A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251

N. Kains; R. A. Street; J.-Y. Choi; C. Han; A. Udalski; L. A. Almeida; F. Jablonski; P. J. Tristram; U. G. Jørgensen; M. K. Szymański; M. Kubiak; G. Pietrzyński; I. Soszyński; R. Poleski; S. Kozłowski; P. Pietrukowicz; K. Ulaczyk; Ł. Wyrzykowski; J. Skowron; K. A. Alsubai; V. Bozza; P. Browne; M. J. Burgdorf; S. Calchi Novati; P. Dodds; M. Dominik; S. Dreizler; X.-S. Fang; Frank Grundahl; C.-H. Gu; S. Hardis; Kennet Bomann West Harpsøe; F. V. Hessman; T. C. Hinse; A. Hornstrup; M. Hundertmark; Jens Jessen-Hansen; E. Kerins; C. Liebig; Mikkel Lund; Mia Lundkvist; L. Mancini; M. Mathiasen; M. T. Penny; S. Rahvar; D. Ricci; K. C. Sahu; G. Scarpetta; J. Skottfelt; C. Snodgrass; J. Southworth; J. Surdej; J. Tregloan-Reed; J. Wambsganss; O. Wertz; D. Bajek; D. M. Bramich; K. Horne; S. Ipatov; I. A. Steele; Y. Tsapras; F. Abe; D. P. Bennett; I. A. Bond; C. S. Botzler; P. Chote; M. Freeman; A. Fukui; K. Furusawa; Y. Itow; C. H. Ling; K. Masuda; Y. Matsubara; N. Miyake; Y. Muraki; K. Ohnishi; N. Rattenbury; T. Saito; D. J. Sullivan; T. Sumi; D. Suzuki; K. Suzuki; W. L. Sweatman; S. Takino; K. Wada; P. C. M. Yock; W. Allen; V. Batista; S.-J. Chung; G. Christie; D. L. DePoy; J. Drummond; B. S. Gaudi; A. Gould; C. Henderson; Y.-K. Jung; J.-R. Koo; C.-U. Lee; J. McCormick; D. McGregor; J. A. Muñoz; T. Natusch; H. Ngan; H. Park; R. W. Pogge; I.-G. Shin; J. Yee; M. D. Albrow; E. Bachelet; J.-P. Beaulieu; S. Brillant; J. A. R. Caldwell; A. Cassan; A. Cole; E. Corrales; Ch. Coutures; S. Dieters; D. Dominis Prester; J. Donatowicz; P. Fouqué; J. Greenhill; S. R. Kane; D. Kubas; J.-B. Marquette; R. Martin; P. Meintjes; J. Menzies; K. R. Pollard; A. Williams; D. Wouters; M. Zub

doi:10.1051/0004-6361/201220626

A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251

N. Kains, R. A. Street, J.-Y. Choi, C. Han, A. Udalski, L. A. Almeida, F. Jablonski, P. J. Tristram, U. G. Jørgensen, M. K. Szymański, M. Kubiak, G. Pietrzyński, I. Soszyński, R. Poleski, S. Kozłowski, P. Pietrukowicz, K. Ulaczyk, Ł. Wyrzykowski, J. Skowron, K. A. AlsubaiV. Bozza, P. Browne, M. J. Burgdorf, S. Calchi Novati, P. Dodds, M. Dominik, S. Dreizler, X.-S. Fang, Frank Grundahl, C.-H. Gu, S. Hardis, Kennet Bomann West Harpsøe, F. V. Hessman, T. C. Hinse, A. Hornstrup, M. Hundertmark, Jens Jessen-Hansen, E. Kerins, C. Liebig, Mikkel Lund, Mia Lundkvist, L. Mancini, M. Mathiasen, M. T. Penny, S. Rahvar, D. Ricci, K. C. Sahu, G. Scarpetta, J. Skottfelt, C. Snodgrass, J. Southworth, J. Surdej, J. Tregloan-Reed, J. Wambsganss, O. Wertz, D. Bajek, D. M. Bramich, K. Horne, S. Ipatov, I. A. Steele, Y. Tsapras, F. Abe, D. P. Bennett, I. A. Bond, C. S. Botzler, P. Chote, M. Freeman, A. Fukui, K. Furusawa, Y. Itow, C. H. Ling, K. Masuda, Y. Matsubara, N. Miyake, Y. Muraki, K. Ohnishi, N. Rattenbury, T. Saito, D. J. Sullivan, T. Sumi, D. Suzuki, K. Suzuki, W. L. Sweatman, S. Takino, K. Wada, P. C. M. Yock, W. Allen, V. Batista, S.-J. Chung, G. Christie, D. L. DePoy, J. Drummond, B. S. Gaudi, A. Gould, C. Henderson, Y.-K. Jung, J.-R. Koo, C.-U. Lee, J. McCormick, D. McGregor, J. A. Muñoz, T. Natusch, H. Ngan, H. Park, R. W. Pogge, I.-G. Shin, J. Yee, M. D. Albrow, E. Bachelet, J.-P. Beaulieu, S. Brillant, J. A. R. Caldwell, A. Cassan, A. Cole, E. Corrales, Ch. Coutures, S. Dieters, D. Dominis Prester, J. Donatowicz, P. Fouqué, J. Greenhill, S. R. Kane, D. Kubas, J.-B. Marquette, R. Martin, P. Meintjes, J. Menzies, K. R. Pollard, A. Williams, D. Wouters, M. Zub

