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Related papers: Large-Scale Structure of the Molecular Gas in Taur…

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The FCRAO Survey of the Taurus Molecular Cloud observed the 12CO and 13CO J=1-0 emission from 98 square degrees of this important, nearby star forming region. This set of data with 45" resolution comprises the highest spatial dynamic range…

The most extensive survey of carbon monoxide (CO) gas in the Taurus molecular cloud relied on $^{12}$CO and $^{13}$CO $J=1 \rightarrow 0$ emission only, distinguishing the region where $^{12}$CO is detected without $^{13}$CO (named mask 1…

Astrophysics of Galaxies · Physics 2023-08-02 Yan Duan , Di Li , Laurent Pagani , Paul F. Goldsmith , Tao-Chung Ching , Chen Wang , Jinjin Xie

Young stars form in molecular cores, which are dense condensations within molecular clouds. We have searched for molecular cores traced by $^{13}$CO $J=1\to 0$ emission in the Taurus molecular cloud and studied their properties. Our data…

Astrophysics of Galaxies · Physics 2015-06-05 Lei Qian , Di Li , Paul Goldsmith

We study four lines of sight that probe the transition from diffuse molecular gas to molecular cloud material in Taurus. Measurements of atomic and molecular absorption are used to infer the distribution of species and the physical…

Studying the atomic-to-molecular transition is essential for understanding the evolution of interstellar medium. The linear edge of Taurus molecular cloud, clearly identified in the $^{13}$CO(1-0) intensity map, serves as an ideal site for…

Astrophysics of Galaxies · Physics 2025-04-03 Ningyu Tang , Feihang Miao , Gan Luo , Di Li , Junzhi Wang , Fujun Du , Donghong Wu , Shu Liu

This paper examines the density and velocity structure of envelopes around young stellar objects through submillimeter continuum imaging of four objects in Taurus and previously obtained molecular-line data. Observations carried out with…

Astrophysics · Physics 2009-10-31 Michiel R. Hogerheijde , Goeran Sandell

(abridged) We report a study of the relation between dust and gas over a 100deg^2 area in the Taurus molecular cloud. We compare the H2 column density derived from dust extinction with the CO column density derived from the 12CO and 13CO J=…

Astrophysics of Galaxies · Physics 2010-09-07 Jorge L. Pineda , Paul F. Goldsmith , Nicholas Chapman , Ronald L. Snell , Di Li , Laurent Cambresy , Chris Brunt

We present observations and analysis of the low-mass star-forming region, Taurus Molecular Cloud-1 (TMC-1). CS ($J$=2-1)/N$_2$H$^+$ ($J$=1-0) and C$^{17}$O ($J$=2-1)/C$^{18}$O ($J$=2-1) were observed with FCRAO (Five College Radio Astronomy…

Astrophysics of Galaxies · Physics 2017-04-26 Yunhee Choi , Jeong-Eun Lee , Tyler L. Bourke , Neal J. Evans

As the first step of a multi-wavelength investigation into the relationship between young stellar clusters and their environment we present fully-sampled maps in the J=1--0 lines of 13CO and C18O and the J=2--1 line of C18O for a selected…

Astrophysics · Physics 2009-11-07 Naomi A. Ridge , T. L. Wilson , S. T. Megeath , L. E. Allen , P. C. Myers

We have carried out a search for filamentary structures in the Taurus molecular cloud using $\rm^{13}CO$ line emission data from the FCRAO survey of $\rm \sim100 \, deg^2$. We have used the topological analysis tool, DisPerSe, and…

Solar and Stellar Astrophysics · Physics 2016-02-04 G. V. Panopoulou , K. Tassis , P. F. Goldsmith , M. H. Heyer

New large-scale CO surveys of the first and second Galactic quadrants and the nearby molecular cloud complexes in Orion and Taurus, obtained with the CfA 1.2 m telescope, have been combined with 31 other surveys obtained over the past two…

Astrophysics · Physics 2009-10-31 T. M. Dame , Dap Hartmann , P. Thaddeus

We attempt to determine the molecular composition of disks around young low-mass stars in the $\rho$ Oph region and to compare our results with a similar study performed in the Taurus-Auriga region. We used the IRAM 30 m telescope to…

Solar and Stellar Astrophysics · Physics 2015-06-03 L. Reboussin , S. Guilloteau , M. Simon , N. Grosso , V. Wakelam , E. Di Folco , A. Dutrey , V. Piétu

Maps of estimated dust column density in molecular clouds are usually assumed to reliably trace the total gas column density structure. In this work we present results showing a clear discrepancy between the dust and the gas distribution in…

We present [Ci] and [Cii] observations of a linear edge region in the Taurus molecular cloud, and model this region as a cylindrically symmetric PDR exposed to a low-intensity UV radiation field. The sharp, long profile of the linear edge…

Astrophysics of Galaxies · Physics 2015-06-22 Matthew Orr , Jorge Pineda , Paul Goldsmith

We present high resolution maps ($\sim 2^{''}$) maps of the J=1-0 and J=2-1 transitions of C$^{18}$O in the central $\sim 150$ pc of the gas-rich nucleus of IC 342, made with the Owens Valley Millimeter Array. From the C$^{18}$O maps we are…

Astrophysics · Physics 2009-11-06 David S. Meier , Jean L. Turner

As a part of the Milky Way Imaging Scroll Painting (MWISP) survey, we performed a simultaneous 12CO(1-0), 13CO(1-0), C18O(1-0) mapping toward molecular clouds in a region encompassing 3.75 square degrees. We reveal three molecular clouds,…

Astrophysics of Galaxies · Physics 2016-03-30 Y. Gong , R. Q. Mao , M. Fang , S. B. Zhang , Y. Su , J. Yang , Z. B. Jiang , Y. Xu , M. Wang , Y. Wang , D. R. Lu , J. X. Sun

We used the KOSMA 3m telescope to map the core 7'x5' of the Galactic massive star forming region W3Main in the two fine structure lines of atomic carbon and four mid-J transitions of CO and 13CO. The maps are centered on the luminous…

Astrophysics · Physics 2009-11-10 C. Kramer , H. Jakob , B. Mookerjea , N. Schneider , M. Bruell , J. Stutzki

We observed a 10x20 pc region of the molecular cloud M17 in the 12CO and 13CO J=3-2 and J=2-1 transitions to determine their global behavior and to assess the reliability of using ratios of CO line intensities integrated over an entire…

Astrophysics · Physics 2009-10-31 C. D. Wilson , J. E. Howe , M. L. Balogh

We present Nobeyama 45m telescope C18O, 13CO, and 12CO(1-0) mapping observations towards an interstellar filament in the Taurus molecular cloud. We investigate the gas velocity structure along the filament and in its surrounding parent…

Astrophysics of Galaxies · Physics 2018-09-26 Doris Arzoumanian , Yoshito Shimajiri , Shu-ichiro Inutsuka , Tsuyoshi Inoue , Kengo Tachihara

After the morphological classification of the 18,190 $^{12}$CO molecular clouds, we further investigate the properties of their internal molecular gas structures traced by the $^{13}$CO($J=$ 1$-$0) line emissions. Using three different…

Astrophysics of Galaxies · Physics 2022-08-17 Lixia Yuan , Ji Yang , Fujun Du , Yang Su , Xunchuan Liu , Shaobo Zhang , Yan Sun , Xin Zhou , Qing-Zeng Yan , Yuehui Ma
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