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The absolute magnitudes of carbon stars - Carbon stars in binary systems
The Astrophysical Journal, 1975 Absolute visual magnitudes have been determined for carbon stars belonging to binary systems. These range from about 0 to brighter than -4, with a mean value of -2.3 for N stars. Bolometric corrections are deduced, giving bolometric absolute magnitudes in the range -4 to -8.
B. I. Olson, H. B. Richer
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INFRARED COLOR-COLOR DIAGRAMS FOR AGB STARS [PDF]
Journal of Astronomy and Space Sciences, 2007 We present infrared color-color diagrams of AGB stars from the observations at near and mid infrared bands. We compile the observations for hundreds of OH/IR stars and carbon stars using the data from the Midcourse Space Experiment (MSX), the two micron ...
Kyung-Won Suh
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Nuclear Physics A, 2005 The triple alpha process plays an important role in the production of 12C in stars. Its rate is known with an accuracy of about 12%. We examine the corresponding uncertainties introduced in the description of pre-supernova stars, of nucleosynthesis in a core-collapse SN explosion, and of the production of 12C during the third dredge-up in asymptotic ...
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The Initial-Final Mass Relation from Carbon Stars in Open Clusters
GalaxiesRecently, Marigo et al, identified a kink in the initial-final mass relation around initial masses of Mini≈1.65−2.10M⊙, based on Gaia DR2 and EDR3 data for white dwarfs in open clusters aged 1.5–2.5 Gyr.
Carlos Abia +4 more
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Dust Formation in the Wind of AGB Stars—The Effects of Mass, Metallicity and Gas-Dust Drift
Universe, 2022 Dust production in the wind of stars evolving through the asymptotic giant branch is investigated by using a stationary wind model, applied to results from stellar evolution modelling.
Silvia Tosi +3 more
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A search for galactic carbon stars [PDF]
International Astronomical Union Colloquium, 1988 The carbon star is one of the best probes for the galactic study; (1)it is intrinsically bright (Mbol = − 2 to − 6) especially in the red and infrared wavelength regions,(2)it has spectral features readily detectable on objective prism plates due to their strong carbon molecular bands,(3)it is an evolved star distributed abundantly (∼1 star per square ...
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The Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable
The Astrophysical Journal, 2023 Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric surveys of the Galaxy and Magellanic Clouds uncovered new DY Per variables with infrared ...
D. A. García-Hernández +5 more
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On the formation of carbon stars [PDF]
The Astrophysical Journal, 1990 The effect of the mass loss on the formation of carbon stars is investigated using different mass-loss formulas including one proposed in this paper, and the results of different formulas are compared with the observed properties of C stars. It is shown that the new formula reproduces well the observed luminosity distribution of AGB stars, the initial ...
Bryan, GL, Volk, K, Kwok, S
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Identification of Carbon Stars in LAMOST DR9 Based on Deep Learning
The Astrophysical Journal Supplement SeriesCarbon stars play a crucial role in astronomical research and are significant for understanding stellar evolution, measuring cosmic distances, and studying galaxy kinematics.
YiMing He +5 more
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Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source