EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279: STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR

J. C. Yee; A. Udalski; T. Sumi; Subo Dong; S. Kozlowski; J. C. Bird; A. Cole; D. Higgins; J. McCormick; L. A. G. Monard; D. Polishook; A. Shporer; O. Spector; M. K. Szymanski; M. Kubiak; G. Pietrzynski; I. Soszynski; O. Szewczyk; K. Ulaczyk; L. Wyrzykowski; R. Poleski; W. Allen; M. Bos; G. W. Christie; D. L. DePoy; J. D. Eastman; B. S. Gaudi; A. Gould; C. Han; S. Kaspi; C. -U. Lee; F. Mallia; A. Maury; D. Maoz; T. Natusch; B. -G. Park; R. W. Pogge; R. Santallo; F. Abe; I. A. Bond; A. Fukui; K. Furusawa; J. B. Hearnshaw; S. Hosaka; Y. Itow; K. Kamiya; A. V. Korpela; P. M. Kilmartin; K. Horne; N. Kains; OGLE Collaboration; μFUN Collaboration; MOA Collaboration; PLANET Collaboration

doi:10.1088/0004-637X/703/2/2082

EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279: STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR

J. C. Yee^*, A. Udalski, T. Sumi, Subo Dong, S. Kozlowski, J. C. Bird, A. Cole, D. Higgins, J. McCormick, L. A. G. Monard, D. Polishook, A. Shporer, O. Spector, M. K. Szymanski, M. Kubiak, G. Pietrzynski, I. Soszynski, O. Szewczyk, K. Ulaczyk, L. WyrzykowskiR. Poleski, W. Allen, M. Bos, G. W. Christie, D. L. DePoy, J. D. Eastman, B. S. Gaudi, A. Gould, C. Han, S. Kaspi, C. -U. Lee, F. Mallia, A. Maury, D. Maoz, T. Natusch, B. -G. Park, R. W. Pogge, R. Santallo, F. Abe, I. A. Bond, A. Fukui, K. Furusawa, J. B. Hearnshaw, S. Hosaka, Y. Itow, K. Kamiya, A. V. Korpela, P. M. Kilmartin, K. Horne, N. Kains, OGLE Collaboration, μFUN Collaboration, MOA Collaboration, PLANET Collaboration

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A similar to 1600 on 2008 May 30. The peak of this event exhibits both finite-source effects and terrestrial parallax, from which we determine the mass of the lens, M-l = 0.64 +/- 0.10 M-circle dot, and its distance, D-l = 4.0 +/- 0.6 kpc. We rule out Jupiter-mass planetary companions to the lens star for projected separations in the range 0.5-20 AU. More generally, we find that this event was sensitive to planets with masses as small as 0.2 M-circle dot similar or equal to 2 (MMars) with projected separations near the Einstein ring (similar to 3 AU).

Original language	English
Pages (from-to)	2082-2090
Number of pages	9
Journal	Astrophysical Journal
Volume	703
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/703/2/2082
Publication status	Published - 1 Oct 2009

Keywords

gravitational lensing
planetary systems
planetary systems: formation
JOVIAN-MASS PLANET
EXTRASOLAR PLANETS
DETERMINISTIC MODEL
PHOTOMETRY
STELLAR
COOL
CONSTRAINTS
EXOPLANETS
DISCOVERY
SYSTEMS

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10.1088/0004-637X/703/2/2082

Astrophysics in St Andrews: Astrophysics in St Andrews / SUPA (Continuan of Rolling Grant - XPP089
Bonnell, I. A. (PI), Cameron, A. C. (CoI), Dominik, M. (CoI), Driver, S. P. (CoI), Greaves, J. S. (CoI), Horne, K. D. (CoI), Jardine, M. M. (CoI), Wood, K. (CoI) & Zhao, H. (CoI)
Science & Technology Facilities Council
1/04/09 → 31/03/12
Project: Standard

