Be STARS in the OPEN CLUSTER NGC 6830

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101936

Title:	Be STARS in the OPEN CLUSTER NGC 6830
Authors:	葉永烜;Yu, Po-Chieh;Edelson, Rick;Ngeow, Chow-Choong;Ofek, Eran O.;Lin, Chien-Cheng;Huang, L.-C.;Chen, Hui Chen;Malkan, Matthew A.;Lin, Hsing Wen;Cheng, Yu Chi;Quimby, Robert M.;Chen, Wen Ping;Laher, Russ R.;Ip, Wing-Huen;Surace, Jason;Lee, Chien De;Sagi, Ben-Ami;Chang, Chan-Kao;Kulkarni, Shrinivas R.;Konidaris, Nick P.;Ritter, Andreas
Contributors:	理學院天文研究所
Keywords:	astro-ph.SR;Astronomical and Space Sciences;Astronomy & Astrophysics;Astrophysics - Solar and Stellar Astrophysics;Be;FOS: Physical sciences;galaxies: star clusters: individual;galaxies: star clusters: individual (NGC 6830);instrumentation: spectrographs;Solar and Stellar Astrophysics (astro-ph.SR);stars: emission-line
Date:	2016-05-01
Issue Date:	2026-04-21 14:51:29 (UTC+8)
Publisher:	IOP Publishing Ltd.;American Astronomical Society
Abstract:	摘要： ABSTRACT We report the discovery of two new Be stars, and re-identify one known Be star in the open cluster NGC 6830. Eleven Hα emitters were discovered using the Hα 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 Hα emitters were confirmed as Be stars with Hα 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 Hα 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. 出版者： American Astronomical Society 出版日期： 2016-04-20 出處： The Astronomical Journal, 2016-04, Vol.151, p.121- 資源來源： Institute of Physics Journals 識別號： ISSN: 0004-6256 識別號： EISSN: 1538-3881 識別號： DOI: 10.48550/arxiv.1604.02276 識別號： DOI: 10.3847/0004-6256/151/5/121
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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