Results 1 to 10 of about 421,483 (228)

The Infrared Spectrograph on the Spitzer Space Telescope [PDF]

Astrophys.J.Suppl.154:18-24,2004, 2004
The Infrared Spectrograph (IRS) is one of three science instruments on the Spitzer Space Telescope. The IRS comprises four separate spectrograph modules covering the wavelength range from 5.3 to 38micron with spectral resolutions, R \~90 and 600, and it was optimized to take full advantage of the very low background in the space environment. The IRS is
J. R. Houck, Thomas L. Roellig, J. Van Cleve, W. J. Forrest, T. Herter, Charles R. Lawrence, K. Matthews, H. J. Reitsema, B. T. Soifer, D. M. Watson, D. W. Weedman, Marty Huisjen, J. Troeltzsch, D. J. Barry, J. Bernard‐Salas, C. E. Blacken, Bernhard R. Brandl, V. Charmandaris, D. Devost, G. E. Gull, Peter J. Hall, C. Henderson, S. J. U. Higdon, Bruce Pirger, J. Schoenwald, G. C. Sloan, K. I. Uchida, P. N. Appleton, L. Armus, M. Burgdorf, S. B. Fajardo‐Acosta, Carl J. Grillmair, James G. Ingalls, P. Morris, Harry I. Teplitz   +34 more
arxiv   +14 more sources

A Short and Personal History of the Spitzer Space Telescope [PDF]

arXiv, 2005
The Spitzer Space Telescope, born as the Shuttle Infrared Telescope Facility (SIRTF) and later the Space Infrared Telescope Facility (still SIRTF), was under discussion and development within NASA and the scientific community for more than 30 years prior to its launch in 2003.
M. W. Werner
arxiv   +6 more sources

In-flight performance and calibration of the Infrared Array Camera (IRAC) for the Spitzer Space Telescope [PDF]

Proc.SPIEInt.Soc.Opt.Eng.5487:77-92,2005, 2004
The Infrared Array Camera (IRAC) is one of three focal plane instruments on board the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broad-band images at 3.6, 4.5, 5.8, and 8.0 microns in two nearly adjacent fields of view. We summarize here the in-flight scientific, technical, and operational performance of IRAC.
Joseph L. Hora, G. G. Fazio, Lori Allen, M. L. N. Ashby, P. Barmby, Lynne K. Deutsch, Jiasheng Huang, M. Marengo, S. T. Megeath, Gary J. Melnick, M. A. Pahre, B. M. Patten, H. A. Smith, Zhong Wang, S. P. Willner, W. F. Hoffmann, J. L. Pipher, W. J. Forrest, Craig W. McMurtry, Craig R. McCreight, Mark E. McKelvey, Robert E. McMurray, Samuel H. Moseley, Richard G. Arendt, John E. Mentzell, Catherine T. Marx, D. J. Fixsen, E. V. Tollestrup, Peter Eisenhardt, Daniel Stern, Varoujan Gorjian, B. Bhattacharya, S. Carey, W. Glaccum, Mark Lacy, Patrick Lowrance, Seppo Laine, B. Nelson, W. T. Reach, J. R. Stauffer, J. Surace, Gillian Wilson, E. L. Wright   +42 more
arxiv   +3 more sources

The Nature of Faint 24 micron Sources Seen in Spitzer Observations of ELAIS-N1 [PDF]

, 2004
The Spitzer Space Telescope has undertaken the deepest ever observations of the 24 micron sky in the ELAIS-N1 field as part of GOODS Science Verification observations. We present the shape of the 24 micron source counts in the flux range 20-1000 microJy, discuss the redshift distribution and nature of these sources with particular emphasis on their ...
Ranga‐Ram Chary, Stefano Casertano, Mark Dickinson, Henry C. Ferguson, Peter Eisenhardt, D. Elbaz, Norman A. Grogin, Leonidas A. Moustakas, W. T. Reach, Haojing Yan   +9 more
arxiv   +3 more sources

