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We analyze the spatial distribution of dusty young stellar objects (YSOs) identified in the Spitzer Survey of the Orion Molecular clouds, augmenting these data with Chandra X-ray observations to correct for incompleteness in dense clustered…

We present mid-IR photometric properties for a sample of 28 early-type galaxies observed at 6.75, 9.63 and 15 um with the ISOCAM instrument on board the ISO satellite. We find total mid-IR luminosities in the range 3-48x10^8 L_sun. The…

天体物理学 · 物理学 2009-11-07 F. Ferrari , M. G. Pastoriza , F. D. Macchetto , C. Bonatto , N. Panagia , W. B. Sparks , .

We present maps of 14.4 deg^2 of the Ophiuchus dark clouds observed by the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). These high quality maps depict both numerous point sources as well as extended dust emission…

In this paper we present Spitzer Infrared Spectrograph spectroscopy for 14 intermediate-mass young stellar objects. We use Spitzer spectroscopy to investigate the physical properties of these sources and their environments. Our sample can…

太阳与恒星天体物理 · 物理学 2015-05-30 Jan Pitann , Martin Hennemann , Stephan Birkmann , Jeroen Bouwman , Oliver Krause , Thomas Henning

Core-collapse supernovae (CC SNe), especially those of type II-plateau (II-P), are thought to be important contributors to cosmic dust production. The most obvious indicator of the presence of newly-formed and/or pre-existing dust is the…

太阳与恒星天体物理 · 物理学 2015-06-12 T. Szalai , J. Vinkó

We study the Spectral Energy Distributions, SEDs, (from FUV to MIR bands) of the first sizeable sample of 34 low-luminosity radio galaxies at high redshifts, selected in the COSMOS field. To model the SEDs we use two different…

宇宙学与河外天体物理 · 物理学 2015-06-11 Ranieri D. Baldi , Marco Chiaberge , Alessandro Capetti , Javier Rodriguez-Zaurin , Susana Deustua , William B. Sparks

We present the first detection of a jet in the far-IR [O I] lines from an intermediate mass protostar. We have carried out a Herschel/PACS spectral mapping study in the [O I] lines of OMC-2 FIR 3 and FIR 4, two of the most luminous…

The GLIMPSE archive was used to obtain 3.6--8.0micron, point source photometry and images for 381 massive protostellar candidates lying in the Galactic mid-plane. The colours, magnitudes and spectral indicies of sources in each of the 381…

天体物理学 · 物理学 2009-05-11 M. S. N. Kumar , J. M. C. Grave

We present the results of the first broadband 10.8 um survey of the NGC 2024 cluster. The mid-infrared data were combined with our previously published JHKL photometry in order to construct spectral energy distributions for all detected…

天体物理学 · 物理学 2009-10-31 Karl E. Haisch , Elizabeth A. Lada , Robert K. Pina , Charles M. Telesco , Charles J. Lada

We calculate the expected Mid-IR molecular hydrogen line emission from the first objects in the universe. Due to their low masses, the stellar feedback from massive stars is able to blowaway their gas content and collect it into a cooling…

天体物理学 · 物理学 2016-08-30 Benedetta Ciardi , Andrea Ferrara

We present Keck LWS images of the Orion BN/KL star forming region obtained in the first multi-wavelength study to have 0.3-0.5" resolution from 4.7 to 22 microns. The young stellar objects designated infrared source-n and radio source-I are…

天体物理学 · 物理学 2009-11-10 L. J. Greenhill , D. Y. Gezari , W. C. Danchi , J. Najita , J. D. Monnier , P. G. Tuthill

High-resolution, millimeter observations of disks at the protoplanetary stage reveal substructures such as gaps, rings, arcs, spirals, and cavities. While many protoplanetary disks host such substructures, only a few at the younger…

We present interferometric and single-dish mid-infrared observations of a sample of massive young stellar objects (BN-type objects), using VLTI-MIDI (10 micron) and Subaru-COMICS (24.5 micron). We discuss the regions S140, Mon R2, M8E-IR,…

天体物理学 · 物理学 2014-11-18 W. J. de Wit , M. G. Hoare , R. D. Oudmaijer , T. Fujiyoshi , ;

We present the results of a 2.7 mm continuum interferometric survey of 24 young stellar objects in 11 fields. The target objects range from deeply embedded Class 0 sources to optical T Tauri sources. This is the first sub-arcsecond survey…

天体物理学 · 物理学 2009-10-12 Leslie W. Looney , Lee G. Mundy , W. J. Welch

A new, unbiased Spitzer-MIPS imaging survey (~1.8 square degs) of the young stellar content of the Vela Molecular Cloud-D is presented. The survey is complete down to 5mJy and 250mJy at 24micron (mu) and 70mu, respectively. 849 sources are…

天体物理学 · 物理学 2015-05-13 T. Giannini , D. Lorenzetti , M. De Luca , B. Nisini , M. Marengo , L. Allen , H. A. Smith , G. Fazio , F. Massi , D. Elia , F. Strafella

We use mid-infrared Spitzer spectroscopy and far-infrared Herschel photometry for a sample of twenty main sequence O9--B2 stars in the Small Magellanic Cloud (SMC) with strong 24 micron excesses to investigate the origin of the mid-IR…

The young stellar cluster illuminating the W40 H II region, one of the nearest massive star forming regions, has been observed with the ACIS detector on board the Chandra X-ray Observatory. Due to its high obscuration, this is a…

太阳与恒星天体物理 · 物理学 2015-05-20 Michael A. Kuhn , Konstantin V. Getman , Eric D. Feigelson , Bo Reipurth , Steven A. Rodney , Gordon P. Garmire

It is widely assumed that dust opacities in molecular clouds follow a power-law profile with an index, $\beta$. Recent studies of the Orion Molecular Cloud (OMC) 2/3 complex, however, show a flattening in the spectral energy distribution…

We study the transition from a prestellar core to a Class 0 protostar, using SPH to simulate the dynamical evolution, and a Monte Carlo radiative transfer code to generate the SED and isophotal maps. For a prestellar core illuminated by the…

天体物理学 · 物理学 2009-11-11 D. Stamatellos , A. P. Whitworth , D. F. A. Boyd , S. P. Goodwin

We conduct a census of the high-mass protostellar population of the $\sim70,000\:M_\odot$ Infrared Dark Cloud (IRDC) G028.37+00.07, identifying 35 sources based on their $70\:\mu$m emission, as reported in the {\it Herschel} Hi-GAL catalog…

星系天体物理 · 物理学 2020-07-22 Emily Moser , Mengyao Liu , Jonathan C. Tan , Wanggi Lim , Yichen Zhang , Juan Pablo Farias
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