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相关论文: Studying the molecular gas towards a bright rimmed…

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We analyze the molecular gas and dust associated with the infrared dark cloud SDC 341.232-0.268 in order to investigate the characteristics and parameters of the gas, determine the evolutionary status of four embedded EGO candidates and…

星系天体物理 · 物理学 2020-01-15 M. M. Vazzano , C. E. Cappa , V. Firpo , C. H. López-Caraballo , M. Rubio , N. U. Duronea

We present infrared and millimeter observations of molecular gas, dust and ionized gas towards a sample of clouds distributed along the 500 central pc of the Galaxy. The clouds were selected to investigate the physical state, in particular…

天体物理学 · 物理学 2009-11-07 N. J. Rodriguez-Fernandez , J. Martin-Pintado , A. Fuente , T. L. Wilson

Using the Planck far-infrared and Arecibo GALFA 21-cm line surveys, we identified a set of isolated interstellar clouds (approximately degree-sized on the sky and comprising 100 solar masses) and assessed the ratio of gas mass to dust mass.…

星系天体物理 · 物理学 2015-10-07 William T. Reach , Carl Heiles , Jean-Philippe Bernard

We present a 154 pointing IRAM NOEMA mosaic of the CO(1-0) line emission in and around the nearby starburst galaxy M82. The observations, complemented by zero--spacing observations, reach a spatial resolution of $\sim$30 pc ($\sim…

We present a study of the molecular CO gas and mid/far infrared radiation arising from the environment surrounding the Wolf-Rayet (W-R) star 130. We use the multi-wavelength data to analyze the properties of the dense gas and dust, and its…

太阳与恒星天体物理 · 物理学 2015-05-27 S. Cichowolski , L. A. Suad , S. Pineault , A. Noriega-Crespo , E. M. Arnal , N. Flagey

We report on a study of the high-mass star formation in the the HII region W28A2 by investigating the molecular clouds extended over ~5-10 pc from the exciting stars using the 12CO and 13CO (J=1-0) and 12CO (J=2-1) data taken by the NANTEN2…

We have created a map of the large-scale infrared surface brightness in excess of that associated with the atomic interstellar medium, using region-by-region correlations between the far-infrared and 21-cm line surface brightness. Our study…

天体物理学 · 物理学 2009-10-30 William T. Reach , William F. Wall , Nils Odegard

We investigate the molecular gas content of z~6 quasar host galaxies using the IRAM / Northern Extended Millimeter Array. We target the 3mm dust continuum, and the line emission from CO(6-5), CO(7-6), [CI]2-1 in 10 infra-red-luminous…

We present 3 mm observations obtained with the IRAM 30-m telescope for ten nearby gas-rich active galaxies spanning three orders of magnitude in infrared luminosity. Emission lines of HCO+(1-0), HCN(1-0), and C2H(1-0) were simultaneously…

宇宙学与河外天体物理 · 物理学 2015-05-30 Xuejian Jiang , Junzhi Wang , Qiusheng Gu

The physical properties of molecular gas can be deduced from the analysis of line intensity ratios, most commonly of the CO isotopomers 12CO and 13CO. Barred galaxies, especially those with central starbursts, provide an excellent…

天体物理学 · 物理学 2007-05-23 S. Huettemeister , S. Aalto

Using the IRAM interferometer, we have observed the nearby starburst galaxy M82 with a 4.2" resolution (~70 pc) in the 1->0 line of 13CO and in the 2.6-mm continuum. The spatial distribution of the 13CO line shows the same gross features as…

天体物理学 · 物理学 2007-05-23 N. Neininger , M. Guelin , U. Klein , S. Garcia-Burillo , R. Wielebinski

The primary goal of this project was to use the given data of four emission lines from two ultra-luminous infrared galaxies to calculate the molecular gas mass and dynamical mass of each galaxy. These quantities can provide valuable…

高能天体物理现象 · 物理学 2023-10-30 Grishma Adenkar , Viktor Lipovka , Nihar Prabhala , Srikar Vakkalagadda

We performed a multi-wavelength study toward the filamentary cloud G47.06+0.26 to investigate the gas kinematics and star formation. We present the 12CO (J=1-0), 13CO (J=1-0) and C18O (J=1-0) observations of G47.06+0.26 obtained with the…

星系天体物理 · 物理学 2018-01-10 Jin-Long Xu , Ye Xu , Chuan-Peng Zhang , Xiao-Lan Liu , Naiping Yu , Chang-Chun Ning , Bing-Gang Ju

Using the Large Millimeter Telescope and the SEQUOIA 3~mm focal plane array, we have searched for molecular line emission from two atomic clouds associated with the Fermi Bubble of the Milky Way. Neither 12CO nor 13CO J=1-0 emission is…

星系天体物理 · 物理学 2025-03-12 M. Heyer , E. Di Teodoro , L. Loinard , F. J. Lockman , N. M. McClure-Griffiths , Q. D. Wang

We present high-resolution archival Atacama Large Millimeter/submillimeter Array (ALMA) CO J=3-2 and J=6-5 and HCO+ J=4-3 observations and new CARMA CO and 13CO J=1-0 observations of the luminous infrared galaxy NGC 1614. The…

星系天体物理 · 物理学 2015-06-23 Kazimierz Sliwa , Christine D. Wilson , Daisuke Iono , Alison Peck , Satoki Matsushita

OB type stars have strong ionizing radiation, and drive energetic winds. The ultraviolet (UV) radiation from ionizing stars may heat dust and ionize gas to sweep up an expanding bubble shell. This shell may be the result of feedback leading…

(Abridged) Bright-rimmed clouds (BRCs) are isolated molecular clouds located on the edges of evolved HII regions where star formation is thought may have been triggered. In this paper we investigate the current level of star formation…

星系天体物理 · 物理学 2009-11-13 J. S. Urquhart , L. K. Morgan , M. A. Thompson

Millimeter CO(1-0) interferometry and high resolution, Hubble Space Telescope (HST) 1.1, 1.6, and 2.2 micron imaging of the radio compact galaxy PKS 1345+12 are presented. With an infrared luminosity of 2x10^{12} L_sun, PKS 1345+12 is a…

天体物理学 · 物理学 2009-10-31 A. S. Evans , D. -C. Kim , J. M. Mazzarella , N. Z. Scoville , D. B. Sanders

We report CO detections in 17 out of 19 infrared ultraluminous QSO (IR QSO) hosts observed with the IRAM 30m telescope. The cold molecular gas reservoir in these objects is in a range of 0.2--2.1$\times 10^{10}M_\odot$ (adopting a…

宇宙学与河外天体物理 · 物理学 2015-06-04 X. Y. Xia , Y. Gao , C. -N. Hao , Q. H. Tan , S. Mao , A. Omont , B. O. Flaquer , S. Leon , P. Cox

12CO 1-0,2-1,4-3,7-6, and 13CO 1-0, 2-1, and 3-2 line was mapped with angular resolutions of 13" - 22" toward the nuclear region of starburst galaxy M82. The difference of lobe spacings in submillimeter (~15") and millimeter (~26") lines…

天体物理学 · 物理学 2007-05-23 R. Q. Mao , C. Henkel , A. Schulz , M. Zielinsky , R. Mauersberger , H. Stoerzer , T. L. Wilson , P. Gensheimer