Limits on additional planetary companions to OGLE 2005-BLG-390L

D. Kubas; A. Cassan; M. Dominik; D. P. Bennett; J. Wambsganss; S. Brillant; J. P. Beaulieu; M. D. Albrow; V. Batista; M. Bode; D. M. Bramich; M. Burgdorf; J. A. R. Caldwell; H. Calitz; K. H. Cook; Ch. Coutures; S. Dieters; D. Dominis Prester; J. Donatowicz; P. Fouque; J. Greenhill; K. Hill; M. Hoffman; K. Horne; U. G. Jorgensen; N. Kains; S. Kane; J. B. Marquette; R. Martin; P. Meintjes; J. Menzies; K. R. Pollard; K. C. Sahu; C. Snodgrass; I. Steele; Y. Tsapras; C. Vinter; A. Williams; K. Woller; M. Zub; PLANET RoboNet Collaboration

doi:10.1051/0004-6361:20077449

Limits on additional planetary companions to OGLE 2005-BLG-390L

D. Kubas, A. Cassan, M. Dominik, D. P. Bennett, J. Wambsganss, S. Brillant, J. P. Beaulieu, M. D. Albrow, V. Batista, M. Bode, D. M. Bramich, M. Burgdorf, J. A. R. Caldwell, H. Calitz, K. H. Cook, Ch. Coutures, S. Dieters, D. Dominis Prester, J. Donatowicz, P. FouqueJ. Greenhill, K. Hill, M. Hoffman, K. Horne, U. G. Jorgensen, N. Kains, S. Kane, J. B. Marquette, R. Martin, P. Meintjes, J. Menzies, K. R. Pollard, K. C. Sahu, C. Snodgrass, I. Steele, Y. Tsapras, C. Vinter, A. Williams, K. Woller, M. Zub, PLANET RoboNet Collaboration

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Aims. We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE 2005-BLG-390L, around which photometric microlensing data has revealed the existence of the sub-Neptune-mass planet OGLE 2005-BLG-390Lb. We specifically aim to study potential Jovian companions and compare our findings with predictions from core-accretion and disc-instability models of planet formation. We also obtain an estimate of the detection probability for sub-Neptune mass planets similar to OGLE 2005-BLG 390Lb using a simplified simulation of a microlensing experiment.

Methods. We compute the efficiency of our photometric data for detecting additional planets around OGLE 2005-BLG-390L, as a function of the microlensing model parameters and convert it into a function of the orbital axis and planet mass by means of an adopted model of the Milky Way.

Results. We find that more than 50% of potential planets with a mass in excess of 1 M-J between 1.1 and 2.3 AU around OGLE 2005-BLG-390L would have revealed their existence, whereas for gas giants above 3 MJ in orbits between 1.5 and 2.2 AU, the detection efficiency reaches 70%; however, no such companion was observed. Our photometric microlensing data therefore do not contradict the existence of gas giant planets at any separation orbiting OGLE 2005-BLG-390L. Furthermore we find a detection probability for an OGLE 2005-BLG-390Lb-like planet of around 2-5%. In agreement with current planet formation theories, this quantitatively supports the prediction that sub-Neptune mass planets are common around low-mass stars.

Original language	English
Pages (from-to)	317-324
Number of pages	8
Journal	Astronomy & Astrophysics
Volume	483
DOIs	https://doi.org/10.1051/0004-6361:20077449
Publication status	Published - May 2008

Keywords

stars : planetary systems
gravitational lensing
NEPTUNE-MASS PLANETS
MICROLENSING EVENT
GALACTIC PLANETS
SUPER-EARTHS
DETERMINISTIC MODEL
EXTRASOLAR PLANETS
HIGH-MAGNIFICATION
STARS
STELLAR
SYSTEM

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10.1051/0004-6361:20077449

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Kubas, D., Cassan, A., Dominik, M., Bennett, D. P., Wambsganss, J., Brillant, S., Beaulieu, J. P., Albrow, M. D., Batista, V., Bode, M., Bramich, D. M., Burgdorf, M., Caldwell, J. A. R., Calitz, H., Cook, K. H., Coutures, C., Dieters, S., Prester, D. D., Donatowicz, J., ... PLANET RoboNet Collaboration (2008). Limits on additional planetary companions to OGLE 2005-BLG-390L. Astronomy & Astrophysics, 483, 317-324. https://doi.org/10.1051/0004-6361:20077449

