1994A&A...291..831L

Query : 1994A&A...291..831L

1994A&A...291..831L - Astronomy and Astrophysics, volume 291, 831-841 (1994/11-3)

SiC grains and evolution of carbon stars.

LORENZ-MARTINS S. and LEFEVRE J.

Abstract (from CDS):

A set of 32 carbon stars envelopes in a large range of spectral types has been modelled. The models were performed with two kinds of grains : SiC and amorphous carbon. Contrary to our previous study each kind of grain may be formed now at different distances from the central star. Correlations between SiC/A.C. ratio abundance and extinction opacity as well as SiC/A.C. ratio and period of luminosity were found. These correlations may indicate that the quantity of SiC grains relative to amorphous carbon grains decreases with carbon star evolution. A modification in SiC feature with increasing extinction opacity seems also to be connected to this evolution.

Abstract Copyright: ∼

Journal keyword(s): stars: carbon - circumstellar matter - radiative transfer - dust, extinction

Simbad objects: 33

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Number of rows : 33
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* R For C* 02 29 15.3077617632 -26 05 55.646585700   12.94 7.50 8.01   C4,3e 196 0
2 V* R Lep C* 04 59 36.3486921120 -14 48 22.502479140 15.06 13.51 7.76 4.90 3.42 C7,6e 339 0
3 V* W Ori C* 05 05 23.7190712856 +01 10 39.454639032 16.36 9.52 6.10 3.83 2.35 C-N5 287 0
4 V* S Aur C* 05 27 07.4585545416 +34 08 58.849073880   13.48 8.20 9.61   C-N5+ 129 0
5 RAFGL 799 C* 05 40 36.9286934424 +13 48 22.396959792       12.24   C8,4J 43 0
6 RAFGL 809 C* 05 43 49.6944851304 +32 42 06.199015788           C-rich 63 0
7 RAFGL 865 C* 06 04 00.04728 +07 25 52.0104           C-rich 99 0
8 RAFGL 935 C* 06 25 27.2602239336 -09 32 06.248402592       15.52 13.09 C 44 0
9 RAFGL 954 C* 06 32 42.1597737408 +43 17 13.217860320   16.56 12.48 11.72   C-rich 37 0
10 V* UU Aur C* 06 36 32.8371036984 +38 26 43.819021608   7.89 5.25 3.31 1.90 C-N5- 304 1
11 RAFGL 971 C* 06 36 54.2452032888 +03 25 28.696182312       18.4 16.558 C5,9e 69 0
12 V* CL Mon C* 06 55 36.6904592496 +06 22 43.179553200   12.69 11.00 9.06   C-J:6 95 0
13 V* R Vol C* 07 05 36.2081474688 -73 00 52.034502960   14.24 8.70     Ce 85 0
14 V* RY Mon C* 07 06 56.4753359184 -07 33 26.505848700   11.94 7.50     C-N5 97 0
15 RAFGL 1085 C* 07 12 04.0051268952 -20 17 23.124543108       14.43   C 59 0
16 V* FK Pup C* 08 09 10.9809434760 -36 17 06.984863088   12.70 12.00     C-N5 28 0
17 [W71b] 021-06 C* 08 10 48.8849951112 -32 52 05.635358940     19.946 15.07 12.76 C 57 0
18 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2343 0
19 V* X Vel C* 09 55 26.1116280096 -41 35 12.779975508   10.29 10.30 7.13 8.80 C-N3 73 0
20 V* RW LMi C* 10 16 02.2777043904 +30 34 19.045098516       15.27   C4,3e 396 0
21 V* V Hya C* 10 51 37.2615873024 -21 15 00.333928044   12.23 6.80 7.42   C-N:6 366 0
22 V* Y CVn C* 12 45 07.8260815656 +45 26 24.926308404 14.03 7.41 4.87 3.12 1.74 C-N5 477 0
23 V* RU Vir C* 12 47 18.4090087128 +04 08 41.356415148   14.75 9.00     C8,1e 178 0
24 V* RY Dra C* 12 56 25.9112361600 +65 59 39.811665876 15.56 9.44 6.34 4.34 2.91 C-N3III: 238 0
25 RAFGL 4211 C* 15 11 41.4444649944 -48 19 58.949705172           C-rich 53 0
26 V* X TrA C* 15 14 19.1755012584 -70 04 46.113298104 15.88 9.19 5.81     C5,5 120 0
27 WOS 48 C* 15 23 05.0730770544 -51 25 58.762691652   17.85 16.66 14.51 10.18 C 134 1
28 RAFGL 2135 C* 18 22 34.6778866248 -27 06 29.370810816         12.938 C-rich 51 0
29 RAFGL 2494 C* 20 01 09.0530414424 +40 55 38.995072680           C 67 0
30 RAFGL 2686 C* 20 59 09.6095179320 +27 26 38.857016112           C8-9,5eJ 51 1
31 V* RV Aqr C* 21 05 51.7376905368 -00 12 42.121057536     11.5     C6,3e 106 0
32 RAFGL 3068 C* 23 19 12.60744 +17 11 33.1332           C 270 0
33 RAFGL 3099 C* 23 28 17.1145171968 +10 54 37.402209036           C-rich 89 0

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