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A Fast, Hot Wind from a Nuclear Starburst
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +137
Galaxies with intense star formation often host multiphase, galaxy-scale winds powered by supernovae and fast stellar winds. These are strong enough to disrupt the star-forming int…
A XRISM/Resolve view of the dynamics in the hot gaseous atmosphere of M87
XRISM Collaboration, M. Audard, H. Awaki +138
The XRISM/Resolve microcalorimeter directly measured the gas velocities in the core of the Virgo Cluster, the closest example of AGN feedback in a cluster. This proximity allows us…
Massive star formation in the Carina nebula complex and Gum 31 -- II. a cloud-cloud collision in Gum 31
Shinji Fujita, Hidetoshi Sano, Rei Enokiya +10
We present the results of analyses of the 12CO (J=1-0), 13CO (J=1-0), and 12CO (J=2-1) emission data toward Gum 31. Three molecular clouds separated in velocity were detected at -2…
Triggered high-mass star formation in the HII region W28A2: A cloud-cloud collision scenario
Katsuhiro Hayashi, Satoshi Yoshiike, Rei Enokiya +15
We report on a study of the high-mass star formation in the the HII region W28A2 by investigating the molecular clouds extended over ~5-10 pc from the exciting stars using the 12CO…
Massive star formation in the Carina nebula complex and Gum 31 -- I. The Carina nebula complex
Shinji Fujita, Hidetoshi Sano, Rei Enokiya +10
Herein, we present results from observations of the 12CO (J=1-0), 13CO (J=1-0), and 12CO (J=2-1) emission lines toward the Carina nebula complex (CNC) obtained with the Mopra and N…
High-mass star formation in Orion B triggered by cloud-cloud collision: Merging molecular clouds in NGC 2024
Rei Enokiya, Akio Ohama, Rin Yamada +13
We performed new comprehensive CO(=2--1) observations toward NGC 2024, the most active star forming region in Orion B, with an angular resolution of 100'' obtained…
Fermi-LAT gamma-ray study of the interstellar medium and cosmic rays in the Chamaeleon Molecular-Cloud Complex: A look at the dark gas as optically thick HI
Katsuhiro Hayashi, Tsunefumi Mizuno, Yasuo Fukui +6
We report a Fermi-LAT -ray analysis for the Chamaeleon molecular-cloud complex using a total column density (NH) model based on the dust optical depth at 353 GHz () wit…
Molecular gas in a Spitzer bubble N4: possible evidence for cloud-cloud collisions as a trigger of massive star formation
Shinji Fujita, Kazufumi Torii, Kengo Tachihara +18
Herein, we present the 12CO (J=1-0) and 13CO (J=1-0) emission line observations via the FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45-m telescope (FUGIN) towar…
Massive star formation in W51A triggered by cloud-cloud collisions
Shinji Fujita, Kazufumi Torii, Nario Kuno +18
W51A is one of the most active star-forming region in our Galaxy, which contains giant molecular clouds with a total mass of 10^6 Msun. The molecular clouds have multiple velocity…
Molecular and Atomic Clouds toward the Wolf-Rayet Nebula NGC 2359: Possible Evidence for Isolated High-Mass Star Formation Triggered by a Cloud-Cloud Collision
Hidetoshi Sano, Katsuhiro Hayashi, Rei Enokiya +17
NGC 2359 is an HII region located in the outer Galaxy that contains the isolated Wolf-Rayet (WR) star HD 56925. We present millimeter/submillimeter observations of CO( =…
The Quiescent Intracluster Medium in the Core of the Perseus Cluster
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +213
Clusters of galaxies are the most massive gravitationally-bound objects in the Universe and are still forming. They are thus important probes of cosmological parameters and a host…