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Related papers: Young Stellar Objects in the Massive Star Forming …

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Since the '80s the \textit{Einstein} observatory has shown the Young Stellar Objects (YSOs), emit X-rays with luminosities, in the 0.3--8 keV bandpass, up to $\rm 10^3$--$\rm 10^4$ times than the Sun and that the X-ray emission is highly…

Solar and Stellar Astrophysics · Physics 2023-04-05 Salvatore Sciortino

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

We present a comprehensive multi-wavelength study of the star-forming region NGC 1893 to explore the effects of massive stars on low-mass star formation. Using near-infrared colours, slitless spectroscopy and narrow-band $H\alpha$…

Astrophysics · Physics 2009-11-13 Saurabh Sharma , A. K. Pandey , D. K. Ojha , W. P. Chen , S. K. Ghosh , B. C. Bhatt , Maheswar , G. , Ram Sagar

The most recently formed young stellar objects (YSOs) in active star forming regions are excellent tracers of their parent cloud motion. Their positions and dynamics provide insight into cluster formation and constrain kinematic decoupling…

The HII complex N159 in the Large Magellanic Cloud (LMC) is used to study massive star formation in different environments, as it contains three giant molecular clouds (GMCs) that have similar sizes and masses but exhibit different…

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

The Spitzer Space Telescope mapped the Perseus molecular cloud complex with IRAC and MIPS as part of the c2d Spitzer Legacy project. This paper combines the observations from both instruments giving an overview of low-mass star formation…

Solar and Stellar Astrophysics · Physics 2015-08-06 Kaisa E. Young , Chadwick H. Young , Shih-Ping Lai , Michael M. Dunham , Neal J. Evans

The Massive Young Star Forming Complex in Infrared and X-ray (MYStIX) project provides a new census on stellar members of massive star forming regions within 4 kpc. Here the MYStIX Infrared Excess catalog (MIRES) and Chandra-based X-ray…

Solar and Stellar Astrophysics · Physics 2016-12-21 Gregory Romine , Eric D. Feigelson , Konstantin V. Getman , Michael A. Kuhn , Matthew S. Povich

AIMS: To study the properties of X-ray emissions from young stellar objects (YSOs), through their evolution from Class I to Class III and determine whether Class 0 protostars emit in X-rays. METHODS: A deep Chandra X-ray observation of the…

Astrophysics · Physics 2009-11-11 G. Giardino , F. Favata , G. Micela , S. Sciortino , E. Winston

We present a multiwavelength study of the NGC 281 complex which contains the young cluster IC 1590 at the center, using deep wide-field optical UBVI_c photometry, slitless spectroscopy along with archival data sets in the near-infrared…

Astrophysics of Galaxies · Physics 2015-06-04 Saurabh Sharma , A. K. Pandey , J. C. Pandey , N. Chauhan , K. Ogura , D. K. Ojha , J. Borrissova , H. Mito , T. Verdugo , B. C. Bhatt

We report the discovery of a star-forming loop around the young, Crab-like supernova remnant (SNR) G54.1+0.3 using the AKARI infrared satellite. The loop consists of at least eleven young stellar objects (YSOs) embedded in a ring-like…

The very inner structure of massive young stellar objects (YSOs) is difficult to trace. With conventional observational methods we identify structures still several hundreds of AU in size. However, the (proto-)stellar growth takes place at…

Astrophysics · Physics 2014-11-18 H. Linz , B. Stecklum , R. Follert , Th. Henning , R. van Boekel , A. Men'shchikov , I. Pascucci , M. Feldt

The Massive Young star-forming Complex Study in Infrared and X-rays (MYStIX) project requires samples of young stars that are likely members of 20 nearby Galactic massive star-forming regions. Membership is inferred from statistical…

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

We present star formation activity in the infrared dark cloud (IRDC) G53.2, a remarkable IRDC located at Galactic coordinates $(l,b)\sim(53^{\circ}.2,\,0^{\circ}.0)$ based on the census of young stellar object (YSO) candidates. IRDC G53.2…

Astrophysics of Galaxies · Physics 2015-06-23 Hyun-Jeong Kim , Bon-Chul Koo , Christopher J. Davis

The past decade has seen a rise in the use of Machine Learning methods in the study of young stellar evolution. This trend has led to a growing need for a comprehensive database of young stellar objects (YSO) that goes beyond…

Solar and Stellar Astrophysics · Physics 2025-10-08 J. Roquette , M. Audard , D. Hernandez , I. Gezer , G. Marton , C. Mas , M. Madarász , O. Dionatos

Cygnus OB2 is the nearest example of a massive star forming region, containing over 50 O-type stars and hundreds of B-type stars. We have analysed the properties of young stars in two fields in Cyg OB2 using the recently published deep…

Solar and Stellar Astrophysics · Physics 2015-05-18 Nicholas J. Wright , Jeremy J. Drake , Janet E. Drew , Jorick S. Vink

Wide-field searches for young stellar objects (YSOs) can place useful constraints on the prevalence of clustered versus distributed star formation. The Spitzer/IRAC Candidate YSO (SPICY) catalog is one of the largest compilations of such…

UCHII regions are an important phase in the formation and early evolution of massive stars and a key component of the interstellar medium. The main objectives of this work are to study the young stellar objects (YSOs) associated with the…

Solar and Stellar Astrophysics · Physics 2022-06-01 Naira Azatyan , Elena Nikoghosyan , Hayk Harutyunian , Daniel Baghdasaryan , Derenik Andreasyan

There is mounting evidence that the composition and structure of planetary systems are intimately linked to their birth environments. During the past decade, several spectral surveys probed the chemistry of the earliest stages of star…