Article (Scientific journals)
MASS MEASUREMENTS of ISOLATED OBJECTS from SPACE-BASED MICROLENSING
Zhu, W.; Calchi Novati, S.; Gould, A. et al.
2016In Astrophysical Journal, 825 (1)
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Keywords :
Microlensing; OGLE-2015-BLG-1268
Abstract :
[en] We report on the mass and distance measurements of two single-lens events from the 2015 Spitzer microlensing campaign. With both finite-source effect and microlens parallax measurements, we find that the lens of OGLE-2015-BLG-1268 is very likely a brown dwarf (BD). Assuming that the source star lies behind the same amount of dust as the Bulge red clump, we find the lens is a 45 ±7 BD at 5.9 ±1.0 kpc. The lens of of the second event, OGLE-2015-BLG-0763, is a 0.50 ±0.04 star at 6.9 ±1.0 kpc. We show that the probability to definitively measure the mass of isolated microlenses is dramatically increased once simultaneous ground- and space-based observations are conducted. © 2016. The American Astronomical Society. All rights reserved.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Zhu, W.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States
Calchi Novati, S.;  NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA, United States, Dipartimento di Fisica E. R. Caianiello, Universitá di Salerno, Via Giovanni Paolo II, Fisciano (SA), Italy, Istituto Internazionale per Gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, Vietri sul Mare (SA), Italy
Gould, A.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States
Udalski, A.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Han, C.;  Department of Physics, Chungbuk National University, Cheongju, South Korea
Shvartzvald, Y.;  Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States, School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel
Ranc, C.;  Sorbonne Universités, UPMC Univ Paris 6 et CNRS, UMR 7095, Institut d'Astrophysique de Paris, 98 bis bd Arago, Paris, France
Jorgensen, U. G.;  Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen, Denmark
Poleski, R.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States, Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Bozza, V.;  Dipartimento di Fisica E. R. Caianiello, Universitá di Salerno, Via Giovanni Paolo II, Fisciano (SA), Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy
Beichman, C.;  NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA, United States
Bryden, G.;  Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States
Carey, S.;  NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA, United States
Gaudi, B. S.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States
Henderson, C. B.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States
Pogge, R. W.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States
Porritt, I.;  Turitea Observatory, Palmerston North, New Zealand
Wibking, B.;  Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH, United States
Yee, J. C.;  Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA, United States
Pawlak, M.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Szymański, M. K.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Skowron, J.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Mróz, P.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Kozłowski, S.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Wyrzykowski, Ł.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Pietrukowicz, P.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Pietrzyński, G.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Soszyński, I.;  Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, Poland
Ulaczyk, K.;  Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, United Kingdom
Choi, J.-Y.;  Department of Physics, Chungbuk National University, Cheongju, South Korea
Park, H.;  Department of Physics, Chungbuk National University, Cheongju, South Korea
Jung, Y. K.;  Department of Physics, Chungbuk National University, Cheongju, South Korea
Shin, I.-G.;  Department of Physics, Chungbuk National University, Cheongju, South Korea
Albrow, M. D.;  University of Canterbury, Department of Physics and Astronomy, Private Bag 4800, Christchurch, New Zealand
Park, B.-G.;  Korea Astronomy and Space Science Institute, Daejon, South Korea
Kim, S.-L.;  Korea Astronomy and Space Science Institute, Daejon, South Korea
Lee, C.-U.;  Korea Astronomy and Space Science Institute, Daejon, South Korea
Cha, S.-M.;  Korea Astronomy and Space Science Institute, Daejon, South Korea, School of Space Research, Kyung Hee University, Yongin, South Korea
Kim, D.-J.;  Korea Astronomy and Space Science Institute, Daejon, South Korea, School of Space Research, Kyung Hee University, Yongin, South Korea
Lee, Y.;  Korea Astronomy and Space Science Institute, Daejon, South Korea, School of Space Research, Kyung Hee University, Yongin, South Korea
Friedmann, M.;  School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel
