SIMBAD references

2016A&A...589A..36G - Astronomy and Astrophysics, volume 589A, 36-36 (2016/5-1)

Carbon stars in the X-Shooter Spectral Library.

GONNEAU A., LANCON A., TRAGER S.C., ARINGER B., LYUBENOVA M., NOWOTNY W., PELETIER R.F., PRUGNIEL P., CHEN Y.-P., DRIES M., CHOUDHURY O.S., FALCON-BARROSO J., KOLEVA M., MENESES-GOYTIA S., SANCHEZ-BLAZQUEZ P. and VAZDEKIS A.

Abstract (from CDS):

We provide a new collection of spectra of 35 carbon stars obtained with the ESO/VLT X-Shooter instrument as part of the X-Shooter Spectral Library project. The spectra extend from 0.3µm to 2.4µm with a resolving power above ∼8000. The sample contains stars with a broad range of (J-K) color and pulsation properties located in the Milky Way and the Magellanic Clouds. We show that the distribution of spectral properties of carbon stars at a given (J-K) color becomes bimodal (in our sample) when (J-K) is larger than about 1.5. We describe the two families of spectra that emerge, characterized by the presence or absence of the absorption feature at 1.53µm, generally associated with HCN and C2H2. This feature appears essentially only in large-amplitude variables, though not in all observations. Associated spectral signatures that we interpret as the result of veiling by circumstellar matter, indicate that the 1.53µm feature might point to episodes of dust production in carbon-rich Miras.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: AGB and post-AGB - stars: carbon - infrared: stars - ultraviolet: stars

VizieR on-line data: <Available at CDS (J/A+A/589/A36): table.dat fits/*>

Simbad objects: 67

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2016A&A...589A..36G and select 'bookmark this link' or equivalent in the popup menu


2021.03.08-14:06:44

© Université de Strasbourg/CNRS

    • Contact