Zobrazeno 1 - 10
of 765
pro vyhledávání: '"Saito, Masao"'
Autor:
Yasui, Chikako, Izumi, Natsuko, Saito, Masao, Lau, Ryan M., Kobayashi, Naoto, Ressler, Michael E.
We present the substellar mass function of star-forming clusters ($\simeq$0.1 Myr old) in a low-metallicity environment ($\simeq$$-$0.7 dex). We performed deep JWST/NIRCam and MIRI imaging of two star-forming clusters in Digel Cloud 2, a star-forming
Externí odkaz:
http://arxiv.org/abs/2408.15440
Autor:
Izumi, Natsuko, Ressler, Michael E., Lau, Ryan M., Koch, Patrick M., Saito, Masao, Kobayashi, Naoto, Yasui, Chikako
The extreme outer Galaxy (EOG), which we define as the region of the Milky Way with a galactocentric radius of more than 18 kpc, provides an excellent opportunity to study star formation in an environment significantly different from that in the sola
Externí odkaz:
http://arxiv.org/abs/2407.07822
Autor:
Ishihara, Kosuke, Sanhueza, Patricio, Nakamura, Fumitaka, Saito, Masao, Chen, Huei-Ru V., Li, Shanghuo, Olguin, Fernando, Taniguchi, Kotomi, Morii, Kaho, Lu, Xing, Luo, Qiuyi, Sakai, Takeshi, Zhang, Qizhou
Fragmentation contributes to the formation and evolution of stars. Observationally, high-mass stars are known to form multiple-star systems, preferentially in cluster environments. Theoretically, Jeans instability has been suggested to determine char
Externí odkaz:
http://arxiv.org/abs/2407.06845
Autor:
Taniguchi, Kotomi, Rayalacheruvu, Prathap, Yonetsu, Teppei, Takekoshi, Tatsuya, Hatsukade, Bunyo, Kohno, Kotaro, Oshima, Tai, Tamura, Yoichi, Yoshimura, Yuki, Gómez-Rivera, Víctor, Rojas-García, Sergio, Gómez-Ruiz, Arturo I., Hughes, David H., Schloerb, F. Peter, Majumdar, Liton, Saito, Masao, Kawabe, Ryohei
We present emission maps (1.5'$\times$1.5' scale, corresponding to 0.18 pc) of the DCN ($J=2-1$) and DCO$^+$ ($J=2-1$) lines in the 2 mm band toward the Orion KL region obtained with the 2 mm receiver system named B4R installed on the Large Millimete
Externí odkaz:
http://arxiv.org/abs/2401.06297
Autor:
Taniguchi, Kotomi, Majumdar, Liton, Caselli, Paola, Takakuwa, Shigehisa, Hsieh, Tien-Hao, Saito, Masao, Li, Zhi-Yun, Dobashi, Kazuhito, Shimoikura, Tomomi, Nakamura, Fumitaka, Tan, Jonathan C., Herbst, Eric
We present Atacama Large Millimeter/submillimeter Array Band 3 data toward five massive young stellar objects (MYSOs), and investigate relationships between unsaturated carbon-chain species and saturated complex organic molecules (COMs). An HC$_{5}$N
Externí odkaz:
http://arxiv.org/abs/2304.13873
Autor:
Taniguchi, Kotomi, Sanhueza, Patricio, Olguin, Fernando A., Gorai, Prasanta, Das, Ankan, Nakamura, Fumitaka, Saito, Masao, Zhang, Qizhou, Lu, Xing, Li, Shanghuo, Chen, Huei-Ru Vivien
We have analyzed the NH$_{2}$CHO, HNCO, H$_{2}$CO, and CH$_{3}$CN ($^{13}$CH$_{3}$CN) molecular lines at an angular resolution of $\sim 0.3''$ obtained by the Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 toward 30 high-mass star-forming
Externí odkaz:
http://arxiv.org/abs/2304.00267
We present deep near-infrared (NIR) imaging of Sh 2-209 (S209), a low-metallicity (${\rm [O/H]} = - 0.5$ dex) HII region in the Galaxy. From the NIR images, combined with astrometric data from Gaia EDR3, we estimate the distance to S209 to be 2.5 kpc
Externí odkaz:
http://arxiv.org/abs/2210.02012
Autor:
Izumi, Natsuko, Kobayashi, Naoto, Yasui, Chikako, Saito, Masao, Hamano, Satoshi, Koch, Patrick M.
The outer Galaxy beyond the Outer Arm represents a promising opportunity to study star formation in an environment vastly different from the solar neighborhood. In our previous study, we identified 788 candidate star-forming regions in the outer Gala
Externí odkaz:
http://arxiv.org/abs/2206.11508
Autor:
Taniguchi, Kotomi, Tanaka, Kei E. I., Zhang, Yichen, Fedriani, Rubén, Tan, Jonathan C., Takakuwa, Shigehisa, Nakamura, Fumitaka, Saito, Masao, Majumdar, Liton, Herbst, Eric
We have analyzed Atacama Large Millimeter/submillimeter Array Band 6 data of the hyper-compact H$_{\rm {II}}$ region G24.78+0.08 A1 (G24 HC H$_{\rm {II}}$) and report the detection of vibrationally-excited lines of HC$_{3}$N ($v_{7}=2$, $J=24-23$). T
Externí odkaz:
http://arxiv.org/abs/2204.09907