29 citations · 78 across the 12 of their papers we have counts for
12 papers
A search for distant, pulsating red giants in the southern halo
Nicolas Mauron, Kamo S. Gigoyan, Tim R. Kendall +1
To investigate the asymptotic giant branch (AGB) population in the Galactic halo, we search for pulsating AGB stars at a heliocentric distance over 50kpc. Our research is based on…
Investigation of long-period variables in the Catalina Southern catalog: new carbon stars and false objects
Nicolas Mauron, Kamo S. Gigoyan, Karen K. Gigoyan +2
As part of our ongoing study of the evolved giants in the galactic halo, we consider the sample of 1286 long-period variables (LPVs) in the southern hemisphere provided by the Cata…
Infrared characteristics of the BIS catalog objects
S. Gaudenzi, R. Nesci, C. Rossi +3
We have studied several color-color infrared diagrams of the 276 late type stars of the BIS catalog. For 95 of these stars we derived spectral classification from our slit spectros…
Spectral Properties and Variability of BIS objects
S. Gaudenzi, R. Nesci, C. Rossi +3
Through the analysis and interpretation of newly obtained and of literature data we have clarified the nature of poorly investigated IRAS point sources classified as late type star…
Investigation of faint galactic carbon stars from the first Byurakan spectral survey. III. Infrared characteristics
K. S. Gigoyan, A. Sarkissian, C. Rossi +5
Infra-Red(IR) astronomical databases, namely, IRAS, 2MASS, WISE, and Spitzer, are used to analyze photometric data of 126 carbon stars whose spectra are visible in the First Byurak…
The variable V381 Lac and its possible connection with the R CrB phenomenon
Corinne Rossi, Flavia Dell'Agli, Andrea Di Paola +2
We have performed new medium resolution spectroscopy, optical and near infrared photometry to monitor the variability of the AGB carbon star V 381 Lac. Our observations revealed ra…
AGB stars and the plate archives heritage
Roberto Nesci, Silvia Gaudenzi, Corinne Rossi +3
We report on the characterization of a number of AGB candidate stars identified with objective-prism plates of the Byurakan Observatory. Digitized photographic sky survey plates an…
Cool carbon stars in the halo and in dwarf galaxies: Halpha, colours, and variabiity
Nicolas Mauron, Kamo S. Gigoyan, Paul Berlioz-Arthaud +1
The population of cool carbon (C) stars located far from the galactic plane is probably made of debris of small galaxies such as the Sagittarius dwarf spheroidal galaxy (Sgr), whic…
Extension of the C star rotation curve of the Milky Way to 24 kpc
P. Battinelli, S. Demers, C. Rossi +1
Demers and Battinelli published, in 2007 the rotation curve of the Milky Way based on the radial velocity of carbon stars outside the Solar circle. Since then we have established a…
New Bright Carbon Stars Found In The DFBS. (Research note, submitted to Astrophysics)
K. S. Gigoyan, C. Rossi, S. Sclavi +1
Carbon rich stars of Population II, such as CH giants, can provide direct information on the role of low to intermediate mass stars of the Halo in early Galactic evolution. Moreove…
Revised classification of the SBS carbon star candidates including the discovery of a new emission line dwarf carbon star
C. Rossi, K. S. Gigoyan, M. G. Avtandilyan +1
Faint high latitude carbon stars are rare objects commonly thought to be distant, luminous giants. For this reason they are often used to probe the structure of the Galactic halo;…
Cool carbon stars in the halo: new very red or distant objects
N. Mauron, K. S. Gigoyan, T. R. Kendall
The goal of this paper is to present and analyse a new sample of cool carbon (C)stars located in the halo. Twenty three new C stars were discovered. Spectra are typical of N-type s…