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Yee, J. C., Udalski, A., Sumi, T., Dong, S., Kozlowski, S., Bird, J. C., Cole, A., Higgins, D., McCormick, J., Monard, L. A. G., Polishook, D., Shporer, A., Spector, O., Szymanski, M. K., Kubiak, M., Pietrzynski, G., Soszynski, I., Szewczyk, O., Ulaczyk, K., ... PLANET Collaboration (2009). EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279: STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR. Astrophysical Journal, 703(2), 2082-2090. https://doi.org/10.1088/0004-637X/703/2/2082

@article{fa127b90cfa04cdfbb3b90137d347156,

title = "EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279: STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR",

abstract = "We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A similar to 1600 on 2008 May 30. The peak of this event exhibits both finite-source effects and terrestrial parallax, from which we determine the mass of the lens, M-l = 0.64 +/- 0.10 M-circle dot, and its distance, D-l = 4.0 +/- 0.6 kpc. We rule out Jupiter-mass planetary companions to the lens star for projected separations in the range 0.5-20 AU. More generally, we find that this event was sensitive to planets with masses as small as 0.2 M-circle dot similar or equal to 2 (MMars) with projected separations near the Einstein ring (similar to 3 AU).",

keywords = "gravitational lensing, planetary systems, planetary systems: formation, JOVIAN-MASS PLANET, EXTRASOLAR PLANETS, DETERMINISTIC MODEL, PHOTOMETRY, STELLAR, COOL, CONSTRAINTS, EXOPLANETS, DISCOVERY, SYSTEMS",

author = "Yee, {J. C.} and A. Udalski and T. Sumi and Subo Dong and S. Kozlowski and Bird, {J. C.} and A. Cole and D. Higgins and J. McCormick and Monard, {L. A. G.} and D. Polishook and A. Shporer and O. Spector and Szymanski, {M. K.} and M. Kubiak and G. Pietrzynski and I. Soszynski and O. Szewczyk and K. Ulaczyk and L. Wyrzykowski and R. Poleski and W. Allen and M. Bos and Christie, {G. W.} and DePoy, {D. L.} and Eastman, {J. D.} and Gaudi, {B. S.} and A. Gould and C. Han and S. Kaspi and Lee, {C. -U.} and F. Mallia and A. Maury and D. Maoz and T. Natusch and Park, {B. -G.} and Pogge, {R. W.} and R. Santallo and F. Abe and Bond, {I. A.} and A. Fukui and K. Furusawa and Hearnshaw, {J. B.} and S. Hosaka and Y. Itow and K. Kamiya and Korpela, {A. V.} and Kilmartin, {P. M.} and K. Horne and N. Kains and {OGLE Collaboration} and {μFUN Collaboration} and {MOA Collaboration} and {PLANET Collaboration}",

year = "2009",

month = oct,

day = "1",

doi = "10.1088/0004-637X/703/2/2082",

language = "English",

volume = "703",

pages = "2082--2090",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Yee, JC, Udalski, A, Sumi, T, Dong, S, Kozlowski, S, Bird, JC, Cole, A, Higgins, D, McCormick, J, Monard, LAG, Polishook, D, Shporer, A, Spector, O, Szymanski, MK, Kubiak, M, Pietrzynski, G, Soszynski, I, Szewczyk, O, Ulaczyk, K, Wyrzykowski, L, Poleski, R, Allen, W, Bos, M, Christie, GW, DePoy, DL, Eastman, JD, Gaudi, BS, Gould, A, Han, C, Kaspi, S, Lee, C-U, Mallia, F, Maury, A, Maoz, D, Natusch, T, Park, B-G, Pogge, RW, Santallo, R, Abe, F, Bond, IA, Fukui, A, Furusawa, K, Hearnshaw, JB, Hosaka, S, Itow, Y, Kamiya, K, Korpela, AV, Kilmartin, PM, Horne, K, Kains, N, OGLE Collaboration, μFUN Collaboration, MOA Collaboration & PLANET Collaboration 2009, 'EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279: STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR', Astrophysical Journal, vol. 703, no. 2, pp. 2082-2090. https://doi.org/10.1088/0004-637X/703/2/2082

TY - JOUR

T1 - EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279

T2 - STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR

AU - Yee, J. C.

