J
J. Tristram
Publications - 10
Citations - 428
J. Tristram is an academic researcher. The author has contributed to research in topics: Gravitational microlensing & Light curve. The author has an hindex of 7, co-authored 9 publications receiving 422 citations.
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Journal ArticleDOI
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
TL;DR: 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.
Journal ArticleDOI
The Microlensing Event Rate and Optical Depth Toward the Galactic Bulge from MOA-II
Takahiro Sumi,David P. Bennett,Ian A. Bond,Fumio Abe,C. S. Botzler,Akihiko Fukui,K. Furusawa,Yoshitaka Itow,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Y. Muraki,K. Ohnishi,Nicholas J. Rattenbury,To. Saito,Denis J. Sullivan,Daisuke Suzuki,Winston L. Sweatman,J. Tristram,K. Wada,Philip Yock +20 more
TL;DR: In this article, the authors present measurements of the microlensing optical depth and event rate toward the central galactic bulge based on two years of the MOA-II survey and find that the event rate is maximized at low latitudes and a longitude of $l~1 degree.
Journal ArticleDOI
Spitzer Parallax of OGLE-2015-BLG-0966: A Cold Neptune in the Galactic Disk
Rachel Street,Andrzej Udalski,S. Calchi Novati,M. Hundertmark,Wei Zhu,Andrew Gould,Jennifer C. Yee,Yiannis Tsapras,David P. Bennett,RoboNet,U. G. Jørgensen,Martin Dominik,Michael I. Andersen,Etienne Bachelet,Valerio Bozza,D. M. Bramich,Martin Burgdorf,Arnaud Cassan,Simona Ciceri,Giuseppe D'Ago,Subo Dong,D. F. Evans,Shenghong Gu,H. Harkonnen,Tobias C. Hinse,Keith Horne,R. Figuera Jaimes,N. Kains,Eamonn Kerins,Heidi Korhonen,M. Kuffmeier,Luigi Mancini,J. W. Menzies,Shude Mao,Nuno Peixinho,A. Popovas,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,Ogle,R. Poleski,M. Pawlak,Michał K. Szymański,Jan Skowron,P. Mróz,Szymon Kozłowski,L. Wyrzykowski,Paweł Pietrukowicz,Grzegorz Pietrzyński,Igor Soszyński,Krzysztof Ulaczyk,Spitzer Team C. Beichman,G. Bryden,Sean Carey,B. S. Gaudi,Calen B. Henderson,Richard W. Pogge,Yossi Shvartzvald,Fumio Abe,Yuichiro Asakura,A. Bhattacharya,Ian A. Bond,M. Donachie,M. Freeman,Akihiko Fukui,Y. Hirao,K. Inayama,Yoshitaka Itow,Naoki Koshimoto,M. C. A. Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,M. Nagakane,Tsubasa 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,KMTNet Modeling Team C. Han,H. Park,Y. K. Jung,I.-G. Shin +104 more
TL;DR: In this article, the detection of a Cold Neptune m_planet=21+/-2M orbiting a 0.38MSol M dwarf lying 2.5-3.3 kpc toward the Galactic center as part of a campaign combining ground-based and Spitzer observations was reported.
Journal ArticleDOI
The First Neptune Analog or Super-Earth with Neptune-like Orbit: MOA-2013-BLG-605Lb
Takahiro Sumi,Andrzej Udalski,David P. Bennett,Andrew Gould,R. Poleski,Ian A. Bond,N. J. Rattenbury,R. W. Pogge,Thomas Bensby,J. P. Beaulieu,J. B. Marquette,V. Batista,Stephane Brillant,Fumio Abe,Yuichiro Asakura,A. Bhattacharya,M. Donachie,M. Freeman,A. Fukui,Y. Hirao,Yoshitaka Itow,N. Koshimoto,M. C. A. Li,C. H. Ling,Kimiaki Masuda,Yuhei Matsubara,Y. Muraki,M. Nagakane,K. Ohnishi,H. Oyokawa,To. Saito,A. Sharan,Denis J. Sullivan,Daisuke Suzuki,J. Tristram,Atsunori Yonehara,Michał K. Szymański,K. Ulaczyk,S. Kozlowski,L. Wyrzykowski,M. Kubiak,P. Pietrukowicz,Grzegorz Pietrzyński,Igor Soszyński,C. Han,Y. K. Jung,In-Gu Shin,C.-U. Lee +47 more
TL;DR: In this paper, the authors presented the discovery of the first Neptune analog exoplanet or super-Earth with Neptune-like orbit, MOA-2013-BLG-605Lb.
Journal ArticleDOI
A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray Luminous Classical Nova to Date
Thomas Finzell,Laura Chomiuk,Brian D. Metzger,Frederick M. Walter,Justin D. Linford,Koji Mukai,T. J. N. Nelson,Jennifer Weston,Yong Zheng,Jennifer L. Sokoloski,Amy J. Mioduszewski,Michael P. Rupen,Subo Dong,Sumner Starrfield,C. C. Cheung,Terry Bohlsen,Charles E. Woodward,G. B. Taylor,C. Buil,J. L. Prieto,R. Mark Wagner,Thomas Bensby,Ian A. Bond,Takahiro Sumi,David P. Bennett,Fumio Abe,Naoki Koshimoto,Daisuke Suzuki,J. Tristram,G. W. Christie,Tim Natusch,Jennie McCormick,Jennifer C. Yee,Andrew Gould +33 more
TL;DR: The most gamma-ray luminous classical nova to date, V1324 Sco as discussed by the authors, is a Fe-II type nova, with a maximum ejecta velocity of 2600 km s$−1−1 and an ejecta mass of few times 10−5−5 m−1