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Related papers: NIR/Optical Selected Local Mergers --- Spatial Den…

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Neutron star observations, including direct mass and radius measurements as well as the analysis of gravitational wave signals emitted by stellar mergers, provide valuable and unique insights into the properties of strongly interacting…

Nuclear Theory · Physics 2019-02-20 Aleksi Vuorinen

We measure the role of major and minor mergers in forming the stellar masses of galaxies over $0<z<3$ using a combination of $\sim 3.25$ deg$^{2}$ of the deepest ground based near-infrared imaging taken to date as part of the REFINE survey.…

Astrophysics of Galaxies · Physics 2022-12-07 Christopher J. Conselice , Carl J. Mundy , Leonardo Ferreira , Kenneth Duncan

Galaxy clusters are hotter and more X-ray luminous than in quiescence while they undergo major mergers, which also transiently increase their strong-lensing efficiency. We use semi-analytic models for both effects to study how cluster…

Astrophysics · Physics 2008-11-26 C. Fedeli , M. Bartelmann

We investigate the nature of stellar populations of major galaxy mergers between late-type spirals considerably abundant in interstellar medium by performing numerical simulations designed to solve both the dynamical and chemical evolution…

Astrophysics · Physics 2009-10-30 Kenji Bekki , Yasuhiro Shioya

In order to investigate the effects of galaxy mergers throughout the interaction sequence, we present a study of 10,800 galaxies in close pairs and a smaller sample of 97 post-mergers identified in the Sloan Digital Sky Survey. We find that…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Sara L. Ellison , J. Trevor Mendel , David R. Patton , Jillian M. Scudder

We study the impact of different galaxy statistics and empirical metallicity scaling relations on the merging rates and on the properties of compact objects binaries. First, we analyze the similarities and differences of using the star…

Astrophysics of Galaxies · Physics 2021-02-17 Lumen Boco , Andrea Lapi , Martyna Chruslinska , Darko Donevski , Alex Sicilia , Luigi Danese

We investigate the triggering mechanism and the structural properties of obscured luminous active galactic nuclei from a detailed study of the rest-frame $B$ and $I$ HST images of 29 nearby ($z\approx 0.04-0.4$) optically selected type 2…

Astrophysics of Galaxies · Physics 2019-06-05 Dongyao Zhao , Luis C. Ho , Yulin Zhao , Jinyi Shangguan , Minjin Kim

We investigate the environmental dependence of galaxies with the star formation rate (SFR) in a complete volume limited sample of 91566 galaxies, in the redshift range $0.05 \le z \le 0.095$, and with $M_r=-20.0$ (that is M$^*$ + 1.45),…

Astrophysics · Physics 2007-05-23 G. Sorrentino , A. Rifatto

Galaxy interactions/mergers have been shown to dominate the population of IR luminous galaxies (log(LIR)>11.6Lsun) in the local Universe (z<0.25). Recent studies based on the relation between galaxies' star formation rates and stellar mass…

We make use of four galaxy catalogs based on four different semi-analytical models (SAMs) implemented in the Millennium simulation to study the environmental effects and the model dependence of galaxy merger rate. We begin the analyses by…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-30 Hung-Yu Jian , Lihwai Lin , Tzihong Chiueh

We study star formation (SF) in very active environments, in luminous IR galaxies, which are often interacting. A variety of phenomena are detected, such as central starbursts, circumnuclear SF, obscured SNe tracing the history of recent…

We present a study of the molecular gas in early-mid stage major-mergers, with a sample of 43 major-merger galaxy pairs selected from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey and a control sample of 195…

Astrophysics of Galaxies · Physics 2024-05-01 Qingzheng Yu , Taotao Fang , Cong Kevin Xu , Shuai Feng , Siyi Feng , Yu Gao , Xue-Jian Jiang , Ute Lisenfeld

Many investigations of star formation rates (SFRs) in galaxies have explored details of dust obscuration, with a number of recent analyses suggesting that obscuration appears to increase in systems with high rates of star formation. To date…

Astrophysics · Physics 2008-12-18 J. Afonso , A. Hopkins , B. Mobasher , C. Almeida

Interaction between galaxies play a pivotal role in their evolution. Ongoing star formation in spiral galaxies can be affected by these processes. We select a sample of interacting galaxies in field environments at various interaction…

We perform 3-D dust radiative transfer (RT) calculations on hydrodynamic simulations of isolated and merging disk galaxies in order to quantitatively study the dependence of observed-frame submillimeter (submm) flux density on galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-22 Christopher C. Hayward , Dušan Kereš , Patrik Jonsson , Desika Narayanan , T. J. Cox , Lars Hernquist

We select a close "major-merger candidate" galaxy pair sample in order to calculate the K_{s} luminosity function (LF) and pair fraction representative of the merger/interaction component of galaxy evolution in the local universe. The pair…

Cosmology and Nongalactic Astrophysics · Physics 2009-01-29 Donovan L. Domingue , C. K. Xu , T. H. Jarrett , Y. Cheng

Using deep infrared observations conducted with the MOIRCS on the Subaru Telescope in GOODS-N combined with public surveys in GOODS-S, we investigate the dependence on stellar mass, M_*, and galaxy type of the close pair fraction (5 kpc < r…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-15 Kevin Bundy , Masataka Fukugita , Richard S. Ellis , Thomas A. Targett , Sirio Belli , Tadayuki Kodama

Internal gas inflows driven by galaxy mergers are considered to enhance star formation rates (SFR), fuel supermassive black hole growth and stimulate active galactic nuclei (AGN). However, quantifying these phenomena remains a challenge,…

A fundamental question of extra-galactic astronomy that is yet to be fully understood, concerns the evolution of the star formation rate (SFR) and supermassive black hole (SMBH) activity with cosmic time, as well as their interplay and how…

We examine the properties of a morphologically-selected sample of 0.4<z<1.0 spheroidal galaxies in the GOODS fields in order to ascertain whether their increase in abundance with time arises primarily from mergers. To address this question…

Astrophysics · Physics 2009-11-13 K. Bundy , T. Treu , R. S. Ellis