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Related papers: Ultimate Merging at z~0.1

200 papers

We use numerical simulation to investigate the triggering of starbursts in merging disk galaxies. The properties of the merger-driven starbursts are sensitive to the structure of the progenitor galaxies; specifically, to the amount of…

Astrophysics · Physics 2007-05-23 Chris Mihos , Lars Hernquist

Recent observations of UV-/optically selected, massive star forming galaxies at z~2 indicate that the baryonic mass assembly and star formation history is dominated by continuous rapid accretion of gas and internal secular evolution, rather…

We revisit the evolution of galaxy morphology in the COSMOS field over the redshift range $0.2\leq z \leq 1$, using a large and complete sample of 33,605 galaxies with a stellar mass of log($M_{\ast}$/M$_{\odot} )>9.5$ with significantly…

Astrophysics of Galaxies · Physics 2023-09-29 Jian Ren , Nan Li , F. S. Liu , Qifan Cui , Mingxiang Fu , Xian Zhong Zheng

ESO 148-IG002 represents a transformative stage of galaxy evolution, containing two galaxies at close separation which are currently coalescing into a single galaxy. We present integral field data of this galaxy from the ANU Wide Field…

Astrophysics of Galaxies · Physics 2015-06-22 Sarah Leslie , Jeffrey Rich , Lisa Kewley , Michael Dopita

We report on the detection of bright CO(4-3) line emission in two powerful, obscured quasars discovered in the SWIRE survey, SW022513 and SW022550 at z>3.4. We analyze the line strength and profile to determine the gas mass, dynamical mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 M. Polletta , N. P. H. Nesvadba , R. Neri , A. Omont , S. Berta , J. Bergeron

We detect ionized gas characteristics indicative of winds in three disk-dominated galaxies that are members of a super-group at z=0.37 that will merge to form a Coma-mass cluster. All three galaxies are IR-luminous (L_IR > 4 x 10^{10}…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 E. Freeland , K-V. Tran , T. Irwin , L. Giordano , A. Saintonge , A. Gonzalez , D. Zaritsky , D. Just

A pilot study with the powerful new backend of the Westerbork Synthesis Radio Telescope (WSRT) of two galaxy clusters at z=0.2 has revealed neutral hydrogen emission from 39 galaxies. The volume probed for each cluster is 1.7x10^4 Mpc^3,…

We present a sample of 18 optically-selected and X-ray detected spatially offset active galactic nuclei (AGN) from the Sloan Digital Sky Survey (SDSS). In 9 systems, the X-ray AGN is spatially offset from the galactic stellar core that is…

Astrophysics of Galaxies · Physics 2016-09-28 R. Scott Barrows , Julia M. Comerford , Jenny E. Greene , David Pooley

Many studies and simulations suggest gas-rich mergers do not contribute significantly to the overall star-formation rate and total mass function of galaxies. The velocity dispersions (sigma) of Luminous & Ultraluminous Infrared Galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-24 B. Rothberg , J. Fischer

The presence of double-peaked/multicomponent emission line profiles in spectra of galaxies is commonly done by visual inspection. However, the identification of complex emission line profiles by eye is unapproachable for large databases…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 B. Garcia-Lorenzo

Using a sample of 38 radio-loud galaxy mergers at z<=0.2, we confirm the high detection rate (~84%) of HI 21-cm absorption in mergers, which is significantly higher (~4 times) than in non-mergers. The distributions of the HI column density…

Astrophysics of Galaxies · Physics 2019-08-14 Rajeshwari Dutta , Raghunathan Srianand , Neeraj Gupta

We present the near-infrared high resolution imaging of an extremely dense group of galaxies at the core of the protocluster at $z=3.09$ in the SSA22 field by using the adaptive optics AO188 and the Infrared Camera and Spectrograph (IRCS)…

Astrophysics of Galaxies · Physics 2017-06-21 M. Kubo , T. Yamada , T. Ichikawa , M. Kajisawa , Y. Matsuda , I. Tanaka , H. Umehata

We report the discovery of a remarkable concentration of massive galaxies with extended X-ray emission at $z_{spec} = 2.506$, which contains 11 massive ($M_{*} \gtrsim 10^{11} M_{\odot}$) galaxies in the central 80kpc region (11.6$\sigma$…

We investigate the time evolution of non-parametric morphological quantities and their relationship to major mergers between $4\geq z \geq 2$ in high-resolution cosmological zoom simulations of disk galaxies that implement kinetic wind…

Astrophysics of Galaxies · Physics 2015-08-11 Robert Thompson , Romeel Davé , Shuiyao Huang , Neal Katz

We explore the rate and impact of galaxy mergers on the massive galaxy population using the amplitude of the two-point correlation function on small scales for M > 5e10 M_sun galaxies from the COSMOS and COMBO-17 surveys. Using a pair…

We present a sample of 398 galaxies with ionized gas outflow signatures in their spectra from the Galaxy and Mass Assembly (GAMA) Survey Data Release 4, including 45 low-mass galaxies with stellar masses $M_*<10^{10}$ $M_\odot$. We assemble…

Astrophysics of Galaxies · Physics 2024-12-03 Sheyda Salehirad , Amy E. Reines , Mallory Molina

We present here AMUSING\textrm{++}; the largest compilation of nearby galaxies observed with the MUSE integral field spectrograph so far. This collection consists of 635 galaxies from different MUSE projects covering the redshift interval…

A754 is a well-observed cluster of galaxies which exhibits a variety of morphological peculiarities. These include a bar of X-ray emission that is offset significantly from the galaxy distribution, an elongated X-ray surface brightness…

Astrophysics · Physics 2009-10-30 Kurt Roettiger , James M. Stone , Richarch F. Mushotzky

SPT0346-52 is one of the most most luminous and intensely star-forming galaxies in the universe, with L_FIR > 10^13 L_sol and Sigma_SFR ~ 4200 M_sol yr^-1 kpc^-2. In this paper, we present ~0.15'' ALMA observations of the [CII]158micron…

Detecting galaxies when their star-formation is being quenched is crucial to understand the mechanisms driving their evolution. We identify for the first time a sample of quenching galaxies selected just after the interruption of their star…

Astrophysics of Galaxies · Physics 2018-05-16 Salvatore Quai , Lucia Pozzetti , Annalisa Citro , Michele Moresco , Andrea Cimatti