Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Olguin, Fernando"'
Autor:
Saha, Piyali, Sanhueza, Patricio, Padovani, Marco, Girart, Josep M., Cortes, Paulo, Morii, Kaho, Liu, Junhao, Sanchez-Monge, A., Galli, Daniele, Basu, Shantanu, Koch, Patrick M., Beltran, Maria T., Li, Shanghuo, Beuther, Henrik, Stephens, Ian W., Nakamura, Fumitaka, Zhang, Qizhou, Jiao, Wenyu, Fernandez-Lopez, M., Hwang, Jihye, Chung, Eun Jung, Pattle, Kate, Zapata, Luis A., Xu, Fengwei, Olguin, Fernando A., Kang, Ji-hyun, Karoly, Janik, Law, Chi-Yan, Wang, Jia-Wei, Csengeri, Timea, Lu, Xing, Cheng, Yu, Kim, Jongsoo, Choudhury, Spandan, Chen, Huei-Ru Vivien, Hull, Charles L. H.
The contribution of the magnetic field to the formation of high-mass stars is poorly understood. We report the high-angular resolution ($\sim0.3^{\prime\prime}$, 870 au) map of the magnetic field projected on the plane of the sky (B$_\mathrm{POS}$) t
Externí odkaz:
http://arxiv.org/abs/2407.16654
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:
Cortes, Paulo C., Girart, Josep M., Sanhueza, Patricio, Liu, Junhao, Martin, Sergio, Stephens, Ian W., Beuther, Henrik, Koch, Patrick M., Fernandez-Lopez, M., Sanchez-Monge, Alvaro, Wang, Jia-Wei, Morii, Kaho, Li, Shanghuo, Saha, Piyali, Zhang, Qizhou, Rebolledo, David, Zapata, Luis A., Kang, Ji-hyun, Jiao, Wenyu, Kim, Jongsoo, Cheng, Yu, Hwang, Jihye, Chung, Eun Jung, Choudhury, Spandan, Lyo, A-Ran, Olguin, Fernando
We report on ALMA observations of polarized dust emission at 1.2 mm from NGC6334I, a source known for its significant flux outbursts. Between five months, our data show no substantial change in total intensity and a modest 8\% variation in linear pol
Externí odkaz:
http://arxiv.org/abs/2406.14663
Autor:
Morii, Kaho, Sanhueza, Patricio, Zhang, Qizhou, Nakamura, Fumitaka, Li, Shanghuo, Sabatini, Giovanni, Olguin, Fernando A., Beuther, Henrik, Tafoya, Daniel, Izumi, Natsuko, Tatematsu, Ken'ichi, Sakai, Takeshi
Fragmentation during the early stages of high-mass star formation is crucial for understanding the formation of high-mass clusters. We investigated fragmentation within thirty-nine high-mass star-forming clumps as part of the Atacama Large Millimeter
Externí odkaz:
http://arxiv.org/abs/2403.07058
Autor:
Li, Shanghuo, Sanhueza, Patricio, Beuther, Henrik, Chen, Huei-Ru Vivien, Kuiper, Rolf, Olguin, Fernando A., Pudritz, Ralph E., Stephens, Ian W., Zhang, Qizhou, Nakamura, Fumitaka, Lu, Xing, Kuruwita, Rajika L., Sakai, Takeshi, Henning, Thomas, Taniguchi, Kotomi, Li, Fei
The dominant mechanism forming multiple stellar systems in the high-mass regime (M$_\ast \gtrsim $ 8 $M_{\odot}$) remained unknown because direct imaging of multiple protostellar systems at early phases of high-mass star formation is very challenging
Externí odkaz:
http://arxiv.org/abs/2401.06545
Autor:
Izumi, Natsuko, Sanhueza, Patricio, Koch, Patrick M., Lu, Xing, Li, Shanghuo, Sabatini, Giovanni, Olguin, Fernando A., Zhang, Qizhou, Nakamura, Fumitaka, Tatematsu, Ken'ichi, Morii, Kaho, Sakai, Takeshi, Tafoya, Daniel
Massive infrared dark clouds (IRDCs) are considered to host the earliest stages of high-mass star formation. In particular, 70 $\mu$m dark IRDCs are the colder and more quiescent clouds. At a scale of about 5000 au using formaldehyde (H2CO) emission,
Externí odkaz:
http://arxiv.org/abs/2312.03935
Autor:
Morii, Kaho, Sanhueza, Patricio, Nakamura, Fumitaka, Zhang, Qizhou, Sabatini, Giovanni, Beuther, Henrik, Lu, Xing, Li, Shanghuo, Garay, Guido, Jackson, James M., Olguin, Fernando A., Tafoya, Daniel, Tatematsu, Ken'ichi, Izumi, Natsuko, Sakai, Takeshi, Silva, Andrea
The initial conditions found in infrared dark clouds (IRDCs) provide insights on how high-mass stars and stellar clusters form. We have conducted high-angular resolution and high-sensitivity observations toward thirty-nine massive IRDC clumps, which
Externí odkaz:
http://arxiv.org/abs/2304.01757
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
Autor:
Ginsburg, Adam, McGuire, Brett A., Sanhueza, Patricio, Olguin, Fernando, Maud, Luke T, Tanaka, Kei E. I., Zhang, Yichen, Beuther, Henrik, Indriolo, Nick
Molecular lines tracing the orbital motion of gas in a well-defined disk are valuable tools for inferring both the properties of the disk and the star it surrounds. Lines that arise only from a disk, and not also from the surrounding molecular cloud
Externí odkaz:
http://arxiv.org/abs/2211.02502
Autor:
Olguin, Fernando A., Sanhueza, Patricio, Ginsburg, Adam, Chen, Huei-Ru Vivien, Zhang, Qizhou, Li, Shanghuo, Lu, Xing, Sakai, Takeshi
We observed the high-mass protostellar core G335.579-0.272 ALMA1 at ${\sim}200$ au (0.05") resolution with the Atacama Large Millimeter/submillimeter Array (ALMA) at 226 GHz (with a mass sensitivity of $5\sigma=0.2$ M$_\odot$ at 10 K). We discovered
Externí odkaz:
http://arxiv.org/abs/2203.04333