A Cold neptune-mass planet OGLE-2007-BLG-368Lb: Cold neptunes are common

T. Sumi, D. P. Bennett, I. A. Bond, A. Udalski, V. Batista, M. Dominik, P. Fouqué, D. Kubas, A. Gould, B. MacIntosh, K. Cook, S. Dong, L. Skuljan, A. Cassan, F. Abe, C. S. Botzler, A. Fukui, K. Furusawa, J. B. Hearnshaw, Y. ItowK. Kamiya, P. M. Kilmartin, A. Korpela, W. Lin, C. H. Ling, K. Masuda, Y. Matsubara, N. Miyake, Y. Muraki, M. Nagaya, T. Nagayama, K. Ohnishi, T. Okumura, Y. C. Perrott, N. Rattenbury, To Saito, T. Sako, D. J. Sullivan, W. L. Sweatman, P. J. Tristram, P. C M Yock, J. P. Beaulieu, A. Cole, Ch Coutures, M. F. Duran, J. Greenhill, F. Jablonski, U. Marboeuf, E. Martioli, E. Pedretti, O. Pejcha, P. Rojo, M. D. Albrow, S. Brillant, M. Bode, D. M. Bramich, M. J. Burgdorf, J. A R Caldwell, H. Calitz, E. Corrales, S. Dieters, D. Dominis Prester, J. Donatowicz, K. Hill, M. Hoffman, K. Horne, U. G. Jørgensen, N. Kains, S. Kane, J. B. Marquette, R. Martin, P. Meintjes, J. Menzies, K. R. Pollard, K. C. Sahu, C. Snodgrass, I. Steele, R. Street, Y. Tsapras, J. Wambsganss, A. Williams, M. Zub, M. K. Szymański, M. Kubiak, G. Pietrzyński, I. Soszyński, O. Szewczyk, Wyrzykowski, K. Ulaczyk, W. Allen, G. W. Christie, D. L. Depoy, B. S. Gaudi, C. Han, J. Janczak, C. U. Lee, J. McCormick, F. Mallia, B. Monard, T. Natusch, B. G. Park, R. W. Pogge, R. Santallo

Research output: Contribution to journalArticle

144 Citations (Scopus)

Abstract

We present the discovery of a Neptune-mass planet OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 2.1] × 10-5 via gravitational microlensing. The planetary deviation was detected in real-time thanks to the high cadence of the Microlensing Observations in Astrophysics survey, real-time light-curve monitoring and intensive follow-up observations. A Bayesian analysis returns the stellar mass and distance at Ml = 0.64+0.21 -0.26 M· and Dl = 5.9 +0.9 -1.4 kpc, respectively, so the mass and separation of the planet are Mp = 20+7 -8 M and a = 3.3+1.4 -0.8AU, respectively. This discovery adds another cold Neptune-mass planet to the planetary sample discovered by microlensing, which now comprises four cold Neptune/super-Earths, five gas giant planets, and another sub-Saturn mass planet whose nature is unclear. The discovery of these 10 cold exoplanets by the microlensing method implies that the mass ratio function of cold exoplanets scales as dN pl/dlog qαq -0.70.2 with a 95% confidence level upper limit of n < -0.35 (where dN pl/dlog qαqn ). As microlensing is most sensitive to planets beyond the snow-line, this implies that Neptune-mass planets are at least three times more common than Jupiters in this region at the 95% confidence level.

Original languageEnglish
Pages (from-to)1641-1653
Number of pages13
JournalAstrophysical Journal
Volume710
Issue number2
DOIs
Publication statusPublished - 26 Feb 2010
Externally publishedYes

Fingerprint

Neptune (planet)
Neptune
planets
planet
extrasolar planets
mass ratios
confidence
gas giant planets
Saturn
snow
Bayesian analysis
cold
stellar mass
Jupiter (planet)
astrophysics
light curve
Jupiter
deviation
stars
monitoring

Keywords

  • Gravitational lensing: micro
  • Planetary systems

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Sumi, T., Bennett, D. P., Bond, I. A., Udalski, A., Batista, V., Dominik, M., ... Santallo, R. (2010). A Cold neptune-mass planet OGLE-2007-BLG-368Lb: Cold neptunes are common. Astrophysical Journal, 710(2), 1641-1653. https://doi.org/10.1088/0004-637X/710/2/1641

