Zobrazeno 31 - 40
of 168
pro vyhledávání: '"Kumar, M. S . N."'
IRAS 21413+5442 and IRAS 21407+5441 are two massive star forming regions of high luminosity, likely associated with each other. Near-infrared photometry on these two IRAS sources was performed at UKIRT using the UFTI under excellent seeing conditions
Externí odkaz:
http://arxiv.org/abs/0808.1812
Akademický článek
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Publikováno v:
Mon.Not.Roy.Astron.Soc. 389 (2008) 1209
The young stellar population data of the Perseus, Ophiuchus and Serpens molecular clouds are obtained from the Spitzer c2d legacy survey in order to investigate the spatial structure of embedded clusters using the nearest neighbour and minimum spanni
Externí odkaz:
http://arxiv.org/abs/0805.2049
Autor:
Kumar, M. S. N., Grave, J. M. C.
The Spitzer-GLIMPSE point source catalog and images have been used to study a sample of 381 massive protostellar candidates. IRAC-Point source photometry was used to analyse colours, magnitudes and spectral indicies of the infrared counterparts (IRCs
Externí odkaz:
http://arxiv.org/abs/0802.2073
Autor:
Acosta, Eduardo de la Fuente, Kurtz, Stanley E., Kumar, M. S. N., Franco, Jose, Porras, Alicia, Kemp, Simon N.
Here we present a brief overview of UC HII regions with EE (UC HII+EE) including our most recent effort aimed at searching for UC HII regions associated with extended emission.
Comment: To appear in proceedings of the Puerto Vallarta Conference
Comment: To appear in proceedings of the Puerto Vallarta Conference
Externí odkaz:
http://arxiv.org/abs/0710.4360
Autor:
Kumar, M. S. N., Schmeja, S.
Publikováno v:
Astron.Astrophys. 471 (2007) L33
Aims: Some theoretical scenarios suggest the formation of brown dwarfs as ejected stellar embryos in star-forming clusters. Such a formation mechanism can result in different spatial distributions of stars and substellar objects. We aim to investigat
Externí odkaz:
http://arxiv.org/abs/0706.3328
Autor:
Kumar, M. S. N., Grave, J. M. C.
Publikováno v:
Astron.Astrophys.472:155-161,2007
The GLIMPSE archive was used to obtain 3.6--8.0micron, point source photometry and images for 381 massive protostellar candidates lying in the Galactic mid-plane. The colours, magnitudes and spectral indicies of sources in each of the 381 target fiel
Externí odkaz:
http://arxiv.org/abs/0705.4399
Autor:
Grave, J. M. C., Kumar, M. S. N.
Aims: We test the technique of spectro-astrometry as a potential method to investigate the close environment of massive young stars. Method: Archival VLT near infrared K band spectra (R=8900) of three massive young stellar objects and one Wolf-Rayet
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612133
Publikováno v:
Mon.Not.Roy.Astron.Soc.374:29-53,2007
We present wide-field near-infrared images of the DR21/W75 high-mass star forming region, obtained with the Wide Field Camera, WFCAM, on the United Kingdom Infrared Telescope. Broad-band JHK and narrow-band H2 1-0S(1) images are compared to archival
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610186
Publikováno v:
Mon.Not.Roy.Astron.Soc.374:54-62,2007
Wide field near-infrared observations and Spitzer Space Telescope IRAC observations of the DR21/W75 star formation regions are presented. The photometric data are used to analyse the extinction, stellar content and clustering in the entire region by
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610105