1999A&A...344..263K


Query : 1999A&A...344..263K

1999A&A...344..263K - Astronomy and Astrophysics, volume 344, 263-276 (1999/4-1)

Dust extinction and intrinsic SEDs of carbon-rich stars. III. The Miras, CS, and SC stars.

KNAPIK A., BERGEAT J. and RUTILY B.

Abstract (from CDS):

The present work is an extension of a recent study by Knapik & Bergeat (1997A&A...321..236K) and Bergeat et al. (1999A&A...342..773B) henceforth called Papers I and II, respectively. The spectral energy distributions (SEDs) of about 440 carbon-rich stars and the interstellar extinction observed on their line of sights were analysed. The methods originally developed for Semi-Regular (SR) and Irregular (L) variables (Paper I: our groups CV1 to CV6) were then extended (Paper II) to the hot carbon (HC) stars (our groups HC0 to HC5) and related objects (RCB, BaII and HdC stars). Shortly, this is a kind of a pair method making use simultaneously of the whole SED from UV to IR. Our approach is applied here to the galactic cool carbon-rich variables which were not considered in Paper I, namely the carbon Miras and very cool non-Miras, and the CS and SC variables. The carbon Miras with infrared silicate emission are also studied. The photometric CV1 to CV6 classification scheme of paper I is implemented, and we add here a later CV7-group and a specific SCV-group which corresponds to spectroscopic SC stars. A continuous S-SC-CS-C sequence is clearly supported by our results. The carbon stars with IR silicate emission included in our study do have carbon-rich SEDs of the three consecutive groups HC5, CV1 and CV2. They stand among the relatively hot carbon variables, in the 3600-3000K range in effective temperature. The carbon Miras are satisfactorily described in this enlarged scheme. No specific extension is required since non-Miras are also found in the CV7 and SCV-groups. The derived group is however frequently phase-dependent in these large amplitude variables. Additional selective extinction of circumstellar (CS) origin is observed in variable amounts. The mean extinction law for the interstellar diffuse medium as tabulated by Mathis (1990) is shown to be relevant. It applies to both interstellar and circumstellar extinction with a possible CS neutral extinction in addition which would remain undetected here. The corresponding colour excess E(B-V) is larger at minimum light or intermediate phases than what it is at maximum light (where it can amount to zero). It is associated to large IR excesses attributed to the emission from CS dust. Long-term variations on thousands of days may be interpreted in terms of varying CS dust opacity on the line of sight. The dust influence is discussed. It is shown that scattering, if substantial on the line of sight in the observing lobe, has to be essentially wavelength-independent, i.e. due to large neutral scatterers, especially in high opacity objects like IRC +10216. Finally, with the HC0 to HC5 classification of HC stars (Paper II), we obtain a fourteen groups sequence (HC0 to HC5 and then CV1 to CV7 from the earlier one to the latest one, and SCV for SC stars apart). The number of studied stars amounts now to about 600 that is about 40stars per group on the average when the oxygen-type SEDs are subtracted. The effective temperature calibration of this classification scheme is currently in preparation.

Abstract Copyright:

Journal keyword(s): stars: carbon - stars: circumstellar matter - stars: AGB and post-AGB - ISM: dust, extinction

