TY - JOUR
T1 - Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM
AU - Ohsawa, Ryou
AU - Sako, Shigeyuki
AU - Sarugaku, Yuki
AU - Usui, Fumihiko
AU - Ootsubo, Takafumi
AU - Fujiwara, Yasunori
AU - Sato, Mikiya
AU - Kasuga, Toshihiro
AU - Arimatsu, Ko
AU - Watanabe, Jun ichi
AU - Doi, Mamoru
AU - Kobayashi, Naoto
AU - Takahashi, Hidenori
AU - Motohara, Kentaro
AU - Morokuma, Tomoki
AU - Konishi, Masahiro
AU - Aoki, Tsutomu
AU - Soyano, Takao
AU - Tarusawa, Ken'ichi
AU - Mori, Yuki
AU - Nakada, Yoshikazu
AU - Ichiki, Makoto
AU - Arima, Noriaki
AU - Kojima, Yuto
AU - Morita, Masahiro
AU - Shigeyama, Toshikazu
AU - Ita, Yoshifusa
AU - Kokubo, Mitsuru
AU - Mitsuda, Kazuma
AU - Maehara, Hiroyuki
AU - Tominaga, Nozomu
AU - Yamashita, Takuya
AU - Ikeda, Shiro
AU - Morii, Mikio
AU - Urakawa, Seitaro
AU - Okumura, Shin ichiro
AU - Yoshikawa, Makoto
N1 - Funding Information:
This research is supported in part by JSPS Grants-in-Aid for Scientific Research (KAKENHI), Japan : Grant Numbers JP16H02158 , JP16H06341 , JP18H01261 , and JP18K13599 . This research is in part supported by JSPS Grant-in-Aid for Scientific Research on Innovative Areas, Japan : Grant Number JP2905 . This is also supported in part by PRESTO, Japan Science and Technology Agency (JST), Japan . This work is also supported by the Optical and Near-infrared Astronomy Inter-University Cooperation Program by the MEXT of Japan . This work is achieved using the grant of Joint Development Research by the Research Coordination Committee of National Astronomical Observatory of Japan (NAOJ) . The fabrication of Tomo-e PM is conducted in collaboration with the Advanced Technology Center of NAOJ. This research is supported by Canon Inc. for developing the full-HD high-sensitivity CMOS sensors.
Funding Information:
This research is supported in part by JSPS Grants-in-Aid for Scientific Research (KAKENHI), Japan: Grant Numbers JP16H02158, JP16H06341, JP18H01261, and JP18K13599. This research is in part supported by JSPS Grant-in-Aid for Scientific Research on Innovative Areas, Japan: Grant Number JP2905. This is also supported in part by PRESTO, Japan Science and Technology Agency (JST), Japan. This work is also supported by the Optical and Near-infrared Astronomy Inter-University Cooperation Program by the MEXT of Japan. This work is achieved using the grant of Joint Development Research by the Research Coordination Committee of National Astronomical Observatory of Japan (NAOJ). The fabrication of Tomo-e PM is conducted in collaboration with the Advanced Technology Center of NAOJ. This research is supported by Canon Inc. for developing the full-HD high-sensitivity CMOS sensors.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/1
Y1 - 2019/1
N2 - Imaging observations of faint meteors were carried out on April 11 and 14, 2016 with a wide-field CMOS mosaic camera, Tomo-e PM, mounted on the 105-cm Schmidt telescope at Kiso Observatory, the University of Tokyo. Tomo-e PM, which is a prototype model of Tomo-e Gozen, can monitor a sky of ∼1.98deg2 at 2 Hz. The numbers of detected meteors are 1514 and 706 on April 11 and 14, respectively. The detected meteors are attributed to sporadic meteors. Their absolute magnitudes range from +4 to +10mag in the V-band, corresponding to about 8.3×10−2 to 3.3×10−4g in mass. The present magnitude distributions we obtained are well explained by a single power-law luminosity function with a slope parameter r=3.1±0.4 and a meteor rate log10N0=−5.5±0.5. The results demonstrate a high performance of telescopic observations with a wide-field video camera to constrain the luminosity function of faint meteors. The performance of Tomo-e Gozenis about two times higher than that of Tomo-e PM. A survey with Tomo-e Gozenwill provide a more robust measurement of the luminosity function.
AB - Imaging observations of faint meteors were carried out on April 11 and 14, 2016 with a wide-field CMOS mosaic camera, Tomo-e PM, mounted on the 105-cm Schmidt telescope at Kiso Observatory, the University of Tokyo. Tomo-e PM, which is a prototype model of Tomo-e Gozen, can monitor a sky of ∼1.98deg2 at 2 Hz. The numbers of detected meteors are 1514 and 706 on April 11 and 14, respectively. The detected meteors are attributed to sporadic meteors. Their absolute magnitudes range from +4 to +10mag in the V-band, corresponding to about 8.3×10−2 to 3.3×10−4g in mass. The present magnitude distributions we obtained are well explained by a single power-law luminosity function with a slope parameter r=3.1±0.4 and a meteor rate log10N0=−5.5±0.5. The results demonstrate a high performance of telescopic observations with a wide-field video camera to constrain the luminosity function of faint meteors. The performance of Tomo-e Gozenis about two times higher than that of Tomo-e PM. A survey with Tomo-e Gozenwill provide a more robust measurement of the luminosity function.
KW - Interplanetary medium
KW - Meteoroids
KW - Meteors
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U2 - 10.1016/j.pss.2018.09.006
DO - 10.1016/j.pss.2018.09.006
M3 - Article
AN - SCOPUS:85053711537
VL - 165
SP - 281
EP - 292
JO - Planetary and Space Science
JF - Planetary and Space Science
SN - 0032-0633
ER -