2000A&A...357..515B


Query : 2000A&A...357..515B

2000A&A...357..515B - Astronomy and Astrophysics, volume 357, 515-519 (2000/5-2)

On the distance and mass-loss rate of carbon stars showing the silicon carbide emission feature.

BLANCO A., BORGHESI A., FONTI S. and OROFINO V.

Abstract (from CDS):

The distances and the mass-loss rates of carbon stars are in general very poorly known. The various estimates of the distances, taken from the general literature, show considerable discrepancies, while the evaluations of the mass-loss rates can be in error by more than an order of magnitude. In this work we have evaluated these two important stellar parameters for a previously selected sample of 55 carbon stars showing the 11.3 µm band, commonly attributed to silicon carbide (SiC) grains. To perform the calculation we have used the values of geometrical and physical parameters of these sources obtained from the best fits of their observed spectra. Using the distance values derived in this way and the 11.3 µm band intensity, we have evaluated the absolute band strength and we have found that, in agreement with other authors, there is a correlation between this quantity and the mass-loss rate. This correlation can be very useful to determine the mass-loss rate of other carbon stars not included in our sample, by means of the intensity of the SiC band, without using the usual technique based on CO observations. The same procedure can be conveniently applied to the same as well as to other carbon stars, whose spectra will be available to the community in the next future (i.e. the infrared spectra of sources observed by the Infrared Satellite Observatory, ISO).

Abstract Copyright:

Journal keyword(s): stars: carbon - stars: circumstellar matter - stars: distances - stars: mass-loss