A Cold neptune-mass planet OGLE-2007-BLG-368Lb : Cold neptunes are common. / Sumi, T.; Bennett, D. P.; Bond, I. A.; Udalski, A.; Batista, V.; Dominik, M.; Fouqué, P.; Kubas, D.; Gould, A.; MacIntosh, B.; Cook, K.; Dong, S.; Skuljan, L.; Cassan, A.; Abe, F.; Botzler, C. S.; Fukui, A.; Furusawa, K.; Hearnshaw, J. B.; Itow, Y.; Kamiya, K.; Kilmartin, P. M.; Korpela, A.; Lin, W.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Miyake, N.; Muraki, Y.; Nagaya, M.; Nagayama, T.; Ohnishi, K.; Okumura, T.; Perrott, Y. C.; Rattenbury, N.; Saito, To; Sako, T.; Sullivan, D. J.; Sweatman, W. L.; Tristram, P. J.; Yock, P. C M; Beaulieu, J. P.; Cole, A.; Coutures, Ch; Duran, M. F.; Greenhill, J.; Jablonski, F.; Marboeuf, U.; Martioli, E.; Pedretti, E.; Pejcha, O.; Rojo, P.; Albrow, M. D.; Brillant, S.; Bode, M.; Bramich, D. M.; Burgdorf, M. J.; Caldwell, J. A R; Calitz, H.; Corrales, E.; Dieters, S.; Prester, D. Dominis; Donatowicz, J.; Hill, K.; Hoffman, M.; Horne, K.; Jørgensen, U. G.; Kains, N.; Kane, S.; Marquette, J. B.; Martin, R.; Meintjes, P.; Menzies, J.; Pollard, K. R.; Sahu, K. C.; Snodgrass, C.; Steele, I.; Street, R.; Tsapras, Y.; Wambsganss, J.; Williams, A.; Zub, M.; Szymański, M. K.; Kubiak, M.; Pietrzyński, G.; Soszyński, I.; Szewczyk, O.; Wyrzykowski; Ulaczyk, K.; Allen, W.; Christie, G. W.; Depoy, D. L.; Gaudi, B. S.; Han, C.; Janczak, J.; Lee, C. U.; McCormick, J.; Mallia, F.; Monard, B.; Natusch, T.; Park, B. G.; Pogge, R. W.; Santallo, R.

In: Astrophysical Journal, Vol. 710, No. 2, 26.02.2010, p. 1641-1653.

