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相关论文: 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…

宇宙学与河外天体物理 · 物理学 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…

宇宙学与河外天体物理 · 物理学 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…

天体物理学 · 物理学 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…

宇宙学与河外天体物理 · 物理学 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…

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…

天体物理学 · 物理学 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…

宇宙学与河外天体物理 · 物理学 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 ($8\%$-$28\%$)…

星系天体物理 · 物理学 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…

天体物理学 · 物理学 2009-11-13 J. Melbourne , M. Ammons , S. A. Wright , A. Metevier , E. Steinbring , C. Max , D. C. Koo , J. E. Larkin , M. Barczys

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…

宇宙学与河外天体物理 · 物理学 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…

宇宙学与河外天体物理 · 物理学 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…

天体物理学 · 物理学 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…

天体物理学 · 物理学 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…

天体物理学 · 物理学 2007-05-23 G. R. Meurer , T. M. Heckman , M. Seibert , J. D. Goldader , D. Calzetti , D. Sanders , C. C. Steidel