Results 51 to 60 of about 60,149 (264)

Mid-Infrared Spectra of Classical AGNs Observed with the Spitzer Space Telescope [PDF]

, 2005
Full low-resolution (65 < R < 130) and high-resolution (R ~ 600) spectra between 5 and 37 μm obtained with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope are presented for eight classical active galactic nuclei (AGNs) that have been ...
D. Weedman, L. Hao, S. Higdon, D. Devost, Yanling Wu, V. Charmandaris, B. Brandl, E. Bass, J. Houck   +8 more
semanticscholar   +1 more source

JWST Imaging of the Cartwheel Galaxy Reveals Dust Associated with SN 2021afdx

The Astrophysical Journal Letters, 2023
We present near- and mid-infrared (0.9–18 μ m) photometry of supernova (SN) 2021afdx, which was imaged serendipitously with the James Webb Space Telescope (JWST) as part of its Early Release Observations of the Cartwheel Galaxy.
Griffin Hosseinzadeh, David J. Sand, Jacob E. Jencson, Jennifer E. Andrews, Irene Shivaei, K. Azalee Bostroem, Stefano Valenti, Tamás Szalai, Jamison Burke, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran   +14 more
doaj   +1 more source

A “Starless” Core that Isn't: Detection of a Source in the L1014 Dense Core with the Spitzer Space Telescope [PDF]

, 2004
We present observations of L1014, a dense core in the Cygnus region previously thought to be starless, but data from the Spitzer Space Telescope show the presence of an embedded source. We propose a model for this source that includes a cold core, heated
C. Young, J. Jørgensen, Y. Shirley, J. Kauffmann, T. Huard, S. Lai, C. Lee, A. Crapsi, T. Bourke, C. Dullemond, T. Brooke, A. Porras, W. Spiesman, L. Allen, G. Blake, N. Evans II, P. Harvey, D. Koerner, L. Mundy, P. Myers, D. Padgett, A. Sargent, K. Stapelfeldt, E. V. van Dishoeck, F. Bertoldi, N. Chapman, L. Cieza, C. Devries, N. Ridge, Z. Wahhaj   +29 more
semanticscholar   +1 more source

Novel Deep Level Image State Ensemble Enhancement Method for M87 Imaging

Applied Sciences, 2020
Standard spatial domain filters fail to adequately denoise and enhance the contrast of an image. These filters have drawbacks like oversmoothing, diminished texture, and lack of generative capabilities.
Timothy Ryan Taylor, Chun-Tang Chao, Juing-Shian Chiou   +2 more
doaj   +1 more source

CEERS Key Paper. V. Galaxies at 4 < z < 9 Are Bluer than They Appear–Characterizing Galaxy Stellar Populations from Rest-frame ∼1 μm Imaging

The Astrophysical Journal Letters, 2023
We present results from the Cosmic Evolution Early Release Survey on the stellar population parameters for 28 galaxies with redshifts 4 < z < 9 using imaging data from the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) combined with ...
Casey Papovich, Justin W. Cole, Guang Yang, Steven L. Finkelstein, Guillermo Barro, Véronique Buat, Denis Burgarella, Pablo G. Pérez-González, Paola Santini, Lise-Marie Seillé, Lu Shen, Pablo Arrabal Haro, Micaela B. Bagley, Eric F. Bell, Laura Bisigello, Antonello Calabrò, Caitlin M. Casey, Marco Castellano, Katherine Chworowsky, Nikko J. Cleri, Luca Costantin, M. C. Cooper, Mark Dickinson, Henry C. Ferguson, Adriano Fontana, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Taylor A. Hutchison, Jeyhan S. Kartaltepe, Lisa J. Kewley, Allison Kirkpatrick, Dale D. Kocevski, Anton M. Koekemoer, Rebecca L. Larson, Arianna S. Long, Ray A. Lucas, Laura Pentericci, Nor Pirzkal, Swara Ravindranath, Rachel S. Somerville, Jonathan R. Trump, Stephanie M. Urbano Stawinski, Benjamin J. Weiner, Stephen M. Wilkins, L. Y. Aaron Yung, Jorge A. Zavala   +48 more
doaj   +1 more source

Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph on the Spitzer Space Telescope. II. The IRAS Bright Galaxy Sample [PDF]

, 2006
We present spectra taken with the Infrared Spectrograph on Spitzer covering the 5-38 μm region of the 10 ultraluminous infrared galaxies (ULIRGs) found in the IRAS Bright Galaxy Sample (BGS).
L. Armus, V. Charmandaris, H. Spoon, J. Houck, B. Soifer, B. Brandl, P. Appleton, H. Teplitz, S. Higdon, D. Weedman, D. Devost, P. Morris, K. Uchida, J. V. Cleve, G. Sloan, C. Grillmair, M. Burgdorf, S. Fajardo-Acosta, J. Ingalls, J. Higdon, L. Hao, J. Bernard-Salas, T. Herter, J. Troeltzsch, B. Unruh   +24 more
semanticscholar   +1 more source

Dust Disks Around Young Stellar Objects [PDF]

Journal of Astronomy and Space Sciences, 2016
To reproduce the spectral energy distributions (SEDs) of young stellar objects (YSOs), we perform radiative transfer model calculations for the circumstellar dust disks with various shapes and many dust species.
Kyung-Won Suh
doaj   +1 more source

Direct HST Dust Lane Detection in Powerful Narrow-Line Radio Galaxies

Frontiers in Astronomy and Space Sciences, 2017
We present the analysis of near-infrared Hubble Space Telescope imaging of 10 Fanaroff Riley II powerful radio galaxies at low redshift (0.03 < z < 0.11) optically classified as narrow-line radio galaxies.
Edgar A. Ramírez, Itziar Aretxaga, Clive N. Tadhunter, Enrique Lopez-Rodriguez, Enrique Lopez-Rodriguez, Enrique Lopez-Rodriguez, Chris Packham, Chris Packham   +7 more
doaj   +1 more source

Deep Spitzer/IRAC Data for z ∼ 10 Galaxies Reveal Blue Balmer Break Colors: Young Stellar Populations at ∼500 Myr of Cosmic Time

The Astrophysical Journal, 2023
We present the deepest constraints yet on the median rest-UV+optical spectral energy distribution (SED) of z ∼ 10 galaxies prior to James Webb Space Telescope science operations.
Mauro Stefanon, Rychard J. Bouwens, Ivo Labbé, Garth D. Illingworth, Valentino Gonzalez, Pascal A. Oesch   +5 more
doaj   +1 more source

Spitzer Resurrector Mission: Advantages for Space Weather Research and Operations

Aerospace
In 1979, NASA established the Great Observatory program, which included four telescopes (Hubble, Compton, Chandra, and Spitzer) to explore the Universe.
Shawn M. Usman, Giovanni G. Fazio, Christopher A. Grasso, Ryan C. Hickox, Cameo Lance, William B. Rideout, Daveanand M. Singh, Howard A. Smith, Angelos Vourlidas, Joseph L. Hora, Gary J. Melnick, Matthew Ashby, Volker Tolls, Steven Willner, Salma Benitez   +14 more
doaj   +1 more source