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相关论文: Large-scale CO (J=4-3) Mapping toward the Orion-A …

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We present the results of a wide-area mapping of the far-infrared continuum emission toward the Orion complex by using a Japanese balloon-borne telescope. The 155-um continuum emission was detected over a region of 1.5 deg^2 around the KL…

We present 13CO(J=1-0) line emission observations with the Nobeyama 45-m telescope toward the giant HII region NGC 604 in the spiral galaxy M 33. We detected 13CO(J=1-0) line emission in 3 major giant molecular clouds (GMCs) labeled as…

宇宙学与河外天体物理 · 物理学 2015-05-30 Kazuyuki Muraoka , Tomoka Tosaki , Rie Miura , Sachiko Onodera , Nario Kuno , Kouichiro Nakanishi , Hiroyuki Kaneko , Shinya Komugi

We aim to develop the Orion B Giant Molecular Cloud (GMC) as a local template for interpreting extra-galactic molecular line observations. We use the wide-band receiver at the IRAM-30m to spatially and spectrally resolve the Orion B GMC.…

We present maps and a catalogue containing the J=1-0 12CO parameters of 29 individual molecular clouds in the second-brightest LMC star formation complex, N11. In the southwestern part of N11, molecular clouds occur in a ring or shell…

Thermal emission from cold dust grains in giant molecular clouds can be used to probe the physical properties, such as density, temperature and emissivity in star-forming regions. We present the SCUBA-2 shared-risk observations at 450…

星系天体物理 · 物理学 2016-02-17 S. Coudé , P. Bastien , H. Kirk , D. Johnstone , E. Drabek-Maunder , S. Graves , J. Hatchell , E. L. Chapin , A. G. Gibb , B. Matthews

We present large area, fully-sampled maps of the Carina molecular cloud complex in the CO (J = 4 - 3) and neutral carbon [CI] 3P1 - 3P0 transitions. These data were obtained using the 1.7 meter diameter Antarctic Submillimeter Telescope and…

天体物理学 · 物理学 2016-08-30 Xiaolei Zhang , Youngung Lee , Alberto Bolatto , Antony A. Stark

The outer Galaxy presents an optimal setting for investigating molecular clouds and star formation in environments with low metallicity. A total of 72 Galactic edge clouds were surveyed using the CO\,(2--1) line with the IRAM\,30\,m…

A deep, wide-field, near-infrared imaging survey was used to construct an extinction map of the southeastern part of the California Molecular Cloud (CMC) with $\sim$ 0.5 arc min resolution. The same region was also surveyed in the…

星系天体物理 · 物理学 2015-05-27 S. Kong , C. J. Lada , E. A. Lada , C. Román-Zúñiga , J. H. Bieging , M. Lombardi , J. Forbrich , J. F. Alves

Giant molecular clouds contain supersonic turbulence that can locally heat small fractions of gas to over 100 K. We run shock models for low-velocity, C-type shocks propagating into gas with densities between 10^3 and 10^5 cm^(-3) and find…

星系天体物理 · 物理学 2016-08-23 A. Pon , M. J. Kaufman , D. Johnstone , P. Caselli , F. Fontani , M. J. Butler , I. Jiménez-Serra , A. Palau , J. C. Tan

The data from the Nobeyama Radio Observatory 45 m telescope Galactic Center CO survey have been analyzed to generate a compilation of molecular clouds with intense CO emission in this region. Clouds are identified in an automated manner…

天体物理学 · 物理学 2009-10-31 T. Oka , T. Hasegawa , F. Sato , M. Tsuboi , A. Miyazaki

Combining observations of multiple CO lines with radiative transfer modeling is a very powerful tool to investigate the physical properties of the molecular gas in galaxies. Using new observations as well as literature data, we provide the…

宇宙学与河外天体物理 · 物理学 2015-06-17 Selcuk Topal , Estelle Bayet , Martin Bureau , Timothy A. Davis , Wilfred Walsh

We present ALMA observations of the largest protoplanetary disk in the Orion Nebula, 114-426. Detectable 345 GHz (856 micron) dust continuum is produced only in the 350 AU central region of the ~1000 AU diameter silhouette seen against the…

We present J=2-1, J=3-2, J=4-3 12CO maps as well as J=2-1, J=3-2 13CO and 492 GHz [CI] measurements of the central region in M51. The distribution of CO is strongly concentrated towards the spiral arms. The center itself is poor in, though…

天体物理学 · 物理学 2009-11-11 F. P. Israel , R. P. J. Tilanus , F. Baas

We present observations of the CO isotopologues ($^{12}$CO, $^{13}$CO, and C$^{18}$O) toward the Galactic region with $169\arcdeg.75 \leqslant l \leqslant 174\arcdeg.75$ and $-0\arcdeg.75 \leqslant b \leqslant 0\arcdeg.5$, using the Purple…

星系天体物理 · 物理学 2019-08-22 Fang Xiong , Xuepeng Chen , Qizhou Zhang , Ji Yang , Min Fang , Miaomiao Zhang , Weihua Guo , Li Sun

We present an 11 arcsec resolution map of the central two parsecs of the Galaxy in the CO J =7->6 rotational transition. The CO emission shows rotation about Sgr A*, but also evidence for non-circular turbulent motion and a clumpy…

天体物理学 · 物理学 2009-11-10 C. M. Bradford , G. J. Stacey , T. Nikola , A. D. Bolatto , J. M. Jackson , M. L. Savage , J. A. Davidson

We present detections of the CO(J= 1-0) emission line in a sample of four massive star-forming galaxies at z~1.5-2.2 obtained with the Karl G. Jansky Very Large Array (VLA). Combining these observations with previous CO(2-1) and CO(3-2)…

星系天体物理 · 物理学 2014-06-27 M. Aravena , J. A. Hodge , J. Wagg , C. L. Carilli , E. Daddi , H. Dannerbauer , L. Lentati , D. A. Riechers , M. Sargent , F. Walter

We analyze the conditions for detection of CO(1-0) emission in the Large Magellanic Cloud (LMC), using the recently completed second NANTEN CO survey. In particular, we investigate correlations between CO integrated intensity and HI…

星系天体物理 · 物理学 2011-02-11 T. Wong , A. Hughes , Y. Fukui , A. Kawamura , N. Mizuno , J. Ott , E. Muller , J. L. Pineda , D. E. Welty , S. Kim , Y. Mizuno , M. Murai , T. Onishi

We have carried out sub-mm 12CO(J=3-2) observations of 6 giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC) with the ASTE 10m sub-mm telescope at a spatial resolution of 5 pc and very high sensitivity. We have identified 32…

The electron density ($n_{e^{-}}$) plays an important role in setting the chemistry and physics of the interstellar medium. However, measurements of $n_{e^{-}}$ in neutral clouds have been directly obtained only toward a few lines of sight…

星系天体物理 · 物理学 2021-07-16 P. Salas , M. R. Rugel , K. L. Emig , J. Kauffmann , K. M. Menten , F. Wyrowski , A. G. G. M. Tielens

We present the survey of $^{12}$CO/$^{13}$CO/C$^{18}$O (J=1-0) toward the California Molecular Cloud (CMC) within the region of 161.75$^{\circ} \leqslant l \leqslant$ 167.75$^{\circ}$,-9.5$^{\circ} \leqslant b \leqslant $-7.5$^{\circ}$,…

星系天体物理 · 物理学 2021-11-03 Weihua Guo , Xuepeng Chen , Jiancheng Feng , Li Sun , Chen Wang , Yang Su , Yan Sun , Yiping Ao , Shaobo Zhang , Xin Zhou , Lixia Yuan , Ji Yang