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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…

Solar and Stellar Astrophysics · Physics 2016-08-17 William J. Fischer , Deborah L. Padgett , Karl L. Stapelfeldt , Marta Sewilo

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

OB associations are home to newly formed massive stars, whose turbulent winds and ionizing flux create H II regions rich with star formation. Studying the distribution and abundance of young stellar objects (YSOs) in these ionized bubbles…

Solar and Stellar Astrophysics · Physics 2021-11-17 Abby Mintz , Joseph L. Hora , Elaine Winston

Context. The classification of young stellar objects (YSOs) is typically done using the infrared spectral slope or bolometric temperature, but either can result in contamination of samples. More accurate methods to determine the…

Solar and Stellar Astrophysics · Physics 2016-01-27 M. T. Carney , U. A. Yıldız , J. C. Mottram , E. F. van Dishoeck , J. Ramchandani , J. K. Jørgensen

We have conducted a sensitive search down to the hydrogen burning limit for unextincted stars over $\sim$200 square degrees around Lambda Orionis and 20 square degrees around Sigma Orionis using the methodology of Koenig & Leisawitz (2014).…

Astrophysics of Galaxies · Physics 2015-09-16 Xavier Koenig , Lynne Hillenbrand , Deborah Padgett , Daniel DeFelippis

Classification of young stellar objects (YSOs) into different evolutionary stages helps us to understand the formation process of new stars and planetary systems. Such classification has traditionally been based on spectral energy…

Astrophysics of Galaxies · Physics 2018-09-05 Oskari Miettinen

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…

Solar and Stellar Astrophysics · Physics 2024-06-27 Jiaxun Li , Tinggui Wang

Identifying the young optically visible population in a star-forming region is essential for fully understanding the star formation event. In this paper, We identify 211 candidate members of the Perseus molecular cloud based on Gaia…

Astrophysics of Galaxies · Physics 2022-09-07 Xiao-Long Wang , Min Fang , Yu Gao , Hong-Xin Zhang , Gregory J. Herczeg , Hong-Jun Ma , En Chen , Xing-Yu Zhou

We performed a large-scale spectral energy distribution (SED) fitting analysis for young stellar objects (YSOs) in the Orion star formation complex (OSFC) to derive key physical parameters; temperature, luminosity, mass, and age, using SED…

Solar and Stellar Astrophysics · Physics 2025-02-27 Ilknur Gezer , Gábor Marton , Julia Roquette , Marc Audard , David Hernandez , Máté Madarász , Odysseas Dionatos

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…

Solar and Stellar Astrophysics · Physics 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 present spectral observations of 130 young stellar objects (YSOs) in the Serpens Cloud Core and NGC 1333 embedded clusters. The observations consist of near-IR spectra in the H and K-bands, from SpeX on the IRTF and far-red spectra (6000…

We present an analysis of near-infrared time-series photometry in J, H, and K bands for about 100 epochs of a 1 square degree region of the Lynds 1003/1004 dark cloud in the Cygnus OB7 region. Augmented by data from the Wide-field Infrared…

Solar and Stellar Astrophysics · Physics 2015-06-16 Scott J. Wolk , Thomas S. Rice , Colin A. Aspin

Variability in young stellar objects (YSOs) can be caused by various time-dependent phenomena associated with star formation, including accretion rates, geometric changes in the circumstellar disks, stochastic hydromagnetic interactions…

Using photometric data of infrared surveys, young stellar object (YSO) status is verified for 141 objects selected in our previous papers in the Cassiopeia and Camelopardalis segment of the Milky Way bounded by Galactic coordinates (l, b) =…

Solar and Stellar Astrophysics · Physics 2018-03-14 V. Straizys , A. Kazlauskas

We present a grid of radiation transfer models of axisymmetric young stellar objects (YSOs), covering a wide range of stellar masses (from 0.1Msun to 50Msun) and evolutionary stages (from the early envelope infall stage to the late…

We investigated the evolutionary stages and disk properties of 211 Young stellar objects (YSOs) across the Perseus cloud by modeling the broadband optical to mid-infrared (IR) spectral energy distribution (SED). By exploring the…

Solar and Stellar Astrophysics · Physics 2015-07-17 Hong-Xin Zhang , Yu Gao , Min Fang , Hai-Bo Yuan , Yinghe Zhao , Ruixiang Chang , Xuejian Jiang , Xiao-Wei Liu , A-Li Luo , Hongjun Ma , Zhengyi Shao , Xiaolong Wang

The Taurus region is one of the most extensively studied star-forming regions. Surveys indicate that the young stars in this region are comprised of Young Stellar Objects (YSOs) that cluster in groups associated with the molecular cloud…

Solar and Stellar Astrophysics · Physics 2024-12-04 Jiaming Liu , Min Fang , Chao Liu , Xiaolong Wang , Wenyuan Cui , Licai Deng

We present a method to analyze the spectral energy distributions (SEDs) of young stellar objects (YSOs). Our approach is to fit data with pre-computed 2-D radiation transfer models spanning a large region of parameter space. This allows us…

Astrophysics · Physics 2010-04-06 Thomas P. Robitaille , Barbara A. Whitney , Remy Indebetouw , Kenneth Wood

We use various analytical techniques to study Young Stellar Objects (YSOs) in an area of approximately $10' \times 10'$ in the IRAS 18456-0223 star-forming region. We use archival optical (Gaia DR3) and infrared (2MASS, UKIDSS, Spitzer,…

Solar and Stellar Astrophysics · Physics 2026-03-06 Nilesh Pandey , U. S. Kamath

We present a census of the population of deeply embedded young stellar objects (YSOs) in the Perseus molecular cloud complex based on a combination of Spitzer Space Telescope mid-IR data from the c2d legacy team and JCMT/SCUBA submillimeter…

Astrophysics · Physics 2008-11-26 Jes K. Jorgensen , Doug Johnstone , Helen Kirk , Philip C. Myers
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