The Nature of the Carbon Stars in the Galactic Bulge

1989 ◽  
pp. 71-74
Author(s):  
M. Azzopardi ◽  
J. Lequeux ◽  
E. Rebeirot ◽  
M. Rich
Keyword(s):  
Galactic Bulge ◽  
Carbon Stars

scholarly journals Long-period variables and carbon stars in the Galactic Bulge

1993 ◽  
Vol 153 ◽  
pp. 39-56 ◽  
Author(s):  
Patricia Whitelock
Keyword(s):  
Globular Clusters ◽  
Galactic Bulge ◽  
Carbon Stars ◽  
Instability Strip ◽  
Long Period ◽  
Wide Range ◽  
Evolutionary Phase ◽  
Binary Evolution ◽  
M Stars ◽  
Different Parts

The review covers the properties of red variables in globular clusters and the Galactic Bulge. Details are given of our current understanding of the Mira evolutionary phase. There is evidence that Miras in the LMC and the Bulge occupy different parts of the instability strip but obey the same PLC relation. The Bulge contains at least 2 × 104 Miras of which 100 or so have luminosities in excess of Mbol = — 5 mag. The Mira phase lasts more than 105 yr. These objects originate from stars with a wide range of metallicity, but it is currently unclear if the most metal-rich stars reach the top of the AGB to become Miras. Preliminary data suggest that the distribution of the Miras along the minor axis of the Bulge is different from that of the late-M stars but similar to the 2.4 μm luminosity.Our knowledge of the Bulge carbon stars is briefly reviewed. It is suggested that, by analogy with the carbon-rich dwarfs, these stars are probably best understood as the products of binary evolution.

scholarly journals The Nature of The Carbon Stars in The Galactic Bulge

1989 ◽  
Vol 136 ◽  
pp. 71-74
Author(s):  
M. Azzopardi ◽  
J. Lequeux ◽  
E. Rebeirot ◽  
M. Rich
Keyword(s):  
Galactic Bulge ◽  
Carbon Stars

JHK photometry of 33 carbon stars we found in the direction of the galactic bulge shows that they most likely belong to the bulge population and that they are intrinsically faint, metal rich objects. The conventional mixing mechanism is excluded in their case and thus their formation is still a mystery.

scholarly journals The lack of carbon stars in the Galactic bulge

2008 ◽  
Vol 17 (4) ◽  
pp. 1518-1525 ◽  
Author(s):  
Zhu Chun-Hua ◽  
Lü Guo-Liang ◽  
Wang Zhao-Jun ◽  
Zhang Jun
Keyword(s):  
Galactic Bulge ◽  
Carbon Stars

Note on the spectral classification of carbon stars in the photographic infrared region

1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita
Keyword(s):  
Infrared Region ◽  
Spectral Classification ◽  
Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

Nitrogen isotopic ratios in Galactic AGB carbon stars

2013 ◽  
Author(s):  
Ruben Hedrosa ◽  
Carlos Abia ◽  
B. Plez ◽  
Inmaculada Domínguez
Keyword(s):  
Isotopic Ratios ◽  
Carbon Stars

Metallicity of Red Giants in the Galactic Bulge from Near-Infrared Spectroscopy

2000 ◽  
Vol 120 (2) ◽  
pp. 833-844 ◽  
Author(s):  
Solange V. Ramírez ◽  
Andrew W. Stephens ◽  
Jay A. Frogel ◽  
D. L. DePoy
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Red Giants ◽  
Galactic Bulge

The Metallicity and Reddening of Stars in the Inner Galactic Bulge

1999 ◽  
Vol 117 (5) ◽  
pp. 2296-2307 ◽  
Author(s):  
Jay A. Frogel ◽  
Glenn P. Tiede ◽  
Leslie E. Kuchinski
Keyword(s):  
Galactic Bulge
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