التفاصيل البيبلوغرافية
| العنوان: |
SPITZER AS A MICROLENS PARALLAX SATELLITE: MASS AND DISTANCE MEASUREMENTS OF BINARY LENS SYSTEM OGLE-2014-BLG-1050L. |
| المؤلفون: |
Wei Zhu (祝伟), A. Udalski, A. Gould, M. Dominik, V. Bozza, C. Han, J. C. Yee, S. Calchi Novati, C. A. Beichman, S. Carey, R. Poleski, J. Skowron, S. Kozłowski, P. Mróz, P. Pietrukowicz, G. Pietrzyński, M. K. Szymański, I. Soszyński, K. Ulaczyk, Ł. Wyrzykowski |
| المصدر: |
Astrophysical Journal; 5/20/2015, Vol. 805 Issue 1, p1-1, 1p |
| مصطلحات موضوعية: |
BINARY stars, MICROLENSING (Astrophysics), HIGH resolution imaging, STELLAR mass, GEOCENTRIC model (Astronomy), GEOSYNCHRONOUS orbits |
| مستخلص: |
We report the first mass and distance measurements of a caustic-crossing binary system OGLE-2014-BLG-1050 L using the space-based microlens parallax method. Spitzer captured the second caustic crossing of the event, which occurred ∼10 days before that seen from Earth. Due to the coincidence that the source-lens relative motion was almost parallel to the direction of the binary-lens axis, the fourfold degeneracy, which was known before only to occur in single-lens events, persists in this case, leading to either a lower-mass (0.2 and 0.07 ) binary at ∼1.1 kpc or a higher-mass (0.9 and 0.35 ) binary at ∼3.5 kpc. However, the latter solution is strongly preferred for reasons including blending and lensing probability. OGLE-2014-BLG-1050 L demonstrates the power of microlens parallax in probing stellar and substellar binaries. [ABSTRACT FROM AUTHOR] |
|
Copyright of Astrophysical Journal is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
