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Related papers: Cold Molecular Gas in Merger Remnants. II. The pro…

200 papers

We present maps of atomic carbon [CI](1-0) and [CI](2-1) at a linear resolution ~1kpc scale for a sample of one HII, six LINER, three Seyfert and five starburst galaxies observed with Herschel. We compare spatial distributions of two [CI]…

Astrophysics of Galaxies · Physics 2019-08-14 Qian Jiao , Yinghe Zhao , Nanyao Lu , Yu Gao , Dragan Salak , Ming Zhu , Zhiyu Zhang , Xuejian Jiang , Qinghua Tan

We propose observations of the molecular gas distribution during the era of reionization. At $z \sim $ 6 to 8, $^{12}$CO$(J=1-0)$ line intensity results in a mean brightness temperature of about 0.5 $\mu$K with rms fluctuations of 0.1…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Yan Gong , Asantha Cooray , Marta B. Silva , Mario G. Santos , Phillip Lubin

We report on the galaxy MACSJ0032-arc at z=3.6314 discovered during the Herschel Lensing snapshot Survey of massive galaxy clusters, and strongly lensed by the cluster MACSJ0032.1+1808. The successful detections of its rest-frame UV,…

We present a statistical study on the [C I]($^{3} \rm P_{1} \rightarrow {\rm ^3 P}_{0}$), [C I] ($^{3} \rm P_{2} \rightarrow {\rm ^3 P}_{1}$) lines (hereafter [C I] (1$-$0) and [C I] (2$-$1), respectively) and the CO (1$-$0) line for a…

Astrophysics of Galaxies · Physics 2017-05-10 Qian Jiao , Yinghe Zhao , Ming Zhu , Nanyao Lu , Yu Gao , Zhi-Yu Zhang

We observed 146 Galactic clumps in HCN (4-3) and CS (7-6) with the Atacama Submillimeter Telescope Experiment (ASTE) 10-m telescope. A tight linear relationship between star formation rate and gas mass traced by dust continuum emission was…

We present the properties of the 12CO(1-0) and (3-2) line emission from the nuclei of 60 IR luminous SLUGS galaxies. This subsample is flux limited at S60 > 5.24 Jy with FIR luminosities mostly at LFIR > 10^10 Lo. The emission line…

Astrophysics · Physics 2007-05-23 Lihong Yao

We present Very Large Array observations of the 33 GHz radio continuum emission from 22 local ultraluminous and luminous infrared (IR) galaxies (U/LIRGs). These observations have spatial (angular) resolutions of 30--720 pc (0.07"-0.67") in…

Molecular emission lines are essential tools to shed lights on many questions regarding star formation in galaxies. Multiple molecular lines are particularly useful to probe different phases of star-forming molecular clouds. In this study,…

Astrophysics of Galaxies · Physics 2020-06-02 Selçuk Topal

Observations of dense molecular gas lie at the basis of our understanding of the density and temperature structure of protostellar envelopes and molecular outflows. We aim to characterize the properties of the protostellar envelope,…

Solar and Stellar Astrophysics · Physics 2015-05-14 T. A. van Kempen , E. F. van Dishoeck , M. R. Hogerheijde , R. Guesten

We present the results of our ALMA Cycle 0 observations, using HCN/HCO+/HNC J=4-3 lines, of six nearby luminous infrared galaxies with various energetic contributions from active galactic nuclei (AGNs) estimated from previous infrared…

Astrophysics of Galaxies · Physics 2015-06-19 Masatoshi Imanishi , Kouichiro Nakanishi

The central kiloparsec region of the Andromeda galaxy is relatively gas poor, while the interstellar medium appears to be concentrated in a ring-like structure at about 10 kpc radius. The central gas depletion has been attributed to a…

Astrophysics of Galaxies · Physics 2015-12-16 A. -L. Melchior , F. Combes

We present the spatially-resolved observations of HCN J = 1 -- 0 emission in the nearby spiral galaxy M51 using the IRAM 30 m telescope. The HCN map covers an extent of $4\arcmin\times5\arcmin$ with spatial resolution of $28\arcsec$, which…

Astrophysics of Galaxies · Physics 2015-09-23 Hao Chen , Yu Gao , Jonathan Braine , Qiusheng Gu

We present interferometric observations of CO lines (12CO(1-0, 2-1) and 13CO(1-0, 2-1)) and dense gas tracers (HCN(1-0), HCO+(1-0), HNC(1-0) and HNCO(4-3)) in two nearby edge-on barred lenticular galaxies, NGC 4710 and NGC 5866, with most…

Astrophysics of Galaxies · Physics 2016-09-21 Selcuk Topal , Martin Bureau , Timothy A. Davis , Melanie Krips , Lisa M. Young , Alison F. Crocker

This paper addresses the global molecular gas properties of a representative sample of galaxies hosting low-luminosity quasistellar objects. An abundant supply of gas is necessary to fuel both the active galactic nucleus and any…

Astrophysics · Physics 2007-06-20 T. Bertram , A. Eckart , S. Fischer , J. Zuther , C. Straubmeier , L. Wisotzki , M. Krips

Despite its major role in the evolution of the interstellar medium, the formation of high-mass stars (M > 10 Msol) is still poorly understood. Two types of massive star cluster precursors, the so-called Massive Dense Cores (MDCs), have been…

Astrophysics of Galaxies · Physics 2015-05-19 M. G. Marseille , F. F. S. van der Tak , F. Herpin , T. Jacq

The observational study of star-formation laws is paramount to disentangling the physical processes at work on local and global scales in galaxies. To this aim we have expanded the sample of extreme starbursts, represented by local LIRGs…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 S. Garcia-Burillo , A. Usero , A. Alonso-Herrero

The bright [CI] 1-0 and [CI] 2-1 lines of atomic carbon are becoming more and more widely employed tracers of the cold neutral gas in high-redshift galaxies. Here we present observations of these lines in the 11 galaxies of the set of…

Astrophysics of Galaxies · Physics 2019-04-03 N. Nesvadba , R. Canameras , R. Kneissl , S. Koenig , C. Yang , E. Le Floc'h , A. Omont , D. Scott

There is now convincing evidence that the intensity of HCN molecular line emission is enhanced around active galactic nuclei. In this paper we examine the specific case of the Seyfert galaxy NGC3227, for which there are subarcsecond…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 R. Davies , D. Mark , A. Sternberg

In this work we conclude the analysis of our CO line survey of Luminous Infrared Galaxies (LIRGs: L_{IR}>=10^{11}L_{sol}) in the local Universe (Paper\,I), by focusing on the influence of their average ISM properties on the total molecular…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Padelis P. Papadopoulos , Paul van der Werf , E Xilouris , Kate G. Isaak , Yu Gao

Many massive galaxies at the centres of relaxed galaxy clusters and groups have vast reservoirs of cool (~10,000 K) and cold (~100 K) gas. In many low redshift brightest group and cluster galaxies this gas is lifted into the hot ISM in…