Academic Journal
A Sub-Saturn Mass Planet, MOA-2009-BLG-319Lb
| العنوان: | A Sub-Saturn Mass Planet, MOA-2009-BLG-319Lb |
|---|---|
| المؤلفون: | Miyake, N., Sumi, T., Dong, Subo, Street, R., Mancini, L., Gould, A., Bennett, D. P., Tsapras, Y., Yee, J. C., Albrow, M. D., Bond, I. A., Fouque, P., Browne, P., Han, C., Snodgrass, C., Finet, F., Furusawa, K., Harpsoe, K., Allen, W., Hundertmark, M., Freeman, M., Suzuki, D., Abe, F., Botzler, C. S., Douchin, D., Fukui, A., Hayashi, F., Hearnshaw, J. B., Hosaka, S., Itow, Y., Kamiya, K., Kilmartin, P. M., Korpela, A., Lin, W., Ling, C. H., Makita, S., Masuda, K., Matsubara, Y., Muraki, Y., Nagayama, T., Nishimoto, K., Ohnishi, K., Perrott, Y. C., Rattenbury, N., Saito, To., Skuljan, L., Sullivan, D. J., Sweatman, W. L., Tristram, P. J., Wada, K. |
| المصدر: | Miyake , N , Sumi , T , Dong , S , Street , R , Mancini , L , Gould , A , Bennett , D P , Tsapras , Y , Yee , J C , Albrow , M D , Bond , I A , Fouque , P , Browne , P , Han , C , Snodgrass , C , Finet , F , Furusawa , K , Harpsoe , K , Allen , W , Hundertmark , M , Freeman , M , Suzuki , D , Abe , F , Botzler , C .... |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | gravitational lensing: micro, planetary systems, DIFFERENCE IMAGE-ANALYSIS, MAGNIFICATION MICROLENSING EVENTS, CLUMP ABSOLUTE MAGNITUDE, GALACTIC BULGE, SNOW LINE, JUPITER/SATURN ANALOG, EXTRASOLAR PLANETS, OPTICAL DEPTH, GIANT PLANETS, PARALLAX |
| الوصف: | We report the gravitational microlensing discovery of a sub-Saturn mass planet, MOA-2009-BLG-319Lb, orbiting a K-or M-dwarf star in the inner Galactic disk or Galactic bulge. The high-cadence observations of the MOA-II survey discovered this microlensing event and enabled its identification as a high-magnification event approximately 24 hr prior to peak magnification. As a result, the planetary signal at the peak of this light curve was observed by 20 different telescopes, which is the largest number of telescopes to contribute to a planetary discovery to date. The microlensing model for this event indicates a planet-star mass ratio of q = (3.95 +/- 0.02) x 10(-4) and a separation of d = 0.97537 +/- 0.00007 in units of the Einstein radius. A Bayesian analysis based on the measured Einstein radius crossing time, t(E), and angular Einstein radius,theta(E), along with a standard Galactic model indicates a host star mass of M-L = 0.38(-0.18)(+0.34) M-circle dot and a planet mass of M-p = 50(-24)(+44)M(circle plus), which is half the mass of Saturn. This analysis also yields a planet-star three-dimensional separation of a = 2.4(-0.6)(+1.2) AU and a distance to the planetary system of D-L = 6.1(-1.2)(+1.1) kpc. This separation is similar to 2 times the distance of the snow line, a separation similar to most of the other planets discovered by microlensing. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1088/0004-637X/728/2/120 |
| الاتاحة: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/a-subsaturn-mass-planet-moa2009blg319lb(cae0ef89-f9ce-40f6-88d0-959204a4b28e).html https://doi.org/10.1088/0004-637X/728/2/120 |
| Rights: | info:eu-repo/semantics/restrictedAccess |
| رقم الانضمام: | edsbas.EE9DF724 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/0004-637X/728/2/120 |
|---|