Volume 520, September-October 2010
|Number of page(s)||3|
|Section||Stellar structure and evolution|
|Published online||08 October 2010|
K 3–22: a D-type symbiotic star*
Instituto de Astrofísica de Canarias, 38200 La Laguna,
Tenerife, Spain e-mail: firstname.lastname@example.org
2 Departamento de Astrofísica, Universidad de La Laguna, 38205 La Laguna, Tenerife, Spain
Accepted: 1 September 2010
A goal of the IPHAS survey is to determine the frequency and nature of emission-line sources in the Galactic plane. According to our selection criteria, K 3–22 is a candidate symbiotic star, but it was previously classified as a planetary nebula. To determine its nature, we acquired a low-resolution optical spectrum of K 3–22. Our analysis of our spectroscopy demonstrates that K 3–22 is indeed a D-type symbiotic star, because of its high excitation nebular spectrum and the simultaneous presence of Raman-scattered O vi emission at 6825 Å and 7082 Å, which is detected primarily in symbiotic stars.
Key words: binaries: symbiotic / planetary nebulae: general
Based on observations obtained at the 2.5 m INT telescope of the Isaac Newton Group of Telescopes in the Spanish Observatorio del Roque de Los Muchachos of the Instituto de Astrofísica de Canarias. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
© ESO, 2010
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