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11 papers · 2 filters
Multi-wavelength study of triggered star formation around mid-infrared bubble N14
L. K. Dewangan, D. K. Ojha
We present multi-wavelength analysis around mid-infrared bubble N14 to probe the signature of triggered star formation as well as the formation of new massive star(s) and/or cluste…
Dense Gas in M33 (HerM33es)
C. Buchbender, C. Kramer, M. Gonzalez-Garcia +13
We aim to better understand the emission of molecular tracers of the diffuse and dense gas in giant molecular clouds and the influence that metallicity, optical extinction, density…
Deriving the velocity distribution of Galactic Dark Matter particles from rotation curve data
Pijushpani Bhattacharjee, Soumini Chaudhury, Susmita Kundu +1
The velocity distribution function (VDF) of the hypothetical Weakly Interacting Massive Particles (WIMPs), currently the most favored candidate for the Dark Matter (DM) in the Gala…
Star formation activity in the Galactic H II region Sh2-297
K. K. Mallick, D. K. Ojha, M. R. Samal +5
We present a multiwavelength study of the Galactic H II region Sh2-297, located in Canis Major OB1 complex. Optical spectroscopic observations are used to constrain the spectral ty…
Nitrogen hydrides in interstellar gas II. Analysis of Herschel/HIFI observations towards W49N and G10.6-0.4 (W31C)
C. M. Persson, M. De Luca, B. Mookerjea +14
We have used the Herschel-HIFI instrument to observe interstellar nitrogen hydrides along the sight-lines towards W49N and G10.6-0.4 in order to elucidate the production pathways l…
The chemistry of C3 & Carbon Chain Molecules in DR21(OH)
B. Mookerjea, G. Hassel, M. Gerin +14
(Abridged) We have observed velocity resolved spectra of four ro-vibrational far-infrared transitions of C3 between the vibrational ground state and the low-energy nu2 bending mode…
Triggered star formation around mid-infrared bubbles in G8.14+0.23 H II region
L. K. Dewangan, D. K. Ojha, B. G. Anandarao +2
Mid-infrared (MIR) shells or bubbles around expanding H II regions have received much attention due to their ability to initiate a new generation of star formation. We present mult…
A Multi-Wavelength High Resolution Study of the S255 Star Forming Region. General structure and kinematics
I. Zinchenko, S. -Y. Liu, Y. -N. Su +4
We present observational data for two main components (S255IR and S255N) of the S255 high mass star forming region in continuum and molecular lines obtained at 1.3 mm and 1.1 mm wi…
Star Formation and Young Population of the HII Complex Sh2-294
M. R. Samal, A. K. Pandey, D. K. Ojha +3
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…
Multiwavelength Study of NGC 281 Region
Saurabh Sharma, A. K. Pandey, J. C. Pandey +7
We present a multiwavelength study of the NGC 281 complex which contains the young cluster IC 1590 at the center, using deep wide-field optical UBVI_c photometry, slitless spectros…
The structure of hot gas in Cepheus B
B. Mookerjea, V. Ossenkopf, O. Ricken +6
By observing radiation-affected gas in the Cepheus B molecular cloud we probe whether the sequential star formation in this source is triggered by the radiation from newly formed s…