Zobrazeno 1 - 10
of 164
pro vyhledávání: '"SAKAMOTO, Kazushi"'
Autor:
Kishikawa, Ryo, Harada, Nanase, Saito, Toshiki, Aalto, Susanne, Colzi, Laura, Gorski, Mark, Henkel, Christian, Mangum, Jeffrey G., Martín, Sergio, Muller, Sebastian, Nishimura, Yuri, Rivilla, Víctor M., Sakamoto, Kazushi, van der Werf, Paul, Viti, Serena
It is essential to examine the physical or chemical properties of molecular gas in starburst galaxies to reveal the underlying mechanisms characterizing starbursts. We used non-negative matrix factorization (NMF) to extract individual molecular or ph
Externí odkaz:
http://arxiv.org/abs/2411.03867
Autor:
Hirota, Akihiko, Koda, Jin, Egusa, Fumi, Sawada, Tsuyoshi, Sakamoto, Kazushi, Heyer, Mark, Lee, Amanda M, Maeda, Fumiya, Boissier, Samuel, Calzetti, Daniela, Elmegreen, Bruce G., Harada, Nanase, Ho, Luis C., Kobayashi, Masato I. N., Kuno, Nario, Madore, Barry F., Martín, Sergio, Meyer, Jennifer Donovan, Muraoka, Kazuyuki, Watanabe, Yoshimasa
We present a catalog of clouds identified from the $^{12}$CO (1--0) data of M83, which was observed using Atacama Large Millimeter/submillimeter Array (ALMA) with a spatial resolution of $\sim$46 pc and a mass sensitivity of $\sim$10$^4$ $M_{\odot}$
Externí odkaz:
http://arxiv.org/abs/2410.05424
Autor:
Behrens, Erica, Mangum, Jeffrey G., Viti, Serena, Holdship, Jonathan, Huang, Ko-Yun, Bouvier, Mathilde, Butterworth, Joshua, Eibensteiner, Cosima, Harada, Nanase, Martin, Sergio, Sakamoto, Kazushi, Muller, Sebastien, Tanaka, Kunihiko, Colzi, Laura, Henkel, Christian, Meier, David S., Rivilla, Victor M., van der Werf, Paul P.
We use a neural network model and ALMA observations of HCN and HNC to constrain the physical conditions, most notably the cosmic-ray ionization rate (CRIR, zeta), in the Central Molecular Zone (CMZ) of the starburst galaxy NGC 253. Using output from
Externí odkaz:
http://arxiv.org/abs/2409.13821
The HNC/HCN ratio is observationally known as a thermometer in Galactic interstellar molecular clouds. A recent study has alternatively suggested that the HNC/HCN ratio is affected by the ultraviolet (UV) field, not by the temperature. We aim to stud
Externí odkaz:
http://arxiv.org/abs/2405.09029
Autor:
Bao, Min, Harada, Nanase, Kohno, Kotaro, Yoshimura, Yuki, Egusa, Fumi, Nishimura, Yuri, Tanaka, Kunihiko, Nakanishi, Kouichiro, Martín, Sergio, Mangum, Jeffrey G., Sakamoto, Kazushi, Muller, Sébastien, Bouvier, Mathilde, Colzi, Laura, Emig, Kimberly L., Meier, David S., Henkel, Christian, Humire, Pedro, Huang, Ko-Yun, Rivilla, Víctor M., van der Werf, Paul, Viti, Serena
The physical properties of galactic molecular outflows are important as they could constrain outflow formation mechanisms. We study the properties of the southwest (SW) outflow streamer including gas kinematics, optical depth, dense gas fraction, and
Externí odkaz:
http://arxiv.org/abs/2404.04791
Autor:
