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Related papers: Mid-Infrared Galaxy Morphology Along the Hubble Se…

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We have conducted a survey of a sample of infrared-dark clouds (IRDCs) with the Spitzer Space Telescope in order to explore their mass distribution. We present a method for tracing mass using dust absorption against the bright Galactic…

Solar and Stellar Astrophysics · Physics 2014-11-18 Sarah E. Ragan , Edwin A. Bergin , Robert A. Gutermuth

We present near-infrared images obtained with the HST NICMOS camera for a sample of 9 luminous (LIGs: L_IR (8-1000 microns) >~ 10^11 L_sun) and 15 ultra-luminous (ULIGS: L_IR >~ 10^12 L_sun) infrared galaxies. The sample includes…

Infrared to millimetre spectral energy distributions have been obtained for 41 bright ultra-luminous infrared galaxies. The observations were carried out with ISOPHOT between 10 and 200 micron and supplemented for 16 sources with SCUBA at…

Aims: An all-sky survey of loop- and arc-like intensity enhancements has been performed in order to investigate the large-scale structure of the diffuse far-infrared emission. Methods: We used maps made of 60 and 100 micrometer processed…

Astrophysics · Physics 2015-06-24 V. Konyves , Cs. Kiss , A. Moor , Z. Kiss , L. V. Toth

The nearby spiral galaxy NGC 6946 was observed with ISO-CAM in the mid-infrared, achieving 7 arcsec resolution and sub-MJy/steradian sensitivity. Images taken with CAM filters LW2 (7 microns) and LW3 (15 microns) are analysed to determine…

The gross features in the distribution of stars as well as warm (T >~ 100 K) interstellar dust in the Galactic disk have been investigated using the recent mid infrared survey by Midcourse Space Experiment (MSX) at 8, 12, 14 & 21 micron…

Astrophysics · Physics 2009-11-10 S. Vig , S. K. Ghosh , D. K. Ojha

Dust emission in the far-infrared (FIR) characterizes the temperature and quantity of interstellar dust in a spiral disk. The three Spitzer/MIPS bands are well suited to measuring the gradient in temperature and the total optical depth in…

How does the submm galaxy population detected by SCUBA fit into galaxy evolution? How do these rare starbursting systems, which contribute significantly to high redshift star-formation, relate to other galaxy populations? Deep radio…

We are conducting a survey of several regions of high-mass star formation to assess their content and structure. The observations include Spitzer observations, ground-based optical and near-IR imaging surveys, and optical and IR spectra of…

Astrophysics · Physics 2011-03-10 L. E. Allen , J. L. Hora , S. T. Megeath , L. K. Deutsch , G. G. Fazio , L. Chavarria , R. W. Dell

The mid-far-infrared spectral energy distributions (SEDs) of 83 active galaxies, mostly Seyfert galaxies, selected from the extended 12 micron sample are presented. The data were collected using all three instruments, IRAC, IRS, and MIPS,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 J. F. Gallimore , A. Yzaguirre , J. Jakoboski , M. J. Stevenosky , D. J. Axon , S. A. Baum , C. L. Buchanan , M. Elitzur , M. Elvis , C. P. O'Dea , A. Robinson

We present a panoramic atlas of Spitzer/IRS spectra of extragalactic sources collected from the recent literature, with value added measurements of their spectral features obtained in a homogeneous and concise manner. The atlas covers the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Antonio Hernán-Caballero , Evanthia Hatziminaoglou

The imaging channel on the Mid-Infrared Instrument (MIRI) is equipped with four coronagraphs that provide high contrast imaging capabilities for studying faint point sources and extended emission that would otherwise be overwhelmed by a…

We have measured the near-infrared colors and the fluxes of individual pixels in 68 galaxies common to the Spitzer Infrared Nearby Galaxies Survey and the Large Galaxy Atlas Survey. Each galaxy was separated into regions of increasingly red…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Erin Mentuch , Roberto Abraham , Stefano Zibetti

We demonstrate estimating the total infrared luminosity, LIR, and star formation rates (SFRs) of star-forming galaxies at redshift 0 < z < 2.8 from single-band 24 micron observations, using local spectral energy distributions (SED)…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 W. Rujopakarn , G. H. Rieke , B. J. Weiner , P. Pérez-González , M. Rex , G. L. Walth , J. S. Kartaltepe

We show that the far-IR properties of distant Luminous and Ultraluminous InfraRed Galaxies (LIRGs and ULIRGs) are on average divergent from analogous sources in the local Universe. Our analysis is based on Spitzer MIPS and IRAC data of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 M. Symeonidis , M. J. Page , N. Seymour , T. Dwelly , K. Coppin , I. McHardy , G. H. Rieke , M. Huynh

The standard method of mapping the interstellar medium in a galaxy, by observing the molecular gas in the CO 1-0 line and the atomic gas in the 21-cm line, is largely limited with current telescopes to galaxies in the nearby universe. In…

We present results on the interstellar medium (ISM) properties of 29 galaxies based on a comparison of {\it Spitzer} far-infrared and Westerbork Synthesis Radio Telescope radio continuum imagery. Of these 29 galaxies, 18 are close enough to…

Astrophysics · Physics 2008-02-19 E. J. Murphy , G. Helou , J. D. P. Kenney , L. Armus , R. Braun

We report on IRAC-4.5mic, IRAC-8.0mic and MIPS-24mic deep observations of 16 Gamma-Ray Burst (GRBs) host galaxies performed with the Spitzer Space Telescope, and we investigate in the thermal infrared the presence of evolved stellar…

Astrophysics · Physics 2009-11-11 E. Le Floc'h , V. Charmandaris , W. J. Forrest , F. Mirabel , L. Armus , D. Devost

We have measured the mid-infrared radiation from an orientation-unbiased sample of powerful 3C RR galaxies and quasars using the IRS and MIPS instruments aboard the Spitzer Space Telescope. We fit the Spitzer data as well as other…

Astrophysics · Physics 2007-07-30 Kieran Cleary , Charles R. Lawrence , Jason A. Marshall , Lei Hao , David Meier

We have derived the dust emissivity in the Far-Infrared (FIR) using data available in the literature. We use two wavelength dependences derived from spectra of Galactic FIR emission (Reach et al. 1995). A value for the emissivity,…

Astrophysics · Physics 2007-05-23 Simone Bianchi , Jonathan I. Davies , Paul B. Alton