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The VVV survey has allowed for an unprecedented number of multi-epoch observations of the southern Galactic plane. In a recent paper,13 massive young stellar objects(MYSOs) have already been identified within the highly variable(\Delta Ks >…

We present the results of our investigation of the star-forming complexes W51 and W43, two of the brightest in the first Galactic quadrant. In order to determine the young stellar object (YSO) populations in W51 and W43 we used…

We have performed a WISE (Wide-Field Infrared Survey Explorer) based study to identify and characterize young stellar objects (YSOs) in 12x12 degree Perseus OB2 association. Spectral energy distribution (SED) slope in range of 3.4-12 micron…

太阳与恒星天体物理 · 物理学 2015-09-16 Mohaddesseh Azimlu , J. Rafael Martinez-Galarza , August A. Muench

With the Wide-Field Infrared Survey Explorer (WISE), we searched for young stellar objects (YSOs) in a 100 deg^2 region centered on the lightly studied Canis Major star forming region. Applying stringent magnitude cuts to exclude the…

太阳与恒星天体物理 · 物理学 2016-08-17 William J. Fischer , Deborah L. Padgett , Karl L. Stapelfeldt , Marta Sewilo

We present the results of deep, high angular resolution Very Large Array (VLA) surveys for radio continuum emission towards a sample of 14 GLIMPSE Extended Green Objects (EGOs). Identified as massive young stellar object (MYSO) outflow…

太阳与恒星天体物理 · 物理学 2015-05-30 C. J. Cyganowski , C. L. Brogan , T. R. Hunter , E. Churchwell

The Wide-field Infrared Survey Explorer (WISE) has completed its all-sky survey at 3.4-22 micron. We merge the WISE data with optical SDSS data and provide a phenomenological characterization of mid-IR, extragalactic sources. WISE is most…

宇宙学与河外天体物理 · 物理学 2015-06-11 Lin Yan , E. Donoso , C. -W. Tsai , D. Stern , R. J. Assef , P. Eisenhardt , A. W. Blain , R. Cutri , T. Jarrett , S. A. Stanford , E. Wright , C. Bridge , D. A. Riechers

We present 737 candidate Young Stellar Objects (YSOs) near the W51 Giant Molecular Cloud (GMC) over an area of 1.25 deg x 1.00 deg selected from Spitzer Space Telescope data. We use spectral energy distribution (SED) fits to identify YSOs…

星系天体物理 · 物理学 2014-11-20 Miju Kang , John H. Bieging , Matthew S. Povich , Youngung Lee

The 7 and 15 um observations of selected fields in the Galactic Plane obtained with ISOCAM during the ISOGAL program offer an unique possibility to search for previously unknown YSOs, undetected by IRAS because of lower sensitivity or…

天体物理学 · 物理学 2009-11-07 M. Felli , L. Testi , F. Schuller , A. Omont

Using images from the Spitzer GLIMPSE Legacy survey, we have identified more than 300 extended 4.5 micron sources (abbreviated EGO, Extended Green Object, for the common coding of the [4.5] band as green in 3-color composite IRAC images).…

We present the results of a high angular resolution Very Large Array (VLA) Class I 44 GHz and Class II 6.7 GHz methanol maser survey of a sample of ~20 massive young stellar object (MYSO) outflow candidates selected on the basis of extended…

太阳与恒星天体物理 · 物理学 2009-09-28 C. J. Cyganowski , C. L. Brogan , T. R. Hunter , E. Churchwell

The second $Gaia$ Data Release (DR2) contains astrometric and photometric data for more than 1.6 billion objects with mean $Gaia$ $G$ magnitude $<$20.7, including many Young Stellar Objects (YSOs) in different evolutionary stages. In order…

太阳与恒星天体物理 · 物理学 2019-05-22 G. Marton , P. Ábrahám , E. Szegedi-Elek , J. Varga , M. Kun , Á. Kóspál , E. Varga-Verebélyi , S. Hodgkin , L. Szabados , R. Beck , Cs. Kiss

We carried out a search for new infrared star clusters, stellar groups and candidates using WISE images, which are very sensitive to dust emission nebulae. We report the discovery of 437 embedded clusters and stellar groups that show a…

太阳与恒星天体物理 · 物理学 2015-03-27 Denilso Camargo , Eduardo Bica , Charles Bonatto

Massive young stellar objects are known to undergo an evolutionary phase in which high mass accretion rates drive strong outflows. A class of objects believed to trace this phase accurately is the GLIMPSE Extended Green Object (EGO) sample,…

(Abridged) Photometry of archival Spitzer observations of the Large Magellanic Cloud (LMC) are used to search for young stellar objects (YSOs). Simple mid-infrared selection criteria were used to exclude most normal and evolved stars and…

太阳与恒星天体物理 · 物理学 2015-05-13 Robert A. Gruendl , You-Hua Chu

We report the first systematic survey of molecular lines (including HCO+ (1-0) and 12CO, 13CO, C18O (1-0) lines at 3 mm band) towards a new sample of 88 massive young stellar object (MYSO) candidates associated with ongoing outflows (known…

太阳与恒星天体物理 · 物理学 2014-11-20 Xi Chen , Zhi-Qiang Shen , Jing-jing Li , Ye Xu , Jin-hua He

The Taurus Molecular Cloud subtends a large solid angle on the sky, in excess of 250 square degrees. The search for legitimate Taurus members to date has been limited by sky coverage as well as the challenge of distinguishing members from…

Through matches with the Sloan Digital Sky Survey (SDSS) catalogue we identify the location of various families of astronomical objects in WISE colour space. We identify reliable indicators that separate Galactic/local from extragalactic…

星系天体物理 · 物理学 2014-07-03 Robert Nikutta , Nicholas Hunt-Walker , Maia Nenkova , Zeljko Ivezic , Moshe Elitzur

We present the initial results of our investigation of the star-forming complex W49, one of the youngest and most luminous massive star forming regions in our Galaxy. We used Spitzer/Infrared Array Camera (IRAC) data to investigate massive…

太阳与恒星天体物理 · 物理学 2015-12-17 Gozde Saral , Joseph L. Hora , Sarah E. Willis , Xavier P. Koenig , Robert A. Gutermuth , A. Talat Saygac

We present results from our spectroscopic study, using the Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope, designed to identify massive young stellar objects (YSOs) in the Galactic Center (GC). Our sample of 107 YSO…

Utilizing a decade-long unTimely dataset, supplemented by multi-band data from archives, we search for young stellar objects (YSOs) with variations larger than one magnitude in W1 band within a region of 110 square degrees in the Galactic…

太阳与恒星天体物理 · 物理学 2024-06-27 Jiaxun Li , Tinggui Wang
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