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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
A Cold neptune-mass planet OGLE-2007-BLG-368Lb: Cold neptunes are common
Astrophysical Journal, Volume 710, No. 2, Year 2010
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Description
We present the discovery of a Neptune-mass planet OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 2.1] × 10-5 via gravitational microlensing. The planetary deviation was detected in real-time thanks to the high cadence of the Microlensing Observations in Astrophysics survey, real-time light-curve monitoring and intensive follow-up observations. A Bayesian analysis returns the stellar mass and distance at Ml = 0.64+0.21-0.26 M· and Dl = 5.9 +0.9-1.4 kpc, respectively, so the mass and separation of the planet are Mp = 20+7-8 M ⊕ and a = 3.3+1.4-0.8AU, respectively. This discovery adds another cold Neptune-mass planet to the planetary sample discovered by microlensing, which now comprises four cold Neptune/super-Earths, five gas giant planets, and another sub-Saturn mass planet whose nature is unclear. The discovery of these 10 cold exoplanets by the microlensing method implies that the mass ratio function of cold exoplanets scales as dN pl/dlog qαq -0.70.2 with a 95% confidence level upper limit of n < -0.35 (where dN pl/dlog qαqn ). As microlensing is most sensitive to planets beyond the snow-line, this implies that Neptune-mass planets are at least three times more common than Jupiters in this region at the 95% confidence level. © 2010. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Sumi, Takahiro
Unknown Affiliation
Bennett, David P.
Unknown Affiliation
Bond, Ian A.
Unknown Affiliation
Udalski, Andrzej
Unknown Affiliation
Batista, Virginie
Unknown Affiliation
Dominik, Martin
Unknown Affiliation
Fouqué, Pascal
Unknown Affiliation
Kubas, Daniel
Unknown Affiliation
Gould, Andrew P.
Unknown Affiliation
MacIntosh, B.
Unknown Affiliation
Cook, Kem H.
Unknown Affiliation
Dong, Subo
Unknown Affiliation
Skuljan, Ljiljana
Unknown Affiliation
Cassan, Arnaud
Unknown Affiliation
Abe, Fumio
Unknown Affiliation
Botzler, Christine S.
Unknown Affiliation
Fukui, Akihiko
Unknown Affiliation
Furusawa, Kei
Unknown Affiliation
Hearnshaw, John B.
Unknown Affiliation
Itow, Yoshitaka
Unknown Affiliation
Kamiya, Koki
Unknown Affiliation
Kilmartin, Pamela M.
Unknown Affiliation
Korpela, Aarno V.
Unknown Affiliation
Lin, Wei
Unknown Affiliation
Ling, Chohong
Unknown Affiliation
Masuda, Kimiaki
Unknown Affiliation
Matsubara, Yutaka
Unknown Affiliation
Miyake, Noriyuki
Unknown Affiliation
Muraki, Y.
Unknown Affiliation
Nagaya, Maiko
Unknown Affiliation
Nagayama, Takahiro
Unknown Affiliation
Ohnishi, Kouji
Unknown Affiliation
Okumura, T.
Unknown Affiliation
Perrott, Yvette C.
Unknown Affiliation
Rattenbury, Nicholas James
Unknown Affiliation
Saito, To
Unknown Affiliation
Sako, Takashi
Unknown Affiliation
Sullivan, Denis J.
Unknown Affiliation
Sweatman, Winston L.
Unknown Affiliation
Tristram, Paul J.
Unknown Affiliation
Yock, C. M.
Unknown Affiliation
Beaulieu, Jean Philippe H.
Unknown Affiliation
Cole, Andrew A.
Unknown Affiliation
Coutures, Christian
Unknown Affiliation
Duran, M. F.
Unknown Affiliation
Greenhill, John G.
Unknown Affiliation
Jablonski, Francisco J.
Unknown Affiliation
Marboeuf, U.
Unknown Affiliation
Martioli, Eder
Unknown Affiliation
Pedretti, Ettore
Unknown Affiliation
Pejcha, O.
Unknown Affiliation
Rojo, Patricio M.
Unknown Affiliation
Albrow, Michael D.
Unknown Affiliation
Brillant, Stéphanie
Unknown Affiliation
Bode, Michael F.
Unknown Affiliation
Bramich, Daniel M.
Unknown Affiliation
Burgdorf, Martin J.
Unknown Affiliation
Caldwell, John A.R.
Unknown Affiliation
Calitz, H.
Unknown Affiliation
Corrales, E.
Unknown Affiliation
Dieters, Stefan W.B.
Unknown Affiliation
Prester, Dijana Dominis
Unknown Affiliation
Donatowicz, J.
Unknown Affiliation
Hill, Kym M.
Unknown Affiliation
Hoffman, Matie J.H.
Unknown Affiliation
Hörne, Keith D.
Unknown Affiliation
Jörgensen, Uffe Gråe
Unknown Affiliation
Kains, Noé
Unknown Affiliation
Kane, Stephen R.
Unknown Affiliation
Marquette, Jean Baptiste
Unknown Affiliation
Martin, Ralph
Unknown Affiliation
Meintjes, Pieter J.
Unknown Affiliation
Menzies, John W.
Unknown Affiliation
Pollard, Karen R.
Unknown Affiliation
Sahu, Kailash C.
Unknown Affiliation
Snodgrass, Colin
Unknown Affiliation
Steele, Iain A.
Unknown Affiliation
Street, Rachel A.
Unknown Affiliation
Tsapras, Yiannis
Unknown Affiliation
Wambsganss, Joachim
Unknown Affiliation
Williams, Andrew J.
Unknown Affiliation
Zub, Marta
Unknown Affiliation
Szymánski, Michał K.
Unknown Affiliation
Kubiak, Marcin
Unknown Affiliation
Pietrzýnski, Grzegorz
Unknown Affiliation
Soszyński, Igor
Unknown Affiliation
Szewczyk, Olaf
Unknown Affiliation
Wyrzykowski, Łukasz
Unknown Affiliation
Ulaczyk, Krzysztof
Unknown Affiliation
Allen, William H.
Unknown Affiliation
Christie, Grant W.
Unknown Affiliation
DePoy, Darren L.
Unknown Affiliation
Gaudi, B. Scott
Unknown Affiliation
Han, Cheongho
Unknown Affiliation
Janczak, Julia
Unknown Affiliation
Lee, Chung-uk
Unknown Affiliation
McCormick, Jennie M.
Unknown Affiliation
Mallia, Franco
Unknown Affiliation
Monard, Berto L.A.G.
Unknown Affiliation
Natusch, Timothy J.
Unknown Affiliation
Statistics
Citations: 181
Authors: 100
Affiliations: 48
Identifiers
Doi:
10.1088/0004-637X/710/2/1641
ISSN:
0004637X
e-ISSN:
15384357
Study Design
Cross Sectional Study
Cohort Study
Study Approach
Quantitative