Research output: Contribution to journalArticle

Sumi, T, Bennett, DP, Bond, IA, Udalski, A, Batista, V, Dominik, M, Fouqué, P, Kubas, D, Gould, A, MacIntosh, B, Cook, K, Dong, S, Skuljan, L, Cassan, A, Abe, F, Botzler, CS, Fukui, A, Furusawa, K, Hearnshaw, JB, Itow, Y, Kamiya, K, Kilmartin, PM, Korpela, A, Lin, W, Ling, CH, Masuda, K, Matsubara, Y, Miyake, N, Muraki, Y, Nagaya, M, Nagayama, T, Ohnishi, K, Okumura, T, Perrott, YC, Rattenbury, N, Saito, T, Sako, T, Sullivan, DJ, Sweatman, WL, Tristram, PJ, Yock, PCM, Beaulieu, JP, Cole, A, Coutures, C, Duran, MF, Greenhill, J, Jablonski, F, Marboeuf, U, Martioli, E, Pedretti, E, Pejcha, O, Rojo, P, Albrow, MD, Brillant, S, Bode, M, Bramich, DM, Burgdorf, MJ, Caldwell, JAR, Calitz, H, Corrales, E, Dieters, S, Prester, DD, Donatowicz, J, Hill, K, Hoffman, M, Horne, K, Jørgensen, UG, Kains, N, Kane, S, Marquette, JB, Martin, R, Meintjes, P, Menzies, J, Pollard, KR, Sahu, KC, Snodgrass, C, Steele, I, Street, R, Tsapras, Y, Wambsganss, J, Williams, A, Zub, M, Szymański, MK, Kubiak, M, Pietrzyński, G, Soszyński, I, Szewczyk, O, Wyrzykowski, Ulaczyk, K, Allen, W, Christie, GW, Depoy, DL, Gaudi, BS, Han, C, Janczak, J, Lee, CU, McCormick, J, Mallia, F, Monard, B, Natusch, T, Park, BG, Pogge, RW & Santallo, R 2010, 'A Cold neptune-mass planet OGLE-2007-BLG-368Lb: Cold neptunes are common', Astrophysical Journal, vol. 710, no. 2, pp. 1641-1653. https://doi.org/10.1088/0004-637X/710/2/1641
Sumi T, Bennett DP, Bond IA, Udalski A, Batista V, Dominik M et al. A Cold neptune-mass planet OGLE-2007-BLG-368Lb: Cold neptunes are common. Astrophysical Journal. 2010 Feb 26;710(2):1641-1653. https://doi.org/10.1088/0004-637X/710/2/1641
Sumi, T. ; Bennett, D. P. ; Bond, I. A. ; Udalski, A. ; Batista, V. ; Dominik, M. ; Fouqué, P. ; Kubas, D. ; Gould, A. ; MacIntosh, B. ; Cook, K. ; Dong, S. ; Skuljan, L. ; Cassan, A. ; Abe, F. ; Botzler, C. S. ; Fukui, A. ; Furusawa, K. ; Hearnshaw, J. B. ; Itow, Y. ; Kamiya, K. ; Kilmartin, P. M. ; Korpela, A. ; Lin, W. ; Ling, C. H. ; Masuda, K. ; Matsubara, Y. ; Miyake, N. ; Muraki, Y. ; Nagaya, M. ; Nagayama, T. ; Ohnishi, K. ; Okumura, T. ; Perrott, Y. C. ; Rattenbury, N. ; Saito, To ; Sako, T. ; Sullivan, D. J. ; Sweatman, W. L. ; Tristram, P. J. ; Yock, P. C M ; Beaulieu, J. P. ; Cole, A. ; Coutures, Ch ; Duran, M. F. ; Greenhill, J. ; Jablonski, F. ; Marboeuf, U. ; Martioli, E. ; Pedretti, E. ; Pejcha, O. ; Rojo, P. ; Albrow, M. D. ; Brillant, S. ; Bode, M. ; Bramich, D. M. ; Burgdorf, M. J. ; Caldwell, J. A R ; Calitz, H. ; Corrales, E. ; Dieters, S. ; Prester, D. Dominis ; Donatowicz, J. ; Hill, K. ; Hoffman, M. ; Horne, K. ; Jørgensen, U. G. ; Kains, N. ; Kane, S. ; Marquette, J. B. ; Martin, R. ; Meintjes, P. ; Menzies, J. ; Pollard, K. R. ; Sahu, K. C. ; Snodgrass, C. ; Steele, I. ; Street, R. ; Tsapras, Y. ; Wambsganss, J. ; Williams, A. ; Zub, M. ; Szymański, M. K. ; Kubiak, M. ; Pietrzyński, G. ; Soszyński, I. ; Szewczyk, O. ; Wyrzykowski ; Ulaczyk, K. ; Allen, W. ; Christie, G. W. ; Depoy, D. L. ; Gaudi, B. S. ; Han, C. ; Janczak, J. ; Lee, C. U. ; McCormick, J. ; Mallia, F. ; Monard, B. ; Natusch, T. ; Park, B. G. ; Pogge, R. W. ; Santallo, R. / A Cold neptune-mass planet OGLE-2007-BLG-368Lb : Cold neptunes are common. In: Astrophysical Journal. 2010 ; Vol. 710, No. 2. pp. 1641-1653.
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abstract = "We present the discovery of a Neptune-mass planet OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 2.1] × 10-5 via gravitational microlensing. The planetary deviation was detected in real-time thanks to the high cadence of the Microlensing Observations in Astrophysics survey, real-time light-curve monitoring and intensive follow-up observations. A Bayesian analysis returns the stellar mass and distance at Ml = 0.64+0.21 -0.26 M· and Dl = 5.9 +0.9 -1.4 kpc, respectively, so the mass and separation of the planet are Mp = 20+7 -8 M ⊕ and a = 3.3+1.4 -0.8AU, respectively. This discovery adds another cold Neptune-mass planet to the planetary sample discovered by microlensing, which now comprises four cold Neptune/super-Earths, five gas giant planets, and another sub-Saturn mass planet whose nature is unclear. The discovery of these 10 cold exoplanets by the microlensing method implies that the mass ratio function of cold exoplanets scales as dN pl/dlog qαq -0.70.2 with a 95{\%} confidence level upper limit of n < -0.35 (where dN pl/dlog qαqn ). As microlensing is most sensitive to planets beyond the snow-line, this implies that Neptune-mass planets are at least three times more common than Jupiters in this region at the 95{\%} confidence level.",
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TY - JOUR

T1 - A Cold neptune-mass planet OGLE-2007-BLG-368Lb

T2 - Cold neptunes are common

AU - Sumi, T.

AU - Bennett, D. P.

AU - Bond, I. A.

AU - Udalski, A.

AU - Batista, V.

AU - Dominik, M.

AU - Fouqué, P.

AU - Kubas, D.

AU - Gould, A.

AU - MacIntosh, B.

AU - Cook, K.

AU - Dong, S.

AU - Skuljan, L.

AU - Cassan, A.

AU - Abe, F.

AU - Botzler, C. S.

AU - Fukui, A.

AU - Furusawa, K.

AU - Hearnshaw, J. B.

AU - Itow, Y.

AU - Kamiya, K.

AU - Kilmartin, P. M.

AU - Korpela, A.

AU - Lin, W.

AU - Ling, C. H.

AU - Masuda, K.

AU - Matsubara, Y.

AU - Miyake, N.

AU - Muraki, Y.

AU - Nagaya, M.

AU - Nagayama, T.

AU - Ohnishi, K.

AU - Okumura, T.

AU - Perrott, Y. C.

AU - Rattenbury, N.

