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, Wyrzykowski, J. Skowron, Khalid Al-SubaiV. Bozza, P. Browne, M. J. Burgdorf, S. Calchi Novati, P. Dodds, M. Dominik, S. Dreizler, X. S. Fang, F. Grundahl, C. H. Gu, S. Hardis, K. Harpsøe, F. V. Hessman, T. C. Hinse, A. Hornstrup, M. Hundertmark, J. Jessen-Hansen, E. Kerins, C. Liebig, M. Lund, M. 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

Research output: Contribution to journalArticle

25 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 languageEnglish
Article numberA70
JournalAstronomy and Astrophysics
Volume552
DOIs
Publication statusPublished - 8 Apr 2013

Fingerprint

snow
planets
planet
lenses
stars
light curve
dwarf stars
galactic bulge
M stars
radii
planetary systems
mass ratios
orbits
conduction
orbitals
estimates
modeling

Keywords

  • Galaxy: bulge
  • Gravitational lensing: weak
  • Planetary systems
  • Planets and satellites: detection

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Kains, N., Street, R. A., Choi, J. Y., Han, C., Udalski, A., Almeida, L. A., ... Zub, M. (2013). A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251. Astronomy and Astrophysics, 552, [A70]. https://doi.org/10.1051/0004-6361/201220626

A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251. / 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; Skowron, J.; Al-Subai, Khalid; Bozza, V.; Browne, P.; Burgdorf, M. J.; Calchi Novati, S.; Dodds, P.; Dominik, M.; Dreizler, S.; Fang, X. S.; Grundahl, F.; Gu, C. H.; Hardis, S.; Harpsøe, K.; Hessman, F. V.; Hinse, T. C.; Hornstrup, A.; Hundertmark, M.; Jessen-Hansen, J.; Kerins, E.; Liebig, C.; Lund, M.; Lundkvist, M.; Mancini, L.; Mathiasen, M.; Penny, M. T.; Rahvar, S.; Ricci, D.; Sahu, K. C.; Scarpetta, G.; Skottfelt, J.; Snodgrass, C.; Southworth, J.; Surdej, J.; Tregloan-Reed, J.; Wambsganss, J.; Wertz, O.; Bajek, D.; Bramich, D. M.; Horne, K.; Ipatov, S.; Steele, I. A.; Tsapras, Y.; Abe, F.; Bennett, D. P.; Bond, I. A.; Botzler, C. S.; Chote, P.; Freeman, M.; Fukui, A.; Furusawa, K.; Itow, Y.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Miyake, N.; Muraki, Y.; Ohnishi, K.; Rattenbury, N.; Saito, T.; Sullivan, D. J.; Sumi, T.; Suzuki, D.; Suzuki, K.; Sweatman, W. L.; Takino, S.; Wada, K.; Yock, P. C M; Allen, W.; Batista, V.; Chung, S. J.; Christie, G.; Depoy, D. L.; Drummond, J.; Gaudi, B. S.; Gould, A.; Henderson, C.; Jung, Y. K.; Koo, J. R.; Lee, C. U.; McCormick, J.; McGregor, D.; Muñoz, J. A.; Natusch, T.; Ngan, H.; Park, H.; Pogge, R. W.; Shin, I. G.; Yee, J.; Albrow, M. D.; Bachelet, E.; Beaulieu, J. P.; Brillant, S.; Caldwell, J. A R; Cassan, A.; Cole, A.; Corrales, E.; Coutures, Ch; Dieters, S.; Dominis Prester, D.; Donatowicz, J.; Fouqué, P.; Greenhill, J.; Kane, S. R.; Kubas, D.; Marquette, J. B.; Martin, R.; Meintjes, P.; Menzies, J.; Pollard, K. R.; Williams, A.; Wouters, D.; Zub, M.

In: Astronomy and Astrophysics, Vol. 552, A70, 08.04.2013.

