TL;DR
This study identifies 209 O-type stars in LAMOST data, including 135 new discoveries, providing detailed classifications and binary status, thus expanding the catalog of these massive stars.
Contribution
The paper presents a large sample of newly identified O-type stars from LAMOST, including detailed spectral classifications and binary star information, based on low- and median-resolution spectra.
Findings
209 O-type stars identified in LAMOST data
135 are newly discovered, with 94 first-time entries
Includes various spectral types and binary star classifications
Abstract
This paper reports 209 O-type stars found with LAMOST. All 135 new O-type stars discovered so far with LAMOST so far are given. Among them, 94 stars are firstly presented in this sample. There are 1 Iafpe star, 5 Onfp stars, 12 Oe stars, 1 Ofc stars, 3 ON stars, 16 double-lined spectroscopic binaries, and 33 single-lined spectroscopic binaries. All O-type stars are determined based on LAMOST low-resolution spectra (R ~ 1800), with their LAMOST median-resolution spectra (R~7500) as supplements.
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