LAMOST J045019.27+394758.7, with peculiar abundances of N, Na, V, Zn, is possibly a Sculptor dwarf galaxy escapee
Meenakshi Purandardas,
Aruna Goswami,
J. Shejeelammal
et al.
Abstract:We present the results of the high-resolution (R∼60,000) spectroscopic analysis of the star LAMOSTJ045019.27+394758.7 (hereafter J045) from the list of carbon stars of LAMOST DR2. From our analysis, we find that J045 does not exhibit the spectral characteristics of carbon stars. It is found to be a metal-poor ( [Fe/H] = −1.05) giant that shows very unusual elemental abundances, particularly for N, Na, V, and Zn. J045 shows -elements (Mg, Si, Ca) with near-solar values (<[ /Fe]> = 0.09) in contrast to Galactic … Show more
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