FN8-23-7179: A Low-temperature Circumstellar Shell?

• Published in: Research notes of the AAS Vol. 6; no. 12; pp. 278 - 277
• Main Authors: Moody, J. Ward, Steele, Rochelle J.
• Format: Journal Article
• Language: English
• Published: The American Astronomical Society 23.12.2022
• Subjects: Circumstellar shells; Emission line stars; Stellar spectral lines
• ISSN: 2515-5172; 2515-5172
• DOI: 10.3847/2515-5172/acad7c

Abstract In the course of a narrow-band imaging survey for dwarf emission-line galaxies in a nearby void, we serendipitously discovered a low-excitation nebula that fits the profile of a shell surrounding a low-temperature star. The star has a parallax of 0.47 ± 0.34 mas with a most likely distance of 1686 pc. It has apparent magnitudes in r ′ and g of 18.5 and 19.54, absolute magnitudes M r ′ and M g of 7.4 and 8.41, and a redshift of 140 km −1 . The color and magnitude are consistent with a K6V dwarf. A lack of forbidden emission suggests that the nebular electron temperature is < 3500° K.