230 citations · 562 across the 20 of their papers we have counts for
9 papers · 1 filter
The porous envelope and circumstellar wind matter of the closest carbon star, CW Leonis
Hyosun Kim, Ho-Gyu Lee, Youichi Ohyama +5
Recent abrupt changes of CW Leonis may indicate that we are witnessing the moment that the central carbon star is evolving off the Asymptotic Giant Branch (AGB) and entering into t…
Multi-epoch Optical Images of IRC+10216 Tell About the Central Star And the Adjacent Environment
Hyosun Kim, Ho-Gyu Lee, Youichi Ohyama +5
Six images of IRC+10216 taken by the Hubble Space Telescope at three epochs in 2001, 2011, and 2016 are compared in the rest frame of the central carbon star. An accurate astrometr…
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…
HST Images Reveal Dramatic Changes in the Core of IRC+10216
Hyosun Kim, Ho-Gyu Lee, Nicolas Mauron +1
IRC+10216 is the nearest carbon star with a very high mass-loss rate. The existence of a binary companion has been hinted by indirect observational evidence, such as the bipolar mo…
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…
The dust and gas content of carbon stars toward the Galactic Halo
Eric Lagadec, Greg. C. Sloan, Albert. A. Zijlstra +2
We present Spitzer IRS spectra of four carbon stars located in the Galactic Halo and the thick disc. The spectra display typical features of carbon stars with SiC dust emission and…