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Results from a large, multi-J CO, {13}CO, and HCN line survey of Luminous Infrared Galaxies (L_{IR}>=10^{10} L_{\odot}) in the local Universe (z<=0.1), complemented by CO J=4--3 up to J=13--12 observations from the Herschel Space…

Merger processes play an important role in galaxy formation and evolution. To study the influence of merger processes on the evolution of dust properties and cosmic star formation rate, we investigate a local sample of major merger galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2012-12-11 F. -T. Yuan , T. T. Takeuchi , Y. Matsuoka , V. Buat , D. Burgarella , J. Iglesias-Páramo

We study the surface photometry for 13 single-nucleus ultraluminous IRAS galaxies (ULIRGs), selected from a parent sample of 58 galaxies obtained in a Hubble Space Telescope snapshot survey. We find that these galaxies can be classified…

Astrophysics · Physics 2007-05-23 Z. Zheng , H. Wu , S. Mao , X. -Y. Xia , Z. -G. Deng , Z. -L Zou

We present results from the Spitzer/IRS spectral mapping observations of 15 local luminous infrared galaxies (LIRGs). In this paper we investigate the spatial variations of the mid-IR emission which includes: fine structure lines, molecular…

Using data from the DEEP2 Galaxy Redshift Survey and HST/ACS imaging in the Extended Groth Strip, we select nearly 100 interacting galaxy systems including kinematic close pairs and morphologically identified merging galaxies. Spitzer MIPS…

We present a comprehensive study of the evolution of Luminous Red Galaxies (LRGs) in the latest and final spectroscopic data release of the Sloan Digital Sky Survey. We test the scenario of passive evolution of LRGs in 0.15<z<0.5, by…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Rita Tojeiro , Will J. Percival

We demonstrate that the large scatter in the ultra-violet (UV) colours of intermediate-mass early-type galaxies in the local Universe and the inferred low-level recent star formation in these objects can be reproduced by minor mergers in…

Astrophysics · Physics 2009-11-13 Sugata Kaviraj , Sebastien Peirani , Sadegh Khochfar , Joseph Silk , Scott Kay

Gravitational waves (GWs) in the nano-hertz band are great tools for understanding the cosmological evolution of supermassive black holes (SMBHs) in galactic nuclei. We consider SMBH binaries in high-$z$ ultra-luminous infrared galaxies…

Astrophysics of Galaxies · Physics 2018-09-18 Kohei Inayoshi , Kohei Ichikawa , Zoltan Haiman

We report on the energetics of molecular outflows in 14 local Ultraluminous Infrared Galaxies (ULIRGs) that show unambiguous outflow signatures (P-Cygni profiles or high-velocity absorption wings) in the far-infrared lines of OH measured…

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

We have obtained ISOPHOT-S low resolution mid-infrared spectra of a sample of 60 Ultraluminous Infrared Galaxies (ULIRGs). We use the strength of the `PAH' mid-infrared features as a discriminator between starburst and AGN activity, and to…

Astrophysics · Physics 2016-08-30 D. Lutz , R. Genzel , D. Rigopoulou , H. W. W. Spoon , D. Tran , A. F. M. Moorwood

We present here the first study of the X-ray properties of an evolutionary sample of merging galaxies. Both ROSAT PSPC and HRI data are presented for a sample of eight interacting galaxy systems, each believed to involve a similar encounter…

Astrophysics · Physics 2009-10-30 A. M. Read , T. J. Ponman

We present new results on the physical nature of infrared-luminous sources at 0.5<z<2.8 as revealed by HST/NICMOS imaging and IRS mid-infrared spectroscopy. Our sample consists of 134 galaxies selected at 24\mum with a flux of S(24\mum) >…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Michel Zamojski , Lin Yan , Kalliopi Dasyra , Anna Sajina , Jason Surace , Tim Heckman , George Helou

Based on far-infrared spectroscopy of a small sample of nearby infrared-bright and ultraluminous infrared galaxies (ULIRGs) with the ISO Long Wavelength Spectrometer, we find a dramatic progression in ionic/atomic fine-structure emission…

We analyze the mid-infrared (MIR) spectra of ultraluminous infrared galaxies (ULIRGs) observed with the Spitzer Space Telescope's Infrared Spectrograph. Dust emission dominates the MIR spectra of ULIRGs, and the reprocessed radiation that…

Astrophysics · Physics 2009-11-13 M. M. Sirocky , N. A. Levenson , M. Elitzur , H. W. W. Spoon , L. Armus

The interstellar medium is a key ingredient that governs star formation in galaxies. We present a detailed study of the infrared (~ 1-500 micron) spectral energy distributions of a large sample of 193 nearby (z ~ 0.088) luminous infrared…

Astrophysics of Galaxies · Physics 2019-01-23 Jinyi Shangguan , Luis C. Ho , Ruancun Li , Ming-Yang Zhuang , Yanxia Xie , Zhihui Li

We present a stellar population synthesis study of a type I luminous infrared galaxy (LIRG): IRAS F13308+5946. It is a quasar with absolute magnitude Mi = -22.56 and has a spectral feature of a Seyfert 1.5 galaxy. Optical images show…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Xian-Min Meng , Hong Wu , Qiu-Sheng Gu , Jing Wang , Chen Cao

We have studied the morphologies of luminous infrared galaxies (LIRGs; L_IR(8-1000um)>10^11 Lsun) at 0.3< z<1.4 in the HST Ultradeep Field (UDF) by calculating concentration and asymmetry indices and comparing the results with similar…

Astrophysics · Physics 2010-11-11 Y. Shi , G. H. Rieke , C. Papovich , P. G. Perez-Gonzalez , E. Le Floch

We fit the near-infrared to radio spectral energy distributions of 30 luminous and ultra-luminous infrared galaxies with pure starburst models or models that include both starburst and AGN components to determine important physical…

Astrophysics · Physics 2009-11-13 O. Vega , M. S. Clemens , A. Bressan , G. L. Granato , L. Silva , P. Panuzzo , --

This work studies the environments and star formation relationships of local luminous infrared galaxies (LIRG) in comparison to other types of local and distant (z~1) galaxies. The infrared (IR) galaxies are drawn from the IRAS sample. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Abiy G. Tekola , Petri Vaisanen , Andreas Berlind
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