A sub-Saturn mass planet, MOA-2009-BLG-319Lb

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., Yock, P. C. M., Bolt, G., Bos, M., Christie, G. W., DePoy, D. L., Drummond, J., Gal-Yam, A., Gaudi, B. S., Gorbikov, E., Higgins, D., Hwang, K. -H., Janczak, J., Kaspi, S., Lee, C. -U., Koo, J. -R., Kozlowski, S., Lee, Y., Mallia, F., Maury, A., Maoz, D., McCormick, J., Monard, L. A. G., Moorhouse, D., Munoz, J. A., Natusch, T., Ofek, E. O., Pogge, R. W., Polishook, D., Santallo, R., Shporer, A., Spector, O., Thornley, G., Allan, A., Bramich, D. M., Horne, K., Kains, N., Steele, I., Bozza, V., Burgdorf, M. J., Novati, S. Calchi, Dominik, M., Dreizler, S., Glitrup, M., Hessman, F. V., Hinse, T. C., Jorgensen, U. G., Liebig, C., Maier, G., Mathiasen, M., Rahvar, S., Ricci, D., Scarpetta, G., Skottfelt, J., Southworth, J., Surdej, J., Wambsganss, J., Zimmer, F., Batista, V., Beaulieu, J. P., Brillant, S., Cassan, A., Cole, A., Corrales, E., Coutures, Ch., Dieters, S., Greenhill, J., Kubas, D. and Menzies, J. (2011) A sub-Saturn mass planet, MOA-2009-BLG-319Lb. Astrophysical Journal, 728 2: 1-10. doi:10.1088/0004-637X/728/2/120

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Author 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.
Yock, P. C. M.
Bolt, G.
Bos, M.
Christie, G. W.
DePoy, D. L.
Drummond, J.
Gal-Yam, A.
Gaudi, B. S.
Gorbikov, E.
Higgins, D.
Hwang, K. -H.
Janczak, J.
Kaspi, S.
Lee, C. -U.
Koo, J. -R.
Kozlowski, S.
Lee, Y.
Mallia, F.
Maury, A.
Maoz, D.
McCormick, J.
Monard, L. A. G.
Moorhouse, D.
Munoz, J. A.
Natusch, T.
Ofek, E. O.
Pogge, R. W.
Polishook, D.
Santallo, R.
Shporer, A.
Spector, O.
Thornley, G.
Allan, A.
Bramich, D. M.
Horne, K.
Kains, N.
Steele, I.
Bozza, V.
Burgdorf, M. J.
Novati, S. Calchi
Dominik, M.
Dreizler, S.
Glitrup, M.
Hessman, F. V.
Hinse, T. C.
Jorgensen, U. G.
Liebig, C.
Maier, G.
Mathiasen, M.
Rahvar, S.
Ricci, D.
Scarpetta, G.
Skottfelt, J.
Southworth, J.
Surdej, J.
Wambsganss, J.
Zimmer, F.
Batista, V.
Beaulieu, J. P.
Brillant, S.
Cassan, A.
Cole, A.
Corrales, E.
Coutures, Ch.
Dieters, S.
Greenhill, J.
Kubas, D.
Menzies, J.
Title A sub-Saturn mass planet, MOA-2009-BLG-319Lb
Journal name Astrophysical Journal   Check publisher's open access policy
ISSN 0004-637X
Publication date 2011-02-20
Sub-type Article (original research)
DOI 10.1088/0004-637X/728/2/120
Open Access Status File (Publisher version)
Volume 728
Issue 2
Start page 1
End page 10
Total pages 10
Place of publication Philadelphia, PA, United States
Publisher Institute of Physics Publishing
Language eng
Formatted abstract
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) × 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, tE, and angular Einstein radius, θE, along with a standard Galactic model indicates a host star mass of ML = 0.38+0.34–0.18 M and a planet mass of Mp = 50+44–24 M, which is half the mass of Saturn. This analysis also yields a planet-star three-dimensional separation of a = 2.4+1.2–0.6 AU and a distance to the planetary system of DL = 6.1+1.1–1.2 kpc. This separation is ~2 times the distance of the snow line, a separation similar to most of the other planets discovered by microlensing.
Keyword Gravitational lensing: micro
Planetary systems
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 20 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 10 times in Scopus Article | Citations
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