OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk

Yuki Hirao; David P. Bennett; Yoon-Hyun Ryu; Naoki Koshimoto; Andrzej Udalski; Jennifer C. Yee; Takahiro Sumi; Ian A. Bond; Yossi Shvartzvald; Fumio Abe; Richard K. Barry; Aparna Bhattacharya; Martin Donachie; Akihiko Fukui; Yoshitaka Itow; Iona Kondo; Man Cheung Alex Li; Yutaka Matsubara; Taro Matsuo; Shota Miyazaki; Yasushi Muraki; Masayuki Nagakane; Clement Ranc; Nicholas J. Rattenbury; Haruno Suematsu; Hiroshi Shibai; Daisuke Suzuki; Paul J. Tristram; Atsunori Yonehara; J. Skowron; R. Poleski; P. Mroz; M. K. Szymanski; I. Soszynski; S. Kozlowski; P. Pietrukowicz; K. Ulaczyk; K. Rybicki; P. Iwanek; Michael D. Albrow; Sun-Ju Chung; Andrew Gould; Cheongho Han; Kyu-Ha Hwang; Youn Kil Jung; In-Gu Shin; Markus Hundertmark; U. G. Jorgensen; J. Skottfelt; Y. I. Fujii; MOA Collaboration; OGLE Collaboration; KMTNet Collaboration; Spitzer Team; LCO Fun Follow-up Teams; MiNDSTEp Collaboration; IRSF Team

doi:10.3847/1538-3881/ab9ac3

OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk

Yuki Hirao^*, David P. Bennett, Yoon-Hyun Ryu, Naoki Koshimoto, Andrzej Udalski, Jennifer C. Yee, Takahiro Sumi, Ian A. Bond, Yossi Shvartzvald, Fumio Abe, Richard K. Barry, Aparna Bhattacharya, Martin Donachie, Akihiko Fukui, Yoshitaka Itow, Iona Kondo, Man Cheung Alex Li, Yutaka Matsubara, Taro Matsuo, Shota MiyazakiYasushi Muraki, Masayuki Nagakane, Clement Ranc, Nicholas J. Rattenbury, Haruno Suematsu, Hiroshi Shibai, Daisuke Suzuki, Paul J. Tristram, Atsunori Yonehara, J. Skowron, R. Poleski, P. Mroz, M. K. Szymanski, I. Soszynski, S. Kozlowski, P. Pietrukowicz, K. Ulaczyk, K. Rybicki, P. Iwanek, Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Cheongho Han, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Markus Hundertmark, U. G. Jorgensen, J. Skottfelt, Y. I. Fujii, MOA Collaboration, OGLE Collaboration, KMTNet Collaboration, Spitzer Team, LCO Fun Follow-up Teams, MiNDSTEp Collaboration, IRSF Team

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

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Abstract

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.

Originalsprog	Engelsk
Artikelnummer	74
Tidsskrift	Astronomical Journal
Vol/bind	160
Udgave nummer	2
Antal sider	20
ISSN	0004-6256
DOI	https://doi.org/10.3847/1538-3881/ab9ac3
Status	Udgivet - 1 aug. 2020

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10.3847/1538-3881/ab9ac3

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Citationsformater

Hirao, Y., Bennett, D. P., Ryu, Y.-H., Koshimoto, N., Udalski, A., Yee, J. C., Sumi, T., Bond, I. A., Shvartzvald, Y., Abe, F., Barry, R. K., Bhattacharya, A., Donachie, M., Fukui, A., Itow, Y., Kondo, I., Li, M. C. A., Matsubara, Y., Matsuo, T., ... IRSF Team (2020). OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk. Astronomical Journal, 160(2), Artikel 74. https://doi.org/10.3847/1538-3881/ab9ac3

Hirao, Y, Bennett, DP, Ryu, Y-H, Koshimoto, N, Udalski, A, Yee, JC, Sumi, T, Bond, IA, Shvartzvald, Y, Abe, F, Barry, RK, Bhattacharya, A, Donachie, M, Fukui, A, Itow, Y, Kondo, I, Li, MCA, Matsubara, Y, Matsuo, T, Miyazaki, S, Muraki, Y, Nagakane, M, Ranc, C, Rattenbury, NJ, Suematsu, H, Shibai, H, Suzuki, D, Tristram, PJ, Yonehara, A, Skowron, J, Poleski, R, Mroz, P, Szymanski, MK, Soszynski, I, Kozlowski, S, Pietrukowicz, P, Ulaczyk, K, Rybicki, K, Iwanek, P, Albrow, MD, Chung, S-J, Gould, A, Han, C, Hwang, K-H, Jung, YK, Shin, I-G, Hundertmark, M, Jorgensen, UG, Skottfelt, J, Fujii, YI, MOA Collaboration, OGLE Collaboration, KMTNet Collaboration, Spitzer Team, LCO Fun Follow-up Teams, MiNDSTEp Collaboration & IRSF Team 2020, 'OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk', Astronomical Journal, bind 160, nr. 2, 74. https://doi.org/10.3847/1538-3881/ab9ac3

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title = "OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk",

abstract = "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.",

keywords = "GRAVITATIONAL LENSING EXPERIMENT, INTERSTELLAR EXTINCTION LAW, JUPITER/SATURN ANALOG, DETERMINISTIC MODEL, LUMINOSITY-RELATION, MILKY-WAY, SYSTEMS, STARS, EVENTS, PHOTOMETRY",

author = "Yuki Hirao and Bennett, {David P.} and Yoon-Hyun Ryu and Naoki Koshimoto and Andrzej Udalski and Yee, {Jennifer C.} and Takahiro Sumi and Bond, {Ian A.} and Yossi Shvartzvald and Fumio Abe and Barry, {Richard K.} and Aparna Bhattacharya and Martin Donachie and Akihiko Fukui and Yoshitaka Itow and Iona Kondo and Li, {Man Cheung Alex} and Yutaka Matsubara and Taro Matsuo and Shota Miyazaki and Yasushi Muraki and Masayuki Nagakane and Clement Ranc and Rattenbury, {Nicholas J.} and Haruno Suematsu and Hiroshi Shibai and Daisuke Suzuki and Tristram, {Paul J.} and Atsunori Yonehara and J. Skowron and R. Poleski and P. Mroz and Szymanski, {M. K.} and I. Soszynski and S. Kozlowski and P. Pietrukowicz and K. Ulaczyk and K. Rybicki and P. Iwanek and Albrow, {Michael D.} and Sun-Ju Chung and Andrew Gould and Cheongho Han and Kyu-Ha Hwang and Jung, {Youn Kil} and In-Gu Shin and Markus Hundertmark and Jorgensen, {U. G.} and J. Skottfelt and Fujii, {Y. I.} and {MOA Collaboration} and {OGLE Collaboration} and {KMTNet Collaboration} and {Spitzer Team} and {LCO Fun Follow-up Teams} and {MiNDSTEp Collaboration} and {IRSF Team}",

year = "2020",

month = aug,

day = "1",

doi = "10.3847/1538-3881/ab9ac3",

language = "English",

volume = "160",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "Institute of Physics Publishing, Inc",

number = "2",

}

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

SN - 0004-6256

VL - 160

JO - Astronomical Journal

JF - Astronomical Journal

IS - 2

M1 - 74

ER -