AN ATLAS OF FAR-ULTRAVIOLET SPECTRA OF THE ZETA AURIGAE BINARY 31 CYGNI WITH LINE IDENTIFICATIONS

作者：Bauer Wendy Hagen^*; Bennett Philip D

来源：Astrophysical Journal, The - Supplement Series, 2014, 211(2): 27.

DOI：10.1088/0067-0049/211/2/27

• atlases
• circumstellar matter
• line: identification
• line: profiles
• stars: individual (31 Cyg)
• ultraviolet: stars

The zeta Aurigae system 31 Cygni (K4 Ib + B4 V) was observed by the FUSE satellite during total eclipse and at three phases during chromospheric eclipse. We present the coadded, calibrated spectra and atlases with line identifications. During total eclipse, emission from high ionization states (e.g., Fe III and Cr III) shows asymmetric profiles redshifted from the systemic velocity, while emission from lower ionization states (e.g., Fe II and O I) appears more symmetric and is centered closer to the systemic velocity. Absorption from neutral and singly ionized elements is detected during chromospheric eclipse. Late in chromospheric eclipse, absorption from the K star wind is detected at a terminal velocity of similar to 80 km s(-1). These atlases will be useful for interpreting the far-UV spectra of other. zeta Aur systems, as the observed FUSE spectra of 32 Cyg, KQ Pup, and VV Cep during chromospheric eclipse resemble that of 31 Cyg.

• 出版日期2014-4