Astrophysics and Planetary Science

28 Citations (Scopus)

Abstract

Aims. We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing observations towards the Galactic bulge. Methods. Based on detailed modelling of the observed light curve, we find that the lens is composed of two masses with a mass ratio q = 1.9 × 10^-3. Thanks to our detection of higher-order effects on the light curve due to the Earth's orbital motion and the finite size of source, we are able to measure the mass and distance to the lens unambiguously. Results. We find that the lens is made up of a planet of mass 0.53 ± 0.21 M _J orbiting an M dwarf host star with a mass of 0.26 ± 0.11 M_⊙. The planetary system is located at a distance of 2.57 ± 0.61 kpc towards the Galactic centre. The projected separation of the planet from its host star is d = 1.408 ± 0.019, in units of the Einstein radius, which corresponds to 2.72 ± 0.75 AU in physical units. We also identified a competitive model with similar planet and host star masses, but with a smaller orbital radius of 1.50 ± 0.50 AU. The planet is therefore located beyond the snow line of its host star, which we estimate to be around ~1-1.5 AU.

Original language	English
Article number	A70
Journal	Astronomy & Astrophysics
Volume	552
Number of pages	10
ISSN	0004-6361
DOIs	https://doi.org/10.1051/0004-6361/201220626
Publication status	Published - 2013

Access to Document

10.1051/0004-6361/201220626

http://dx.doi.org/10.1051/0004-6361/201220626

Cite this

Kains, N., Street, R. A., Choi, J-Y., Han, C., Udalski, A., Almeida, L. A., Jablonski, F., Tristram, P. J., Jørgensen, U. G., Szymański, M. K., Kubiak, M., Pietrzyński, G., Soszyński, I., Poleski, R., Kozłowski, S., Pietrukowicz, P., Ulaczyk, K., Wyrzykowski, Ł., Skowron, J., ... Zub, M. (2013). A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251. Astronomy & Astrophysics, 552, [A70]. https://doi.org/10.1051/0004-6361/201220626

