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Related papers: Massive star formation in Luminous Infrared Galaxi…

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The relationship between star formation and super-massive black hole growth is central to our understanding of galaxy formation and evolution. Hyper-Luminous Infrared Galaxies (HLIRGs) are unique laboratories to investigate the connection…

Cosmology and Nongalactic Astrophysics · Physics 2010-06-16 A. Ruiz , G. Miniutti , F. Panessa , F. J. Carrera

We investigate the role of dense Mpc-scale environments in processing molecular gas of cluster galaxies as they fall into the cluster cores. We consider $\sim20$ luminous infrared galaxies (LIRGs) in intermediate-$z$ clusters, from the…

Nuclear starbursts and AGN activity are the main heating processes in luminous infrared galaxies (LIRGs) and their relationship is fundamental to understand galaxy evolution. In this paper, we study the star-formation and AGN activity of a…

The luminosities, colors and H\alpha\ emission for 429 HII regions in 54 LSB galaxies are presented. While the number of HII regions per galaxy is lower in LSB galaxies compared to star-forming irregulars and spirals, there is no indication…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 James Schombert , Stacy McGaugh , Tamela Maciel

We report on the discovery of an isolated, compact HII region in the Virgo cluster. The object is located in the diffuse outer halo of NGC 4388, or could possibly be in intracluster space. Star formation can thus take place far outside the…

Astrophysics · Physics 2009-11-07 Ortwin Gerhard , Magda Arnaboldi , Kenneth C. Freeman , Sadanori Okamura

We compare star formation in the inner and outer disks of 11 dwarf Irregular galaxies (dIm) within 3.6 Mpc. The regions are identified on GALEX near-UV images, and modeled with UV, optical, and near-IR colors to determine masses and ages. A…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Nicholas W. Melena , Bruce G. Elmegreen , Deidre A. Hunter , Lea Zernow

This work presents the properties of 42 objects in the group of the most luminous, highest star formation rate LINERs at z = 0.04 - 0.11. We obtained long-slit spectroscopy of the nuclear regions for all sources, and FIR data (Herschel and…

Astrophysics of Galaxies · Physics 2016-08-31 Mirjana Pović , Isabel Márquez , Hagai Netzer , Josefa Masegosa , Raanan Nordon , Enrique Pérez , William Schoenell

The Lynx arc, with a redshift of 3.357, was discovered during spectroscopic follow-up of the z=0.570 cluster RX J0848+4456 from the ROSAT Deep Cluster Survey. The arc is characterized by a very red R-K color and strong, narrow emission…

Ever since their discovery in the 1970's, UltraLuminous InfraRed Galaxies (ULIRGs; classically Lir>10^12Lsun) have fascinated astronomers with their immense luminosities, and frustrated them due to their singularly opaque nature, almost in…

Astrophysics · Physics 2015-06-24 Carol Lonsdale , Duncan Farrah , Harding Smith

Quillen et al.(2007) presented an imaging survey with the {\it Spitzer Space Telescope} of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray luminous clusters. They found that at least half of these…

We identify eight z>1 radio sources undetected at 850um but robustly detected at 70um, confirming that they represent ultraluminous infrared galaxies (ULIRGs) with hotter dust temperatures (T_dust=52+-10 K) than Submillimetre Galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 C. M. Casey , S. C. Chapman , R. J. Beswick , A. D. Biggs , A. W. Blain , L. J. Hainline , R. J. Ivison , T. Muxlow , I. Smail

We study the fraction of the intra-cluster light (ICL) formed in-situ in the three most massive clusters of the TNG50 simulation, with virial masses $\sim 10^{14}$ M$_{\odot}$. We find that a significant fraction of ICL stars ($8\%$-$28\%$)…

Astrophysics of Galaxies · Physics 2024-12-10 Niusha Ahvazi , Laura V. Sales , Julio F. Navarro , Andrew Benson , Alessandro Boselli , Richard D'Souza

We imaged a set of 15 intermediate redshift (z~0.8) luminous infrared galaxies (LIRGs) with the Keck Laser Guide Star (LGS) AO facility. These galaxies were selected from the GOODS-S field, allowing us to combine the high spatial resolution…

We investigate the effects of the environment on star-formation in a sample of massive luminous and ultra-luminous infrared galaxies (LIRGs and ULIRGs) with S(24 micron)>80 uJy and i+<24 in the COSMOS field. We exploit the accurate…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 C. Feruglio , H. Aussel , E. Le Floc'h , O. Ilbert , M. Salvato , P. Capak , F. Fiore , J. Kartaltepe , D. Sanders , N. Scoville , A. M. Koekemoer , Y. Ideue

Hyperluminous infrared galaxies (HLIRG) are the most luminous persistent objects in the Universe. They exhibit extremely high star formation rates, and most of them seem to harbour an AGN. They are unique laboratories to investigate the…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-11 A. Ruiz , G. Risaliti , E. Nardini , F. Panessa , F. J. Carrera

Nuclear stellar cusps are defined as central excess light component in the stellar light profiles of galaxies and are suggested to be stellar relics of intense compact starbursts in the central ~100-500 pc region of gas-rich major mergers.…

Nuclear rings are excellent laboratories for studying intense star formation. We present results from a study of nuclear star-forming rings in five nearby normal galaxies from the Star Formation in Radio Survey (SFRS) and four local LIRGs…

At luminosities above ~10^{11} L_sun, infrared galaxies become the dominant population of extragalactic objects in the local Universe (z < 0.5), being more numerous than optically selected starburst and Seyfert galaxies, and QSOs at…

Astrophysics · Physics 2007-05-23 D. B. Sanders , J. A. Surace , C. M. Ishida

Dusty starbursts were more numerous around z~1 than today and appear to be responsible for the majority of cosmic star formation over the Hubble time. We suggest that they represent a common phase within galaxies in general which is…

Astrophysics · Physics 2017-03-29 David Elbaz , Emmanuel Moy

Many recent estimates of the star formation rate density at high redshift rely on rest-frame ultraviolet (UV) data. These are highly sensitive to dust absorption. Applying a correlation between the far-infrared (FIR) to UV flux ratio and UV…