2016/04/08 by Po-Chieh Yu, Po-Chieh Yu(俞伯傑), Chien-Cheng Lin(林建爭) +30 · 4 citations
Physics and Astronomy · #Astronomical Objects #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Open cluster #Photometry (optics) #Spectrograph #Star cluster #Stars #Stellar classification #Stellar, planetary, and galactic studies #Telescope #astro-ph.SR
paper · pdf · doi:10.3847/0004-6256/151/5/121
published in The Astronomical Journal 151(5), 121 (Institute of Physics) · 11 pages, 8 figures, AJ in press
arxiv created 2016/04/08 · openalex publication_date 2016/04/20 · arxiv updated 2016/04/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
ABSTRACT We report the discovery of two new Be stars, and re-identify one known Be star in the open cluster NGC 6830. Eleven H α emitters were discovered using the H α imaging photometry of the Palomar Transient Factory Survey. Stellar membership of the candidates was verified with photometric and kinematic information using 2MASS data and proper motions. The spectroscopic confirmation was carried out by using the Shane 3 m telescope at the Lick observatory. Based on their spectral types, three H α emitters were confirmed as Be stars with H α equivalent widths greater than −10 Å. Two objects were also observed by the new spectrograph spectral energy distribution-machine (SED-machine) on the Palomar 60-inch Telescope. The SED-machine results show strong H α emission lines, which are consistent with the results of the Lick observations. The high efficiency of the SED-machine can provide rapid observations for Be stars in a comprehensive survey in the future.