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

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

1994A&A...291..831L - Astronomy and Astrophysics, volume 291831-841 (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

View the references in ADS

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 - 2026	#notes
1	V* R For	C*	02 29 15.3077617632	-26 05 55.646585700		12.94	7.50	8.01		C4,3e	206	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	360	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	300	0
4	V* S Aur	C*	05 27 07.4585545416	+34 08 58.849073880		13.48	8.20	9.61		C-N5+	136	0
5	RAFGL 799	C*	05 40 36.9286934424	+13 48 22.396959792				12.24		C8,4J	47	0
6	RAFGL 809	C*	05 43 49.6944851304	+32 42 06.199015788						C-rich	68	0
7	RAFGL 865	C*	06 04 00.04728	+07 25 52.0104						C-rich	104	1
8	RAFGL 935	C*	06 25 27.2602239336	-09 32 06.248402592				15.52	13.09	C	47	0
9	RAFGL 954	C*	06 32 42.1597737408	+43 17 13.217860320		16.56	12.48	11.72		C-rich	40	0
10	V* UU Aur	C*	06 36 32.8371036984	+38 26 43.819021608		7.89	5.25	3.31	1.90	C-N5-	314	1
11	RAFGL 971	C*	06 36 54.2452032888	+03 25 28.696182312				18.4	16.558	C5,9e	73	0
12	V* CL Mon	C*	06 55 36.6904592496	+06 22 43.179553200		12.69	11.00	9.06		C-J:6	101	0
13	V* R Vol	C*	07 05 36.2081474688	-73 00 52.034502960		14.24	8.70			Ce	91	0
14	V* RY Mon	C*	07 06 56.4753359184	-07 33 26.505848700		11.94	7.50			C-N5	100	0
15	RAFGL 1085	C*	07 12 04.0051268952	-20 17 23.124543108				14.43		C	63	0
16	V* FK Pup	C*	08 09 10.9809434760	-36 17 06.984863088		12.70	12.00			C-N5	30	0
17	[W71b] 021-06	C*	08 10 48.8849951112	-32 52 05.635358940			19.946	15.07	12.76	C	60	0
18	IRC +10216	C*	09 47 57.40632	+13 16 43.5648						C9,5e	2455	0
19	V* X Vel	C*	09 55 26.1116280096	-41 35 12.779975508		10.29	10.30	7.13	8.80	C-N3	79	0
20	V* RW LMi	C*	10 16 02.2777043904	+30 34 19.045098516				15.27		C4,3e	411	0
21	V* V Hya	C*	10 51 37.2615873024	-21 15 00.333928044		12.23	6.80	7.42		C-N:6	391	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	493	0
23	V* RU Vir	C*	12 47 18.4090087128	+04 08 41.356415148		14.75	9.00			C8,1e	185	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:	248	0
25	RAFGL 4211	C*	15 11 41.4444649944	-48 19 58.949705172						C-rich	62	0
26	V* X TrA	C*	15 14 19.1755012584	-70 04 46.113298104	15.88	9.19	5.81			C5,5	130	0
27	WOS 48	C*	15 23 05.0730770544	-51 25 58.762691652		17.85	16.66	14.51	10.18	C	150	1
28	RAFGL 2135	C*	18 22 34.6778866248	-27 06 29.370810816					12.938	C-rich	55	0
29	RAFGL 2494	C*	20 01 09.0530414424	+40 55 38.995072680						C	71	0
30	RAFGL 2686	C*	20 59 09.6095179320	+27 26 38.857016112						C8-9,5eJ	57	1
31	V* RV Aqr	C*	21 05 51.7376905368	-00 12 42.121057536			11.5			C6,3e	112	0
32	RAFGL 3068	C*	23 19 12.60744	+17 11 33.1332						C	288	1
33	RAFGL 3099	C*	23 28 17.1145171968	+10 54 37.402209036						C-rich	95	0

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