An Isolated Microlens Observed from K2, Spitzer, and Earth
Article
Article Title | An Isolated Microlens Observed from K2, Spitzer, and Earth |
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ERA Journal ID | 45091 |
Article Category | Article |
Authors | Zhu, Wei (Author), Udalski, A. (Author), Huang, C. X. (Author), Calchi Novati, S. (Author), Sumi, T. (Author), Poleski, R. (Author), Skowron, J. (Author), Mroz, P. (Author), Szymanski, M. K. (Author), Soszynski, I. (Author), Pietrukowicz, P. (Author), Kozlowski, S. (Author), Ulaczyk, K. (Author), Pawlak, M. (Author), Beichman, C. (Author), Bryden, G. (Author), Carey, S. (Author), Gaudi, B. S. (Author), Gould, A. (Author), Henderson, C. B. (Author), Shvartzvald, Y. (Author), Yee, J. C. (Author), Bond, I. A. (Author), Bennett, D. P. (Author), Suzuki, D. (Author), Rattenbury, N. J. (Author), Koshimoto, N. (Author), Abe, F. (Author), Asakura, Y. (Author), Barry, R. K. (Author), Bhattacharya, A. (Author), Donachie, M. (Author), Evans, P. (Author), Fukui, A. (Author), Hirao, Y. (Author), Itow, Y. (Author), Kawasaki, K. (Author), Li, M. C. A. (Author), Ling, C. H. (Author), Masuda, K. (Author), Matsubara, Y. (Author), Miyazaki, S. (Author), Munakata, H. (Author), Muraki, Y. (Author), Nagakane, M. (Author), Ohnishi, K. (Author), Ranc, C. (Author), Saito, To. (Author), Sharan, A. (Author), Sullivan, D. J. (Author), Tristram, P. J. (Author), Yamada, T. (Author) and Yonehara, A. (Author) |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 849 (2), pp. 1-6 |
Article Number | L31 |
Number of Pages | 6 |
Year | 2017 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/2041-8213/aa93fa |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/2041-8213/aa93fa |
Abstract | We present the result of microlensing event MOA-2016-BLG-290, which received observations from the two-wheel Kepler (K2), Spitzer, as well as ground-based observatories. A joint analysis of data from K2 and the ground leads to two degenerate solutions of the lens mass and distance. This degeneracy is effectively broken once the (partial) Spitzer light curve is included. Altogether, the lens is found to be an extremely low-mass star or brown dwarf () located in the Galactic bulge ( kpc). MOA-2016-BLG-290 is the first microlensing event for which we have signals from three well-separated (∼1 au) locations. It demonstrates the power of two-satellite microlensing experiment in reducing the ambiguity of lens properties, as pointed out independently by S. Refsdal and A. Gould several decades ago. |
Keywords | gravitational lensing: micro; methods: data analysis; parallaxes; stars: fundamental parameters; techniques: photometric; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Instrumentation and Methods for Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | For access to this article, please click on the URL link provided. |
Byline Affiliations | Ohio State University, United States |
University of Warsaw, Poland | |
Massachusetts Institute of Technology, United States | |
California Institute of Technology (Caltech), United States | |
Osaka University, Japan | |
National Aeronautics and Space Administration (NASA), United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Massey University, New Zealand | |
NASA Goddard Space Flight Center, United States | |
Japan Aerospace Exploration Agency, Japan | |
University of Auckland, New Zealand | |
Nagoya University, Japan | |
Okayama Astrophysical National Astronomical Observatory, Japan | |
National Institute of Technology Nagano, Japan | |
Tokyo Metropolitan University, Japan | |
Victoria University of Wellington, New Zealand | |
University of Canterbury, New Zealand | |
Kyoto Sangyo University, Japan | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q722v/an-isolated-microlens-observed-from-k2-spitzer-and-earth
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