VizieR on-line data: <Available at CDS (J/A+A/344/263): table5.dat>

Simbad objects: 155

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Number of rows : 155
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* SU And C* 00 04 36.4075087776 +43 33 04.727938248 15.00 10.50 8.00     C-N5 69 0
2 V* VX And C* 00 19 54.0161311920 +44 42 33.895984824   12.23 7.80     C-J4.5 154 0
3 V* AQ And C* 00 27 31.6830716856 +35 35 14.495266104   11.3 9.90     C-N5+ 106 0
4 V* W Cas C* 00 54 53.8485356496 +58 33 49.148976420   11.32 11.32     C9,1e 132 0
5 V* HV Cas C* 01 11 03.4682297496 +53 43 40.246817376     12.90     C4,3e 79 0
6 Case 44 C* 01 13 44.5492749600 +62 57 36.056361096     13.71     C6,3 45 0
7 V* R Scl C* 01 26 58.0939182720 -32 32 35.439234828 17.26 9.59 5.72 3.69 2.30 C-N5+ 315 0
8 V* X Cas C* 01 56 38.0909605224 +59 15 33.755492844   13.29 9.45     C5,4e 93 0
9 V* CN Per C* 02 06 39.5761641288 +56 51 06.289456500   11.72     9.16 Ce 17 0
10 IRAS 02152+2822 C* 02 18 06.0448778784 +28 36 45.348812928           C-rich 50 0
11 V* R For C* 02 29 15.3077617632 -26 05 55.646585700   12.94 7.50     C4,3e 188 0
12 V* TW Hor C* 03 12 33.1599109680 -57 19 17.577229512   7.93 5.71 3.78 2.40 C-N5IIIb: 128 0
13 LEE 259 C* 03 26 29.5037418864 +47 31 48.551540844           N 170 0
14 V* Y Per C* 03 27 42.3911607264 +44 10 36.486741684   11.89 9.19 8.78   C5,3e_Ba5 99 0
15 IRC +40070 C* 03 52 14.3530320888 +39 52 50.760776172       12.15   C-rich 42 0
16 V* T Cae C* 04 47 18.9236637528 -36 12 33.571330524 13.27 10.05 7.73     C-N4IV: 55 0
17 HD 280188 C* 04 52 34.8738030432 +38 30 19.902983004   11.49 8.64     C8,1J 68 0
18 V* AU Aur C* 04 54 14.9992708728 +49 54 00.310512168     11.81     C7,2 65 0
19 V* R Ori S* 04 59 00.5594811144 +08 07 49.719678420   13.06 9.05     SC5-8e 65 0
20 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
21 V* GP Ori S* 05 02 48.0655541832 +15 19 12.661687128   11.95 12.20     SC7/8 92 0
22 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
23 V* UV Aur C* 05 21 48.9129714624 +32 30 40.177664388   12.46 10.41 9.15   C8,1Je 202 0
24 HD 34842 ** 05 21 48.92 +32 30 39.8           C8,1Je+B9V 197 0
25 V* S Aur C* 05 27 07.4585545416 +34 08 58.849073880   13.48 8.20     C-N5+ 121 0
26 V* SZ Lep C* 05 35 47.7176157744 -25 44 18.526436052 13.11 9.89 7.59     C-N3.5III 53 0
27 RAFGL 799 C* 05 40 36.9286934424 +13 48 22.396959792       12.24   C8,4J 41 0
28 V* FU Ori Or* 05 45 22.3647842544 +09 04 12.291320064   10.72 9.60     F0Iab 759 1
29 V* QS Ori C* 05 45 36.6961690032 +12 16 15.249183996           C7,4e 24 0
30 IRC +40140 C* 05 47 39.1031835624 +43 12 51.501350484           C 31 0
31 V* AF Aur C* 05 48 44.3736986640 +44 54 36.967027212   13.81 9.63     C4,4 34 0
32 V* AZ Aur C* 06 01 07.2278104488 +39 40 14.199522420   13.20 10.50     C8,2e 59 0
33 RAFGL 865 C* 06 04 00.04728 +07 25 52.0104           C-rich 98 0
34 V* FU Mon S* 06 22 23.8515787464 +03 25 27.887405916 16.86 12.36 9.06     S6.5/7.5 113 1
35 Case 132 C* 06 23 47.8635255384 +08 29 51.254044692           N 23 0
36 V* ZZ Gem C* 06 24 01.2452265672 +25 01 52.889018700   13.58 12.40     C5,3e 66 1
37 V* V Aur C* 06 24 02.3342525640 +47 42 23.854783788   13.40 8.50     C6,2e 58 0
38 V* BL Ori C* 06 25 28.1742350712 +14 43 19.172149392 11.64 8.31 6.00 4.28 2.98 C-N5- 192 0
