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Paper: Simultaneous Time-Series Spectroscopy and Photometry of PG 1219+534 (KY UMa)
Volume: 392, Hot Subdwarf Stars and Related Objects
Page: 343
Authors: Reed, M.D.; Eggen, J.R.; Harms, S.L.; Zhou, A.-Y.; VanWey, R.L.; Telting, J.H.; Østensen, R.H.; O’Toole, S.J.; Terndrup, D.M.
Abstract: During seven nights in 2006, we obtained over 5000 spectra of the pulsating star PG 1219+534 (KY UMa) along with simultaneous optical photometry. PG 1219+534 is of particular interest because its pulsation spectrum is easily resolved in a few hours, yet is too dense for a single modal degree. During our observations, five frequencies were detected photometrically, while four were detected in radial velocity and three in equivalent width. The spectra were phase-folded over the pulsation periods and four frequencies were fit with atmospheric models to determine variations in temperature and gravity. These observations have previously been reported by Eggen et al. (2007), and so here we briefly summarize the procedures and findings.
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