Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Aizawa, Masataka"'
This study proposes an analytical framework for deriving the surface brightness profile and geometry of a geometrically-thin axisymmetric disc from interferometric observation of continuum emission. Such precise modelling facilitates the exploration
Externí odkaz:
http://arxiv.org/abs/2406.14006
More than a thousand warm debris disks have been detected as infrared excess at mid-infrared wavelengths, and their frequencies have been obtained for various spectral types of stars. However, the dependence of the frequencies on spectral type is sti
Externí odkaz:
http://arxiv.org/abs/2404.03907
Autor:
Kawata, Daisuke, Kawahara, Hajime, Gouda, Naoteru, Secrest, Nathan J., Kano, Ryouhei, Kataza, Hirokazu, Isobe, Naoki, Ohsawa, Ryou, Usui, Fumihiko, Yamada, Yoshiyuki, Graham, Alister W., Pettitt, Alex R., Asada, Hideki, Baba, Junichi, Bekki, Kenji, Dorland, Bryan N., Fujii, Michiko, Fukui, Akihiko, Hattori, Kohei, Hirano, Teruyuki, Kamizuka, Takafumi, Kashima, Shingo, Kawanaka, Norita, Kawashima, Yui, Klioner, Sergei A., Kodama, Takanori, Koshimoto, Naoki, Kotani, Takayuki, Kuzuhara, Masayuki, Levine, Stephen E., Majewski, Steven R., Masuda, Kento, Matsunaga, Noriyuki, Miyakawa, Kohei, Miyoshi, Makoko, Morihana, Kumiko, Nishi, Ryoichi, Notsu, Yuta, Omiya, Masashi, Sanders, Jason, Tanikawa, Ataru, Tsujimoto, Masahiro, Yano, Taihei, Aizawa, Masataka, Arimatsu, Ko, Biermann, Michael, Boehm, Celine, Chiba, Masashi, Debattista, Victor P., Gerhard, Ortwin, Hirabayashi, Masayuki, Hobbs, David, Ikenoue, Bungo, Izumiura, Hideyuki, Jordi, Carme, Kohara, Naoki, Löffler, Wolfgang, Luri, Xavier, Mase, Ichiro, Miglio, Andrea, Mitsuda, Kazuhisa, Newswander, Trent, Nishiyama, Shogo, Obuchi, Yoshiyuki, Ootsubo, Takafumi, Ouchi, Masami, Ozaki, Masanobu, Perryman, Michael, Prusti, Timo, Ramos, Pau, Read, Justin I., Rich, R. Michael, Schönrich, Ralph, Shikauchi, Minori, Shimizu, Risa, Suematsu, Yoshinori, Tada, Shotaro, Takahashi, Aoi, Tatekawa, Takayuki, Tatsumi, Daisuke, Tsujimoto, Takuji, Tsuzuki, Toshihiro, Urakawa, Seitaro, Uraguchi, Fumihiro, Utsunomiya, Shin, Van Eylen, Vincent, van Leeuwen, Floor, Wada, Takehiko, Walton, Nicholas A.
Japan Astrometry Satellite Mission for INfrared Exploration (JASMINE) is a planned M-class science space mission by the Institute of Space and Astronautical Science, the Japan Aerospace Exploration Agency. JASMINE has two main science goals. One is t
Externí odkaz:
http://arxiv.org/abs/2307.05666
We develop a general framework to compute photometric variations induced by the oblique rotation of a star with an axisymmetric inhomogeneous surface. We apply the framework to compute lightcurves of white dwarfs adopting two simple models of their s
Externí odkaz:
http://arxiv.org/abs/2210.05421
Autor:
Feng, Fabo, Butler, R. Paul, Vogt, Steven S., Clement, Matthew S., Tinney, C. G., Cui, Kaiming, Aizawa, Masataka, Jones, Hugh R. A., Bailey, J., Burt, Jennifer, Carter, B. D., Crane, Jeffrey D., Dotti, Francesco Flammini, Holden, Bradford, Ma, Bo, Ogihara, Masahiro, Oppenheimer, Rebecca, O'Toole, S. J., Shectman, Stephen A., Wittenmyer, Robert A., Wang, Sharon X., Wright, D. J., Xuan, Yifan
Publikováno v:
ApJS 262 21 (2022)
We analyze 5108 AFGKM stars with at least five high precision radial velocity points as well as Gaia and Hipparcos astrometric data utilizing a novel pipeline developed in previous work. We find 914 radial velocity signals with periods longer than 10
Externí odkaz:
http://arxiv.org/abs/2208.12720
Autor:
Aizawa, Masataka, Kawana, Kojiro, Kashiyama, Kazumi, Ohsawa, Ryou, Kawahara, Hajime, Naokawa, Fumihiro, Tajiri, Tomoyuki, Arima, Noriaki, Jiang, Hanchun, Hartwig, Tilman, Fujisawa, Kotaro, Shigeyama, Toshikazu, Arimatsu, Ko, Doi, Mamoru, Kasuga, Toshihiro, Kobayashi, Naoto, Kondo, Sohei, Mori, Yuki, Okumura, Shin-ichiro, Takita, Satoshi, Sako, Shigeyuki
We report a one-second-cadence wide-field survey for M-dwarf flares using the Tomo-e Gozen camera mounted on the Kiso Schmidt telescope. We detect 22 flares from M3-M5 dwarfs with rise times and amplitudes ranging from $5\, \mathrm{sec} \lesssim t_\m
