NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path toward Breaking Strong Microlens DegeneraciesSpitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive out of an initial set of 32 local minima in the parameter space. These models clearly indicate that the lens is a stellar binary system possibly located within the bulge of our Galaxy, ruling out the planetary alternative. We argue that several types of discrete degeneracies can be broken via such space-based parallax observations.
Document ID
20170002710
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Bozza, V.
(Universita degli Studi di Salerno Italy)
Shvartzvald, Y.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Udalski, A.
(Warsaw Univ. Warsaw, Poland)
Novati, S.Calchi
(California Inst. of Tech. Pasadena, CA, United States)
Bond, I. A.
(Massey University Auckland Auckland, New Zealand)
Han, C.
(Chungbuk National Univ. Korea, Republic of)
Hundertmark, M.
(Copenhagen Univ. Denmark)
Poleski, R.
(Ohio State Univ. Columbus, OH, United States)
Pawlak, M.
(Warsaw Univ. Warsaw, Poland)
Szymanski, M. K.
(Warsaw Univ. Warsaw, Poland)
Skowron, J.
(Warsaw Univ. Warsaw, Poland)
Mroz, P.
(Warsaw Univ. Warsaw, Poland)
Kozłowski, S.
(Warsaw Univ. Warsaw, Poland)
Wyrzykowski, L.
(Warsaw Univ. Warsaw, Poland)
Pietrukowicz, P.
(Warsaw Univ. Warsaw, Poland)
Soszynski, I.
(Warsaw Univ. Warsaw, Poland)
Ulaczyk, K.
(Warwick Univ. Coventry, United Kingdom)
Beichman, C.
(California Inst. of Tech. Pasadena, CA, United States)
Bryden, G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Carey, S.
(California Inst. of Tech. Pasadena, CA, United States)
Fausnaugh, M.
(Ohio State Univ. Columbus, OH, United States)
Gaudi, B. S.
(Ohio State Univ. Columbus, OH, United States)
Gould, A.
(Ohio State Univ. Columbus, OH, United States)
Barry, Richard K.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Bennett, D. P.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
March 30, 2017
Publication Date
March 21, 2016
Publication Information
Publication: The Astrophysical Journal
Publisher: The American Astronomical Society
Volume: 820
Issue: 1
ISSN: 2041-8205
e-ISSN: 2041-8213
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN48032
GSFC-E-DAA-TN40854
Funding Number(s)
CONTRACT_GRANT: NNG17PT01A
Distribution Limits
Public
Copyright
Other
Keywords
Spitzer microlensing parallax observations

Available Downloads

There are no available downloads for this record.
No Preview Available