CN Data for AGB Stars
Interferometry of carbon rich AGB stars
... Interferometric observations do not show any significant variability effect at the 16 m baseline be- tween phases 0.17 and 0.23 in the K band, and for both the 15 m baseline between phases 0.66 and 0.97 and the 31 m ...
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IR imaging surveys of AGB stars in the Magellanic Clouds
... variable stars as well as their location in colour-magnitude and colour-colour ...SAGE stars: 66% of the extreme/obscured AGB stars are variable, ...C-rich AGB stars and 2% of ...
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Nucleation of small silicon carbide dust clusters in AGB stars
... Silicon carbide (SiC) grains are a major dust component in carbon-rich asymptotic giant branch stars. However, the formation pathways of these grains are not fully understood. We calculate ground states and ...
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Sodium abundances of AGB and RGB stars in Galactic globular clusters
... 2P stars. It is therefore fundamental to gather additional data in an homegeneous way for GCs spanning a large range in age, metal content, and general properties (mass, compactness, etc) to better ...
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Constraints on the H2O formation mechanism in the wind of carbon-rich AGB stars
... PACS data reduc- tion, such that measured line strengths can be directly compared with the intrinsic line strengths of theoretical ...carbon-rich AGB star, CW Leo has to be excluded from the sample as a ...
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Photodissociation and chemistry of N 2 in the circumstellar envelope of carbon-rich AGB stars
... A full description of the SS model and the numerical method for the computation of N(r i , ϑ) can be found in Appendix A. The implementation of N 2 and CO shielding functions in the SS model is not straightforward. This ...
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Chemistry and distribution of daughter species in the circumstellar envelopes of O-rich AGB stars
... The identification and abundance of parent species at inner radii is the first question to consider when modeling CSE chemistry. Typically three methods are used to constrain the parent species: TE predictions, ...
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Near-IR observations of NGC 6822: AGB stars, distance, metallicity and structure
... The position of the TRGB in the I band has been used to derive a distance modulus for the galaxy of (m − M) 0 = 23.34 ± 0.12. The photometry discussed in this paper has been calibrated us- ing DENIS data for the I ...
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The VMC Survey - XXXVII. Pulsation periods of dust-enshrouded AGB stars in the Magellanic Clouds
... I-band data). This includes the 291 stars that were used to define the criteria, but also known OGLE LPVs that were not used in the comparison (those with larger LSP ...not AGB stars (see ...
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COSMIC-LAB: Unexpected Results from High-resolution Spectra of AGB Stars in Globular Clusters
... 82 stars, members of the Galactic globular cluster NGC6388, obtained from ESO-VLT KMOS spectra acquired during the in- strument Science ...more data are needed before drawing any firm ...dividual ...
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Constraints on Metal Oxide and Metal Hydroxide Abundances in the Winds of AGB Stars: Potential Detection of FeO in R Dor
... < 130 K. If the cross-ladder populations were controlled by collisions, T x CL would be a direct measure of the kinetic temperature, T kin , provided cross-ladder radiative transitions are negligible, and a lower limit ...
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Spitzer Space Telescope spectra of post AGB stars in the large magellanic Cloud polycyclic aromatic hydrocarbons at low metallicities
... of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Anal- ysis Center/California Institute of Technology, funded by the ...
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Circumstellar C2, CN and CH+ in the optical spectra of post-AGB stars
... for CN is not as well defined as for C 2 . Although the CN molecular spectra are more complex than the C 2 spectra, and a unique identification of an absorption line with a single transition is not always ...
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Vortices in the wakes of AGB stars
... In order to investigate the effect of grid resolution on the production of vortices, the same simulation which produces vortices with a movement through the ISM of 75 km s −1 was rerun at a grid resolution of 100 3 and ...
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CiteSeerX — VLTI observations of AGB stars
... of AGB stars obtained with the VLT Interferometer ...Mira stars S Ori and RR Aql as well as of the su- pergiant AH ...variable stars widely separated in time and stellar ...
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CiteSeerX — Yields from single AGB stars
... single AGB evolution, with an emphasis on the mixing processes that alter the envelope composition, followed by a discussion of the stellar yields available from single AGB stellar ...
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On the missing second generation AGB stars in NGC 6752
... branch stars in the globular cluster NGC 6752 have disclosed a low [Na/Fe] abundance for the whole sample, suggesting that they are all first-generation stars, and that all second-generation stars ...
8
Envelope loss of RGB/AGB stars and the formation of hot subdwarfs
... mass stars may lose their envelopes in the first giant branch (RGB) or the asymptotic giant branch (AGB) via envelope ejection ...of AGB stars leads to the formation of carbon-oxygen (CO) ...
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Studies of Gas Absorption In Infrared Spectra of Carbon-Rich AGB Stars
... heats up rapidly. Meanwhile, the outer envelope expands, and the surface temperature of the star gets lower. It moves to the right on the H-R diagram. During the very end of the expansion, convection develops so ...
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Accretion disks formed from tidally-disrupted companions inside AGB stars
... Bp stars are between 10 3 and 10 4 G, increase corresponding to the ratio of volumes would yield field strengths of 10 7 − 10 10 G, consistent with high field magnetic white ...
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