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11 papers · 2 filters
r-Process enrichment in the Galactic halo characterized by nucleosynthesis variation in the ejecta of coalescing neutron star binaries
Takuji Tsujimoto, Nobuya Nishimura, Koutarou Kyutoku
A large star-to-star variation in the abundances of r-process elements, as seen in the [Eu/Fe] ratio for Galactic halo stars, is a prominent feature that is distinguishable from ot…
Gas filaments of the cosmic web located around active galaxies in a proto-cluster
H. Umehata, M. Fumagalli, I. Smail +15
Cosmological simulations predict the Universe contains a network of intergalactic gas filaments, within which galaxies form and evolve. However, the faintness of any emission from…
Astro2020 Science White Paper: Exploration and characterization of the earliest epoch of galaxy formation: beyond the re-ionization era
Kotaro Kohno, Yoichi Tamura, Akio Inoue +9
State-of-the-art rest-frame UV and FIR photometric and spectroscopic observations are now pushing the redshift frontiers of galaxy formation studies up to and beyond. R…
A 3 mm Spectral Line Survey toward the Barred Spiral Galaxy NGC 3627
Yoshimasa Watanabe, Yuri Nishimura, Kazuo Sorai +3
We conduct spectral line survey observations in the 3 mm band toward a spiral arm, a bar-end, and a nuclear region of the nearby barred spiral galaxy NGC 3627 with the IRAM 30 m te…
CNO emission of an unlensed submillimeter galaxy at z=4.3
Ken-ichi Tadaki, Daisuke Iono, Bunyo Hatsukade +10
We present the results from ALMA observations of [NII]205 micron, [CII]158 micron, and [OII]88 micron lines in an unlensed submillimeter galaxy at z=4.3, COSMOS-AzTEC-1, hosting a…
Filamentary Accretion Flows in the Infrared Dark Cloud G14.225-0.506 Revealed by ALMA
Huei-Ru Vivien Chen, Qizhou Zhang, M. C. H. Wright +10
Filaments are ubiquitous structures in molecular clouds and play an important role in the mass assembly of stars. We present results of dynamical stability analyses for filaments i…