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NGC6357 is an active star forming region with very young massive open clusters (OC). These clusters contain some of the most massive stars in the Galaxy and strongly interact with nearby giant molecular clouds (GMC). We study the young…

Solar and Stellar Astrophysics · Physics 2014-12-24 Fabrizio Massi , Andrea Giannetti , Elisa di Carlo , Jan Brand , Maria Teresa Beltrán , Gianni Marconi

Using the ASTE 10 m submillimeter telescope and the 1.4 m Infrared Survey Facility (IRSF), we performed an extensive outflow survey in the Orion Molecular Cloud -2 and -3 region. Our survey, which includes 41 potential star-forming sites,…

We observe the 1.2 mm continuum emission around the OB cluster forming region G10.6-0.4, using the IRAM 30m telescope MAMBO-2 bolometer array and the Submillimeter array. Comparison of the Spitzer 24 $\mu$m and 8 $\mu$m images with our 1.2…

Solar and Stellar Astrophysics · Physics 2015-05-30 Hauyu Baobab Liu , Guillermo Quintana-Lacaci , Ke Wang , Paul T. P. Ho , Zhi-Yun Li , Qizhou Zhang , Zhiyu Zhang

We investigate the star formation activity in a young star forming cluster embedded at the edge of the RCW 41 HII region. As a complementary goal, we aim at demonstrating the gain provided by Wide-Field Adaptive Optics instruments to study…

Solar and Stellar Astrophysics · Physics 2015-04-22 B. Neichel , M. R. Samal , H. Plana , A. Zavagno , A. Bernard , T. Fusco

We present a multiwavelength study of the Galactic H II region Sh2-297, located in Canis Major OB1 complex. Optical spectroscopic observations are used to constrain the spectral type of ionizing star HD 53623 as B0V. The classical nature of…

Astrophysics of Galaxies · Physics 2015-06-11 K. K. Mallick , D. K. Ojha , M. R. Samal , A. K. Pandey , B. C. Bhatt , S. K. Ghosh , L. K. Dewangan , M. Tamura

Using observations obtained with the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope (HST), we have studied the properties of the stellar populations in the central regions of 30 Dor, in the Large Magellanic Cloud. The…

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…

Solar and Stellar Astrophysics · Physics 2015-05-20 Michael A. Kuhn , Konstantin V. Getman , Eric D. Feigelson , Bo Reipurth , Steven A. Rodney , Gordon P. Garmire

We present 70 and 160 micron Herschel science demonstration images of a field in the Orion A molecular cloud that contains the prototypical Herbig-Haro objects HH 1 and 2, obtained with the Photodetector Array Camera and Spectrometer…

We present new Spitzer Space Telescope observations of the region NGC 2467, and use these observations to determine how the environment of an HII region affects the process of star formation. Our observations comprise IRAC (3.6, 4.5, 5.8,…

Astrophysics · Physics 2009-07-22 Keely D. Snider , J. Jeff Hester , Steven J. Desch , Kevin R. Healy , Jon Bally

Deep optical photometric data on the NGC 7538 region were collected and combined with archival data sets from $Chandra$, 2MASS and {\it Spitzer} surveys in order to generate a new catalog of young stellar objects (YSOs) including those not…

Solar and Stellar Astrophysics · Physics 2017-03-22 Saurabh Sharma , A. K. Pandey , D. K. Ojha , Himali Bhatt , K. Ogura , N. Kobayashi , R. Yadav , J. C. Pandey

W5-E has been observed with the Herschel-PACS and -SPIRE photometers, at 100, 160, 250, 350, and 500 microns. The dust temperature map shows a rather uniform temperature, in the range 17.5-20 K in the dense condensations or filaments, 21-22…

Astrophysics of Galaxies · Physics 2015-06-11 L. Deharveng , A. Zavagno , L. D. Anderson , F. Motte , A. Abergel , Ph. Andre , S. Bontemps , G. Leleu , H. Roussel , D. Russeil

We present far-infrared, submillimetre, and millimetre observations of bright IRAS sources and outflows that are associated with massive CS clumps in the Monoceros OB1 Dark Cloud. Individual star-forming cores are identified within each…

Astrophysics · Physics 2009-11-07 G. Wolf-Chase , G. Moriarty-Schieven , M. Fich , M. Barsony

This work aims at investigating the molecular gas component in the vicinity of two young stellar object (YSO) candidates identified at the border of the HII region G034.8-0.7 that is evolving within a molecular cloud shocked by the SNR W44.…

Astrophysics of Galaxies · Physics 2015-05-13 S. Paron , M. E. Ortega , M. Rubio , G. Dubner

We present a multi-wavelength study of the region towards the GM 2-4 nebula and the nearby source IRAS 05373+2340. Our near-infrared H2 1-0 S(1) line observations reveal various shock-excited features which are part of several bipolar…

We present a study of the structure of the high mass star-forming region RCW~38 and the spatial distribution of its young stellar population. Spitzer IRAC photometry 3-8um are combined with 2MASS near-IR data to identify young stellar…

Solar and Stellar Astrophysics · Physics 2015-05-30 Elaine Winston , Scott J. Wolk , Tyler Bourke , S. Thomas Megeath , Robert Gutermuth , Brad Spitzbart

We present the first results of a ground-based programme conducted on 1-4m class telescopes. Our sample consists of 1097 active and presumably young stars, all of them being optical counterparts of RASS X-ray sources in the northern…

Solar and Stellar Astrophysics · Physics 2015-05-13 P. Guillout , A. Klutsch , A. Frasca , R. Freire Ferrero , E. Marilli , G. Mignemi , K. Biazzo , J. Bouvier , R. Monier , C. Motch , M. Sterzik

We present mid-infrared (10.4 \micron, 11.7 \micron, and 18.3 \micron) imaging intended to locate and characterize the suspected protostellar components within the Bok globule CB54. We detect and confirm the protostellar status for the…

Astrophysics · Physics 2009-06-23 David R. Ciardi , Cynthia Gomez Martin

Near-infrared photometry and narrow/broad-band imaging of the massive and luminous young stellar object IRAS 05361+3539 are presented. Imaging observations were made at Mt. Abu while the photometric data were taken from the 2MASS. From the…

Astrophysics · Physics 2007-05-23 A. Chakraborty , D. K. Ojha , B. G. Anandarao , T. N. Rengarajan

Observations of the atomic and molecular line emission associated with jets and outflows emitted by young stellar objects can be used to trace the various evolutionary stages they pass through as they evolve to become main sequence stars.…

Solar and Stellar Astrophysics · Physics 2015-06-05 L. Podio , I. Kamp , D. Flower , C. Howard , G. Sandell , A. Mora , G. Aresu , S. Brittain , W. F. R. Dent , C. Pinte , G. J. White

We investigate the star formation activity in the molecular complex associated with the Galactic HII region Sh2-90, using radio-continuum maps obtained at 1280 MHz and 610 MHz, Herschel Hi-GAL observations at 70 -- 500 microns, and deep…

Solar and Stellar Astrophysics · Physics 2015-06-19 M. R. Samal , A. Zavagno , L. Deharveng , S. Molinari , D. K. Ojha , D. Paradis , J. Tigé , A. K. Pandey , D. Russeil