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Related papers: Decomposing Infrared Luminosity Functions into Sta…

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We study the mid- to far-IR properties of a 24um-selected flux-limited sample (S24 > 5mJy) of 154 intermediate redshift (<z>~0.15), infrared luminous galaxies, drawn from the 5MUSES survey. By combining existing mid-IR spectroscopy and new…

(Abridged) We study relationships between the SFR and the nuclear properties of X-ray selected AGNs out to z=2.5, using far-IR data in three extragalactic deep fields as part of the PACS Evolutionary Probe (PEP) program. Guided by studies…

We present the radio properties of 66 spectroscopically-confirmed normal star-forming galaxies (SFGs) at $4.4<z<5.9$ in the COSMOS field that were [C II] detected in the Atacama Large Millimeter Array (ALMA) Large Program to INvestigate [C…

While AGN are considered to be key drivers of the evolution of massive galaxies, their potentially significant role in the dwarf-galaxy regime (M*< 10^9 MSun) remains largely unexplored. We combine optical and infrared data, from the Hyper…

Astrophysics of Galaxies · Physics 2019-09-18 Sugata Kaviraj , Garreth Martin , Joseph Silk

We use $\sim 1800$ X-ray Active Galactic Nuclei (AGN) in the eROSITA Final Equatorial-Depth Survey (eFEDS), that span over two orders of magnitude in X-ray luminosity, $\rm L_{X,2-10keV} \approx 10^{43-45}\,ergs^{-1}$, and compare their…

Astrophysics of Galaxies · Physics 2022-07-27 G. Mountrichas , V. Buat , G. Yang , M. Boquien , D. Burgarella , L. Ciesla , K. Malek , R. Shirley

We present a joint analysis of the rest-frame ultraviolet (UV) luminosity functions of continuum-selected star-forming galaxies and galaxies dominated by active galactic nuclei (AGNs) at $z \sim$ 4. These 3,740 $z \sim$ 4 galaxies are…

CIGALE is a powerful multiwavelength spectral energy distribution (SED) fitting code for extragalactic studies. However, the current version of CIGALE is not able to fit X-ray data, which often provide unique insights into AGN intrinsic…

Astrophysics of Galaxies · Physics 2020-01-24 Guang Yang , M. Boquien , V. Buat , D. Burgarella , L. Ciesla , F. Duras , M. Stalevski , W. N. Brandt , C. Papovich

We make use of multi-wavelength data of a large hyperluminous infrared (HLIRG) sample to derive their main physical properties, e.g., stellar mass, star-formation rate (SFR), volume density, contribution to the cosmic stellar mass density…

Astrophysics of Galaxies · Physics 2021-10-20 F. Gao , L. Wang , A. Efstathiou , K. Małek , P. N. Best , M. Bonato , D. Farrah , R. Kondapally , I. McCheyne , H. J. A. Röttgering

We investigate the infrared contribution from supermassive black hole activity versus host galaxy emission in the mid to far-infrared (IR) spectrum for a large sample of X-ray bright active galactic nuclei (AGN) residing in dusty,…

Astrophysics of Galaxies · Physics 2019-07-02 Arianna Brown , Hooshang Nayyeri , Asantha Cooray , Jingzhe Ma , Ryan C. Hickox , Mojegan Azadi

We present the rest-frame 8 micron luminosity function (LF) at redshifts z=1 and ~2, computed from Spitzer 24 micron-selected galaxies in the GOODS fields over an area of 291 sq. arcmin. Using classification criteria based on X-ray data and…

Astrophysics · Physics 2011-02-11 K. I. Caputi , G. Lagache , Lin Yan , H. Dole , N. Bavouzet , E. Le Floc'h , P. I. Choi , G. Helou , N. Reddy

We present the detailed analysis of 11 local luminous infrared galaxies (LIRGs) from ultraviolet through far-infrared to radio ($\sim$70 MHz to $\sim$15 GHz) bands. We derive the astrophysical properties through spectral energy distribution…

Context. Measuring how the physical properties of galaxies change across cosmic times is essential to understand galaxy formation and evolution. With the advent of numerous ground-based and space-borne instruments launched over the past few…

Astrophysics of Galaxies · Physics 2019-02-13 M. Boquien , D. Burgarella , Y. Roehlly , V. Buat , L. Ciesla , D. Corre , A. K. Inoue , H. Salas

Both star formation (SF) and Active Galactic Nuclei (AGN) play an important role in galaxy evolution. Statistically quantifying their relative importance can be done using radio luminosity functions. Until now these relied on galaxy…

Galaxy mergers are key events in galaxy evolution, often causing massive starbursts and fueling active galactic nuclei (AGN). In these highly dynamic systems, it is not yet precisely known how much starbursts and AGN respectively contribute…

The most rapidly evolving regions of galaxies often display complex optical spectra with emission lines excited by massive stars, shocks and accretion onto supermassive black holes. Standard calibrations (such as for the star formation…

Modern and future surveys effectively provide a panchromatic view for large numbers of extragalactic objects. Consistently modeling these multiwavelength survey data is a critical but challenging task for extragalactic studies. The Code…

We have performed 23 GHz VLA observations of 7 compact, luminous infrared galaxies, selected to have evidence of starburst activity. New and published multi-frequency data are combined to obtain the spectral energy distributions of all 7…

Astrophysics · Physics 2009-11-10 O. R. Prouton , A. Bressan , M. Clemens , A. Franceschini , G. L. Granato , L. Silva

We present the results of a 5-8 micron spectral analysis performed on the largest sample of local ultraluminous infrared galaxies (ULIRGs) selected so far, consisting of 164 objects up to a redshift of ~0.35. The unprecedented sensitivity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 E. Nardini , G. Risaliti , Y. Watabe , M. Salvati , E. Sani

What main mechanisms set the star formation rate (SFR) of galaxies? This PhD thesis is a quest into the influences of gas and active galactic nuclei (AGNs) on the SFR, with particular focus on massive galaxies at z~2. First, a new code if…

Astrophysics of Galaxies · Physics 2017-01-11 Karen P. Olsen

We present a study of the infrared properties of X-ray selected, moderate luminosity (Lx=10^{42}-10^{44}ergs/s) active galactic nuclei (AGNs) up to z~3, to explore the links between star formation in galaxies and accretion onto their…