@article{045a1f6eb29a4114bebf2f7c2ae76706,

title = "Limits on additional planetary companions to OGLE 2005-BLG-390L",

abstract = "Aims. We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE 2005-BLG-390L, around which photometric microlensing data has revealed the existence of the sub-Neptune-mass planet OGLE 2005-BLG-390Lb. We specifically aim to study potential Jovian companions and compare our findings with predictions from core-accretion and disc-instability models of planet formation. We also obtain an estimate of the detection probability for sub-Neptune mass planets similar to OGLE 2005-BLG 390Lb using a simplified simulation of a microlensing experiment.Methods. We compute the efficiency of our photometric data for detecting additional planets around OGLE 2005-BLG-390L, as a function of the microlensing model parameters and convert it into a function of the orbital axis and planet mass by means of an adopted model of the Milky Way.Results. We find that more than 50% of potential planets with a mass in excess of 1 M-J between 1.1 and 2.3 AU around OGLE 2005-BLG-390L would have revealed their existence, whereas for gas giants above 3 MJ in orbits between 1.5 and 2.2 AU, the detection efficiency reaches 70%; however, no such companion was observed. Our photometric microlensing data therefore do not contradict the existence of gas giant planets at any separation orbiting OGLE 2005-BLG-390L. Furthermore we find a detection probability for an OGLE 2005-BLG-390Lb-like planet of around 2-5%. In agreement with current planet formation theories, this quantitatively supports the prediction that sub-Neptune mass planets are common around low-mass stars.",

keywords = "stars : planetary systems, gravitational lensing, NEPTUNE-MASS PLANETS, MICROLENSING EVENT, GALACTIC PLANETS, SUPER-EARTHS, DETERMINISTIC MODEL, EXTRASOLAR PLANETS, HIGH-MAGNIFICATION, STARS, STELLAR, SYSTEM",

author = "D. Kubas and A. Cassan and M. Dominik and Bennett, {D. P.} and J. Wambsganss and S. Brillant and Beaulieu, {J. P.} and Albrow, {M. D.} and V. Batista and M. Bode and Bramich, {D. M.} and M. Burgdorf and Caldwell, {J. A. R.} and H. Calitz and Cook, {K. H.} and Ch. Coutures and S. Dieters and Prester, {D. Dominis} and J. Donatowicz and P. Fouque and J. Greenhill and K. Hill and M. Hoffman and K. Horne and Jorgensen, {U. G.} and N. Kains and S. Kane and Marquette, {J. B.} and R. Martin and P. Meintjes and J. Menzies and Pollard, {K. R.} and Sahu, {K. C.} and C. Snodgrass and I. Steele and Y. Tsapras and C. Vinter and A. Williams and K. Woller and M. Zub and {PLANET RoboNet Collaboration}",

year = "2008",

month = may,

doi = "10.1051/0004-6361:20077449",

language = "English",

volume = "483",

pages = "317--324",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

}

Kubas, D, Cassan, A, Dominik, M, Bennett, DP, Wambsganss, J, Brillant, S, Beaulieu, JP, Albrow, MD, Batista, V, Bode, M, Bramich, DM, Burgdorf, M, Caldwell, JAR, Calitz, H, Cook, KH, Coutures, C, Dieters, S, Prester, DD, Donatowicz, J, Fouque, P, Greenhill, J, Hill, K, Hoffman, M, Horne, K, Jorgensen, UG, Kains, N, Kane, S, Marquette, JB, Martin, R, Meintjes, P, Menzies, J, Pollard, KR, Sahu, KC, Snodgrass, C, Steele, I, Tsapras, Y, Vinter, C, Williams, A, Woller, K, Zub, M & PLANET RoboNet Collaboration 2008, 'Limits on additional planetary companions to OGLE 2005-BLG-390L', Astronomy & Astrophysics, vol. 483, pp. 317-324. https://doi.org/10.1051/0004-6361:20077449

TY - JOUR

T1 - Limits on additional planetary companions to OGLE 2005-BLG-390L

AU - Kubas, D.

AU - Cassan, A.

AU - Dominik, M.

AU - Bennett, D. P.

AU - Wambsganss, J.

AU - Brillant, S.

