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The correlation between the 500 pc scale molecular gas masses and AGN powers for massive elliptical galaxies
Yutaka Fujita, Takuma Izumi, Nozomu Kawakatu +3
Massive molecular clouds have been discovered in massive elliptical galaxies at the center of galaxy clusters. Some of this cold gas is expected to flow in the central supermassive…
Massive Molecular Gas as a Fuel Tank for Active Galactic Nuclei Feedback in Central Cluster Galaxies
Yutaka Fujita, Nozomu Kawakatu, Hiroshi Nagai
Massive molecular gas has been discovered in giant elliptical galaxies at the centers of galaxy clusters. To reveal its role in active galactic nucleus (AGN) feedback in those gala…
The ALMA Discovery of the Rotating Disk and Fast Outflow of Cold Molecular Gas in NGC 1275
H. Nagai, K. Onishi, N. Kawakatu +12
We present ALMA Band 6 observations of the CO(2-1), HCN(3-2), and HCO(3-2) lines in the nearby radio galaxy / brightest cluster galaxy (BCG) of NGC 1275 with the spatial reso…
Halo Concentrations and the New Baseline X-ray Luminosity-Temperature and Mass Relations of Galaxy Clusters
Yutaka Fujita, Han Aung
The standard self-similar model of galaxy cluster formation predicts that the X-ray luminosity-temperature (-) relation of galaxy clusters should have been $L_X\propto T_…
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…
A New Interpretation of the Mass-Temperature Relation and Mass Calibration of Galaxy Clusters Based on the Fundamental Plane
Yutaka Fujita, Keiichi Umetsu, Stefano Ettori +3
Observations and numerical simulations have shown that the relation between the mass scaled with the critical density of the universe and the X-ray temperature of galaxy clusters i…
Discovery of a new fundamental plane dictating galaxy cluster evolution from gravitational lensing
Yutaka Fujita, Keiichi Umetsu, Elena Rasia +5
In cold dark matter (CDM) cosmology, objects in the Universe have grown under the effect of gravity of dark matter. The intracluster gas in a galaxy cluster was heated when the dar…
Probing WHIM around Galaxy Clusters with Fast Radio Bursts and the Sunyaev-Zel'dovich effect
Yutaka Fujita, Takuya Akahori, Keiichi Umetsu +2
We propose a new method to probe the Warm Hot Intergalactic Medium (WHIM) beyond the virial radius (R_200) of a cluster of galaxies, where X-ray observations are not easily achieva…
Environmental effects on star formation in dwarf galaxies and star clusters
S. Pasetto, M. Cropper, Y. Fujita +2
We develop a simple analytical criterion to investigate the role of the environment on the onset of star formation. We will consider the main external agents that influence the sta…
Discovery of an Outstanding Disk in the cD Galaxy of the Hydra A Cluster
Yutaka Fujita, Nobuhiro Okabe, Kosuke Sato +7
The central cD galaxy of the Hydra A cluster has one of the most powerful active galactic nuclei (AGNs) in the nearby Universe (z <0.2). We report on the discovery of a dust lane i…
The Environment around the Young Massive Star Cluster RSGC 1 and HESS J1837-069
Yutaka Fujita, Hiroyuki Nakanishi, Erik Muller +5
We report on Mopra observations toward the young massive star cluster RSGC 1, adjoined by, and possibly associated with the gamma-ray source HESS J1837-069. We measure the CO (J=1-…
Dissipative phenomena in extended-bodies interactions I: Methods Dwarf galaxies of the Local Group and their synthetic CMDs
S. Pasetto, G. Bertelli, E. K. Grebel +2
Dissipative phenomena occurring during the orbital evolution of a dwarf satellite galaxy around a host galaxy may leave signatures in the star formation activity and signatures in…
Star Formation in the Cometary Tails Associated with Cluster Galaxies
Takahiro Yamagami, Yutaka Fujita
We investigate the star-formation in cometary tails of galaxies in clusters. In particular, we focus on the evolution of molecular clouds in the tails that generate the stars. Assu…
Search for the Sunyaev-Zel'dovich Effect in a Giant Radio Galaxy B1358+305
Masako YAMADA, Y. Fujita, H. Matsuo +1
We present results of an imaging observation of the central region of a giant radio galaxy B1358+305. The classical, standard scenario of Fanaroff-Riley II radio galaxies suggests…