Kains, N, Street, RA, Choi, J-Y, Han, C, Udalski, A, Almeida, LA, Jablonski, F, Tristram, PJ, Jørgensen, UG, Szymański, MK, Kubiak, M, Pietrzyński, G, Soszyński, I, Poleski, R, Kozłowski, S, Pietrukowicz, P, Ulaczyk, K, Wyrzykowski, Ł, Skowron, J, Alsubai, KA, Bozza, V, Browne, P, Burgdorf, MJ, Calchi Novati, S, Dodds, P, Dominik, M, Dreizler, S, Fang, X-S, Grundahl, F, Gu, C-H, Hardis, S, Harpsøe, KBW, Hessman, FV, Hinse, TC, Hornstrup, A, Hundertmark, M, Jessen-Hansen, J, Kerins, E, Liebig, C, Lund, M, Lundkvist, M, Mancini, L, Mathiasen, M, Penny, MT, Rahvar, S, Ricci, D, Sahu, KC, Scarpetta, G, Skottfelt, J, Snodgrass, C, Southworth, J, Surdej, J, Tregloan-Reed, J, Wambsganss, J, Wertz, O, Bajek, D, Bramich, DM, Horne, K, Ipatov, S, Steele, IA, Tsapras, Y, Abe, F, Bennett, DP, Bond, IA, Botzler, CS, Chote, P, Freeman, M, Fukui, A, Furusawa, K, Itow, Y, Ling, CH, Masuda, K, Matsubara, Y, Miyake, N, Muraki, Y, Ohnishi, K, Rattenbury, N, Saito, T, Sullivan, DJ, Sumi, T, Suzuki, D, Suzuki, K, Sweatman, WL, Takino, S, Wada, K, Yock, PCM, Allen, W, Batista, V, Chung, S-J, Christie, G, DePoy, DL, Drummond, J, Gaudi, BS, Gould, A, Henderson, C, Jung, Y-K, Koo, J-R, Lee, C-U, McCormick, J, McGregor, D, Muñoz, JA, Natusch, T, Ngan, H, Park, H, Pogge, RW, Shin, I-G, Yee, J, Albrow, MD, Bachelet, E, Beaulieu, J-P, Brillant, S, Caldwell, JAR, Cassan, A, Cole, A, Corrales, E, Coutures, C, Dieters, S, Dominis Prester, D, Donatowicz, J, Fouqué, P, Greenhill, J, Kane, SR, Kubas, D, Marquette, J-B, Martin, R, Meintjes, P, Menzies, J, Pollard, KR, Williams, A, Wouters, D & Zub, M 2013, 'A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251', Astronomy & Astrophysics, vol. 552, A70. https://doi.org/10.1051/0004-6361/201220626

@article{37663b98574f4f13b88d703828cea006,

title = "A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251",

abstract = "Aims. We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing observations towards the Galactic bulge. Methods. Based on detailed modelling of the observed light curve, we find that the lens is composed of two masses with a mass ratio q = 1.9 × 10-3. Thanks to our detection of higher-order effects on the light curve due to the Earth's orbital motion and the finite size of source, we are able to measure the mass and distance to the lens unambiguously. Results. We find that the lens is made up of a planet of mass 0.53 ± 0.21 M J orbiting an M dwarf host star with a mass of 0.26 ± 0.11 M⊙. The planetary system is located at a distance of 2.57 ± 0.61 kpc towards the Galactic centre. The projected separation of the planet from its host star is d = 1.408 ± 0.019, in units of the Einstein radius, which corresponds to 2.72 ± 0.75 AU in physical units. We also identified a competitive model with similar planet and host star masses, but with a smaller orbital radius of 1.50 ± 0.50 AU. The planet is therefore located beyond the snow line of its host star, which we estimate to be around ~1-1.5 AU.",