Harada, Nanase, Meier, David S., Martín, Sergio, Muller, Sebastien, Sakamoto, Kazushi, Saito, Toshiki, Gorski, Mark D., Henkel, Christian, Tanaka, Kunihiko, Mangum, Jeffrey G., Aalto, Susanne, Aladro, Rebeca, Bouvier, Mathilde, Colzi, Laura, Emig, Kimberly L., Herrero-Illana, Rubén, Huang, Ko-Yun, Kohno, Kotaro, König, Sabine, Nakanishi, Kouichiro, Nishimura, Yuri, Takano, Shuro, Rivilla, Víctor M., Viti, Serena, Watanabe, Yoshimasa, van der Werf, Paul P., Yoshimura, Yuki
Molecular lines are powerful diagnostics of the physical and chemical properties of the interstellar medium (ISM). These ISM properties, which affect future star formation, are expected to differ in starburst galaxies from those of more quiescent gal
Externí odkaz:
http://arxiv.org/abs/2401.02578
Autor:
Tanaka, Kunihiko, Mangum, Jeffrey G., Viti, Serena, Martin, Sergio, Harada, Nanase, Sakamoto, Kazushi, Muller, Sebastien, Yoshimura, Yuki, Nakanishi, Kouichiro, Illana, Ruben Herrero, Emig, Kimberly L., Muhle, S., Kaneko, Hiroyuki, Tosaki, Tomoka, Behrens, Erica, Rivilla, Victor M., Colzi, Laura, Nishimura, Yuri, Humire, P. K., Bouvier, Mathilde, Huang, Ko-Yun, Butterworth, Joshua, Meier, David S., van der Werf, Paul P.
We present a spatially-resolved excitation analysis for the central molecular zone (CMZ) of the starburst galaxy NGC 253 using the data from the ALMA Large program ALCHEMI, whereby we explore parameters distinguishing NGC 253 from the quiescent Milky
Externí odkaz:
http://arxiv.org/abs/2311.12106
Autor:
Ohyama, Youichi, Onishi, Shusuke, Nakagawa, Takao, Matsumoto, Kosei, Isobe, Naoki, Shirahata, Mai, Baba, Shunsuke, Sakamoto, Kazushi
We investigated the inner buried nucleus of a nearby luminous infrared galaxy NGC 4418 using high-resolution spectroscopy of fundamental carbon monoxide (CO) ro-vibrational absorptions around $4.67 \mu$m for the first time. This method allowed us to
Externí odkaz:
http://arxiv.org/abs/2305.09959
Autor:
Koda, Jin, Hirota, Akihiko, Egusa, Fumi, Sakamoto, Kazushi, Sawada, Tsuyoshi, Heyer, Mark, Baba, Junichi, Boissier, Samuel, Calzetti, Daniela, Meyer, Jennifer Donovan, Elmegreen, Bruce G., de Paz, Armando Gil, Harada, Nanase, Ho, Luis C., Kobayashi, Masato I. N., Kuno, Nario, Lee, Amanda M, Madore, Barry F., Maeda, Fumiya, Martin, Sergio, Muraoka, Kazuyuki, Nakanishi, Kouichiro, Onodera, Sachiko, Pineda, Jorge L., Scoville, Nick, Watanabe, Yoshimasa
We present high-fidelity CO(1-0) imaging of molecular gas across the full star-forming disk of M83, using ALMA's 12m, 7m, and TP arrays and the MIRIAD package. The data have a mass sensitivity and resolution of 10^4Msun and 40 pc. The full disk cover
Externí odkaz:
http://arxiv.org/abs/2303.12108
Autor:
Behrens, Erica, Mangum, Jeffrey G., Holdship, Jonathan, Viti, Serena, Harada, Nanase, Martin, Sergio, Sakamoto, Kazushi, Muller, Sebastien, Tanaka, Kunihiko, Nakanishi, Kouichiro, Herrero-Illana, Ruben, Yoshimura, Yuki, Aladro, Rebeca, Colzi, Laura, Emig, Kimberly L., Henkel, Christian, Huang, Ko-Yun, Humire, P. K., Meier, David S., Rivilla, Victor M.
We analyze HCN and HNC emission in the nearby starburst galaxy NGC 253 to investigate its effectiveness in tracing heating processes associated with star formation. This study uses multiple HCN and HNC rotational transitions observed using ALMA via t
Externí odkaz:
http://arxiv.org/abs/2209.06244