Component-resolved near-infrared spectra of the (22) Kalliope system
Abstract
We observed (22) Kalliope and its companion Linus with the integral-field spectrograph OSIRIS, which is coupled to the adaptive optics system at the W.M. Keck 2 telescope on March 25, 2008. We present, for the first time, component-resolved spectra acquired simultaneously in each of the Zbb (1-1.18 μm), Jbb (1.18-1.42 μm), Hbb (1.47-1.80 μm), and Kbb (1.97-2.38 μm) bands. The spectra of the two bodies are remarkably similar and imply that both bodies were formed at the same time from the same material; such as via incomplete re-accretion after a major impact on the precursor body.
- Publication:
-
Icarus
- Pub Date:
- December 2009
- DOI:
- 10.1016/j.icarus.2009.07.002
- arXiv:
- arXiv:0907.2220
- Bibcode:
- 2009Icar..204..574L
- Keywords:
-
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- 20 pages, 5 figures, 1 table. Accepted for publication in Icarus