Camera (IRAC) for the Spitzer Space Telescope [PDF]

, 2004
The Infrared Array Camera (IRAC) is one of three focal plane instruments on the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broadband images at 3.6, 4.5, 5.8, and 8.0 μm. Two nearly adjacent 5.′2 × 5.′2 fields of view
G. G. Fazio, Joseph L. Hora, Shadab Alam, M. L. N. Ashby, P. Barmby, L. K. Deutsch, Jiasheng Huang, Sandra Kleiner, M. Marengo, S. T. Megeath, Gary J. Melnick, M. A. Pahre, B. M. Patten, J. J. Polizotti, H. A. Smith, Rebecca S. Taylor, Z. Wang, S. P. Willner, W. F. Hoffmann, J. L. Pipher, W. J. Forrest, C. W. McMurty, Craig R. McCreight, Mark E. McKelvey, Robert E. McMurray, David Koch, S. H. Moseley, Richard G. Arendt, John E. Mentzell, Catherine T. Marx, Patricia A. Losch, P. Mayman, William L. Eichhorn, Danny J. Krebs, M Jhabvala, D. Y. Gezari, D. J. Fixsen, J. R. Flores, Kamdin B. Shakoorzadeh, Ray Jungo, Claef Hakun, Lois G. Workman, Gabriel Karpati, Robert A. Kichak, R. M. Whitley, Steven D. Mann, E. V. Tollestrup, Peter Eisenhardt, Daniel Stern, Varoujan Gorjian, B. Bhattacharya, S. Carey, B. Nelson, W. Glaccum, Mark Lacy, Patrick Lowrance, Seppo Laine, W. T. Reach, John Stauffer, J. Surace, G. Wilson, E. L. Wright, Alan W. Hoffman, George Domingo, Martin Cohen   +64 more
openalex   +3 more sources

A HIDDEN POPULATION OF MASSIVE STARS WITH CIRCUMSTELLAR SHELLS DISCOVERED WITH THESPITZER SPACE TELESCOPE [PDF]

, 2010
We have discovered a large number of circular and elliptical shells at 24 μm around luminous central sources with MIPS on board the Spitzer Space Telescope.
Stefanie Wachter, Jon C. Mauerhan, Schuyler D. Van Dyk, D. W. Hoard, S. Kafka, P. Morris   +5 more
openalex   +3 more sources

Spitzer Space Telescope observations of the Carina nebula: the steady march of feedback-driven star formation [PDF]

, 2010
We report the first results of imaging the Carina Nebula (NGC 3372) with the Infrared Array Camera (IRAC) onboard the Spitzer Space Telescope, providing a photometry catalog of over 44,000 point sources as well as a catalog of over 900 candidate young ...
Nathan Smith, Matthew S. Povich, Barbara A. Whitney, Ed Churchwell, Brian L. Babler, Marilyn R. Meade, John Bally, Robert D. Gehrz, Thomas P. Robitaille, Keivan G. Stassun   +9 more
openalex   +3 more sources

Discovery of a Large ∼200 kpc Gaseous Nebula atz≈ 2.7 with theSpitzer Space Telescope [PDF]

, 2005
We report the discovery of a very large, spatially extended Lyα-emitting nebula at z = 2.656 associated with a luminous mid-infrared source. The bright mid-infrared source (F24 μm = 0.86 mJy) was first detected in observations made using the Spitzer ...
Arjun Dey, Chao Bian, B. T. Soifer, Kate Brand, M. J. I. Brown, Frederic H. Chaffee, E. Le Floc’h, Grant M. Hill, J. R. Houck, Buell T. Jannuzi, Marcia Rieke, D. W. Weedman, M. Brodwin, Peter Eisenhardt   +13 more
openalex   +3 more sources

The Infrared Array Camera Component of the Spitzer Space Telescope Extragalactic First Look Survey [PDF]

, 2005
We present Infrared Array Camera (IRAC) data and source catalogs from the Spitzer Space Telescope Extragalactic First Look Survey. The data were taken in four broad bands centered at nominal wavelengths of 3.6, 4.5, 5.8, and 8.0 μm.
Mark Lacy, G. W. Wilson, Frank J. Masci, Lisa J. Storrie‐Lombardi, P. N. Appleton, L. Armus, S. C. Chapman, P. I. Choi, D. Fadda, Fan Fang, D. T. Frayer, I. Heinrichsen, G. Hélou, Myungshin Im, Seppo Laine, F. Marleau, D. L. Shupe, B. T. Soifer, G. Squires, J. Surace, Harry I. Teplitz, Lin Yan   +21 more
openalex   +3 more sources

Number Counts at 3 μm < λ < 10 μm from the Spitzer Space Telescope [PDF]

, 2004
Infrared source counts at wavelengths 3 μm < λ < 10 μm cover more than 10 mag in source brightness, reach 4 orders of magnitude in surface density, and reach an integrated surface density of 105 sources deg-2.
G. G. Fazio, M. L. N. Ashby, P. Barmby, Joseph L. Hora, J.‐S. Huang, M. A. Pahre, Z. Wang, S. P. Willner, Richard G. Arendt, S. H. Moseley, M. Brodwin, Peter Eisenhardt, Daniel Stern, E. V. Tollestrup, E. L. Wright   +14 more
openalex   +3 more sources