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We present the first results of a program to characterize the disk and envelope structure of typical Class 0 protostars in nearby low-mass star forming regions. We use Spitzer IRS mid-infrared spectra, high resolution CARMA 230 GHz…

Solar and Stellar Astrophysics · Physics 2014-11-20 Melissa L. Enoch , Stuartt Corder , Michael M. Dunham , Gaspard Duchêne

We present a three dimensional model for the Milky Way fit to the far-infrared (FIR) and near-infrared (NIR) data from the COBE/DIRBE instrument for Galactic latitudes |b| < 30 degrees and to within 20 degrees of the Galactic center.…

Astrophysics · Physics 2010-04-06 R. Drimmel , D. N. Spergel

We present the results of a systematic study of mid-IR spectra of Galactic regions, Magellanic HII regions, and galaxies of various types (dwarf, spiral, starburst), observed by the satellites ISO and Spitzer. We study the relative…

Astrophysics · Physics 2009-11-13 F. Galliano , S. C. Madden , A. G. G. M. Tielens , E. Peeters , A. P. Jones

We present high resolution (0.3" = 16 AU), high signal-to-noise ratio Submillimeter Array observations of the 870 microns (345 GHz) continuum and CO J=3--2 line emission from the protoplanetary disk around TW Hya. Using continuum and line…

Fast radio bursts (FRBs) are very energetic pulses of unknown physical origin. These can be used to study the intergalactic medium (IGM) thanks to their dispersion measure (DM). The DM has several contributions that can be measured (or…

We used three indicators of massive star formation: $H_{\alpha}$, FIR and non-thermal radio luminosities, to compare estimations of Star Formation Rate (SFR) for the sample of 34 spiral galaxies. To adjust SFR values, obtained from…

Astrophysics · Physics 2009-10-31 D. V. Bizyaev

The aim of this paper is to characterize the radial structure of the star formation rate (SFR) in galaxies in the nearby Universe as represented by the CALIFA survey. The sample under study contains 416 galaxies observed with IFS, covering…

We have conducted a study of debris disks around F stars in order to explore correlations between rotation, stellar winds, and circumstellar disks. We obtained new 24 micron photometry from Spitzer's Multiband Imaging Photometer for Spitzer…

Solar and Stellar Astrophysics · Physics 2015-06-11 Trisha Mizusawa , Luisa Rebull , John Stauffer , Geoffrey Bryden , Michael Meyer , Inseok Song

The spectrum of the unidentified infrared (UIR) emission bands between 5.9 and 11.7 [micro]m has been observed for the first time in the disk of an external galaxy. We have used the low-resolution spectrometer of the ISOPHOT instrument…

Astrophysics · Physics 2007-05-23 K. Mattila , K. Lehtinen , D. Lemke

Dispersion measure (DM) of Fast Radio Bursts (FRBs) are commonly used as a indicator of distance assuming that DM in excess of the expected amount within the Milky Way in the direction of each FRB arise mostly from the inter-galactic…

High Energy Astrophysical Phenomena · Physics 2020-05-27 Yuu Niino

A key for understanding the evolution of galaxies and in particular their star formation history will be future ultra-deep radio surveys. While star formation rates (SFRs) are regularly estimated with phenomenological formulas based on the…

Astrophysics of Galaxies · Physics 2017-04-12 Jennifer Schober , Dominik R. G. Schleicher , Ralf S. Klessen

In this paper we present the results of a mid infrared study of G49.5-0.4, or W51A, part of the massive starbirth complex W51. Combining public data from the $Spitzer$ IRAC camera, and Gemini mid infrared camera T-ReCS at 7.73, 9.69, 12.33…

Astrophysics of Galaxies · Physics 2016-07-06 Cassio L. Barbosa , Robert D. Blum , Augusto Damineli , Peter S. Conti , Danilo M. Gusmão

We present infrared and radio continuum observations of S 201 star forming region. A massive star cluster is observed in this region, which contains different classes of young stellar objects. The near-infrared colour-colour and…

Astrophysics · Physics 2009-11-10 D. K. Ojha , S. K. Ghosh , V. K. Kulkarni , L. Testi , R. P. Verma , S. Vig

We use deep observations obtained with the Photodetector Array Camera and Spectrometer (PACS) onboard the Herschel space observatory to study the far-infrared (FIR) properties of submm and optically faint radio galaxies (SMGs and OFRGs).…

We present a high spatial resolution submillimeter continuum survey of 24 circumstellar disks in the Tau-Aur and Oph-Sco star formation regions using the SMA. In the context of a simple model, we use broadband SEDs and submillimeter…

Astrophysics · Physics 2011-02-11 Sean M. Andrews , Jonathan P. Williams

A spatially resolved analysis of the lobes of the radio galaxy Pictor A has been performed for the first time starting from a 50 ksec XMM-Newton observation. Magnetic field, B_{IC}, particle density, particle to magnetic field energy…

Astrophysics · Physics 2007-07-19 G. Migliori , P. Grandi , G. C. G. Palumbo , G. Brunetti , C. Stanghellini

(abridged) We present a study on the effects of the intracluster medium (ICM) on the interstellar medium (ISM) of 10 Virgo cluster spiral galaxies using {\it Spitzer} far-infrared (FIR) and VLA radio continuum imaging. Relying on the…

Astrophysics · Physics 2011-02-11 E. J. Murphy , J. D. P. Kenney , G. Helou , A. Chung , J. H. Howell

Direct imaging surveys have discovered wide-orbit planetary-mass companions that challenge existing models of both star and planet formation, but their demographics remain poorly sampled. We have developed an automated binary companion…

Solar and Stellar Astrophysics · Physics 2019-09-25 Raquel A. Martinez , Adam L. Kraus

Context. In order to understand galaxy evolution, it is essential to measure star formation rates (SFRs) across Cosmic times. Aims. The use of radio continuum emission as an extinction-free star formation tracer necessitates a good…

Astrophysics of Galaxies · Physics 2023-09-13 V. Heesen , S. Schulz , M. Brüggen , H. Edler , M. Stein , R. Paladino , A. Boselli , A. Ignesti , M. Fossati , R. -J. Dettmar

The morphology of the IR emission and the properties of discrete FIR sources in M31 disk are studied using the HiRes maps from IRAS. Very thin and bright FIR arm segments are shown in these maps, which have similar structure as the HI gas…

Astrophysics · Physics 2009-10-28 Cong Xu , George Helou
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