Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.4607l&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #46.07; Bulletin of the American Astronomical Society, Vol. 29, p.1284
Astronomy and Astrophysics
Astronomy
Scientific paper
Spectra of Mira stars from about 6200 Angstroms to 8800 Angstroms were taken in a search for anticorrelation between the Hα emission feature and the CaII infrared triplet. This anticorrelation is indicative of the flourescence of Hepsilon photons by CaII, which may explain the near absence of Hepsilon when the other Balmer emission lines are present (Castelaz & Luttermoser 1997, AJ, 114, 1584). The spectra also provides a measure of effective temperature. We will present spectra for R Leo, R Cvn, and V CVn taken in February, March, and May of 1997 using a low resolution spectrograph onboard the Southeastern Association for Research in Astronomy 0.9-meter telescope at Kitt Peak, Arizona. We will also present an initial set of differential BVRI photometry of the Mira stars taken nearly simultaneously with the spectra. The authors gratefully acknowledge support from NSF grant AST-9500756. Eric Lingerfelt and Clayton Clark are undergraduates at ETSU who greatly appreciate support from an NSF REU Supplement grant.
Castelaz Michael W.
Clark James C.
Lingerfelt Eric
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