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Infrared Spectroscopy of Symbiotic Stars. IV. V2116 Ophiuchi/GX 1+4, The Neutron Star Symbiotic
Kenneth H. Hinkle, Francis C. Fekel, Richard R. Joyce +3
We have computed, based on 17 infrared radial velocities, the first set of orbital elements for the M giant in the symbiotic binary V2116 Ophiuchi. The giant's companion is a neutr…
Long period variables in 47 Tuc: direct evidence for lost mass
T. Lebzelter, P. R. Wood
We have identified 22 new variable red giants in 47 Tuc and determined periods for another 8 previously known variables. All red giants redder than V-I_c=1.8 are variable at the li…
Atmospheric dynamics in carbon-rich Miras. II. Models meet observations
W. Nowotny, T. Lebzelter, J. Hron +1
Originating in different depths of the very extended atmospheres of AGB stars, various molecular spectral lines observable in the near-infrared show diverse behaviours and can be u…
Long period variables in the globular cluster 47 Tuc: radial velocity variations
T. Lebzelter, P. R. Wood, K. H. Hinkle +2
We present near infrared velocity curves for 12 long period variables (LPVs) in the globular cluster 47 Tuc (NGC 104). New light curves are also presented for these variables. Resu…