author = "N. Kains and Street, {R. A.} and J.-Y. Choi and C. Han and A. Udalski and Almeida, {L. A.} and F. Jablonski and Tristram, {P. J.} and J{\o}rgensen, {U. G.} and Szyma{\'n}ski, {M. K.} and M. Kubiak and G. Pietrzy{\'n}ski and I. Soszy{\'n}ski and R. Poleski and S. Koz{\l}owski and P. Pietrukowicz and K. Ulaczyk and {\L}. Wyrzykowski and J. Skowron and Alsubai, {K. A.} and V. Bozza and P. Browne and Burgdorf, {M. J.} and {Calchi Novati}, S. and P. Dodds and M. Dominik and S. Dreizler and X.-S. Fang and Frank Grundahl and C.-H. Gu and S. Hardis and Harps{\o}e, {Kennet Bomann West} and Hessman, {F. V.} and Hinse, {T. C.} and A. Hornstrup and M. Hundertmark and Jens Jessen-Hansen and E. Kerins and C. Liebig and Mikkel Lund and Mia Lundkvist and L. Mancini and M. Mathiasen and Penny, {M. T.} and S. Rahvar and D. Ricci and Sahu, {K. C.} and G. Scarpetta and J. Skottfelt and C. Snodgrass and J. Southworth and J. Surdej and J. Tregloan-Reed and J. Wambsganss and O. Wertz and D. Bajek and Bramich, {D. M.} and K. Horne and S. Ipatov and Steele, {I. A.} and Y. Tsapras and F. Abe and Bennett, {D. P.} and Bond, {I. A.} and Botzler, {C. S.} and P. Chote and M. Freeman and A. Fukui and K. Furusawa and Y. Itow and Ling, {C. H.} and K. Masuda and Y. Matsubara and N. Miyake and Y. Muraki and K. Ohnishi and N. Rattenbury and T. Saito and Sullivan, {D. J.} and T. Sumi and D. Suzuki and K. Suzuki and Sweatman, {W. L.} and S. Takino and K. Wada and Yock, {P. C. M.} and W. Allen and V. Batista and S.-J. Chung and G. Christie and DePoy, {D. L.} and J. Drummond and Gaudi, {B. S.} and A. Gould and C. Henderson and Y.-K. Jung and J.-R. Koo and C.-U. Lee and J. McCormick and D. McGregor and Mu{\~n}oz, {J. A.} and T. Natusch and H. Ngan and H. Park and Pogge, {R. W.} and I.-G. Shin and J. Yee and Albrow, {M. D.} and E. Bachelet and J.-P. Beaulieu and S. Brillant and Caldwell, {J. A. R.} and A. Cassan and A. Cole and E. Corrales and Ch. Coutures and S. Dieters and {Dominis Prester}, D. and J. Donatowicz and P. Fouqu{\'e} and J. Greenhill and Kane, {S. R.} and D. Kubas and J.-B. Marquette and R. Martin and P. Meintjes and J. Menzies and Pollard, {K. R.} and A. Williams and D. Wouters and M. Zub",

year = "2013",

doi = "10.1051/0004-6361/201220626",

language = "English",

volume = "552",

journal = "Astronomy and Astrophysics Supplement Series",

issn = "0004-6361",

publisher = "E D P Sciences",

}

TY - JOUR

T1 - A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251

AU - Kains, N.

AU - Street, R. A.

AU - Choi, J.-Y.

AU - Han, C.

AU - Udalski, A.

AU - Almeida, L. A.

AU - Jablonski, F.

AU - Tristram, P. J.

AU - Jørgensen, U. G.

AU - Szymański, M. K.

AU - Kubiak, M.

AU - Pietrzyński, G.

AU - Soszyński, I.

AU - Poleski, R.

AU - Kozłowski, S.

AU - Pietrukowicz, P.

AU - Ulaczyk, K.

AU - Wyrzykowski, Ł.

AU - Skowron, J.

AU - Alsubai, K. A.

AU - Bozza, V.

AU - Browne, P.

AU - Burgdorf, M. J.

AU - Calchi Novati, S.

AU - Dodds, P.

AU - Dominik, M.

AU - Dreizler, S.

AU - Fang, X.-S.

AU - Grundahl, Frank

AU - Gu, C.-H.

AU - Hardis, S.

AU - Harpsøe, Kennet Bomann West

AU - Hessman, F. V.

AU - Hinse, T. C.

AU - Hornstrup, A.

AU - Hundertmark, M.

AU - Jessen-Hansen, Jens

AU - Kerins, E.

AU - Liebig, C.

AU - Lund, Mikkel

AU - Lundkvist, Mia

AU - Mancini, L.

AU - Mathiasen, M.

AU - Penny, M. T.

AU - Rahvar, S.

AU - Ricci, D.

AU - Sahu, K. C.

AU - Scarpetta, G.

AU - Skottfelt, J.

AU - Snodgrass, C.

AU - Southworth, J.

AU - Surdej, J.

AU - Tregloan-Reed, J.

AU - Wambsganss, J.

AU - Wertz, O.

AU - Bajek, D.

AU - Bramich, D. M.

AU - Horne, K.

AU - Ipatov, S.

AU - Steele, I. A.

AU - Tsapras, Y.

AU - Abe, F.

AU - Bennett, D. P.

AU - Bond, I. A.

AU - Botzler, C. S.

AU - Chote, P.

AU - Freeman, M.

AU - Fukui, A.

