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48 papers · 1 filter
Reconstructing Orbits of Galaxies in Extreme Regions (ROGER) III: galaxy evolution patterns in projected phase space around massive X-ray clusters
Hector J. Martinez, Valeria Coenda, Hernan Muriel +2
We use the ROGER code by de los Rios et al. to classify galaxies around a sample of X-ray clusters into five classes according to their positions in the projected phase space diagr…
Gaia-IGRINS synergy: Orbits of Newly Identified Milky Way Star Clusters
Elisa R. Garro, José G. Fernández-Trincado, Dante Minniti +11
The recent exquisite Gaia astrometric, photometric, and radial velocity (RV) measurements resulted in a substantial advancement for the determination of the orbits for old star clu…
The globular cluster system of the nearest Seyfert II galaxy Circinus
C. Obasi, M. Gómez, D. Minniti +7
Context. The globular cluster (GC) system of Circinus galaxy has not been probed previously partly because of the location of the galaxy at - 3.8 Galactic latitude which su…
On different approaches to freeze-in and freeze-out leptogenesis with quasi-degenerate neutrinos
J. Racker
We compare two approaches for determining the generation of lepton asymmetry during production and decay of quasi-degenerate neutrinos, namely the density matrix formalism and a re…
Detailed analysis of the variable star population in the globular cluster NGC 7006
A. Arellano Ferro, F. C. Rojas Galindo, I. H. Bustos Fierro +3
A five year CCD photometric \emph{VI} time-series of NGC 7006 is employed to perform a detailed analysis of the known population of variable stars. In the process we have corrected…
Powerful yet lonely: Is 3C 297 a high-redshift fossil group?
Valentina Missaglia, Juan P. Madrid, Mischa Schirmer +8
The environment of the high-redshift (z=1.408), powerful radio-loud galaxy 3C 297 has several distinctive features of a galaxy cluster. Among them, a characteristic halo of hot gas…