Simbad objects: 57

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Number of rows : 57
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* VX And C* 00 19 54.0161311920 +44 42 33.895984824   12.23 7.80     C-J4.5 154 0
2 V* AQ And C* 00 27 31.6830716856 +35 35 14.495266104   11.3 9.90     C-N5+ 106 0
3 V* HV Cas C* 01 11 03.4682297496 +53 43 40.246817376     12.90     C4,3e 79 0
4 Case 44 C* 01 13 44.5492749600 +62 57 36.056361096     13.71     C6,3 45 0
5 V* Z Psc C* 01 16 05.0304050160 +25 46 09.689905056 12.85 9.46 6.84     C-N5 171 0
6 V* X Cas C* 01 56 38.0909605224 +59 15 33.755492844   13.29 9.45     C5,4e 93 0
7 LEE 259 C* 03 26 29.5037418864 +47 31 48.551540844           N 170 0
8 HD 232820 C* 03 41 29.5964236008 +51 30 11.728132920   12.14 8.140     C5,5_MS4 67 0
9 V* U Cam C* 03 41 48.1758504744 +62 38 54.395692404   11.5 11.00     C-N5 238 0
10 V* AC Per C* 03 45 03.4113373608 +44 46 51.772182996   12.46 11.80     C-N5 45 0
11 V* ST Cam C* 04 51 13.3487495016 +68 10 07.637629620   9.77 9.20     C-N5 141 0
12 V* TT Tau C* 04 51 31.2645256728 +28 31 36.866648748   11.0 10.20     C-N5+ 90 0
13 V* R Lep C* 04 59 36.3486921120 -14 48 22.502479140 15.06 13.51 7.76 4.90 3.42 C7,6e 326 0
14 V* W Ori C* 05 05 23.7190712856 +01 10 39.454639032 16.36 9.52 6.10 3.83 2.35 C-N5 280 0
15 V* TX Aur C* 05 09 05.4680649576 +39 00 08.468858376   12.28 9.09     C-N4.5 63 1
16 V* UV Aur C* 05 21 48.9129714624 +32 30 40.177664388   12.46 10.41 9.15   C8,1Je 202 0
17 HD 34842 ** 05 21 48.92 +32 30 39.8           C8,1Je+B9V 197 0
18 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16002 1
19 V* S Aur C* 05 27 07.4585545416 +34 08 58.849073880   13.48 8.20     C-N5+ 121 0
20 V* Y Tau C* 05 45 39.4101366456 +20 41 42.148590324 15.71 9.90 6.90 4.69 3.19 C-N5- 217 1
21 V* AZ Aur C* 06 01 07.2278104488 +39 40 14.199522420   13.20 10.50     C8,2e 59 0
22 V* GK Ori C* 06 17 42.0948428976 +08 31 11.394748236     9.50     C-N5- 56 0
23 V* BN Mon C* 06 21 58.0007287200 +07 20 57.669147852   12.58 12.70     C4,3e 66 0
24 V* UU Aur C* 06 36 32.8371036984 +38 26 43.819021608   7.89 5.25 3.31 1.90 C-N5- 296 1
25 V* CL Mon C* 06 55 36.6904592496 +06 22 43.179553200   12.69 11.00     C-J:6 90 0
26 V* RV Mon C* 06 58 21.4892787216 +06 10 01.558277796   10.4 7.47     C4,5 97 1
27 V* RY Mon C* 07 06 56.4753359184 -07 33 26.505848700   11.94 7.50     C-N5 91 0
28 V* W CMa C* 07 08 03.4360567560 -11 55 23.796162984 13.44 8.98 6.56 4.86 3.51 C-N5 117 0
29 BM IV 10 C* 07 29 12.5855662656 -19 27 48.659126364   13.44 12.13 10.41 9.44 C 50 0
30 C* 918 C* 07 51 13.5861890184 -02 37 10.897180716     12.5     C 34 0
31 V* RY Hya C* 08 20 06.3208737504 +02 45 56.175135120   12.91 12.20     C-N5+ 58 0
32 V* X Cnc C* 08 55 22.8819374952 +17 13 52.583009880   9.63 6.40 4.29 2.90 C-N4.5 263 1
33 V* T Cnc C* 08 56 40.1375904072 +19 50 56.919947352   12.07 7.60     C-N5 130 1
34 V* VY UMa C* 10 45 04.0305312384 +67 24 40.979062260 12.91 8.34 5.95 4.20 2.94 C-N5 194 0
35 V* SS Vir C* 12 25 14.3948245008 +00 46 10.946740368 15.84 10.79 6.60     C-N4.5: 199 1
36 V* Y CVn C* 12 45 07.8260815656 +45 26 24.926308404 14.03 7.41 4.87 3.12 1.74 C-N5 468 0
37 V* RU Vir C* 12 47 18.4090087128 +04 08 41.356415148   14.75 9.00     C8,1e 169 0
38 V* RY Dra C* 12 56 25.9112361600 +65 59 39.811665876 15.56 9.44 6.34 4.34 2.91 C-N3III: 232 0
39 V* V Oph C* 16 26 43.7067710136 -12 25 35.816948688   12.91 7.30     C-N:4 136 0
40 V* SU Sco C* 16 40 38.6728084368 -32 22 48.047102292   13.06 11.70     C-N5- 42 0
41 V* T Dra C* 17 56 23.3288487384 +58 13 06.783372804   18.08 7.20     C6,2e 182 0
42 V* T Lyr C* 18 32 20.0767626264 +36 59 55.635218376   12.74 7.84 7.30   C-J4:p 176 1
43 V* HK Lyr C* 18 42 50.0046519456 +36 57 30.889598976 10.730 10.730 7.650     C-N5 99 0
44 V* UV Aql C* 18 58 32.4279985824 +14 21 49.597230024   14.65 11.10 9.30 7.83 C5,3 72 0
45 Case 181 C* 19 03 18.4284440280 +07 30 45.340262352     14.22 14.77   C 69 0
46 V* V Aql C* 19 04 24.1544971752 -05 41 05.444321424   11.09 6.90     C-N5 208 0
47 V* CG Vul C* 19 16 54.6557085528 +21 54 53.275854096   13.46 13.50     C4,4J 40 0
48 V* U Lyr C* 19 20 09.1516147560 +37 52 36.919225776   12.93 8.30   7.616 C4,5e 70 1
49 V* AW Cyg C* 19 28 47.5684705704 +46 02 38.140787184   12.07 11.00     C4,5 82 0
50 Case 456 C* 19 43 33.4683042312 +34 29 23.920589688     12.17 10.69   C 29 0
51 V* AX Cyg C* 19 57 12.5066777184 +44 15 40.037709024 12.97 11.28 7.85     C-N5- 85 0
52 V* X Sge C* 20 05 04.9187679336 +20 38 53.369194092   11.88 8.53 8.336 5.00 C6,4 69 0
53 Case 635 C* 20 10 19.4862923160 +29 20 09.136425768           C 19 0
54 BD+32 3954 C* 20 49 16.2071883048 +33 13 47.199700380   12.26 9.154     C5+,5 60 0
55 Case 479 C* 21 05 07.9303118688 +51 48 19.594446372   20.8   14.7   C6,4e 57 0
56 LEE 228 C* 21 34 07.4785393032 +39 04 15.918662712   16.72 11.90     C7,2e 110 0
57 V* V460 Cyg C* 21 42 01.0830893088 +35 30 36.719916552 12.97 8.32 5.84 4.10 2.71 C-N5 206 1

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2022.05.25-12:06:56

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