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19912026
Showing 2012 · astro-ph.GAShow all

10 papers · 2 filters

astro-ph.GA2012★ 70 cited

Early-stage young stellar objects in the Small Magellanic Cloud

J. M. Oliveira, J. Th. van Loon, G. C. Sloan +12

We present new observations of 34 YSO candidates in the SMC. The anchor of the analysis is a set of Spitzer-IRS spectra, supplemented by groundbased 3-5 micron spectra, Spitzer and…

astro-ph.GA2012★ 146 cited

From Prestellar to Protostellar Cores II. Time Dependence and Deuterium Fractionation

Yuri Aikawa, Valentine Wakelam, Franck Hersant +2

We investigate the molecular evolution and D/H abundance ratios that develop as star formation proceeds from a dense-cloud core to a protostellar core, by solving a gas-grain react…

astro-ph.GA2012★ 43 cited

Evidence for Grain Growth in Molecular Clouds: A Bayesian Examination of the Extinction Law in Perseus

Jonathan B. Foster, Kaisey S. Mandel, Jaime E. Pineda +3

We investigate the shape of the extinction law in two 1-degree square fields of the Perseus Molecular Cloud complex. We combine deep red-optical (r, i, and z-band) observations obt…

astro-ph.GA2012★ 70 cited

Investigation of Dual Active Nuclei, Outflows, Shock-Heated Gas, and Young Star Clusters in Markarian 266

J. M. Mazzarella, K. Iwasawa, T. Vavilkin +24

Results of observations with the Spitzer, Hubble, GALEX, Chandra, and XMM-Newton space telescopes are presented for the Luminous Infrared Galaxy (LIRG) merger Mrk 266. The SW (Seyf…

astro-ph.GA2012★ 46 cited

YSOVAR: Six pre-main-sequence eclipsing binaries in the Orion Nebula Cluster

M. Morales-Calderón, J. R. Stauffer, K. G. Stassun +17

Eclipsing binaries (EBs) provide critical laboratories for empirically testing predictions of theoretical models of stellar structure and evolution. Pre-main-sequence (PMS) EBs are…

astro-ph.GA2012★ 4 cited

Probing the physical and chemical structure of the CS core in LDN 673. Multitransitional and continuum observations

Oscar Morata, Josep Miquel Girart, Robert Estalella +1

High-angular resolution observations of dense molecular cores show that these cores can be clumpier at smaller scales, and that some of these clumps can also be unbound or transien…

astro-ph.GA2012★ 55 cited

Carbon-rich dust production in metal-poor galaxies in the Local Group

G. C. Sloan, M. Matsuura, E. Lagadec +7

We have observed a sample of 19 carbon stars in the Sculptor, Carina, Fornax, and Leo I dwarf spheroidal galaxies with the Infrared Spectrograph on the Spitzer Space Telescope. The…

astro-ph.GA2012★ 12 cited

Detection of the Circumstellar Disk Associated with 2MASS J0820-8003 in the eta Cha Cluster

M. Simon, Joshua E. Schlieder, Ana-Maria Constantin +1

The Nearby Young Moving Groups (NYMGs) of stars are ideal for the study of evolution circumstellar disks in which planets may form because their ages range from a few Myr to about…

astro-ph.GA2012★ 6 cited

First Science Observations with SOFIA/FORCAST: 6 to 37 micron Imaging of the Central Orion Nebula

R. Y. Shuping, Mark R. Morris, Terry L. Herter +9

We present new mid-infrared images of the central region of the Orion Nebula using the newly commissioned SOFIA airborne telescope and its 5 -- 40 micron camera FORCAST. The 37.1 m…

astro-ph.GA2012★ 22 cited

First science results from SOFIA/FORCAST: The mid-infrared view of the compact HII region W3A

F. Salgado, O. Berne, J. D. Adams +11

The massive star forming region W3 was observed with the faint object infrared camera for the SOFIA telescope (FORCAST) as part of the Short Science program. The 6.4, 6.6, 7.7, 19.…