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Related papers: Star formation in globules in IC1396

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The Sh2-294 HII region ionized by a single B0V star features several infrared excess sources, a photodissociation region, and also a group of reddened stars at its border. The star formation scenario in the region seems to be quite complex.…

Astrophysics of Galaxies · Physics 2015-06-05 M. R. Samal , A. K. Pandey , D. K. Ojha , N. Chauhan , J. Jose , B. Pandey

We present the first results from our survey of the star-forming complex W3, combining VRI photometry with multiobject spectroscopy to identify and characterize the high-mass stellar population across the region. With 79 new spectral…

Solar and Stellar Astrophysics · Physics 2015-11-04 Megan M. Kiminki , Jinyoung Serena Kim , Micaela B. Bagley , William H. Sherry , George H. Rieke

We present deep, wide-field J, H and Ks images taken with IRIS2 on the Anglo Australian Telescope, towards the massive star formation region G305.2+0.2. Combined with 3.6, 4.5, 5.8 and 8.0 micron data from the GLIMPSE survey on the Spitzer…

Astrophysics · Physics 2008-11-26 S. N. Longmore , M. Maercker , S. Ramstedt , M. G. Burton

We report the discovery of a rich population of low mass stars in the young, massive star forming region N66/NGC346 in the Small Magellanic Cloud, from deep V, I and H alpha images taken with the HST/ACS. These stars have likely formed…

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

A study of star formation is carried out on 35 giant extragalactic HII regions (GEHRs) in seven galaxies using optical photometric data in BVR broad bands and in the emission line of H alpha. Interstellar extinction, metallicity and nebular…

Astrophysics · Physics 2009-10-28 Y. D. Mayya , T. P. Prabhu

We present a study of complexes of young massive star clusters (YMCs), embedded in extragalactic giant HII regions, based on the coupling of spectroscopic with photometric and spectrophotometric observations of about 100 star forming…

We present a multiwavelength investigation of star formation activity towards the southern H II regions associated with IRAS 17160-3707, located at a distance of 6.2 kpc with a bolometric luminosity of 830000 Lsun.The ionised gas…

Astrophysics of Galaxies · Physics 2016-11-15 G. Nandakumar , V. S. Veena , S. Vig , A. Tej , S. K. Ghosh , D. K. Ojha

We investigate the young stellar population in and near the cometary globule Ori,I-2. The analysis is based on deep Nordic Optical Telescope R-band and H-alpha images, JCMT SCUBA 450 and 850 micron images combined with near-infrared 2MASS…

Astrophysics of Galaxies · Physics 2014-11-20 B. Mookerjea , G. Sandell

Young star clusters consisting of massive stars are the ideal sites to study the star formation processes and influence of massive stars on the subsequent star formation. NGC 1893 is a young star cluster associated with the HII region…

Solar and Stellar Astrophysics · Physics 2022-02-09 Neelam Panwar , Amit Kumar , S. B. Pandey

We present VI photometry of the metal-poor inner halo globular clusters NGC6293 and NGC6541 using the planetary camera of the WFPC2 on board HST. Our color-magnitude diagrams of the clusters show well-defined BHB populations, consistent…

Astrophysics · Physics 2008-11-26 Jae-Woo Lee , Bruce W. Carney

Context. The formation and early evolution of high- and intermediate-mass stars towards the main sequence involves the interplay of stars in a clustered and highly complex environment. To obtain a full census of this interaction, the…

Solar and Stellar Astrophysics · Physics 2015-05-28 K. M. Maaskant , A. Bik , L. B. F. M. Waters , L. Kaper , Th. Henning , E. Puga , M. Horrobin , J. Kainulainen

Using the multiwavelength data sets, we studied the star formation activity in H II region Sh 2-61 (hereafter S61). We identified a clustering in the region and estimated the membership using the Gaia proper motion data. The physical…

Astrophysics of Galaxies · Physics 2023-08-16 Rakesh Pandey , Saurabh Sharma , Lokesh Dewangan , Aayushi Verma , Tapas Baug , Harmeen Kaur , Arpan Ghosh

The circumnuclear star-forming ring of the barred spiral galaxy NGC 1097 provides a unique laboratory to study star formation under extreme conditions. This work aims to derive the physical properties of the circumnuclear star-forming…

Astrophysics of Galaxies · Physics 2026-02-11 Sandra Zamora , Angeles I. Díaz , Asier Castrillo

Our goal is to identify bipolar HII regions and to understand their morphology, their evolution, and the role they play in the formation of new generations of stars. We use the Spitzer and Herschel Hi-GAL surveys to identify bipolar HII…

IC 1396 is a relatively nearby (750 pc), large (>2 deg), HII region ionized by a single O6.5V star and containing bright-rimmed cometary globules. We have made the first arcmin resolution images of atomic hydrogen toward IC 1396, and have…

Astrophysics · Physics 2016-08-30 G. H. Moriarty-Schieven , T. Xie , N. A. Patel

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

We use the HB morphology of 48 Galactic GCs to study the radial distributions of the different stellar populations known to exist in globular clusters. Assuming that the (extremely) blue HB stars correspond to stars enriched in Helium and…

The supernova remnant (SNR) G357.7+0.3 appears to have caused considerable shredding of the local interstellar medium (ISM), leading to the formation of multiple cloud fragments having bright rims and cometary structures. We investigate…

Astrophysics of Galaxies · Physics 2010-08-26 J. P. Phillips , R. A. Marquez-Lugo

Small amounts of star formation in elliptical galaxies are suggested by several results: surprisingly young ages from optical line indices, cooling X-ray gas, and mid-IR dust emission. Such star formation has previously been difficult to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 H. Alyson Ford , Joel N. Bregman