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67 papers · 2 filters
Stellar population synthesis of galaxies with chemical evolution model
Shiyin Shen, Jun Yin
The derivation of accurate stellar populations of galaxies is a non-trivial task because of the well-known age-metallicity degeneracy. We aim to break this degeneracy by invoking a…
The Bending Feature of the Fermi Bubbles: A Presumed Horizontal Galactic Wind and Its Implication on the Bubbles' Age
Guobin Mou, Dongze Sun, Fuguo Xie
There are two spectacular structures in our Milky Way: the {\it Fermi} bubbles in gamma-ray observations and the North Polar Spur (NPS) structure in X-ray observations. Because of…
Catalogue of High Protostellar Surface Density Regions in Nearby Embedded Clusters
Juan Li, Philip C. Myers, Helen Kirk +3
We analyze high-quality stellar catalogs for 24 young and nearby (within 1 kpc) embedded clusters and present a catalogue of 32 groups which have a high concentration of protostars…
NuSTAR Hard X-ray View of Low-luminosity Active Galactic Nuclei: High-energy Cutoff and Truncated Thin Disk
George Younes, Andrew Ptak, Luis C. Ho +5
We report the analysis of simultaneous XMM-Newton+NuSTAR observations of two low-luminosity Active Galactic Nuclei (LLAGN), NGC 3998 and NGC 4579. We do not detect any significant…
Adding a Suite of Chemical Abundances to the MACER Code for the Evolution of Massive Elliptical Galaxies
Zhaoming Gan, Ena Choi, Jeremiah P. Ostriker +2
We add a suite of chemical abundances to the MACER (Massive AGN Controlled Ellipticals Resolved) 2D code, by solving 12 additional continuity equations for H, He, C, N, O, Ne, Mg,…
Spatially resolved origin of mm-wave linear polarization in the nuclear region of 3C 84
J. -Y. Kim, T. P. Krichbaum, A. P. Marscher +12
We report results from a deep polarization imaging of the nearby radio galaxy 3C84 (NGC1275). The source was observed with the Global Millimeter VLBI Array (GMVA) at 86…