RED NOISE VERSUS PLANETARY INTERPRETATIONS IN THE MICROLENSING EVENT OGLE-2013-BLG-446

E. Bachelet; D. M. Bramich; C. Han; J. Greenhill; R. A. Street; A. Gould; G. D'Ago; K. AlSubai; M. Dominik; R. Figuera Jaimes; K. Horne; M. Hundertmark; N. Kains; C. Snodgrass; I. A. Steele; Y. Tsapras; M. D. Albrow; V. Batista; J.-P. Beaulieu; D. P. Bennett; S. Brillant; J. A. R. Caldwell; A. Cassan; A. Cole; C. Coutures; S. Dieters; D. Dominis Prester; J. Donatowicz; P. Fouqué; K. Hill; J.-B. Marquette; J. Menzies; C. Pere; C. Ranc; J. Wambsganss; D. Warren; L. Andrade de Almeida; J.-Y. Choi; D. L. DePoy; S. Dong; L.-W. Hung; K.-H. Hwang; F. Jablonski; Y. K. Jung; S. Kaspi; N. Klein; C.-U. Lee; D. Maoz; J. A. Muñoz; D. Nataf; H. Park; R. W. Pogge; D. Polishook; I.-G. Shin; A. Shporer; J. C. Yee; F. Abe; A. Bhattacharya; I. A. Bond; C. S. Botzler; M. Freeman; A. Fukui; Y. Itow; N. Koshimoto; C. H. Ling; K. Masuda; Y. Matsubara; Y. Muraki; K. Ohnishi; L. C. Philpott; N. Rattenbury; To Saito; D. J. Sullivan; T. Sumi; D. Suzuki; P. J. Tristram; A. Yonehara; V. Bozza; S. Calchi Novati; S. Ciceri; P. Galianni; S.-H. Gu; K. Harpsøe; T. C. Hinse; U. G. Jørgensen; D. Juncher; H. Korhonen; L. Mancini; C. Melchiorre; A. Popovas; A. Postiglione; M. Rabus; S. Rahvar; R. W. Schmidt; G. Scarpetta; J. Skottfelt; John Southworth; An Stabile; J. Surdej; X.-B. Wang; O. Wertz; RoboNET Collaboration

doi:10.1088/0004-637X/812/2/136

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RED NOISE VERSUS PLANETARY INTERPRETATIONS IN THE MICROLENSING EVENT OGLE-2013-BLG-446

Journal article

Peer reviewed

RED NOISE VERSUS PLANETARY INTERPRETATIONS IN THE MICROLENSING EVENT OGLE-2013-BLG-446

E. Bachelet, D. M. Bramich, C. Han, J. Greenhill, R. A. Street, A. Gould, G. D'Ago, K. AlSubai, M. Dominik, R. Figuera Jaimes, …

The Astrophysical journal, Vol.812(2), p.136

10/20/2015

DOI: 10.1088/0004-637X/812/2/136

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Abstract

ABSTRACT For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensing data sets using the microlensing event OGLE-2013-BLG-0446 as a case study. The event was observed from multiple sites around the world and its high magnification (Amax ∼ 3000) allowed us to investigate the effects of terrestrial and annual parallax. Real-time modeling of the event while it was still ongoing suggested the presence of an extremely low-mass companion (∼3M⊕) to the lensing star, leading to substantial follow-up coverage of the light curve. We test and compare different models for the light curve and conclude that the data do not favor the planetary interpretation when systematic errors are taken into account.

