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103 papers · 2 filters
The mystery of the 'Kite' radio source in Abell 2626: insights from new Chandra observations
A. Ignesti, M. Gitti, G. Brunetti +3
We present the results of a new Chandra study of the galaxy cluster A2626. The radio emission of the cluster shows a complex system of four symmetric arcs without known correlation…
Fast, Collimated Outflow in the Western Nucleus of Arp 220
Loreto Barcos-Muñoz, Susanne Aalto, Todd A. Thompson +6
We present the first spatially and spectrally resolved image of the molecular outflow in the western nucleus of Arp\,220. The outflow, seen in HCN~(1--0) by ALMA, is compact and co…
Spatially Resolved Dust, Gas, and Star Formation in the Dwarf Magellanic Irregular NGC4449
D. Calzetti, G. W. Wilson, B. T. Draine +17
We investigate the relation between gas and star formation in sub-galactic regions, ~360 pc to ~1.5 kpc in size, within the nearby starburst dwarf NGC4449, in order to separate the…
CO diffusion and desorption kinetics in CO ices
Ilsa R. Cooke, Karin I. Öberg, Edith C. Fayolle +2
Diffusion of species in icy dust grain mantles is a fundamental process that shapes the chemistry of interstellar regions; yet measurements of diffusion in interstellar ice analogs…
Discovery of a z = 7.452 High Equivalent Width Lyman-α Emitter from the Hubble Space Telescope Faint Infrared Grism Survey
Rebecca L. Larson, Steven L. Finkelstein, Norbert Pirzkal +18
We present the results of an unbiased search for Lyα emission from continuum-selected 6 < z < 8 galaxies. Our dataset consists of 160 orbits of G102 slitless grism spectroscopy obt…
A Molecular Line Survey toward the Nearby Galaxies NGC 1068, NGC 253, and IC 342 at 3 mm with the Nobeyama 45-m Radio Telescope: Impact of an AGN on 1 kpc Scale Molecular Abundances
Taku Nakajima, Shuro Takano, Kotaro Kohno +2
It is important to investigate the relationships between the power sources and the chemical compositions of galaxies for understanding the scenario of galaxy evolution. We carried…