Spitzer parallax of OGLE-2015-BLG-0966 : a cold Neptune in the Galactic disk
Rachel Street,Andrzej Udalski,S. Calchi Novati,S. Calchi Novati,M. Hundertmark,Wei Zhu,Andrew Gould,Jennifer C. Yee,Yiannis Tsapras,David P. Bennett,U. G. Jørgensen,Martin Dominik,Michael I. Andersen,Etienne Bachelet,Etienne Bachelet,Valerio Bozza,Valerio Bozza,D. M. Bramich,Martin Burgdorf,Arnaud Cassan,Simona Ciceri,Giuseppe D'Ago,Subo Dong,Daniel F. Evans,Shenghong Gu,H. Harkonnen,Tobias C. Hinse,Keith Horne,R. Figuera Jaimes,R. Figuera Jaimes,N. Kains,Eamonn Kerins,Heidi Korhonen,M. Kuffmeier,Luigi Mancini,J. W. Menzies,Shude Mao,Nuno Peixinho,A. Popovas,Markus Rabus,Markus Rabus,Sohrab Rahvar,Clément Ranc,R. Tronsgaard Rasmussen,Gaetano Scarpetta,R. W. Schmidt,Jesper Skottfelt,Colin Snodgrass,John Southworth,Iain A. Steele,Jean Surdej,Eduardo Unda-Sanzana,P. Verma,C. von Essen,Joachim Wambsganss,Yi-Bo Wang,Olivier Wertz,Radek Poleski,Radek Poleski,M. Pawlak,Michał K. Szymański,Jan Skowron,P. Mróz,Szymon Kozłowski,Łukasz Wyrzykowski,Paweł Pietrukowicz,Grzegorz Pietrzyński,Igor Soszyński,Krzysztof Ulaczyk,C. A. Beichman,G. Bryden,Sean Carey,B. S. Gaudi,Calen B. Henderson,Calen B. Henderson,Richard W. Pogge,Yossi Shvartzvald,Fumio Abe,Yuichiro Asakura,Aparna Bhattacharya,Ian A. Bond,Martin Donachie,M. Freeman,Akihiko Fukui,Yuki Hirao,K. Inayama,Yoshitaka Itow,Naoki Koshimoto,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,Masayuki Nagakane,T. Nishioka,Kouji Ohnishi,H. Oyokawa,Nicholas J. Rattenbury,To. Saito,A. Sharan,Denis J. Sullivan,Takahiro Sumi,Daisuke Suzuki,J. Tristram,Y. Wakiyama,Atsunori Yonehara,C. Han,J-Y. Choi,H. Park,Y. K. Jung,I.-G. Shin +110 more
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TLDR
In this paper, the authors reported the detection of a cold Neptune mplanet = 21 ± 2 M⊕ orbiting a 0.38 m⊙ M dwarf lying 2.5-3.3 kpc toward the Galactic center as part of a campaign combining ground-based and Spitzer observations.Abstract:
We report the detection of a cold Neptune mplanet = 21 ± 2 M⊕ orbiting a 0.38 M⊙ M dwarf lying 2.5–3.3 kpc toward the Galactic center as part of a campaign combining ground-based and Spitzer observations to measure the Galactic distribution of planets. This is the first time that the complex real-time protocols described by Yee et al., which aim to maximize planet sensitivity while maintaining sample integrity, have been carried out in practice. Multiple survey and follow up teams successfully combined their efforts within the framework of these protocols to detect this planet. This is the second planet in the Spitzer Galactic distribution sample. Both are in the near to mid-disk and are clearly not in the Galactic bulge.read more
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The exoplanet mass-ratio function from the moa-ii survey: discovery of a break and likely peak at a neptune mass
Daisuke Suzuki,David P. Bennett,David P. Bennett,Takahiro Sumi,Ian A. Bond,Leslie A. Rogers,Fumio Abe,Yuichiro Asakura,Aparna Bhattacharya,Aparna Bhattacharya,Martin Donachie,M. Freeman,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,Naoki Koshimoto,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,Masayuki Nagakane,K. Onishi,H. Oyokawa,Nicholas J. Rattenbury,To. Saito,A. Sharan,Hiroshi Shibai,Denis J. Sullivan,Paul J. Tristram,Atsunori Yonehara +30 more
TL;DR: In this article, the authors report the results of the statistical analysis of planetary signals discovered in MOA-II microlensing survey alert system events from 2007 to 2012, and determine the survey sensitivity as a function of planet star mass ratio, q, and projected planet star separation, s, in Einstein radius units.
Journal ArticleDOI
An Earth-mass Planet in a 1 au Orbit around an Ultracool Dwarf
Yossi Shvartzvald,Jennifer C. Yee,S. Calchi Novati,S. Calchi Novati,Andrew Gould,Andrew Gould,Andrew Gould,C.-U. Lee,C.-U. Lee,C. A. Beichman,G. Bryden,Sean Carey,B. S. Gaudi,Calen B. Henderson,Wei Zhu,Spitzer Team,Michael D. Albrow,Sang-Mok Cha,Sang-Mok Cha,S. J. Chung,S. J. Chung,C. Han,Kyu-Ha Hwang,Y. K. Jung,D.-J. Kim,Hyoun-Woo Kim,Shinyoung Kim,Shinyoung Kim,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Richard W. Pogge,Yoon-Hyun Ryu,I.-G. Shin +34 more
TL;DR: The OGLE-2016-BLG-1195Lb is the smallest known Earth-mass microlensing planet to date as mentioned in this paper at 3.91^(+0.42)_(-0.46) kpc.
Journal ArticleDOI
Toward a Galactic Distribution of Planets. I. Methodology & Planet Sensitivities of the 2015 High-Cadence Spitzer Microlens Sample
Wei Zhu,Andrzej Udalski,S. Calchi Novati,Sun-Ju Chung,Y. K. Jung,Yoon-Hyun Ryu,In-Gu Shin,Andrew Gould,C.-U. Lee,Michael D. Albrow,Jennifer C. Yee,C. Han,K.-H. Hwang,Sang-Mok Cha,Dong-Jin Kim,H.-W. Kim,Shinyoung Kim,Yun Hak Kim,Yongseok Lee,Byeong-Gon Park,R. W. Pogge,R. Poleski,Jan Skowron,P. Mróz,Michał K. Szymański,Igor Soszyński,P. Pietrukowicz,S. Kozlowski,K. Ulaczyk,Michał Pawlak,C. A. Beichman,G. Bryden,Sean Carey,Michael Fausnaugh,B. S. Gaudi,Chuck Henderson,Yossi Shvartzvald,B. Wibking +37 more
TL;DR: In this article, an ensemble of microlensing events from the 2015 Spitzer micro-lensing campaign, all of which were densely monitored by ground-based high-cadence survey teams, were analyzed and the planet sensitivities of all 41 events in the sample were calculated, from which compact constraints on the microlens properties were derived, including the uncertainties on the lens mass and distance.
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Macho Parallaxes From A Single Satellite
TL;DR: In this paper, the velocity difference between the satellite and the Earth allows one to partially or totally break the degeneracy using a single satellite, which is the best tool for extracting additional information.
Journal ArticleDOI
Toward a Galactic Distribution of Planets. I. Methodology and Planet Sensitivities of the 2015 High-cadence Spitzer Microlens Sample
TL;DR: In this article, the authors analyzed an ensemble of microlensing events from the 2015 Spitzer micro-lensing campaign, all of which were densely monitored by ground-based high-cadence survey teams.
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