منابع مشابه
Water maser emission in IC 342
The detection of 22GHz water vapor emission from IC 342 is reported, raising the detection rate among northern galaxies with IRAS point source fluxes S100μm > 50 Jy to 16%. The maser, associated with a star forming region ∼10–15 west of the nucleus, consists of a single 0.5 kms wide feature and reaches an isotropic luminosity of 10 L⊙ (D=1.8Mpc). If the time variability is intrinsic, the maser ...
متن کاملDense gas in nearby galaxies XV . Hot ammonia in NGC 253 , Maffei 2 and IC 342
The detection of NH3 inversion lines up to the (J,K) = (6, 6) level is reported toward the central regions of the nearby galaxies NGC253, Maffei 2, and IC 342. The observed lines are up to 406K (for (J,K) = (6, 6)) and 848K (for the (9, 9) transition) above the ground state and reveal a warm (Tkin = 100 . . . 140K) molecular component toward all galaxies studied. The tentatively detected (J,K) ...
متن کاملMolecular Gas and Star Formation in the Nucleus of IC 342: CO and Millimeter Continuum Imaging
We present high resolution maps (∼ 2′′) maps of the J=1-0 and J=2-1 transitions of CO in the central ∼ 150 pc of the gas-rich nucleus of IC 342, made with the Owens Valley Millimeter Array. From the CO maps we are able to obtain the most accurate map of NH2 to date for IC 342. Due to their low opacities, the transitions of CO give a more reliable estimate of the true molecular gas column densit...
متن کاملSpatially Resolved Chemistry in Nearby Galaxies. I. the Center of Ic 342
We have imaged emission from the millimeter lines of eight molecules—C2H, C S, N2H , CH3OH, HNCO, HNC, HC3N, and SO—in the central half-kiloparsec of the nearby spiral galaxy IC 342. The 5 00 ( 50 pc) resolution images were made with the Owens Valley Millimeter Array. Using these and previously published CO and HCN images, we obtain a picture of the chemistry within the nuclear region on the si...
متن کاملCI and CO in the nearby spiral galaxies IC 342 and Maffei 2
We present J=2–1, J=3–2, J=4–3 CO and 492 GHz [CI] maps as well as J=2–1 and J=3–2 CO measurements of the central regions in the nearby Sc galaxies IC 342 and Maffei 2. In both galaxies. the distribution of CO and [CI] is strongly concentrated towards the center. These centers harbour modest starbursts. Both galaxies have nearly identical CO transitional ratios but the relative intensities of t...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2012
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201218935