OGLE-2018-BLG-1428Lb: a Jupiter-mass planet beyond the snow line of a dwarf star
OGLE-2018-BLG-1428Lb: a Jupiter-mass planet beyond the snow line of a dwarf star
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OGLE-2018-BLG-1428Lb：一颗位于矮星雪线之外的木星质量行星
DOI：
10.1093/mnras/stab534
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发表时间：
2021
影响因子：
4.8
通讯作者：
S. Chung
中科院分区：
文献类型：
--
作者：
Yun;S. Chung;A. Udalski;A. Gould;M. Albrow;Y. Jung;K. Hwang;C. Han;Y. Ryu;I. Shin;Y. Shvartzvald;J. Yee;W. Zang;S. Cha;Dong;Hyoun;Seung;Chung;Dong;Yongseok Lee;Byeong;R. Pogge;P. Mróz;R. Poleski;M. Wrona;P. Iwanek;M. Szymański;J. Skowron;I. Soszyński;S. Kozłowski;P. Pietrukowicz;K. Ulaczyk;K. Rybicki;Y. H. Kim;S. Chung
We present the analysis of the microlensing event OGLE-2018-BLG-1428, which has a short-duration (∼1 d) caustic-crossing anomaly. The event was caused by a planetary lens system with planet/host mass ratio q = 1.7 × 10−3. Because of the detection of the caustic-crossing anomaly, the finite source effect was well measured, but the microlens parallax was not constrained due to the relatively short time-scale (tE = 24 d). From a Bayesian analysis, we find that the host star is a dwarf star $M_{\rm host}=0.43^{+0.33}_{-0.22} \ \mathrm{M}_{\odot }$ at a distance $D_{\rm L}=6.22^{+1.03}_{-1.51}\ {\rm kpc}$ and the planet is a Jovian-mass planet $M_{\rm p}=0.77^{+0.77}_{-0.53} \ M_{\rm J}$ with a projected separation $a_{\perp }=3.30^{+0.59}_{-0.83}\ {\rm au}$. The planet orbits beyond the snow line of the host star. Considering the relative lens-source proper motion of $\mu _{\rm rel} = 5.58 \pm 0.38\ \rm mas\ yr^{-1}$, the lens can be resolved by adaptive optics with a 30 m telescope in the future.
We present the analysis of the microlensing event OGLE-2018-BLG-1428, which has a short-duration (∼1 d) caustic-crossing anomaly. The event was caused by a planetary lens system with planet/host mass ratio q = 1.7 × 10−3. Because of the detection of the caustic-crossing anomaly, the finite source effect was well measured, but the microlens parallax was not constrained due to the relatively short time-scale (tE = 24 d). From a Bayesian analysis, we find that the host star is a dwarf star $M_{\rm host}=0.43^{+0.33}_{-0.22} \ \mathrm{M}_{\odot }$ at a distance $D_{\rm L}=6.22^{+1.03}_{-1.51}\ {\rm kpc}$ and the planet is a Jovian-mass planet $M_{\rm p}=0.77^{+0.77}_{-0.53} \ M_{\rm J}$ with a projected separation $a_{\perp }=3.30^{+0.59}_{-0.83}\ {\rm au}$. The planet orbits beyond the snow line of the host star. Considering the relative lens-source proper motion of $\mu _{\rm rel} = 5.58 \pm 0.38\ \rm mas\ yr^{-1}$, the lens can be resolved by adaptive optics with a 30 m telescope in the future.
DOI：
10.1111/j.1365-2966.2009.15098.x
发表时间：
2009-05
影响因子：
4.8
作者：
M. Albrow;K. Horne;D. Bramich;P. Fouqué;V. R. Miller;J. Beaulieu;C. Coutures;C. Coutures;J. Menzies;A. Williams;V. Batista;D. Bennett;S. Brillant;A. Cassan;S. Dieters;D. Prester;J. Donatowicz;J. Greenhill;N. Kains;S. Kane;D. Kubas;J. Marquette;K. Pollard;K. Sahu;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub
通讯作者：
M. Albrow;K. Horne;D. Bramich;P. Fouqué;V. R. Miller;J. Beaulieu;C. Coutures;C. Coutures;J. Menzies;A. Williams;V. Batista;D. Bennett;S. Brillant;A. Cassan;S. Dieters;D. Prester;J. Donatowicz;J. Greenhill;N. Kains;S. Kane;D. Kubas;J. Marquette;K. Pollard;K. Sahu;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub
OGLE-2012-BLG-0563Lb：一颗围绕 M 矮星的土星质量行星，其质量受到 SUBARU AO 成像的限制
DOI：
10.1088/0004-637x/809/1/74
发表时间：
2015
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Fukui A
通讯作者：
Fukui A
MOA-2007-BLG-400 凯克自适应光学成像揭示了一颗绕银河核核 K 矮星运行的超级木星质量行星
DOI：
10.3847/1538-3881/abfec5
发表时间：
2021
期刊：
The Astronomical Journal
影响因子：
--
作者：
Bhattacharya, Aparna;Bennett, David P.;Beaulieu, Jean Philippe;Bond, Ian A.;Koshimoto, Naoki;Lu, Jessica R.;Blackman, Joshua W.;Vandorou, Aikaterini;Terry, Sean K.;Batista, Virginie
通讯作者：
Batista, Virginie