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146 papers
Extended ionized gas clouds in the Abell 1367 cluster
Masafumi Yagi, Michitoshi Yoshida, Giuseppe Gavazzi +3
We surveyed a central 0.6 deg^2 region of Abell 1367 cluster for extended ionized gas clouds (EIGs) using the Subaru prime-focus camera (Suprime-Cam) with a narrow-band filter that…
The halo of M49 and its environment as traced by planetary nebulae
J. Hartke, M. Arnaboldi, A. Longobardi +4
The galaxy M49 (NGC 4472) is the brightest early-type galaxy in the Virgo Cluster. It is located in Subcluster B and has an unusually blue, metal-poor outer halo. Planetary nebulae…
Giant H nebula surrounding the starburst merger NGC 6240
Michitoshi Yoshida, Masafumi Yagi, Youichi Ohyama +4
We revealed the detailed structure of a vastly extended H-emitting nebula ("H nebula") surrounding the starburst/merging galaxy NGC 6240 by deep narrow-band imaging observati…
The Subaru COSMOS 20: Subaru Optical Imaging of the HST COSMOS Field with 20 Filters
Y. Taniguchi, M. Kajisawa, M. A. R. Kobayashi +27
We present both the observations and the data reduction procedures of the Subaru COSMOS 20 project that is an optical imaging survey of the HST COSMOS field, carried out by using S…
The planetary nebula population in the halo of M87
A. Longobardi, M. Arnaboldi, O. Gerhard +3
We investigate the diffuse light in the outer regions of the nearby elliptical galaxy M87 in the Virgo cluster, using planetary nebulas (PNs) as tracers. The surveyed areas (0.43 s…
The Planetary Nebulae Luminosity Function and distances to Virgo, Hydra I and Coma clusters
Magda Arnaboldi, Alessia Longobardi, Ortwin Gerhard +1
The luminosity function of planetary nebulae populations in galaxies within 10-15 Mpc distance has a cut-off at bright magnitudes and a functional form that is observed to be invar…