AU - Furusawa, K.

AU - Itow, Y.

AU - Ling, C. H.

AU - Masuda, K.

AU - Matsubara, Y.

AU - Miyake, N.

AU - Muraki, Y.

AU - Ohnishi, K.

AU - Rattenbury, N.

AU - Saito, T.

AU - Sullivan, D. J.

AU - Sumi, T.

AU - Suzuki, D.

AU - Suzuki, K.

AU - Sweatman, W. L.

AU - Takino, S.

AU - Wada, K.

AU - Yock, P. C. M.

AU - Allen, W.

AU - Batista, V.

AU - Chung, S.-J.

AU - Christie, G.

AU - DePoy, D. L.

AU - Drummond, J.

AU - Gaudi, B. S.

AU - Gould, A.

AU - Henderson, C.

AU - Jung, Y.-K.

AU - Koo, J.-R.

AU - Lee, C.-U.

AU - McCormick, J.

AU - McGregor, D.

AU - Muñoz, J. A.

AU - Natusch, T.

AU - Ngan, H.

AU - Park, H.

AU - Pogge, R. W.

AU - Shin, I.-G.

AU - Yee, J.

AU - Albrow, M. D.

AU - Bachelet, E.

AU - Beaulieu, J.-P.

AU - Brillant, S.

AU - Caldwell, J. A. R.

AU - Cassan, A.

AU - Cole, A.

AU - Corrales, E.

AU - Coutures, Ch.

AU - Dieters, S.

AU - Dominis Prester, D.

AU - Donatowicz, J.

AU - Fouqué, P.

AU - Greenhill, J.

AU - Kane, S. R.

AU - Kubas, D.

AU - Marquette, J.-B.

AU - Martin, R.

AU - Meintjes, P.

AU - Menzies, J.

AU - Pollard, K. R.

AU - Williams, A.

AU - Wouters, D.

AU - Zub, M.

PY - 2013

Y1 - 2013

N2 - Aims. We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing observations towards the Galactic bulge. Methods. Based on detailed modelling of the observed light curve, we find that the lens is composed of two masses with a mass ratio q = 1.9 × 10-3. Thanks to our detection of higher-order effects on the light curve due to the Earth's orbital motion and the finite size of source, we are able to measure the mass and distance to the lens unambiguously. Results. We find that the lens is made up of a planet of mass 0.53 ± 0.21 M J orbiting an M dwarf host star with a mass of 0.26 ± 0.11 M⊙. The planetary system is located at a distance of 2.57 ± 0.61 kpc towards the Galactic centre. The projected separation of the planet from its host star is d = 1.408 ± 0.019, in units of the Einstein radius, which corresponds to 2.72 ± 0.75 AU in physical units. We also identified a competitive model with similar planet and host star masses, but with a smaller orbital radius of 1.50 ± 0.50 AU. The planet is therefore located beyond the snow line of its host star, which we estimate to be around ~1-1.5 AU.

AB - Aims. We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing observations towards the Galactic bulge. Methods. Based on detailed modelling of the observed light curve, we find that the lens is composed of two masses with a mass ratio q = 1.9 × 10-3. Thanks to our detection of higher-order effects on the light curve due to the Earth's orbital motion and the finite size of source, we are able to measure the mass and distance to the lens unambiguously. Results. We find that the lens is made up of a planet of mass 0.53 ± 0.21 M J orbiting an M dwarf host star with a mass of 0.26 ± 0.11 M⊙. The planetary system is located at a distance of 2.57 ± 0.61 kpc towards the Galactic centre. The projected separation of the planet from its host star is d = 1.408 ± 0.019, in units of the Einstein radius, which corresponds to 2.72 ± 0.75 AU in physical units. We also identified a competitive model with similar planet and host star masses, but with a smaller orbital radius of 1.50 ± 0.50 AU. The planet is therefore located beyond the snow line of its host star, which we estimate to be around ~1-1.5 AU.

U2 - 10.1051/0004-6361/201220626

DO - 10.1051/0004-6361/201220626

M3 - Journal article

SN - 0004-6361

VL - 552

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

M1 - A70

ER -

A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251

Abstract

Access to Document

Fingerprint

Cite this