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The Small Magellanic Cloud (SMC) is the closest low-metallicity galaxy to the Milky Way where the dynamical state of molecular clouds can be analyzed. We present a CO(2-1) survey at 9 pc resolution obtained with the APEX telescope in an…

Astrophysics of Galaxies · Physics 2023-04-19 H. P. Saldaño , M. Rubio , A. D. Bolatto , C. Verdugo , K. E. Jameson , A. K. Leroy

This paper is the second of a series that tackles the properties of molecular gas in galaxies residing in clusters and their related large-scale structures. Out of 21 targeted fields, 19 galaxies were detected in CO(3-2) with the Atacama…

We report the discovery and characterization of a power law correlation between the local surface densities of Spitzer-identified, dusty young stellar objects and the column density of gas (as traced by near-IR extinction) in eight…

Solar and Stellar Astrophysics · Physics 2015-05-28 R. A. Gutermuth , J. L. Pipher , S. T. Megeath , P. C. Myers , L. E. Allen , T. S. Allen

We investigate the molecular gas properties of galaxies across the main sequence of star-forming (SF) galaxies in the local Universe using $^{12}$CO($J=1-0$) (hereafter $^{12}$CO) and $^{13}$CO($J=1-0$) ($^{13}$CO) mapping data of 147…

Understanding mass, size, and surface mass density of giant molecular clouds (GMCs) in galaxies is key to insights into star formation processes. We analyze these in M33 using Herschel dust and archival IRAM 30m telescope data, compared to…

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of $\mathrm{^{13}CO(J=1-0)}$ line and 104 GHz continuum emission from NGC 604, a giant HII region (GHR) in the nearby spiral galaxy M33. Our high spatial resolution…

Astrophysics of Galaxies · Physics 2021-05-12 S. P. Phiri , J. M. Kirk , D. Ward-Thompson , A. E. Sansom , G. J. Bendo

Aims: We characterize the molecular gas content using CO emission of a redshift-limited subsample of isolated galaxies from the AMIGA (Analysis of the interstellar Medium of Isolated GAlaxies) project. Methods: We present the 12CO(1-0) data…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 U. Lisenfeld , D. Espada , L. Verdes-Montenegro , N. Kuno , S. Leon , J. Sabater , N. Sato , J. Sulentic , S. Verley , M. S. Yun

We present ALMA CO(2-1) spectroscopy of 6 massive (log$_{10}$M$_{\rm{*}}/\rm{M}_\odot>$11.3) quiescent galaxies at $z\sim1.5$. These data represent the largest sample using CO emission to trace molecular gas in quiescent galaxies above…

I review some recent results about the molecular content of galaxies, obtained essentially from the CO lines, but also dense tracers, or the dust continuum emission. New results have been obtained on molecular cloud physics, and their…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 F. Combes

There exist extremely massive spiral galaxies in isolated environments, with stellar masses several times that of the Milky Way, yet their star formation rates (SFRs) are comparable to or even lower than that of the Milky Way. In this…

Astrophysics of Galaxies · Physics 2025-10-21 Yu Huang , Jiangtao Li , Yan Jiang , Ping Zhou , Jianghui Xu , Liyuan Lu , Yang Yang

We found high molecular fractions ($f_{\rm mol}$; ratio of the molecular to total gas surface densities) in three of five Virgo spiral galaxies in spite of their low total gas column density, based on $^{12}$CO$(J=1-0)$ observations with…

We are conducting COLD GASS, a legacy survey for molecular gas in nearby galaxies. Using the IRAM 30m telescope, we measure the CO(1-0) line in a sample of ~350 nearby (D=100-200 Mpc), massive galaxies (log(M*/Msun)>10.0). The sample is…

We use the ~370 square degrees data from the MWISP CO survey to study the vertical distribution of the molecular clouds (MCs) toward the tangent points in the region of l=[16,52]deg and |b|<5.1deg. The molecular disk consists of two…

Astrophysics of Galaxies · Physics 2021-04-14 Yang Su , Ji Yang , Qing-Zeng Yan , Shaobo Zhang , Hongchi Wang , Yan Sun , Zhiwei Chen , Chen Wang , Xin Zhou , Xuepeng Chen , Zhibo Jiang , Min Wang

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…

Astrophysics · Physics 2009-10-31 T. Oka , T. Hasegawa , F. Sato , M. Tsuboi , A. Miyazaki

We have observed 70 galaxies belonging to 45 Hickson compact groups in the CO(1-0) and CO(2-1) lines, in order to determine their molecular content. We detected 57 galaxies, corresponding to a detection rate of 81%. We compare the gas…

Astrophysics · Physics 2007-05-23 S. Leon , F. Combes , T. K. Menon

An analysis of large-area CO J=3-2 maps from the James Clerk Maxwell Telescope for 12 nearby spiral galaxies reveals low velocity dispersions in the molecular component of the interstellar medium. The three lowest luminosity galaxies show a…

Understanding how galaxies interact with the circumgalactic medium (CGM) requires determining how galaxies morphological and stellar properties correlate with their CGM properties. We report an analysis of 66 well-imaged galaxies detected…

The study of molecular clouds in galaxies beyond the Local Group is limited by the need to efficiently sample diverse galactic environments across galactic discs, typically resulting in a loss of resolution. Using a high-resolution dust…

Astrophysics of Galaxies · Physics 2025-03-12 H. Faustino Vieira , A. Duarte-Cabral , M. W. L. Smith , D. Colombo , T. A. Davis , Z. Bazzi

A summary of global properties and an evaluation of the equilibrium state of molecular regions in the outer Galaxy are presented from the decomposition of the FCRAO Outer Galaxy Survey and targeted 12CO and 13CO observations of four giant…

Astrophysics · Physics 2008-11-26 M. H. Heyer , J. M. Carpenter , R. L. Snell
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