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Related papers: Early-stage young stellar objects in the Small Mag…

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Currently ~36 different absorption bands have been detected in the infrared spectra of cold, dense interstellar and circumstellar environments. These are attributed to the vibrational transitions of ~17 different molecules frozen on dust…

Astrophysics · Physics 2007-05-23 A. C. A. Boogert , P. Ehrenfreund

We present a detailed X-ray spectral analysis of 13 supernova remnants (SNR) in the Small Magellanic Cloud (SMC). We apply both single-temperature non-equilibrium ionisation models and models based on the Sedov similarity solution, where…

Astrophysics · Physics 2009-11-10 K. J. van der Heyden , J. A. M. Bleeker , J. S. Kaastra

We present an analysis of dust grain emission in the diffuse interstellar medium of the Small Magellanic Cloud (SMC). This study is motivated by the availability of 170 microns ISOPHOT data covering a large part of the SMC, with a…

Astrophysics · Physics 2009-11-10 C. Bot , F. Boulanger , G. Lagache , L. Cambresy , D. Egret

Massive young stellar objects (MYSOs) with hot cores are classic sources of complex organic molecules. The origins of these molecules in such sources, as well as the small- and large-scale differentiation between nitrogen- and…

Solar and Stellar Astrophysics · Physics 2015-03-25 Edith C. Fayolle , Karin I. Öberg , Robin T. Garrod , Ewine F. van Dishoeck , Suzanne E. Bisschop

Accurate measurements of statistical properties, such as the star formation rate and the lifetime of young stellar objects (YSOs) in different stages, is essential for constraining star formation theories. However, it is a difficult task to…

Solar and Stellar Astrophysics · Physics 2021-05-04 Yi-Lung Chiu , Chi-Ting Ho , Daw-Wei Wang , Shih-Ping Lai

We present a catalog of 1439 young stellar objects (YSOs) spanning the 1.42 deg^2 field surveyed by the Chandra Carina Complex Project (CCCP), which includes the major ionizing clusters and the most active sites of ongoing star formation…

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…

We report the detection of absorption from interstellar C_2 and C_3 toward the moderately reddened star Sk 143, located in the near 'wing' region of the SMC, in optical spectra obtained with the ESO VLT/UVES. These detections of C_2…

Astrophysics of Galaxies · Physics 2015-06-11 Daniel E. Welty , J. Christopher Howk , Nicolas Lehner , John H. Black

We present Spitzer, NIR and millimeter observations of the massive star forming regions W5-east, S235, S252, S254-S258 and NGC7538. Spitzer data is combined with near-IR observations to identify and classify the young population while 12CO…

Solar and Stellar Astrophysics · Physics 2015-06-19 L. Chavarria , L. Allen , C. Brunt , J. L. Hora , A. Muench , G. Fazio

Characterising stellar and circumstellar properties of embedded young stellar objects (YSOs) is mandatory for understanding the early stages of the stellar evolution. This task requires the combination of both spectroscopy and photometry,…

Solar and Stellar Astrophysics · Physics 2011-11-11 A. Caratti o Garatti , R. Garcia Lopez , S. Antoniucci , B. Nisini , T. Giannini , J. Eisloeffel , T. P. Ray , D. Lorenzetti , S. Cabrit

Using infrared photometric data extracted from the 2MASS, IRAS and MSX databases, 142 suspected young stellar objects (YSOs) are selected from about 2 million stars in the Camelopardalis segment of the Milky Way limited by Galactic…

Astrophysics · Physics 2009-06-25 V. Straizys , V. Laugalys

JWST observations of NGC 346, a star-forming region in the metal-poor Small Magellanic Cloud, reveal a substantial population of sub-solar mass young stellar objects (YSOs) with IR excess. We detected $\sim$500 YSOs and pre main sequence…

The sample of IRAS galaxies with spectral energy distributions that peak near 60 microns are called Sixty Micron Peakers (SMPs or 60PKs). Their generally peculiar and amorphous morphologies, hot dust and lack of a cirrus component have been…

Almost 200 different species have been detected in the interstellar medium (ISM) during the last decades, revealing not only simple species but complex molecules with more than 6 atoms. Other exotic compounds, like the weakly-bound dimer…

Astrophysics of Galaxies · Physics 2016-10-26 A. Potapov , A. Sanchez-Monge , P. Schilke , U. U. Graf , Th. Moeller , S. Schlemmer

We have performed Atacama Large Millimeter/submillimeter Array (ALMA) observations in $^{12}$CO($J=2-1$), $^{13}$CO($J=2-1$), C$^{18}$O($J=2-1$), $^{12}$CO($J=3-2$), $^{13}$CO($J=3-2$), and CS($J=7-6$) lines toward the active star-forming…

<Context.> Nuclear star clusters (NSCs) at the dynamical center of galaxies appear to have a complex star formation history. This suggests repeated star formation even in the influence of the strong tidal field from supermassive black…

Astrophysics of Galaxies · Physics 2016-03-16 Shogo Nishiyama , Rainer Schoedel , Tatsuhito Yoshikawa , Tetsuya Nagata , Yosuke Minowa , Motohide Tamura

We have carried out sub-mm 12CO(J=3-2) observations of 6 giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC) with the ASTE 10m sub-mm telescope at a spatial resolution of 5 pc and very high sensitivity. We have identified 32…

The Small Magellanic Cloud (SMC) hosts a large number of Be/X-ray binaries, however no Be/white dwarf system is known so far, although population synthesis calculations predict that they might be more frequent than Be/neutron star systems.…

High Energy Astrophysical Phenomena · Physics 2015-06-03 R. Sturm , F. Haberl , W. Pietsch , M. J. Coe , S. Mereghetti , N. La Palombara , R. A. Owen , A. Udalski

We report results of the first study utilizing the ultraviolet capabilities of the Hubble Space Telescope to investigate a sample of Planck Galactic Cold Clump (PGCC) sources. We have selected high-resolution spectra toward 25 stars that…

Astrophysics of Galaxies · Physics 2019-02-27 Cody Dirks , David M. Meyer

The number and spatial distribution of confirmed quasi-stellar objects (QSOs) behind the Magellanic system is limited. This undermines their use as astrometric reference objects for different types of studies. We have searched for criteria…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 M. -R. L. Cioni , D. Kamath , S. Rubele , J. Th. van Loon , P. R. Wood , J. P. Emerson , B. K. Gibson , M. A. T. Groenewegen , V. D. Ivanov , B. Miszalski , V. Ripepi