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相关论文: Local Benchmarks for the Evolution of Major-Merger…

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We present CO observations of 78 spiral galaxies in local merger pairs. These galaxies representa subsample of a Ks-band selected sample consisting of 88 close major-merger pairs (HKPAIRs), 44 spiral-spiral (S+S) pairs and 44…

星系天体物理 · 物理学 2019-07-10 Ute Lisenfeld , Cong Kevin Xu , Yu Gao , Donovan L. Domingue , Min S. Yun , Pei Zuo

We present Herschel PACS $\&$ SPIRE far-infrared (FIR) and sub-mm imaging observations for a large K-band selected sample of 88 close major-merger pairs of galaxies (H-KPAIRs) in 6 photometric bands (70, 100, 160, 250, 350, and 500 $\mu…

We present a study of the bulge-to-total ratio (B/T) of a Ks-band-selected sample of 88 close major-merger pairs of galaxies (H-KPAIR) based on 2-D decomposition of SDSS r-band images with \textsc{galfit}. We investigate the dependence of…

星系天体物理 · 物理学 2022-08-17 Chuan He , Cong Kevin Xu , Donovan Domingue , Chen Cao , Jiasheng Huang

We present a study of the HI gas content of a large K-band selected sample of 88 close major-merger pairs of galaxies (H-KPAIR) which were observed by $\it Herschel$. We obtained the 21 cm HI fine-structure emission line data for a total of…

星系天体物理 · 物理学 2018-07-18 Pei Zuo , Cong K. Xu , Min S. Yun , Ute Lisenfeld , Di Li , Chen Cao

We present a study of star-forming galaxies (SFGs) with pseudobulges (bulges with S\'ersic index $\rm n < 2$) in a local close major-merger galaxy pair sample (H-KPAIR). With data from new aperture photometries in the optical and…

星系天体物理 · 物理学 2024-03-29 Chuan He , Cong Kevin Xu , Ute Lisenfeld , Y Sophia Dai , Taotao Fang , Jia-Sheng Huang , Wei Wang , Qingzheng Yu

The infrared (IR) emission of M_* galaxies (10^{10.4} < M_{star} < 10^{11.0} M_\sun) in galaxy pairs, derived using data obtained in Herschel (PEP/HerMES) and Spitzer (S-COSMOS) surveys, is compared to that of single disk galaxies in well…

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…

宇宙学与河外天体物理 · 物理学 2009-01-29 Donovan L. Domingue , C. K. Xu , T. H. Jarrett , Y. Cheng

A sample of close major-merger pairs (projected separation ${\rm 5 \leq r \leq 20 h^{-1}}$ kpc, ${\rm K_s}$ band magnitude difference $\delta {\rm K_s} \leq 1$ mag) is selected from the matched 2MASS-2dFGRS catalog of Cole et al. (2001).…

天体物理学 · 物理学 2009-11-10 C. K. Xu , Y. C. Sun , X. T. He

We present results of a statistical study of the cosmic evolution of the mass dependent major-merger rate since z=1. A stellar mass limited sample of close major-merger pairs (the CPAIR sample) was selected from the archive of the COSMOS…

宇宙学与河外天体物理 · 物理学 2015-05-30 C. Kevin Xu , Yinghe Zhao , N. Scoville , P. Capak , N. Drory , Y. Gao

We investigate the evolutional and environmental effects on star formation efficiency for more than 400 merging galaxies. The ~400 merging systems, with photometric redshifts smaller than 0.7, are obtained from a catalog of ~15000…

宇宙学与河外天体物理 · 物理学 2015-05-27 Mei-Ling Huang , Chorng-Yuan Hwang

Mergers play important roles in triggering the most active objects in the universe, including (U)LIRGs and QSOs. However, whether they are also important for the total stellar mass build-up in galaxies in general is unclear and…

宇宙学与河外天体物理 · 物理学 2013-07-25 C. Kevin Xu

We present a study of the largest available sample of near-infrared selected (i.e., stellar mass selected) dynamically close pairs of galaxies at low redshifts ($z<0.3$). We combine this sample with new estimates of the major-merger pair…

星系天体物理 · 物理学 2015-06-22 R. C. Keenan , S. Foucaud , R. De Propris , B. C. Hsieh , L. Lin , R. C. Y. Chou , S. Huang , J. H. Lin , K. H. Chang

We compare the radial profiles of the specific star formation rate (sSFR) in a sample of 169 star-forming galaxies in close pairs with those of mass-matched control galaxies in the SDSS-IV MaNGA survey. We find that the sSFR is centrally…

星系天体物理 · 物理学 2021-03-17 Joshua L. Steffen , Hai Fu , J. M. Comerford , Y. Sophia Dai , Shuai Feng , Arran C. Gross , Rui Xue

Galaxy mergers are a major evolutionary transformation whose effects are borne out by a plethora of observations and numerical simulations. However, most previous simulations have used idealised, isolated, binary mergers and there has not…

星系天体物理 · 物理学 2020-02-19 Maan H. Hani , Hayman Gosain , Sara L. Ellison , David R. Patton , Paul Torrey

We present an analysis of dust properties of a sample of close major-merger galaxy pairs selected by K_s magnitude and redshift. The pairs represent the two populations of spiral-spiral (S+S) and mixed morphology spiral-elliptical (S+E).…

星系天体物理 · 物理学 2019-08-17 Donovan L. Domingue , Chen Cao , C. Kevin Xu , Thomas H. Jarrett , Joseph Ronca , Emily Hill , Allison Jacques

We study the relationship between the local environment of galaxies and their star formation rate (SFR) in the Great Observatories Origins Deep Survey, GOODS, at z~1, from ultradeep imaging at 24 microns with the MIPS camera onboard…

We exploit deep observations of the GOODS-N field taken with PACS, on board of Herschel, as part of the PEP guaranteed time, to study the link between star formation and stellar mass in galaxies to z~2. Starting from a stellar mass-selected…

We use the HiZELS narrow-band H-alpha survey in combination with CANDELS, UKIDSS and WIRDS near-infrared imaging, to investigate the morphologies, merger rates and sizes of a sample of H-alpha emitting galaxies in the redshift range z=0.40…

宇宙学与河外天体物理 · 物理学 2013-09-02 John P. Stott , David Sobral , Ian Smail , Richard Bower , Philip N. Best , James E. Geach

We present a sample of 1899 galaxies with a close companion taken from the SDSS DR7. The galaxy pairs are selected to have velocity differences < 300 km/s, projected separations (rp) < 80 kpc/h, mass ratios between 0.1 and 10, and robust…

宇宙学与河外天体物理 · 物理学 2015-06-05 Jillian M. Scudder , Sara L. Ellison , Paul Torrey , David R. Patton , J. Trevor Mendel

Galaxy mergers can change the rate at which stars are formed. We can trace when these changes occur in simulations of galaxy mergers. However, for observed galaxies we do not know how the star formation rate (SFR) evolves along the merger…

星系天体物理 · 物理学 2026-01-14 W. J. Pearson , L. Wang , V. Rodriguez-Gomez , B. Margalef-Bentabol , L. E. Suelves
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