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248 papers · 2 filters
Halo Concentrations and the Fundamental Plane of Galaxy Clusters
Yutaka Fujita, Megan Donahue, Stefano Ettori +6
According to the standard cold dark matter (CDM) cosmology, the structure of dark halos including those of galaxy clusters reflects their mass accretion history. Older clusters ten…
Quantifying the suppression of the (un)-obscured star formation in galaxy cluster cores at 0.20.9
L. Rodríguez-Muñoz, G. Rodighiero, C. Mancini +21
We quantify the star formation (SF) in the inner cores (/0.3) of 24 massive galaxy clusters at 0.20.9 observed by the …
SOFIA/FORCAST resolves 30 - 40 um extended dust emission in nearby active galactic nuclei
Lindsay Fuller, Enrique Lopez-Rodriguez, Chris Packham +7
We present arcsecond-scale observations of the active galactic nuclei (AGNs) of seven nearby Seyfert galaxies observed from the Stratospheric Observatory For Infrared Astronomy (SO…
[CII] 158 Micron Emission from z~4 HI Absorption-Selected Galaxies
Marcel Neeleman, Nissim Kanekar, J. Xavier Prochaska +2
We report on a search for the [CII] 158 micron emission line from galaxies associated with four high-metallicity damped Ly-alpha absorbers (DLAs) at z ~ 4 using the Atacama Large M…
The Spatial Relation between Young Star Clusters and Molecular Clouds in M 51 with LEGUS
K. Grasha, D. Calzetti, A. Adamo +21
We present a study correlating the spatial locations of young star clusters with those of molecular clouds in NGC~5194, in order to investigate the timescale over which clusters se…
The course of the Orphan Stream in the Northern Galactic Hemisphere traced with Gaia DR2
Mark A. Fardal, Roeland P. van der Marel, Sangmo Tony Sohn +1
The Orphan Stream is one of the most prominent tidal streams in the Galactic halo. Using data on red giants, RR Lyrae, and horizontal branch stars from Gaia and other surveys, we d…