Research output: Contribution to journalArticle

Kains, N, Street, RA, Choi, JY, 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, Skowron, J, Al-Subai, K, Bozza, V, Browne, P, Burgdorf, MJ, Calchi Novati, S, Dodds, P, Dominik, M, Dreizler, S, Fang, XS, Grundahl, F, Gu, CH, Hardis, S, Harpsøe, K, 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, SJ, Christie, G, Depoy, DL, Drummond, J, Gaudi, BS, Gould, A, Henderson, C, Jung, YK, Koo, JR, Lee, CU, McCormick, J, McGregor, D, Muñoz, JA, Natusch, T, Ngan, H, Park, H, Pogge, RW, Shin, IG, Yee, J, Albrow, MD, Bachelet, E, Beaulieu, JP, 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, JB, 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 and Astrophysics, vol. 552, A70. https://doi.org/10.1051/0004-6361/201220626
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 ; Skowron, J. ; Al-Subai, Khalid ; Bozza, V. ; Browne, P. ; Burgdorf, M. J. ; Calchi Novati, S. ; Dodds, P. ; Dominik, M. ; Dreizler, S. ; Fang, X. S. ; Grundahl, F. ; Gu, C. H. ; Hardis, S. ; Harpsøe, K. ; Hessman, F. V. ; Hinse, T. C. ; Hornstrup, A. ; Hundertmark, M. ; Jessen-Hansen, J. ; Kerins, E. ; Liebig, C. ; Lund, M. ; Lundkvist, M. ; Mancini, L. ; Mathiasen, M. ; Penny, M. T. ; Rahvar, S. ; Ricci, D. ; Sahu, K. C. ; Scarpetta, G. ; Skottfelt, J. ; Snodgrass, C. ; Southworth, J. ; Surdej, J. ; Tregloan-Reed, J. ; Wambsganss, J. ; Wertz, O. ; Bajek, D. ; Bramich, D. M. ; Horne, K. ; Ipatov, S. ; Steele, I. A. ; Tsapras, Y. ; Abe, F. ; Bennett, D. P. ; Bond, I. A. ; Botzler, C. S. ; Chote, P. ; Freeman, M. ; Fukui, A. ; Furusawa, K. ; Itow, Y. ; Ling, C. H. ; Masuda, K. ; Matsubara, Y. ; Miyake, N. ; Muraki, Y. ; Ohnishi, K. ; Rattenbury, N. ; Saito, T. ; Sullivan, D. J. ; Sumi, T. ; Suzuki, D. ; Suzuki, K. ; Sweatman, W. L. ; Takino, S. ; Wada, K. ; Yock, P. C M ; Allen, W. ; Batista, V. ; Chung, S. J. ; Christie, G. ; Depoy, D. L. ; Drummond, J. ; Gaudi, B. S. ; Gould, A. ; Henderson, C. ; Jung, Y. K. ; Koo, J. R. ; Lee, C. U. ; McCormick, J. ; McGregor, D. ; Muñoz, J. A. ; Natusch, T. ; Ngan, H. ; Park, H. ; Pogge, R. W. ; Shin, I. G. ; Yee, J. ; Albrow, M. D. ; Bachelet, E. ; Beaulieu, J. P. ; Brillant, S. ; Caldwell, J. A R ; Cassan, A. ; Cole, A. ; Corrales, E. ; Coutures, Ch ; Dieters, S. ; Dominis Prester, D. ; Donatowicz, J. ; Fouqué, P. ; Greenhill, J. ; Kane, S. R. ; Kubas, D. ; Marquette, J. B. ; Martin, R. ; Meintjes, P. ; Menzies, J. ; Pollard, K. R. ; Williams, A. ; Wouters, D. ; Zub, M. / A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251. In: Astronomy and Astrophysics. 2013 ; Vol. 552.
@article{d0534cbfd68146a5ad6d2fb4fe07068e,
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.",
keywords = "Galaxy: bulge, Gravitational lensing: weak, Planetary systems, Planets and satellites: detection",
author = "N. Kains and Street, {R. A.} and Choi, {J. Y.} and C. Han and A. Udalski and Almeida, {L. A.} and F. Jablonski and Tristram, {P. J.} and J{\o}rgensen, {U. G.} and Szymański, {M. K.} and M. Kubiak and G. Pietrzyński and I. Soszyński and R. Poleski and S. Kozłowski and P. Pietrukowicz and K. Ulaczyk and Wyrzykowski and J. Skowron and Khalid Al-Subai and V. Bozza and P. Browne and Burgdorf, {M. J.} and {Calchi Novati}, S. and P. Dodds and M. Dominik and S. Dreizler and Fang, {X. S.} and F. Grundahl and Gu, {C. H.} and S. Hardis and K. Harps{\o}e and Hessman, {F. V.} and Hinse, {T. C.} and A. Hornstrup and M. Hundertmark and J. Jessen-Hansen and E. Kerins and C. Liebig and M. Lund and M. 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 Chung, {S. J.} and G. Christie and Depoy, {D. L.} and J. Drummond and Gaudi, {B. S.} and A. Gould and C. Henderson and Jung, {Y. K.} and Koo, {J. R.} and Lee, {C. U.} 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 Shin, {I. G.} and J. Yee and Albrow, {M. D.} and E. Bachelet and Beaulieu, {J. P.} 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 Marquette, {J. B.} and R. Martin and P. Meintjes and J. Menzies and Pollard, {K. R.} and A. Williams and D. Wouters and M. Zub",
year = "2013",
month = "4",
day = "8",
doi = "10.1051/0004-6361/201220626",
language = "English",
volume = "552",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
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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,

AU - Skowron, J.

AU - Al-Subai, Khalid

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, F.

AU - Gu, C. H.

AU - Hardis, S.

AU - Harpsøe, K.

AU - Hessman, F. V.

AU - Hinse, T. C.

AU - Hornstrup, A.

AU - Hundertmark, M.

AU - Jessen-Hansen, J.

AU - Kerins, E.

AU - Liebig, C.

AU - Lund, M.

AU - Lundkvist, M.

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 - 2013/4/8

Y1 - 2013/4/8

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.

KW - Galaxy: bulge

KW - Gravitational lensing: weak

KW - Planetary systems

KW - Planets and satellites: detection

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U2 - 10.1051/0004-6361/201220626

DO - 10.1051/0004-6361/201220626

M3 - Article

AN - SCOPUS:84875756890

VL - 552

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A70

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