AU - Beaulieu, J. P.

AU - Albrow, M. D.

AU - Batista, V.

AU - Bode, M.

AU - Bramich, D. M.

AU - Burgdorf, M.

AU - Caldwell, J. A. R.

AU - Calitz, H.

AU - Cook, K. H.

AU - Coutures, Ch.

AU - Dieters, S.

AU - Prester, D. Dominis

AU - Donatowicz, J.

AU - Fouque, P.

AU - Greenhill, J.

AU - Hill, K.

AU - Hoffman, M.

AU - Horne, K.

AU - Jorgensen, 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 - Tsapras, Y.

AU - Vinter, C.

AU - Williams, A.

AU - Woller, K.

AU - Zub, M.

AU - PLANET RoboNet Collaboration

PY - 2008/5

Y1 - 2008/5

N2 - Aims. We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE 2005-BLG-390L, around which photometric microlensing data has revealed the existence of the sub-Neptune-mass planet OGLE 2005-BLG-390Lb. We specifically aim to study potential Jovian companions and compare our findings with predictions from core-accretion and disc-instability models of planet formation. We also obtain an estimate of the detection probability for sub-Neptune mass planets similar to OGLE 2005-BLG 390Lb using a simplified simulation of a microlensing experiment.Methods. We compute the efficiency of our photometric data for detecting additional planets around OGLE 2005-BLG-390L, as a function of the microlensing model parameters and convert it into a function of the orbital axis and planet mass by means of an adopted model of the Milky Way.Results. We find that more than 50% of potential planets with a mass in excess of 1 M-J between 1.1 and 2.3 AU around OGLE 2005-BLG-390L would have revealed their existence, whereas for gas giants above 3 MJ in orbits between 1.5 and 2.2 AU, the detection efficiency reaches 70%; however, no such companion was observed. Our photometric microlensing data therefore do not contradict the existence of gas giant planets at any separation orbiting OGLE 2005-BLG-390L. Furthermore we find a detection probability for an OGLE 2005-BLG-390Lb-like planet of around 2-5%. In agreement with current planet formation theories, this quantitatively supports the prediction that sub-Neptune mass planets are common around low-mass stars.

AB - Aims. We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE 2005-BLG-390L, around which photometric microlensing data has revealed the existence of the sub-Neptune-mass planet OGLE 2005-BLG-390Lb. We specifically aim to study potential Jovian companions and compare our findings with predictions from core-accretion and disc-instability models of planet formation. We also obtain an estimate of the detection probability for sub-Neptune mass planets similar to OGLE 2005-BLG 390Lb using a simplified simulation of a microlensing experiment.Methods. We compute the efficiency of our photometric data for detecting additional planets around OGLE 2005-BLG-390L, as a function of the microlensing model parameters and convert it into a function of the orbital axis and planet mass by means of an adopted model of the Milky Way.Results. We find that more than 50% of potential planets with a mass in excess of 1 M-J between 1.1 and 2.3 AU around OGLE 2005-BLG-390L would have revealed their existence, whereas for gas giants above 3 MJ in orbits between 1.5 and 2.2 AU, the detection efficiency reaches 70%; however, no such companion was observed. Our photometric microlensing data therefore do not contradict the existence of gas giant planets at any separation orbiting OGLE 2005-BLG-390L. Furthermore we find a detection probability for an OGLE 2005-BLG-390Lb-like planet of around 2-5%. In agreement with current planet formation theories, this quantitatively supports the prediction that sub-Neptune mass planets are common around low-mass stars.

KW - stars : planetary systems

KW - gravitational lensing

KW - NEPTUNE-MASS PLANETS

KW - MICROLENSING EVENT

KW - GALACTIC PLANETS

KW - SUPER-EARTHS

KW - DETERMINISTIC MODEL

KW - EXTRASOLAR PLANETS

KW - HIGH-MAGNIFICATION

KW - STARS

KW - STELLAR

KW - SYSTEM

UR - http://www.scopus.com/inward/record.url?scp=43049103126&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20077449

DO - 10.1051/0004-6361:20077449

M3 - Article

SN - 0004-6361

VL - 483

SP - 317

EP - 324

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

ER -

Limits on additional planetary companions to OGLE 2005-BLG-390L

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Limits on additional planetary companions to OGLE 2005-BLG-390L

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