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We make use of our 'minimal' cold interstellar medium (ISM) emission line model that predicts the molecular and atomic line emission per unit dense, star-forming gas mass (Geach & Papadopoulos 2012; Paper I) to examine the utility of key…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Padelis P. Papadopoulos , James E. Geach

Using the VLA and ALMA, we have obtained CO(2-1), [C II], [N II] line emission and multiple dust continuum measurements in a sample of "normal" galaxies at $z=5-6$. We report the highest redshift detection of low-$J$ CO emission from a…

Astrophysics of Galaxies · Physics 2019-09-25 Riccardo Pavesi , Dominik A. Riechers , Andreas L. Faisst , Gordon J. Stacey , Peter L. Capak

Galaxies undergoing formation and evolution can now be observed over a time baseline of some 12 Gyr. An inherent difficulty with high-redshift observations is that the objects are very faint and the best resolution (HST) is only ~0.5 kpc.…

Astrophysics · Physics 2016-01-27 Garth D. Illingworth , Rychard J. Bouwens

Rest-frame mid- to far-infrared spectroscopy is a powerful tool to study how galaxies formed and evolved, because a major part of their evolution occurs in heavily dust enshrouded environments, especially at the so-called Cosmic Noon. Using…

Astrophysics of Galaxies · Physics 2022-06-08 Sabrina Mordini , Luigi Spinoglio , Juan Antonio Fernández-Ontiveros

We present ALMA 870um and JCMT SCUBA2 850um dust continuum observations of a sample of optically dark and strongly lensed galaxies in the cluster fields. The ALMA and SCUBA2 observations reach a median rms of about 0.11 mJy and 0.44 mJy,…

We study the kinematical properties of galaxies in the Epoch of Reionization via the [CII] 158$\mu$m line emission. The line profile provides information on the kinematics as well as structural properties such as the presence of a disk and…

Astrophysics of Galaxies · Physics 2019-06-11 M. Kohandel , A. Pallottini , A. Ferrara , A. Zanella , C. Behrens , S. Carniani , S. Gallerani , L. Vallini

The H-alpha line emission is an important probe for a number of fundamental quantities in galaxies, including their number density, star formation rate (SFR) and overall gas content. A new generation of low-resolution intensity mapping…

Astrophysics of Galaxies · Physics 2022-06-15 Marta B. Silva , Saleem Zaroubi , Robin Kooistra , Asantha Cooray

The ALMA-ALPINE [CII] survey is aimed at characterizing the properties of a sample of normal star-forming galaxies (SFGs). The ALMA Large Program to INvestigate (ALPINE) features 118 galaxies observed in the [CII]-158$\mu$m line and far…

Cosmology and Nongalactic Astrophysics · Physics 2020-10-28 O. Le Fèvre , M. Béthermin , A. Faisst , G. Jones , P. Capak , P. Cassata , J. D. Silverman , D. Schaerer , L. Yan , the ALPINE team

A powerful tool to probe the gas content at high redshift is the [C II] 158 $\mu$m sub-millimeter emission line, which, due to its low excitation potential and luminous emission, is considered a possible direct tracer of star forming gas.…

Astrophysics of Galaxies · Physics 2024-09-11 Benedetta Casavecchia , Umberto Maio , Céline Péroux , Benedetta Ciardi

We report ALMA detections of [CII] and dust continuum in Az9, a multiply-imaged galaxy behind the Frontier Field cluster MACSJ0717.5+3745. The bright [CII] emission line provides a spectroscopic redshift of z = 4.274. This strongly lensed…

We report the discovery of 10-kpc scale [CII] 158um halos surrounding star-forming galaxies in the early Universe. We choose deep ALMA data of 18 galaxies each with a star-formation rate of ~ 10-70 Msun with no signature of AGN whose [CII]…

A tight relation between the [CII]158$\mu$m line luminosity and star formation rate is measured in local galaxies. At high redshift ($z>5$), though, a much larger scatter is observed, with a considerable (15-20\%) fraction of the outliers…

Astrophysics of Galaxies · Physics 2019-09-04 A. Ferrara , L. Vallini , A. Pallottini , S. Gallerani , S. Carniani , M. Kohandel , D. Decataldo , C. Behrens

Star formation and accretion onto supermassive black holes in the nuclei of galaxies are the two most energetic processes in the Universe, producing the bulk of the observed emission throughout its history. We simulated the luminosity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Luigi Spinoglio , Kalliopi M. Dasyra , Alberto Franceschini , Carlotta Gruppioni , Elisabetta Valiante , Kate Isaak

By combining high resolution, radiative transfer cosmological simulations of z~6 galaxies with a sub-grid multi-phase model of their interstellar medium we derive the expected intensity of several far infrared (FIR) emission lines ([C II]…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Livia Vallini , Simona Gallerani , Andrea Ferrara , Sunghye Baek

The latest ALMA and JWST observations provide new information on the birth and evolution of galaxies in the early Universe, at the epoch of reionization. Of particular importance are measurements at redshift $ z > 5$ of their cold-gas…

Astrophysics of Galaxies · Physics 2025-01-15 Benedetta Casavecchia , Umberto Maio , Céline Péroux , Benedetta Ciardi

We investigate the morphology of the [CII] emission in a sample of "normal" star-forming galaxies at $5<z<7.2$ in relation to their UV (rest-frame) counterpart. We use new ALMA observations of galaxies at $z\sim6-7$ as well as a careful…

Recent ALMA observations reveal diffuse [CII] emission (``[CII] halos") extending to $\sim 10\,$kpc in galaxies at $4 < z < 6$. These measurements provide new insights into high-redshift galactic ecosystems and processes that drive metal…

Astrophysics of Galaxies · Physics 2026-01-06 Lun-Jun Liu , Guochao Sun , Andreas L. Faisst , Claude-André Faucher-Giguère , Adam Lidz

ISO has enabled far-infrared spectroscopy of a variety of galaxies. Using the [CII] (158 micron) and [OI](63 micron) lines, we can characterize the physical conditions in the star-forming ISM. These observations also form the basis of our…

Astrophysics · Physics 2007-05-23 Sangeeta Malhotra

We investigate whether strong molecular and atomic emission lines at far-infrared wavelengths can influence the identification and derived properties of galaxies selected from broad-band, far-infrared or submillimetre observations. Several…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Ian Smail , A. M. Swinbank , R. J. Ivison , E. Ibar

We present ALMA detections of the [CII] 158 micron emission line and the underlying far-infrared continuum of three quasars at 6.6<z<6.9 selected from the VIKING survey. The [CII] line fluxes range between 1.6-3.4 Jy km/s ([CII]…

Astrophysics of Galaxies · Physics 2016-01-13 B. P. Venemans , F. Walter , L. Zschaechner , R. Decarli , G. De Rosa , J. R. Findlay , R. G. McMahon , W. J. Sutherland