Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path toward Breaking Strong Microlens Degeneracies
Research output: Contribution to journal › Journal article › Research › peer-review
Spitzer 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.
Original language | English |
---|---|
Article number | 79 |
Journal | The Astrophysical Journal |
Volume | 820 |
Issue number | 1 |
ISSN | 0004-637X |
DOIs | |
Publication status | Published - 1 Mar 2016 |
- binaries: general, Galaxy: bulge, gravitational lensing: micro, planets and satellites: detection, space vehicles
Research areas
ID: 170454403