Zobrazeno 11 - 20
of 168
pro vyhledávání: '"Kumar, M. S . N."'
Autor:
Teixeira, G. D. C., Kumar, M. S. N., Smith, L., Lucas, P. W., Morris, C., Borissova, J., Monteiro, M. J. P. F. G., Garatti, A. Caratti o, Peña, C. Contreras, Froebrich, D., Gameiro, J. F.
Publikováno v:
A&A 619, A41 (2018)
The VVV survey has allowed for an unprecedented number of multi-epoch observations of the southern Galactic plane. In a recent paper,13 massive young stellar objects(MYSOs) have already been identified within the highly variable(\Delta Ks > 1 mag) YS
Externí odkaz:
http://arxiv.org/abs/1809.04882
Autor:
Beltrán, M. T., Cesaroni, R., Rivilla, V. M., Sánchez-Monge, Á., Moscadelli, L., Ahmadi, A., Allen, V., Beuther, H., Etoka, S., Galli, D., Galván-Madrid, R., Goddi, C., Johnston, K. G., Kölligan, A., Kuiper, R., Kumar, M. S. N., Maud, L. T., Mottram, J. C., Peters, T., Schilke, P., Testi, L., van der Tak, F., Walmsley, C. M.
As part of our effort to search for circumstellar disks around high-mass stellar objects, we observed the well-known core G31.41+0.31 with ALMA at 1.4 mm with an angular resolution of~0.22" (~1700 au). The dust continuum emission has been resolved in
Externí odkaz:
http://arxiv.org/abs/1803.05300
Autor:
Lucas, P. W., Smith, L. C., Pena, C. Contreras, Froebrich, Dirk, Drew, Janet E., Kumar, M. S. N., Borissova, J., Minniti, D., Kurtev, R., Monguio, M.
We present a catalogue of 618 high amplitude infrared variable stars (1 < DeltaK < 5 mag) detected by the two widely separated epochs of 2.2 um data in the UKIDSS Galactic plane survey, from searches covering 1470 deg^2. Most were discovered by a sea
Externí odkaz:
http://arxiv.org/abs/1708.02680
High-amplitude variability in Young Stellar Objects (YSOs) is usually associated with episodic accretion events. It has not been observed so far in massive YSOs. Here, the high-amplitude variable star sample of ContrerasPe\~{n}a et al.(2016) has been
Externí odkaz:
http://arxiv.org/abs/1609.08711
Context. ALMA observations of the high-mass star-forming region G35.20-0.74N have revealed the presence of a Keplerian disk in core B rotating about a massive object of 18 Msun, as computed from the velocity field. The luminosity of such a massive st
Externí odkaz:
http://arxiv.org/abs/1606.03943
Autor:
Sánchez-Monge, Á., Beltrán, M. T., Cesaroni, R., Etoka, S., Galli, D., Kumar, M. S. N., Moscadelli, L., Stanke, T., van der Tak, F. F. S., Vig, S., Walmsley, C. M., Wang, K. -S., Zinnecker, H., Elia, D., Molinari, S., Schisano, E.
The present study aims at characterizing the massive star forming region G35.20N, which is found associated with at least one massive outflow and contains multiple dense cores, one of them recently found associated with a Keplerian rotating disk. We
Externí odkaz:
http://arxiv.org/abs/1406.4081
Autor:
Peña, C. Contreras, Lucas, P. W., Froebrich, D., Kumar, M. S. N., Goldstein, J., Drew, J. E., Adamson, A., Davis, C. J., Barentsen, G., Wright, N. J.
We present initial results of the first panoramic search for high-amplitude near-infrared variability in the Galactic Plane. We analyse the widely separated two-epoch K-band photometry in the 5th and 7th data releases of the UKIDSS Galactic Plane Sur
Externí odkaz:
http://arxiv.org/abs/1401.2336
We present a multiwavelength study of W40 star-forming region using IR observations in UKIRT JHK bands, Spitzer IRAC bands & Herschel PACS bands; 2.12 micron H2 narrow-band imaging; & radio observations from GMRT (610 & 1280 MHz), in a FoV of ~34'x40
Externí odkaz:
http://arxiv.org/abs/1309.7127
Autor:
Kumar, M. S. N.
The formation of the highest mass stars are thought to be dominated by instabilities resulting from gravitation and radiation. Instabilities due to gravitation are commonly demonstrated by observations of fragmentation, but those due to effects of ra
Externí odkaz:
http://arxiv.org/abs/1307.0437
Given the rarity of young O star candidates, compact HII regions embedded in dense molecular cores continue to serve as potential sites to peer into the details of high-mass star formation. To uncover the ionizing sources of the most luminous and com
Externí odkaz:
http://arxiv.org/abs/1307.0566