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At the highest stellar masses (log(\mstar) $\gtrsim$ 11.5 \msun), only a small fraction of galaxies are disk-like and actively star-forming objects. These so-called `super spirals' are ideal objects to better understand how galaxy evolution…

Astrophysics of Galaxies · Physics 2023-05-10 Ute Lisenfeld , Patrick M. Ogle , Philip N. Appleton , Thomas H. Jarrett , Blanca M. Moncada-Cuadri

We present high resolution images of the 12CO(2-1) emission in the central 1' (1 kpc) of NGC 5128 (Centaurus A), observed using the SMA. We elucidate for the first time the distribution and kinematics of the molecular gas in this region…

Astrophysics of Galaxies · Physics 2011-02-11 D. Espada , S. Matsushita , A. Peck , C. Henkel , D. Iono , F. P. Israel , S. Muller , G. Petitpas , Y. Pihlstroem , G. B. Taylor , Dinh-V-Trung

We present ALMA observations of the CO(1-0) line and 3-mm continuum emission in eight ultraluminous infrared (IR) quasi-stellar objects (QSOs) at z = 0.06-0.19. All eight IR QSO hosts are clearly resolved in their CO molecular gas emission…

Astrophysics of Galaxies · Physics 2020-01-08 Qing-Hua Tan , Yu Gao , Kotaro Kohno , Xiao-Yang Xia , Alain Omont , Cai-Na Hao , Shu-De Mao , Emanuele Daddi , Yong Shi , Ying-He Zhao , Pierre Cox

We present CO(1-0) and CO(2-1) Swedish-ESO Submillimetre Telescope (SEST) observations of the barred spiral galaxy M83 (NGC5236). The maps cover the entire optical disk. The CO emission is strongly peaked toward the nucleus, which breaks up…

Astrophysics · Physics 2009-11-10 A. A. Lundgren , T. Wiklind , H. Olofsson , G. Rydbeck

In this paper we study the molecular gas content of a representative sample of 67 of the most massive early-type galaxies in the local universe, drawn uniformly from the MASSIVE survey. We present new IRAM-30m telescope observations of 30…

We present a comparative study of molecular and ionized gas kinematics in nearby galaxies. These results are based on observations from the EDGE survey, which measured spatially resolved $^{12}$CO(J=1-0) in 126 nearby galaxies. Every galaxy…

The interstellar medium is crucial to understanding the physics of active galaxies and the coevolution between supermassive black holes and their host galaxies. However, direct gas measurements are limited by sensitivity and other…

Astrophysics of Galaxies · Physics 2018-03-07 Jinyi Shangguan , Luis C. Ho , Yanxia Xie

The process by which massive galaxies transition from blue, star-forming disks into red, quiescent galaxies remains one of the most poorly-understood aspects of galaxy evolution. In this investigation, we attempt to gain a better…

The [CII] 158 $\mu$m emission line and the underlying far-infrared (FIR) dust continuum are important tracers for studying star formation and kinematic properties of early galaxies. We present a survey of the [CII] emission lines and FIR…

The sub-kpc scale gas structure encodes key information of giant molecular cloud (GMC) formation. Therefore, we aim for a quantitative description of molecular gas structure across 150-1000 pc using a sample of 8984 GMCs from 40 galaxies…

The cluster environment has been shown to affect the molecular gas content of cluster members, yet a complete understanding of this often subtle effect has been hindered due to a lack of detections over the full parameter space of galaxy…

We present a quantitative and statistical analysis of the molecular gas morphology in 73 nearby galaxies using high spatial resolution CO ($J$ = 2-1) data obtained from the Atacama Large Millimeter/submillimeter Array (ALMA) by the PHANGS…

Astrophysics of Galaxies · Physics 2024-12-12 Takashi Yamamoto , Daisuke Iono , Toshiki Saito , Nario Kuno , Sophia K. Stuber , Daizhong Liu , Thomas G. Williams

We present Atacama Large Millimeter/submillimeter Array (ALMA) CO($J=2-1$) observations of two main-sequence star-forming galaxies at $z\sim1.47$ taken from the High-Z Emission Line Survey (HiZELS). These two systems have been previously…

Astrophysics of Galaxies · Physics 2019-06-17 J. Molina , Edo Ibar , I. Smail , A. M. Swinbank , E. Villard , A. Escala , D. Sobral , T. M. Hughes

We report the detection of 1 10^7 M_sun of molecular gas in the central region of the S0/E7 galaxy NGC4550, inferred from observations of CO(1-0) emission. Dust is detected in HST WFPC2 images and found to be asymmetrically distributed…

Astrophysics · Physics 2009-11-06 T. Wiklind , C. Henkel

The nearby system 4C12.50, also known as IRAS 13451+1217 and PKS 1345+12, is a merger of gas-rich galaxies with infrared and radio activity. It has a perturbed interstellar medium (ISM) and a dense configuration of gas and dust around the…

Astrophysics of Galaxies · Physics 2019-09-04 C. M. Fotopoulou , K. M. Dasyra , F. Combes , P. Salomé , M. Papachristou

We present a study of the cold molecular gas kinematics in the inner ~ 4-7 kpc (projected sizes) of three nearby Seyfert galaxies, with AGN luminosities of ~ 10$^{44}$ erg/s, using observations of the CO(2-1) emission line, obtained with…

We present high angular resolution ALMA CO(2-1) and 1.7 mm continuum observations of the far-infrared-bright galaxy PKS0023-26, which hosts a young radio source and a luminous optical AGN. Although young, the powerful radio source has grown…

Astrophysics of Galaxies · Physics 2021-12-08 Raffaella Morganti , Tom Oosterloo , Clive Tadhunter , Emmanuel P. Bernhard , J. B. Raymond Oonk

We study the effects of the local environment on the molecular gas content of a large sample of log($M_{*}$/$M_{\odot}$) $\gtrsim$ 10 star-forming and starburst galaxies with specific star-formation rates (sSFRs) on and above the main…

Astrophysics of Galaxies · Physics 2020-06-16 Behnam Darvish , Nick Z. Scoville , Christopher Martin , Bahram Mobasher , Tanio Diaz-Santos , Lu Shen

We consider the relationship between molecular-gas and star-formation surface densities in 19 morphologically defined E/S0s with stellar mass <~ 4x10^10 M_sun, paying particular attention to those found on the blue sequence in color vs.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Lisa H. Wei , Stuart N. Vogel , Sheila J. Kannappan , Andrew J. Baker , David V. Stark , Seppo Laine

We present the results from ALMA CO(3-2) observations of 66 Halpha-selected galaxies in three protoclusters around radio galaxies, PKS1138-262 (z=2.16) and USS1558-003 (z=2.53), and 4C23.56 (z=2.49). The pointing areas have an overdensity…

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