gravitational lensing: micro

planetary systems

techniques: photometric

Details

Title: Subtitle: RED NOISE VERSUS PLANETARY INTERPRETATIONS IN THE MICROLENSING EVENT OGLE-2013-BLG-446
Creators: E. Bachelet - Qatar Environment and Energy Research Institute
D. M. Bramich - Qatar Environment and Energy Research Institute
C. Han - Chungbuk National University
J. Greenhill - University of Tasmania
R. A. Street - Las Cumbres Observatory Global Telescope Network
A. Gould - The Ohio State University
G. D'Ago - Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
K. AlSubai - Qatar Foundation
M. Dominik - University of St Andrews
R. Figuera Jaimes - University of St Andrews
K. Horne - University of St Andrews
M. Hundertmark - University of St Andrews
N. Kains - European Southern Observatory
C. Snodgrass - The Open University
I. A. Steele - Liverpool John Moores University
Y. Tsapras - Queen Mary University of London
M. D. Albrow - University of Canterbury
V. Batista - The Ohio State University
J.-P. Beaulieu - Centre de Gestion Scientifique
D. P. Bennett - University of Notre Dame
S. Brillant - European Southern Observatory
J. A. R. Caldwell - Spur (Czechia)
A. Cassan - Centre de Gestion Scientifique
A. Cole - University of Tasmania
C. Coutures - Centre de Gestion Scientifique
S. Dieters - University of Tasmania
D. Dominis Prester - University of Tasmania
J. Donatowicz - TU Wien
P. Fouqué - Université Fédérale de Toulouse Midi-Pyrénées
K. Hill - University of Tasmania
J.-B. Marquette - Centre de Gestion Scientifique
J. Menzies - Astronomical Observatory
C. Pere - Centre de Gestion Scientifique
C. Ranc - Institut dAstrophysique de Paris UPMC-CNRS, UMR 7095, 98bis boulevard Arago, F-75014 Paris, France
J. Wambsganss - Zentrum für Astronomie der Universität Heidelberg Astronomisches Rechen-Institut (ARI), (ZAH), Mönchhofstr. 12-14, D-69120 Heidelberg, Germany
D. Warren - University of Tasmania
L. Andrade de Almeida - Departamento de Astronomía y Astrofísica , Universidad de Valencia, E-46100 Burjassot, Valencia, Spain
J.-Y. Choi - Chungbuk National University
D. L. DePoy - Texas A&M University
S. Dong - The Ohio State University
L.-W. Hung - The Ohio State University
K.-H. Hwang - Chungbuk National University
F. Jablonski - Instituto Nacional de Pesquisas Espaciais
Y. K. Jung - Chungbuk National University
S. Kaspi - Tel Aviv University
N. Klein - Tel Aviv University
C.-U. Lee - Korea Astronomy and Space Science Institute
D. Maoz - Tel Aviv University
J. A. Muñoz - Instituto Nacional de Pesquisas Espaciais
D. Nataf - The Ohio State University
H. Park - Chungbuk National University
R. W. Pogge - The Ohio State University
D. Polishook - Tel Aviv University
I.-G. Shin - Chungbuk National University
A. Shporer - University of California, Santa Barbara
J. C. Yee - The Ohio State University
F. Abe - University of Auckland
A. Bhattacharya - University of Notre Dame
I. A. Bond - Nagoya University
C. S. Botzler - National Astronomical Observatory of Japan
M. Freeman - National Institutes of Natural Sciences
A. Fukui - National Institute of Technology, Nagano College
Y. Itow - University of Auckland
N. Koshimoto - University of Notre Dame
C. H. Ling - Nagoya University
K. Masuda - University of Auckland
Y. Matsubara - University of Auckland
Y. Muraki - University of Auckland
K. Ohnishi - Vaughn College of Aeronautics and Technology
L. C. Philpott - Victoria University of Wellington
N. Rattenbury - Victoria University School of Chemical and Physical Sciences, Wellington, New Zealand
To Saito - Mt. John University Observatory , P.O. Box 56, Lake Tekapo 8770, New Zealand
D. J. Sullivan - Kyoto Sangyo University
T. Sumi - The University of Osaka
D. Suzuki - Massey University
P. J. Tristram - Mt. John University Observatory , P.O. Box 56, Lake Tekapo 8770, New Zealand
A. Yonehara - Kyoto Sangyo University
V. Bozza - University of Salerno
S. Calchi Novati - Istituto Internazionale per gli Alti Studi Scientifici (IIASS) , I-84019 Vietri Sul Mare (SA), Italy
S. Ciceri - Max Planck Society
P. Galianni - University of St Andrews
S.-H. Gu - Chinese Academy of Sciences
K. Harpsøe - University of Copenhagen
T. C. Hinse - Korea Astronomy and Space Science Institute
U. G. Jørgensen - University of Copenhagen
D. Juncher - University of Copenhagen
H. Korhonen - University of Copenhagen
L. Mancini - Max Planck Society
C. Melchiorre - University of Salerno
A. Popovas - University of Copenhagen
A. Postiglione - Roma Tre University
M. Rabus - Max Planck Society
S. Rahvar - Sharif University of Technology
R. W. Schmidt - Heidelberg University
G. Scarpetta - University of Salerno
J. Skottfelt - University of Copenhagen
John Southworth - Keele University
An Stabile - Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
J. Surdej - Université de Liège Institut d'Astrophysique et de Géophysique, 4000 Liège, Belgium
X.-B. Wang - Chinese Academy of Sciences
O. Wertz - University of Liège
RoboNET Collaboration
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.812(2), p.136
DOI: 10.1088/0004-637X/812/2/136
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: The American Astronomical Society
Number of pages: 11
Alternative title: RED NOISE VERSUS PLANETARY INTERPRETATIONS IN THE MICROLENSING EVENT OGLE-2013-BLG-446
Language: English
Date published: 10/20/2015
Academic Unit: Physics and Astronomy
Record Identifier: 9984701832002771

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