Bibliographic Details
| Title: |
OGLE-2016-BLG-1266: A Probable Brown-Dwarf/Planet Binary at the Deuterium Fusion Limit |
| Authors: |
Albrow, M. D., Yee, J. C., Udalski, A., Novati, S. Calchi, Carey, S., Henderson, C. B., Beichman, C., Bryden, G., Gaudi, B. S., Shvartzvald, Y., Szymanśki, M. K., Mroź, P., Skowron, J., Poleski, R., Soszynśki, I., Kozlowski, S., Pietrukowicz, ., Ulaczyk, K., Pawlak, M., Chung, S. -J., Gould, A., Han, C., Hwang, K. -H., Jung, Y. K., Ryu, Y. -H., Shin, I. -G., Zhu, W., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W. |
| Publication Year: |
2018 |
| Collection: |
Astrophysics |
| Subject Terms: |
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics |
| More Details: |
We report the discovery, via the microlensing method, of a new very-low-mass binary system. By combining measurements from Earth and from the Spitzer telescope in Earth-trailing orbit, we are able to measure the microlensing parallax of the event, and find that the lens likely consists of an $(12.0 \pm 0.6) M_{\rm J}$ + $(15.7 \pm 1.5) M_{\rm J}$ super-Jupiter / brown-dwarf pair. The binary is located at a distance of $(3.08 \pm 0.18)$ kpc in the Galactic Plane, and the components have a projected separation of $(0.43 \pm 0.03)$ AU. Two alternative solutions with much lower likelihoods are also discussed, an 8- and 6-$M_{\rm J}$ model and a 90- and 70-$M_{\rm J}$ model. Although disfavored at the 3-$\sigma$ and 5-$\sigma$ levels, these alternatives cannot be rejected entirely. We show how the more-massive of these models could be tested with future direct imaging.
Comment: 23 pages, 7 figures, submitted to AAS Journals |
| Document Type: |
Working Paper |
| DOI: |
10.3847/1538-4357/aabf3f |
| Access URL: |
http://arxiv.org/abs/1802.09563 |
| Accession Number: |
edsarx.1802.09563 |
| Database: |
arXiv |