Externí odkaz:
http://arxiv.org/abs/2206.12847
Autor:
Ge, Jian, Zhang, Hui, Zang, Weicheng, Deng, Hongping, Mao, Shude, Xie, Ji-Wei, Liu, Hui-Gen, Zhou, Ji-Lin, Willis, Kevin, Huang, Chelsea, Howell, Steve B., Feng, Fabo, Zhu, Jiapeng, Yao, Xinyu, Liu, Beibei, Aizawa, Masataka, Zhu, Wei, Li, Ya-Ping, Ma, Bo, Ye, Quanzhi, Yu, Jie, Xiang, Maosheng, Yu, Cong, Liu, Shangfei, Yang, Ming, Wang, Mu-Tian, Shi, Xian, Fang, Tong, Zong, Weikai, Liu, Jinzhong, Zhang, Yu, Zhang, Liyun, El-Badry, Kareem, Shen, Rongfeng, Tam, Pak-Hin Thomas, Hu, Zhecheng, Yang, Yanlv, Zou, Yuan-Chuan, Wu, Jia-Li, Lei, Wei-Hua, Wei, Jun-Jie, Wu, Xue-Feng, Sun, Tian-Rui, Wang, Fa-Yin, Zhang, Bin-Bin, Xu, Dong, Yang, Yuan-Pei, Li, Wen-Xiong, Xiang, Dan-Feng, Wang, Xiaofeng, Wang, Tinggui, Zhang, Bing, Jia, Peng, Yuan, Haibo, Zhang, Jinghua, Wang, Sharon Xuesong, Gan, Tianjun, Wang, Wei, Zhao, Yinan, Liu, Yujuan, Wei, Chuanxin, Kang, Yanwu, Yang, Baoyu, Qi, Chao, Liu, Xiaohua, Zhang, Quan, Zhu, Yuji, Zhou, Dan, Zhang, Congcong, Yu, Yong, Zhang, Yongshuai, Li, Yan, Tang, Zhenghong, Wang, Chaoyan, Wang, Fengtao, Li, Wei, Cheng, Pengfei, Shen, Chao, Li, Baopeng, Pan, Yue, Yang, Sen, Gao, Wei, Song, Zongxi, Wang, Jian, Zhang, Hongfei, Chen, Cheng, Wang, Hui, Zhang, Jun, Wang, Zhiyue, Zeng, Feng, Zheng, Zhenhao, Zhu, Jie, Guo, Yingfan, Zhang, Yihao, Li, Yudong, Wen, Lin, Feng, Jie, Chen, Wen, Chen, Kun, Han, Xingbo, Yang, Yingquan, Wang, Haoyu, Duan, Xuliang, Huang, Jiangjiang, Liang, Hong, Bi, Shaolan, Gai, Ning, Ge, Zhishuai, Guo, Zhao, Huang, Yang, Li, Gang, Li, Haining, Li, Tanda, Yuxi, Lu, Rix, Hans-Walter, Shi, Jianrong, Song, Fen, Tang, Yanke, Ting, Yuan-Sen, Wu, Tao, Wu, Yaqian, Yang, Taozhi, Yin, Qing-Zhu, Gould, Andrew, Lee, Chung-Uk, Dong, Subo, Yee, Jennifer C., Shvartzvald, Yossi, Yang, Hongjing, Kuang, Renkun, Zhang, Jiyuan, Liao, Shilong, Qi, Zhaoxiang, Yang, Jun, Zhang, Ruisheng, Jiang, Chen, Ou, Jian-Wen, Li, Yaguang, Beck, Paul, Bedding, Timothy R., Campante, Tiago L., Chaplin, William J., Christensen-Dalsgaard, Jørgen, García, Rafael A., Gaulme, Patrick, Gizon, Laurent, Hekker, Saskia, Huber, Daniel, Khanna, Shourya, Mathur, Savita, Miglio, Andrea, Mosser, Benoît, Ong, J. M. Joel, Santos, Ângela R. G., Stello, Dennis, Bowman, Dominic M., Lares-Martiz, Mariel, Murphy, Simon, Niu, Jia-Shu, Ma, Xiao-Yu, Molnár, László, Fu, Jian-Ning, De Cat, Peter, Su, Jie, consortium, the ET
We propose to develop a wide-field and ultra-high-precision photometric survey mission, temporarily named "Earth 2.0 (ET)". This mission is designed to measure, for the first time, the occurrence rate and the orbital distributions of Earth-sized plan
Externí odkaz:
http://arxiv.org/abs/2206.06693
The time series of light reflected from exoplanets by future direct imaging can provide spatial information with respect to the planetary surface. We apply sparse modeling to the retrieval method that disentangles the spatial and spectral information
Externí odkaz:
http://arxiv.org/abs/2204.01996
Autor:
Kasagi, Yui, Kotani, Takayuki, Kawahara, Hajime, Tajiri, Tomoyuki, Muto, Takayuki, Aizawa, Masataka, Fujii, Michiko S., Hattori, Kohei, Masuda, Kento, Momose, Munetake, Ohsawa, Ryou, Takita, Satoshi
Photometric monitoring by the Transiting Exoplanet Survey Satellite (TESS) has discovered not only periodic signals by transiting exoplanets but also episodic or quasi-periodic dimming around young stellar objects. The mechanisms of the dimming of th
Externí odkaz:
http://arxiv.org/abs/2201.09459
Autor:
Tajiri, Tomoyuki, Kawahara, Hajime, Aizawa, Masataka, Fujii, Michiko S., Hattori, Kohei, Kasagi, Yui, Kotani, Takayuki, Masuda, Kento, Momose, Munetake, Muto, Takayuki, Ohsawa, Ryou, Takita, Satoshi
We present a comprehensive catalog of the dippers---young stellar objects that exhibit episodic dimming---derived from the one year's worth of data of Transiting Exoplanet Survey Satellite ($ TESS$) full-frame images. In the survey, we found 35 dippe
Externí odkaz:
http://arxiv.org/abs/2009.12830