Kaspi, S.;  School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel
Maoz, D.;  School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel
Hundertmark, M.;  Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen, Denmark
Street, R. A.;  Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Goleta, CA, United States
Tsapras, Y.;  Astronomisches Rechen-Institut, Zentrum für Astronomie, Universitat Heidelberg (ZAH), Heidelberg, Germany
Bramich, D. M.;  Qatar Environment and Energy Research Institute (QEERI), HBKU, Qatar Foundation, Doha, Qatar
Cassan, A.;  Sorbonne Universités, UPMC Univ Paris 6 et CNRS, UMR 7095, Institut d'Astrophysique de Paris, 98 bis bd Arago, Paris, France
Dominik, M.;  SUPA, School of Physics and Astronomy, University of St.Andrews, North-Haugh-St.Andrews, United Kingdom
Bachelet, E.;  Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Goleta, CA, United States, Qatar Environment and Energy Research Institute (QEERI), HBKU, Qatar Foundation, Doha, Qatar
Dong, S.;  Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Road 5, Hai Dian District, Beijing, China
Jaimes, R. F.;  SUPA, School of Physics and Astronomy, University of St.Andrews, North-Haugh-St.Andrews, United Kingdom, European Southern Observatory, Karl-Schwarzschild Straße 2, Garching bei München, Germany
Horne, K.;  SUPA, School of Physics and Astronomy, University of St.Andrews, North-Haugh-St.Andrews, United Kingdom
Mao, S.;  National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
Menzies, J.;  South African Astronomical Observatory, P.O. Box 9, Observatory, South Africa
Schmidt, R.;  Astronomisches Rechen-Institut, Zentrum für Astronomie, Universitat Heidelberg (ZAH), Heidelberg, Germany
Snodgrass, C.;  Planetary and Space Sciences, Department of Physical Sciences, Open University, Milton Keynes, United Kingdom
Steele, I. A.;  Astrophysics Research Institute, Liverpool John Moores University, Liverpool, United Kingdom
Wambsganss, J.;  Astronomisches Rechen-Institut, Zentrum für Astronomie, Universitat Heidelberg (ZAH), Heidelberg, Germany
Skottfelt, J.;  Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen, Denmark, Centre for Electronic Imaging, Department of Physical Sciences, Open University, Milton Keynes, United Kingdom
Andersen, M. I.;  Niels Bohr Institute, University of Copenhagen, Juliane Mariesvej 30, Copenhagen ø, Denmark
Burgdorf, M. J.;  Meteorologisches Institut, Universität Hamburg, Bundesstraße 55, Hamburg, Germany
Ciceri, S.;  Max Planck Institute for Astronomy, Königstuhl 17, Heidelberg, Germany
D'Ago, G.;  Istituto Internazionale per Gli Alti Studi Scientifici (IIASS), Via G. Pellegrino 19, Vietri sul Mare (SA), Italy
Evans, D. F.;  Astrophysics Group, Keele University, Staffordshire, United Kingdom
Gu, S.-H.;  Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
Hinse, T. C.;  Korea Astronomy and Space Science Institute, Daejon, South Korea
Kerins, E.;  Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, United Kingdom
Korhonen, H.;  Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen, Denmark, Finnish Centre for Astronomy with ESO (FINCA), Väisäläntie 20, Piikkiö, Finland
Kuffmeier, M.;  Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen, Denmark
Mancini, L.;  Max Planck Institute for Astronomy, Königstuhl 17, Heidelberg, Germany
Peixinho, N.;  Unidad de Astronomía, Fac. de Ciencias Básicas, Universidad de Antofagasta, Avda. U. de Antofagasta 02800, Antofagasta, Chile, CITEUC - Centre for Earth and Space Science Research, University of Coimbra, Observatório Astronómico da Universidade de Coimbra, Coimbra, Portugal
Popovas, A.;  Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen, Øster Voldgade 5, Copenhagen, Denmark
Rabus, M.;  Instituto de Astrofísica, Facultad de Física Pontificia, Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
Rahvar, S.;  Department of Physics, Sharif University of Technology, P.O. Box 11155, Tehran, Iran
Tronsgaard, R.;  Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, Aarhus C, Denmark
Scarpetta, G.;  Dipartimento di Fisica E. R. Caianiello, Universitá di Salerno, Via Giovanni Paolo II, Fisciano (SA), Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy
Southworth, J.;  Astrophysics Group, Keele University, Staffordshire, United Kingdom
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Essen, C. V.;  Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, Aarhus C, Denmark
Wang, Y.-B.;  Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
Wertz, O.;  Institut d'Astrophysique et de Géophysique, Allée du 6 Aout 17, Liege, Belgium
More authors (72 more) Less
Language :
English
Title :
MASS MEASUREMENTS of ISOLATED OBJECTS from SPACE-BASED MICROLENSING
Publication date :
2016
Journal title :
Astrophysical Journal
ISSN :
0004-637X
eISSN :
1538-4357
Publisher :
Institute of Physics Publishing
Volume :
825
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
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