AU - Saito, To

AU - Sako, T.

AU - Sullivan, D. J.

AU - Sweatman, W. L.

AU - Tristram, P. J.

AU - Yock, P. C M

AU - Beaulieu, J. P.

AU - Cole, A.

AU - Coutures, Ch

AU - Duran, M. F.

AU - Greenhill, J.

AU - Jablonski, F.

AU - Marboeuf, U.

AU - Martioli, E.

AU - Pedretti, E.

AU - Pejcha, O.

AU - Rojo, P.

AU - Albrow, M. D.

AU - Brillant, S.

AU - Bode, M.

AU - Bramich, D. M.

AU - Burgdorf, M. J.

AU - Caldwell, J. A R

AU - Calitz, H.

AU - Corrales, E.

AU - Dieters, S.

AU - Prester, D. Dominis

AU - Donatowicz, J.

AU - Hill, K.

AU - Hoffman, M.

AU - Horne, K.

AU - Jørgensen, U. G.

AU - Kains, N.

AU - Kane, S.

AU - Marquette, J. B.

AU - Martin, R.

AU - Meintjes, P.

AU - Menzies, J.

AU - Pollard, K. R.

AU - Sahu, K. C.

AU - Snodgrass, C.

AU - Steele, I.

AU - Street, R.

AU - Tsapras, Y.

AU - Wambsganss, J.

AU - Williams, A.

AU - Zub, M.

AU - Szymański, M. K.

AU - Kubiak, M.

AU - Pietrzyński, G.

AU - Soszyński, I.

AU - Szewczyk, O.

AU - Wyrzykowski,

AU - Ulaczyk, K.

AU - Allen, W.

AU - Christie, G. W.

AU - Depoy, D. L.

AU - Gaudi, B. S.

AU - Han, C.

AU - Janczak, J.

AU - Lee, C. U.

AU - McCormick, J.

AU - Mallia, F.

AU - Monard, B.

AU - Natusch, T.

AU - Park, B. G.

AU - Pogge, R. W.

AU - Santallo, R.

PY - 2010/2/26

Y1 - 2010/2/26

N2 - We present the discovery of a Neptune-mass planet OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 2.1] × 10-5 via gravitational microlensing. The planetary deviation was detected in real-time thanks to the high cadence of the Microlensing Observations in Astrophysics survey, real-time light-curve monitoring and intensive follow-up observations. A Bayesian analysis returns the stellar mass and distance at Ml = 0.64+0.21 -0.26 M· and Dl = 5.9 +0.9 -1.4 kpc, respectively, so the mass and separation of the planet are Mp = 20+7 -8 M ⊕ and a = 3.3+1.4 -0.8AU, respectively. This discovery adds another cold Neptune-mass planet to the planetary sample discovered by microlensing, which now comprises four cold Neptune/super-Earths, five gas giant planets, and another sub-Saturn mass planet whose nature is unclear. The discovery of these 10 cold exoplanets by the microlensing method implies that the mass ratio function of cold exoplanets scales as dN pl/dlog qαq -0.70.2 with a 95% confidence level upper limit of n < -0.35 (where dN pl/dlog qαqn ). As microlensing is most sensitive to planets beyond the snow-line, this implies that Neptune-mass planets are at least three times more common than Jupiters in this region at the 95% confidence level.

AB - We present the discovery of a Neptune-mass planet OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 2.1] × 10-5 via gravitational microlensing. The planetary deviation was detected in real-time thanks to the high cadence of the Microlensing Observations in Astrophysics survey, real-time light-curve monitoring and intensive follow-up observations. A Bayesian analysis returns the stellar mass and distance at Ml = 0.64+0.21 -0.26 M· and Dl = 5.9 +0.9 -1.4 kpc, respectively, so the mass and separation of the planet are Mp = 20+7 -8 M ⊕ and a = 3.3+1.4 -0.8AU, respectively. This discovery adds another cold Neptune-mass planet to the planetary sample discovered by microlensing, which now comprises four cold Neptune/super-Earths, five gas giant planets, and another sub-Saturn mass planet whose nature is unclear. The discovery of these 10 cold exoplanets by the microlensing method implies that the mass ratio function of cold exoplanets scales as dN pl/dlog qαq -0.70.2 with a 95% confidence level upper limit of n < -0.35 (where dN pl/dlog qαqn ). As microlensing is most sensitive to planets beyond the snow-line, this implies that Neptune-mass planets are at least three times more common than Jupiters in this region at the 95% confidence level.

KW - Gravitational lensing: micro

KW - Planetary systems

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UR - http://www.scopus.com/inward/citedby.url?scp=77149121756&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/710/2/1641

DO - 10.1088/0004-637X/710/2/1641

M3 - Article

AN - SCOPUS:77149121756

VL - 710

SP - 1641

EP - 1653

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

ER -