Carbon Isotope Ratios in Oxygen Rich Mira and SRa Variables

Hinkle, Kenneth H.; Scharlach, Werner W. G.

doi:10.1007/978-94-009-5325-3_33

Kenneth H. Hinkle³ &
Werner W. G. Scharlach⁴

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 114))

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Abstract

Carbon isotope ratios have been measured in oxygen rich Mira and SRa variables brighter than K=+0.6. Results are now available for 34 stars (25 Miras and 9 SRa variables). The longer period Miras have a ¹²C/¹³C ratio about three times larger than the shorter period Miras. For Miras, period, Tc abundance and ¹²C/¹³C are shown to be functionally related. This is interpreted in terms of a period-mass relation.

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Authors and Affiliations

Kitt Peak National Observatory, National Optical Astronomy Observatories, P. 0. Box 26732, Tucson, Arizona, USA, 85726
Kenneth H. Hinkle
National Radio Astronomy Observatory, 2010 North Forbes Blvd., Tucson, Arizona, USA, 85726
Werner W. G. Scharlach

Authors

Kenneth H. Hinkle
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Werner W. G. Scharlach
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Editors and Affiliations

Strasbourg Observatory, Strasbourg, France
Mercedes Jaschek
Perkins Observatory, Delaware, Ohio, USA
Philip C. Keenan

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Hinkle, K.H., Scharlach, W.W.G. (1985). Carbon Isotope Ratios in Oxygen Rich Mira and SRa Variables. In: Jaschek, M., Keenan, P.C. (eds) Cool Stars with Excesses of Heavy Elements. Astrophysics and Space Science Library, vol 114. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5325-3_33

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DOI: https://doi.org/10.1007/978-94-009-5325-3_33
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8851-0
Online ISBN: 978-94-009-5325-3
eBook Packages: Springer Book Archive

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