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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…
Gas Motion Study of Lya Emitters at z~2 Using UV and Optical Spectral Lines
Takuya Hashimoto, Masami Ouchi, Kazuhiro Shimasaku +5
We present the results of Magellan/MMIRS and Keck/NIRSPEC spectroscopy for five Lya emitters (LAEs) at z=2.2 for which high-resolution FUV spectra from Magellan/MagE are available.…
Kinematics and excitation of the ram pressure stripped ionized gas filaments in the Coma cluster of galaxies
Michitoshi Yoshida, Masafumi Yagi, Yutaka Komiyama +4
We present the results of deep imaging and spectroscopic observations of very extended ionized gas (EIG) around four member galaxies of the Coma cluster of galaxies: RB199, IC4040,…
Completing the Census of Ly-alpha Emitters at the Reionization Epoch
Nobunari Kashikawa, Kazuhiro Shimasaku, Yuichi Matsuda +16
We carried out extended spectroscopic confirmations of Ly-alpha emitters (LAEs) at z=6.5 and 5.7 in the Subaru Deep Field. Now, the total number of spectroscopically confirmed LAEs…
Average Metallicity and Star Formation Rate of Lya Emitters Probed by a Triple Narrow-Band Survey
Kimihiko Nakajima, Masami Ouchi, Kazuhiro Shimasaku +9
We present the average metallicity and star-formation rate of Lya emitters (LAEs) measured from our large-area survey with three narrow-band (NB) filters covering the Lya, [OII]372…