K 3-22: a D-type symbiotic star

Abstract

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 and 7082 angstrom, which is detected primarily in symbiotic stars.

3 pages, 1 figure. Accepted for publication on Astronomy and Astrophysics

References in corpus (3)

• IPHAS and the symbiotic stars. I. Selection method and first discoveries
• IPHAS and the symbiotic stars. II. New discoveries and a sample of the most common mimics
• Hen 2-104: A close-up look at the Southern Crab

Cited by in corpus (6)

• A census of symbiotic stars in the 2MASS, WISE and Gaia surveys
• Symbiotic stars and other Halpha emission line stars towards the Galactic Bulge
• Identification of new Galactic symbiotic stars with SALT. I. Initial discoveries and other emission line objects
• The new carbon symbiotic star IPHAS J205836.43+503307.2
• Mapping H$\alpha$-Excess Candidate Point Sources in the Southern Hemisphere Using S-PLUS Data
• Studies of a possible new Herbig Ae/Be star in the open cluster NGC 7380