CME Magnetic Structure and IMF Preconditioning Affecting SEP Transport

Space Weather, 2021
Coronal mass ejections (CMEs) and solar energetic particles (SEPs) are two phenomena that can cause severe space weather effects throughout the heliosphere.
Erika Palmerio, Emilia K. J. Kilpua, Olivier Witasse, David Barnes, Beatriz Sánchez‐Cano, Andreas J. Weiss, Teresa Nieves‐Chinchilla, Christian Möstl, Lan K. Jian, Marilena Mierla, Andrei N. Zhukov, Jingnan Guo, Luciano Rodriguez, Patrick J. Lowrance, Alexey Isavnin, Lucile Turc, Yoshifumi Futaana, Mats Holmström   +17 more
doaj   +2 more sources

Prebiotic Synthesis and Isomerization in Interstellar Analog Ice: Glycinal, Acetamide, and Their Enol Tautomers

Angewandte Chemie, Volume 135, Issue 12, March 13, 2023., 2023
Out of the cold: Ammonia (NH3) and acetaldehyde (CH3CHO) are exposed to galactic cosmic ray proxies while frozen at 5 K to simulate the environment of an interstellar molecular cloud. Reactants undergo dissociation and radical recombination to produce glycinal (NH2CH2CHO) and acetamide (CH3CONH2) prior to tautomerization to 2‐aminoethenol (HOCHCHNH2 ...
Joshua H. Marks, Jia Wang, N. Fabian Kleimeier, Andrew M. Turner, André K. Eckhardt, Ralf I. Kaiser   +5 more
wiley   +2 more sources

Investigating Gravitationally Lensed Quasars Observable by Nancy Grace Roman Space Telescope

Galaxies, 2023
In this work, we investigate the possibility of observing quasars, particularly lensed quasars, by the Nancy Grace Roman Space Telescope (Roman).
Lindita Hamolli, Mimoza Hafizi, Francesco De Paolis, Esmeralda Guliqani   +3 more
doaj   +1 more source

SN 2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova

The Astrophysical Journal Letters, 2023
We present preexplosion optical and infrared (IR) imaging at the site of the type II supernova (SN II) 2023ixf in Messier 101 at 6.9 Mpc. We astrometrically registered a ground-based image of SN 2023ixf to archival Hubble Space Telescope (HST), Spitzer ...
Charles D. Kilpatrick, Ryan J. Foley, Wynn V. Jacobson-Galán, Anthony L. Piro, Stephen J. Smartt, Maria R. Drout, Alexander Gagliano, Christa Gall, Jens Hjorth, David O. Jones, Kaisey S. Mandel, Raffaella Margutti, Enrico Ramirez-Ruiz, Conor L. Ransome, V. Ashley Villar, David A. Coulter, Hua Gao, David Jacob Matthews, Kirsty Taggart, Yossef Zenati   +19 more
doaj   +1 more source

Astrophysical Distance Scale. VII. A Self-consistent, Multiwavelength Calibration of the Slopes and Relative Zero Points for the Run of Luminosity with the Color of Stars Defining the Tip of the Red Giant Branch

The Astronomical Journal, 2023
Given the recent successful launch of the James Webb Space Telescope, determining robust calibrations of the slopes and absolute magnitudes of the near- to mid-infrared tip of the red-giant branch (TRGB) will be essential to measuring precise ...
Barry F. Madore, Wendy L. Freedman, Kayla Owens   +2 more
doaj   +1 more source

Decomposition of the central structure of NGC 2273 in the NIR: A case study

Astronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023
Abstract The Seyfert 2 galaxy NGC 2273 is a prime target to explore how active nuclei can be fed. It has a star‐forming innermost nuclear ring with a radius of 0.33kpc from where material may be funneled to the supermassive black hole in its center. In this article, we discuss high‐resolution adaptive optics aided JHKs images of NGC 2273 taken with the
L. Schey, J. Heidt, A. Pramskiy, D. Thompson, G. Agapito, S. Esposito, R. Gredel, D. Miller, E. Pinna, A. Puglisi, F. Rossi, W. Seifert, G. Taylor, A. Quirrenbach   +13 more
wiley   +1 more source