2006/03/01 by Chih Hao Hsia, Wing Ip, Hsia, Chih Hao +4
Physics and Astronomy · #Adaptation and Self-Organizing Systems (nlin.AO) #Astro and Planetary Science #Astronomy and Astrophysical Research #FOS: Physical sciences #Stellar, planetary, and galactic studies #nlin.AO
paper · pdf · doi:10.48550/arxiv.nlin/0603006
This paper has been withdrawn
openalex publication_date 2006/03/01 · arxiv created 2006/03/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Young planetary nebulae play an important role in stellar evolution when intermediate- to low-mass stars (0.8 ~ 8 M) evolve from the proto-planetary nebulae phase to the planetary nebulae phase. Many young planetary nebulae display distinct bipolar structures as they evolve away from the proto-planetary nebulae phase. One possible cause of their bipolarity could be due to a binary origin of its energy source. Here we report our detailed investigation of the young planetary nebula, Hubble 12, which is well-known for its extended hourglass-like envelope. We present evidence with time-series photometric observations the existence of an eclipsing binary at the center of Hubble 12. Low-resolution spectra of the central source show, on the other hand, absorption features such as CN, G-band & Mg b, which can be suggestive of a low-mass nature of the secondary component.