OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk
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OGLE-2017-BLG-0406 : Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk. / Hirao, Yuki; Bennett, David P.; Ryu, Yoon-Hyun; Koshimoto, Naoki; Udalski, Andrzej; Yee, Jennifer C.; Sumi, Takahiro; Bond, Ian A.; Shvartzvald, Yossi; Abe, Fumio; Barry, Richard K.; Bhattacharya, Aparna; Donachie, Martin; Fukui, Akihiko; Itow, Yoshitaka; Kondo, Iona; Li, Man Cheung Alex; Matsubara, Yutaka; Matsuo, Taro; Miyazaki, Shota; Muraki, Yasushi; Nagakane, Masayuki; Ranc, Clement; Rattenbury, Nicholas J.; Suematsu, Haruno; Shibai, Hiroshi; Suzuki, Daisuke; Tristram, Paul J.; Yonehara, Atsunori; Skowron, J.; Poleski, R.; Mroz, P.; Szymanski, M. K.; Soszynski, I.; Kozlowski, S.; Pietrukowicz, P.; Ulaczyk, K.; Rybicki, K.; Iwanek, P.; Albrow, Michael D.; Chung, Sun-Ju; Gould, Andrew; Han, Cheongho; Hwang, Kyu-Ha; Jung, Youn Kil; Shin, In-Gu; Hundertmark, Markus; Jorgensen, U. G.; Skottfelt, J.; Fujii, Y. I.; MOA Collaboration; OGLE Collaboration; KMTNet Collaboration; Spitzer Team; LCO Fun Follow-up Teams; MiNDSTEp Collaboration; IRSF Team.
I: Astronomical Journal, Bind 160, Nr. 2, 74, 01.08.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - OGLE-2017-BLG-0406
T2 - Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk
AU - Hirao, Yuki
AU - Bennett, David P.
AU - Ryu, Yoon-Hyun
AU - Koshimoto, Naoki
AU - Udalski, Andrzej
AU - Yee, Jennifer C.
AU - Sumi, Takahiro
AU - Bond, Ian A.
AU - Shvartzvald, Yossi
AU - Abe, Fumio
AU - Barry, Richard K.
AU - Bhattacharya, Aparna
AU - Donachie, Martin
AU - Fukui, Akihiko
AU - Itow, Yoshitaka
AU - Kondo, Iona
AU - Li, Man Cheung Alex
AU - Matsubara, Yutaka
AU - Matsuo, Taro
AU - Miyazaki, Shota
AU - Muraki, Yasushi
AU - Nagakane, Masayuki
AU - Ranc, Clement
AU - Rattenbury, Nicholas J.
AU - Suematsu, Haruno
AU - Shibai, Hiroshi
AU - Suzuki, Daisuke
AU - Tristram, Paul J.
AU - Yonehara, Atsunori
AU - Skowron, J.
AU - Poleski, R.
AU - Mroz, P.
AU - Szymanski, M. K.
AU - Soszynski, I.
AU - Kozlowski, S.
AU - Pietrukowicz, P.
AU - Ulaczyk, K.
AU - Rybicki, K.
AU - Iwanek, P.
AU - Albrow, Michael D.
AU - Chung, Sun-Ju
AU - Gould, Andrew
AU - Han, Cheongho
AU - Hwang, Kyu-Ha
AU - Jung, Youn Kil
AU - Shin, In-Gu
AU - Hundertmark, Markus
AU - Jorgensen, U. G.
AU - Skottfelt, J.
AU - Fujii, Y. I.
AU - MOA Collaboration
AU - OGLE Collaboration
AU - KMTNet Collaboration
AU - Spitzer Team
AU - LCO Fun Follow-up Teams
AU - MiNDSTEp Collaboration
AU - IRSF Team
PY - 2020/8/1
Y1 - 2020/8/1
N2 - We report the discovery and analysis of the planetary microlensing event OGLE-2017-BLG-0406, which was observed both from the ground and by the Spitzer satellite in a solar orbit. At high magnification, the anomaly in the light curve was densely observed by ground-based-survey and follow-up groups, and it was found to be explained by a planetary lens with a planet/host mass ratio of q = 7.0 x 10(-4) from the light-curve modeling. The ground-only and Spitzer-"only" data each provide very strong one-dimensional (1D) constraints on the 2D microlens parallax vector pi(E). When combined, these yield a precise measurement of pi(E) and of the masses of the host M-host = 0.56 +/- 0.07 M-circle dot and planet M-planet = 0.41 +/- 0.05 M-Jup. The system lies at a distance D-L = 5.2 +/- 0.5 kpc from the Sun toward the Galactic bulge, and the host is more likely to be a disk population star according to the kinematics of the lens. The projected separation of the planet from the host is a(perpendicular to) = 3.5 +/- 0.3 au (i.e., just over twice the snow line). The Galactic-disk kinematics are established in part from a precise measurement of the source proper motion based on OGLE-IV data. By contrast, the Gaia proper-motion measurement of the source suffers from a catastrophic 10 sigma error.
AB - We report the discovery and analysis of the planetary microlensing event OGLE-2017-BLG-0406, which was observed both from the ground and by the Spitzer satellite in a solar orbit. At high magnification, the anomaly in the light curve was densely observed by ground-based-survey and follow-up groups, and it was found to be explained by a planetary lens with a planet/host mass ratio of q = 7.0 x 10(-4) from the light-curve modeling. The ground-only and Spitzer-"only" data each provide very strong one-dimensional (1D) constraints on the 2D microlens parallax vector pi(E). When combined, these yield a precise measurement of pi(E) and of the masses of the host M-host = 0.56 +/- 0.07 M-circle dot and planet M-planet = 0.41 +/- 0.05 M-Jup. The system lies at a distance D-L = 5.2 +/- 0.5 kpc from the Sun toward the Galactic bulge, and the host is more likely to be a disk population star according to the kinematics of the lens. The projected separation of the planet from the host is a(perpendicular to) = 3.5 +/- 0.3 au (i.e., just over twice the snow line). The Galactic-disk kinematics are established in part from a precise measurement of the source proper motion based on OGLE-IV data. By contrast, the Gaia proper-motion measurement of the source suffers from a catastrophic 10 sigma error.
KW - GRAVITATIONAL LENSING EXPERIMENT
KW - INTERSTELLAR EXTINCTION LAW
KW - JUPITER/SATURN ANALOG
KW - DETERMINISTIC MODEL
KW - LUMINOSITY-RELATION
KW - MILKY-WAY
KW - SYSTEMS
KW - STARS
KW - EVENTS
KW - PHOTOMETRY
U2 - 10.3847/1538-3881/ab9ac3
DO - 10.3847/1538-3881/ab9ac3
M3 - Journal article
VL - 160
JO - The Astronomical Journal
JF - The Astronomical Journal
SN - 0004-6256
IS - 2
M1 - 74
ER -
ID: 251357754