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We present a multi-wavelength study of the star forming region ISOSS J 20298+3559, which was identified by a cross-correlation of cold compact sources from the 170 micron ISOPHOT Serendipity Survey (ISOSS) database coinciding with objects…

Astrophysics · Physics 2009-11-07 O. Krause , D. Lemke , L. V. Toth , U. Klaas , M. Haas , M. Stickel , R. Vavrek

We present medium-resolution (R $\sim$ 4000) YJ, H \& K band spectroscopy of candidate young stellar objects (YSOs) in NGC~346, the most active star-formation region in the metal-poor (Z = 1/5 Z$_{\sun}$) Small Magellanic Cloud. The spectra…

Solar and Stellar Astrophysics · Physics 2022-09-14 O. C. Jones , M. Reiter , R. Sanchez-Janssen , C. J. Evans , C. S. Robertson , M. Meixner , B. Ochsendorf

Most stars are born in rich young stellar clusters (YSCs) embedded in giant molecular clouds. The most massive stars live out their short lives there, profoundly influencing their natal environments by ionizing HII regions, inflating…

We present observations of the star formation region NGC 7129 taken with the Multiband Imaging Photometer for Spitzer (MIPS). A significant population of sources, likely pre-main sequence members of the young stellar cluster, is revealed…

The rarity of young massive stars combined with the fact that they are often deeply embedded has limited the understanding of their formation. Ground based mid-infrared (IR) interferometry is one way of securing the spatial resolution…

Solar and Stellar Astrophysics · Physics 2019-05-08 A. J. Frost , R. D. Oudmaijer , W. J. de Wit , S. L. Lumsden

We carried out deep and wide-field near- and mid-infrared observations for a sample of 8 bright-rimmed clouds (BRCs). Supplemented with the $Spitzer$ archival data, we have identified and classified 44 to 433 young stellar objects (YSOs)…

Solar and Stellar Astrophysics · Physics 2016-05-04 Saurabh Sharma , A. K. Pandey , J. Borissova , D. K. Ojha , V. D. Ivanov , K. Ogura , N. Kobayashi , R. Kurtev , M. Gopinathan , Ram Kesh Yadav

We present a multi-wavelength study to analyse the star formation process associated with the mid-infrared bubble CN 148 (H II region G10.3-0.1), which harbors an O5V-O6V star. The arc-shaped distribution of molecular CO(2-1) emission, the…

Astrophysics of Galaxies · Physics 2015-06-23 L. K. Dewangan , D. K. Ojha , J. M. C. Grave , K. K. Mallick

Spitzer IRAC images (3.6, 4.5, 5.8 and 8.0$\mu$m) and photometry of the star forming region M8 are presented. IRAC photometry reveals ongoing star formation in the M8 complex, with 64 Class 0/I and 168 Class II sources identified in several…

Astrophysics of Galaxies · Physics 2010-05-10 L. K. Dewangan , B. G. Anandarao

Research on young stellar populations is essential to understand the properties of embedded clusters and advance theories of their formation. This has driven advancements in methodologies for star detection, leading to the development of…

Solar and Stellar Astrophysics · Physics 2025-11-18 E. Nikoghosyan , D. Baghdasaryan , D. Andreasyan , N. Azatyan , A. Samsonyan , A. Yeghikyan

We present and categorize Spitzer IRS spectra of 294 objects in the Large Magellanic Cloud (LMC) to create the largest and most complete catalog of massive young stellar object (YSO) spectra in the LMC. Target sources were identified from…

Rich in HII regions, giant molecular clouds are natural laboratories to study massive stars and sequential star formation. The Galactic star forming complex W33 is located at l=~12.8deg and at a distance of 2.4 kpc, has a size of ~10 pc and…

We present results from JHKs imaging of the densest region of the W49 molecular cloud. In a recent paper (Alves & Homeier 2003), we reported the detection of (previously unknown) massive stellar clusters in the well-known giant radio HII…

Astrophysics · Physics 2009-11-10 N. L. Homeier , J. Alves

Spitzer IRAC observations and stellar photometric catalogs are presented for the Massive Young Star-Forming Complex Study in the Infrared and X-ray (MYStIX). MYStIX is a multiwavelength census of young stellar members of twenty nearby (d <…

Solar and Stellar Astrophysics · Physics 2016-11-25 Michael A. Kuhn , Matthew S. Povich , Kevin L. Luhman , Konstantin V. Getman , Heather S. Busk , Eric D. Feigelson

The luminous Young Stellar Object (YSO) IRAS 07422-2001 is studied in the infrared. We discover star forming activity in embedded clusters located in a cloud detected at mid-IR wavelengths in emission. Multiple outflows are discovered from…

Solar and Stellar Astrophysics · Physics 2015-06-04 Watson P. Varricatt

We present results of an infrared study of the molecular cloud Lynds 1340, forming three groups of low and intermediate-mass stars. Our goals are to identify and characterise the young stellar population of the cloud, study the…

Solar and Stellar Astrophysics · Physics 2016-06-09 M. Kun , G. Wolf-Chase , A. Moór , D. Apai , Z. Balog , J. O'Linger-Luscusk , G. Moriarty-Schieven

The study of Young Stellar Objects (YSOs) is one of the most exciting topics that can be undertaken by long baseline optical interferometry. The magnitudes of these objects are at the edge of capabilities of current optical interferometers,…

Astrophysics · Physics 2009-11-07 Fabien Malbet

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

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

We present the results from a survey, designed to investigate the accretion process of massive young stellar objects (MYSOs) through near infrared narrow band imaging using the H$_2$ $\nu$=1-0 S(1) transition filter. A sample of 353 Massive…

Solar and Stellar Astrophysics · Physics 2015-10-02 Felipe Navarete , Augusto Damineli , Cassio L. Barbosa , Robert D. Blum

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
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