Detailed optical spectroscopy of the B[e] Star MWC17

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• 作者：V. G. Klochkova ; E. L. Chentsov
• 关键词：stars ; emission ; line ; Be ; stars ; individual ; MWC17
• 刊名：Astrophysical Bulletin
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：71
• 期：1
• 页码：33-42
• 全文大小：645 KB
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• 作者单位：V. G. Klochkova (1)
  E. L. Chentsov (1)
  
  1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Russia
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Astronomy, Astrophysics and Cosmology
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1990-3421

文摘

Based on the material of multiple high-resolution R = 60 000 observations conducted on the 6-m telescope (BTA) of the Special Astrophysical Observatory in combination with the Nasmyth Echelle Spectrograph (NES), we closely studied the features of the optical spectrum of the star MWC17 with the B[e] phenomenon. In the wavelength interval of 4050–6750 Å, we identified numerous permitted and forbidden emissions, interstellar Na I lines, and diffuse interstellar bands (DIBs). Radial velocities were estimated from lines of different origin. As the systemic velocity, V _sys, the velocity of the forbidden emissions can be accepted: −47 kms−1 (relative to the local standard V _lsr = −42 kms−1). Comparison of the obtained data with the earlier measurements allows us to conclude on the absence of considerable variability of spectral details.