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- Center for Astrophysics Harvard & SmithsonianUS325 papers
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6 papers · 2 filters
The non-thermal superbubble in IC 10: the generation of cosmic ray electrons caught in the act
Volker Heesen, Elias Brinks, Martin G. H. Krause +6
Superbubbles are crucial for stellar feedback, with supposedly high (of the order of 10 per cent) thermalization rates. We combined multiband radio continuum observations from the…
IN-SYNC II: Virial Stars from Sub-Virial Cores -- The Velocity Dispersion of Embedded Pre-Main-Sequence Stars in NGC 1333
Jonathan B. Foster, Michiel Cottaar, Kevin R. Covey +14
The initial velocity dispersion of newborn stars is a major unconstrained aspect of star formation theory. Using near-infrared spectra obtained with the APOGEE spectrograph, we sho…
Shrinking Galaxy Disks with Fountain-Driven Accretion from the Halo
Bruce G. Elmegreen, Curtis Struck, Deidre A. Hunter
Star formation in most galaxies requires cosmic gas accretion because the gas consumption time is short compared to the Hubble time. This accretion presumably comes from a combinat…
Legacy ExtraGalactic UV Survey (LEGUS) with The Hubble Space Telescope. I. Survey Description
D. Calzetti, J. C. Lee, E. Sabbi +46
The Legacy ExtraGalactic UV Survey (LEGUS) is a Cycle 21 Treasury program on the Hubble Space Telescope, aimed at the investigation of star formation and its relation with galactic…
Hierarchical Star Formation in Nearby LEGUS Galaxies
Debra Meloy Elmegreen, Bruce G. Elmegreen, Angela Adamo +19
Hierarchical structure in ultraviolet images of 12 late-type LEGUS galaxies is studied by determining the numbers and fluxes of nested regions as a function of size from ~1 to ~200…
Constraints on the Progenitor System of the Type Ia Supernova 2014J from Pre-Explosion Hubble Space Telescope Imaging
Patrick L. Kelly, Ori D. Fox, Alexei V. Filippenko +7
We constrain the properties of the progenitor system of the highly reddened Type Ia supernova (SN) 2014J in Messier 82 (M82; d ~ 3.5 Mpc). We determine the SN location using Keck-I…