AU - Udalski, A.

AU - Sumi, T.

AU - Dong, Subo

AU - Kozlowski, S.

AU - Bird, J. C.

AU - Cole, A.

AU - Higgins, D.

AU - McCormick, J.

AU - Monard, L. A. G.

AU - Polishook, D.

AU - Shporer, A.

AU - Spector, O.

AU - Szymanski, M. K.

AU - Kubiak, M.

AU - Pietrzynski, G.

AU - Soszynski, I.

AU - Szewczyk, O.

AU - Ulaczyk, K.

AU - Wyrzykowski, L.

AU - Poleski, R.

AU - Allen, W.

AU - Bos, M.

AU - Christie, G. W.

AU - DePoy, D. L.

AU - Eastman, J. D.

AU - Gaudi, B. S.

AU - Gould, A.

AU - Han, C.

AU - Kaspi, S.

AU - Lee, C. -U.

AU - Mallia, F.

AU - Maury, A.

AU - Maoz, D.

AU - Natusch, T.

AU - Park, B. -G.

AU - Pogge, R. W.

AU - Santallo, R.

AU - Abe, F.

AU - Bond, I. A.

AU - Fukui, A.

AU - Furusawa, K.

AU - Hearnshaw, J. B.

AU - Hosaka, S.

AU - Itow, Y.

AU - Kamiya, K.

AU - Korpela, A. V.

AU - Kilmartin, P. M.

AU - Horne, K.

AU - Kains, N.

AU - OGLE Collaboration

AU - μFUN Collaboration

AU - MOA Collaboration

AU - PLANET Collaboration

PY - 2009/10/1

Y1 - 2009/10/1

N2 - We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A similar to 1600 on 2008 May 30. The peak of this event exhibits both finite-source effects and terrestrial parallax, from which we determine the mass of the lens, M-l = 0.64 +/- 0.10 M-circle dot, and its distance, D-l = 4.0 +/- 0.6 kpc. We rule out Jupiter-mass planetary companions to the lens star for projected separations in the range 0.5-20 AU. More generally, we find that this event was sensitive to planets with masses as small as 0.2 M-circle dot similar or equal to 2 (MMars) with projected separations near the Einstein ring (similar to 3 AU).

AB - We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A similar to 1600 on 2008 May 30. The peak of this event exhibits both finite-source effects and terrestrial parallax, from which we determine the mass of the lens, M-l = 0.64 +/- 0.10 M-circle dot, and its distance, D-l = 4.0 +/- 0.6 kpc. We rule out Jupiter-mass planetary companions to the lens star for projected separations in the range 0.5-20 AU. More generally, we find that this event was sensitive to planets with masses as small as 0.2 M-circle dot similar or equal to 2 (MMars) with projected separations near the Einstein ring (similar to 3 AU).

KW - gravitational lensing

KW - planetary systems

KW - planetary systems: formation

KW - JOVIAN-MASS PLANET

KW - EXTRASOLAR PLANETS

KW - DETERMINISTIC MODEL

KW - PHOTOMETRY

KW - STELLAR

KW - COOL

KW - CONSTRAINTS

KW - EXOPLANETS

KW - DISCOVERY

KW - SYSTEMS

U2 - 10.1088/0004-637X/703/2/2082

DO - 10.1088/0004-637X/703/2/2082

M3 - Article

SN - 0004-637X

VL - 703

SP - 2082

EP - 2090

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

EXTREME MAGNIFICATION MICROLENSING EVENT OGLE-2008-BLG-279: STRONG LIMITS ON PLANETARY COMPANIONS TO THE LENS STAR

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Keywords

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Astrophysics in St Andrews: Astrophysics in St Andrews / SUPA (Continuan of Rolling Grant - XPP089

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