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38 papers · 1 filter
Structure of Herbig AeBe disks at the milliarcsecond scale A statistical survey in the H band using PIONIER-VLTI
B. Lazareff, J. -P. Berger, J. Kluska +26
Context. It is now generally accepted that the near-infrared excess of Herbig AeBe stars originates in the dust of a circumstellar disk. Aims. The aims of this article are to infer…
High-redshift major mergers weakly enhance star formation
J. Fensch, F. Renaud, F. Bournaud +11
Galaxy mergers are believed to trigger strong starbursts. This is well assessed by observations in the local Universe. However the efficiency of this mechanism has poorly been test…
Ly Emitters with Very Large Ly Equivalent Widths, EW(Ly) Å, at
Takuya Hashimoto, Masami Ouchi, Kazuhiro Shimasaku +6
We present physical properties of spectroscopically confirmed Ly emitters (LAEs) with very large rest-frame Ly equivalent widths EW(Ly). Although the definition…
SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components
Yifei Jin, Yanmei Chen, Yong Shi +30
We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical…
The growth of the central region by acquisition of counter-rotating gas in star-forming galaxies
Yan-Mei Chen, Yong Shi, Christy A. Tremonti +29
Galaxies grow through both internal and external processes. In about 10% of nearby red galaxies with little star formation, gas and stars are counter-rotating, demonstrating the im…
Density profile of dark matter haloes and galaxies in the Horizon-AGN simulation: the impact of AGN feedback
S. Peirani, Y. Dubois, M. Volonteri +7
Using a suite of three large cosmological hydrodynamical simulations, Horizon-AGN, Horizon-noAGN (no AGN feedback) and Horizon-DM (no baryons), we investigate how a typical sub-gri…