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Extreme Magnification Microlensing Event OGLE-2008-BLG-279: Strong Limits on Planetary Companions to the Lens Star

Authors :
J. C. Yee
A. Udalski
T. Sumi
Subo Dong
S. Kozłowski
J. C. Bird
A. Cole
D. Higgins
J. McCormick
L. A. G. Monard
D. Polishook
A. Shporer
O. Spector
M. K. Szymański
M. Kubiak
G. Pietrzyński
I. Soszyński
O. Szewczyk
K. Ulaczyk
Ł. 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
W. Lin
C. H. Ling
S. Makita
K. Masuda
Y. Matsubara
N. Miyake
Y. Muraki
M. Nagaya
K. Nishimoto
K. Ohnishi
Y. C. Perrott
N. J. Rattenbury
T. Sako
To. Saito
L. Skuljan
D. J. Sullivan
W. L. Sweatman
P. J. Tristram
P. C. M. Yock
M. D. Albrow
V. Batista
P. Fouqué
J. -P. Beaulieu
D. P. Bennett
A. Cassan
J. Comparat
C. Coutures
S. Dieters
J. Greenhill
K. Horne
N. Kains
D. Kubas
R. Martin
J. Menzies
J. Wambsganss
A. Williams
M. Zub
Department of Astronomy (Ohio State University)
Ohio State University [Columbus] (OSU)
Laboratoire Astrophysique de Toulouse-Tarbes (LATT)
Université Toulouse III - Paul Sabatier (UT3)
Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP)
Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3)
Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Institut d'Astrophysique de Paris (IAP)
Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Astronomische Rechen-Institut [Heidelberg] (ARI)
Zentrum für Astronomie der Universität Heidelberg (ZAH)
Universität Heidelberg [Heidelberg] = Heidelberg University-Universität Heidelberg [Heidelberg] = Heidelberg University
ANR-06-BLAN-0416,HOLMES,HOLMES (Hunting cOol Low Mass Extrasolar PlanetS)(2006)
Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP)
Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)
Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Universität Heidelberg [Heidelberg]-Universität Heidelberg [Heidelberg]
Source :
The Astrophysical Journal, The Astrophysical Journal, 2009, 703, pp.2082-2090. ⟨10.1088/0004-637X/703/2/2082⟩, The Astrophysical Journal, American Astronomical Society, 2009, 703, pp.2082-2090. ⟨10.1088/0004-637X/703/2/2082⟩, Astrophysical Journal, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
Publication Year :
2009
Publisher :
HAL CCSD, 2009.

Abstract

We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A ~ 1600 on 30 May 2008. 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_Sun, and its distance, D_l = 4.0 +/- 0.6. 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_Earth ~= 2 M_Mars with projected separations near the Einstein ring (~3 AU).<br />Comment: 25 pages, 7 figures, submitted to ApJ

Subjects

Subjects :
Einstein ring
[PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
gravitational lensing
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Magnification
FOS: Physical sciences
Astrophysics
Gravitational microlensing
01 natural sciences
law.invention
symbols.namesake
law
Planet
0103 physical sciences
010306 general physics
010303 astronomy & astrophysics
planetary systems
Physics
Earth and Planetary Astrophysics (astro-ph.EP)
Astronomy and Astrophysics
Mars Exploration Program
planetary systems: formation
Lens (optics)
13. Climate action
Space and Planetary Science
symbols
Parallax
Event (particle physics)
Astrophysics - Earth and Planetary Astrophysics

Details

Language :
English
ISSN :
0004637X and 15384357
Database :
OpenAIRE
Journal :
The Astrophysical Journal, The Astrophysical Journal, 2009, 703, pp.2082-2090. ⟨10.1088/0004-637X/703/2/2082⟩, The Astrophysical Journal, American Astronomical Society, 2009, 703, pp.2082-2090. ⟨10.1088/0004-637X/703/2/2082⟩, Astrophysical Journal, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
Accession number :
edsair.doi.dedup.....a7a8eb27c07406e4d3625336732634bf
Full Text :
https://doi.org/10.1088/0004-637X/703/2/2082⟩
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