1. Spiral-shells and nascent bipolar outflow in CIT 6: hints for an eccentric-orbit binary?
- Author
-
Francisca Kemper, Hsi-Wei Yen, Alfonso Trejo, Hyosun Kim, Sheng-Yuan Liu, Do-Young Byun, Ronny Zhao-Geisler, Tie Liu, Jongsoo Kim, Naomi Hirano, and Ronald E. Taam
- Subjects
Physics ,History ,Astronomy ,Orbital eccentricity ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Circumstellar envelope ,Astrophysics ,Submillimeter Array ,Carbon star ,Computer Science Applications ,Education ,Bipolar outflow ,Astrophysics::Solar and Stellar Astrophysics ,Outflow ,Astrophysics::Earth and Planetary Astrophysics ,Binary system ,Astrophysics::Galaxy Astrophysics ,Line (formation) - Abstract
We present the essential results pointed out in a recently published paper, Kim et al. 2015, Astrophys. J., 814, 61. The carbon star CIT 6 reveals evidences for a binary in a high-resolution CO line emission map of its circumstellar envelope taken with the Submillimeter Array. The morphology of the outflow described by the spiral-shell pattern, bipolar (or possibly multipolar) outflow, one-sided interarm gaps, and double spiral feature point to a plausible scenario that CIT 6 is a binary system in an eccentric orbit with the mass losing star evolving from the AGB.
- Published
- 2016