39 V* V493 Mon C* 06 36 32.6761497240 +09 25 39.300580236   15.80       C 18 1
40 RAFGL 971 C* 06 36 54.2452032888 +03 25 28.696182312       18.4   C5,9e 66 0
41 V* NY Gem C* 06 39 17.7859184832 +22 36 18.344868840   12.53 10.56     C3,1 28 0
42 V* V372 Mon S* 06 41 26.1306263952 -04 35 45.776587524   12.69 9.81     SC7/7.5 34 0
43 V* V503 Mon C* 06 44 57.1486268568 +09 50 47.956586460           C 18 0
44 V* RT Gem Mi* 06 46 34.5176481096 +18 36 53.780877432   12.43 11.26 9.81   C: 18 0
45 V* CG Mon C* 06 51 27.1892582424 +05 13 22.840120272     11.20     C6,2e 30 0
46 V* NP Pup C* 06 54 26.6835568896 -42 21 56.058521256   8.49 6.27 4.55 3.28 C-N4.5 76 0
47 V* V564 Mon C* 06 54 53.5184786520 +10 50 41.221220208           C 16 0
48 V* CL Mon C* 06 55 36.6904592496 +06 22 43.179553200   12.69 11.00     C-J:6 90 0
49 V* RV Mon C* 06 58 21.4892787216 +06 10 01.558277796   10.4 7.47     C4,5 97 1
50 V* U Vol EB* 07 00 22.8190645224 -66 13 00.670188108   11.64 11.46     ~ 4 0
51 V* HV CMa C* 07 05 05.8274900568 -15 00 57.922888572       14.109   C-*6 29 0
52 V* R Vol C* 07 05 36.2081474688 -73 00 52.034502960   14.24 8.70     Ce 81 0
53 V* R CMi S* 07 08 42.6121220544 +10 01 26.458092084   9.65 7.25     SC4-7/10e 155 0
54 RAFGL 1085 C* 07 12 04.0051268952 -20 17 23.124543108       14.43   C 57 0
55 V* VX Gem C* 07 12 48.9705620544 +14 36 03.716151984     10.80     C9,1e 79 0
56 V* BM Gem C* 07 20 59.0073521904 +24 59 58.086063708     11.50     C-J5- 142 1
57 BM IV 9 C* 07 26 15.0215973240 -19 45 24.898608756   16.68 10.89 9.74   C5,4 13 0
58 BM IV 10 C* 07 29 12.5855662656 -19 27 48.659126364   13.44 12.13 10.41 9.44 C 50 0
59 V* GO Pup C* 07 47 37.4963299800 -11 57 10.452741768     12.60     C4,4 31 0
60 V* W CMi C* 07 48 45.5269558104 +05 23 35.392186536 14.32 11.23 8.72     C7,2 42 1
61 MSB 31 C* 07 50 04.0498075704 -00 52 55.285179384   12.50 10.05     C5,5J 26 0
62 C* 918 C* 07 51 13.5861890184 -02 37 10.897180716     12.5     C 34 0
63 V* V768 Mon C* 07 55 44.0775872592 -03 11 53.606921388   12.44 10.25     C6-,4 16 0
64 CD-37 4167 C* 08 02 04.9975175328 -38 11 52.160871228   14.1 10.3     C-J4 48 0
65 V* DN CMi C* 08 09 52.9119733800 +05 03 36.392023872   11.87 9.23     C-N4.5III: 11 1
66 [W71b] 021-06 C* 08 10 48.8849951112 -32 52 05.635358940       15.07 12.76 C 55 0
67 V* RY Hya C* 08 20 06.3208737504 +02 45 56.175135120   12.91 12.20     C-N5+ 58 0
68 V* T Lyn C* 08 22 42.8487504768 +33 31 09.470511768   12.97 8.80     C7,1e_MS2 56 0
69 V* AC Pup C* 08 22 44.1594776472 -15 54 59.375005560   11.8 8.90     C-N5 45 0
70 C* 3287 C* 08 36 27.6518656344 +53 17 51.704986020     11.2     N 8 0
71 V* R Pyx C* 08 45 30.7043451816 -28 12 02.804062968   15.73 10.73 9.70   C 50 0
72 V* UZ Pyx C* 08 46 36.3322686336 -29 43 41.202907140 12.34 9.02 7.17 5.62 4.32 C-J4 75 0
73 V* UW Pyx C* 08 47 00.1527165912 -34 18 59.189654088   13.57 9.69     Ce 32 0
74 V* X Cnc C* 08 55 22.8819374952 +17 13 52.583009880   9.63 6.40 4.29 2.90 C-N4.5 262 1
75 V* T Cnc C* 08 56 40.1375904072 +19 50 56.919947352   12.07 7.60     C-N5 130 1
76 V* IQ Hya C* 09 13 31.8467738832 -23 23 31.462027728   13.70 10.38     C5,2e 49 0
77 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2239 0
78 V* W Sex C* 09 50 58.2500850504 -02 01 43.112392176   11.6 8.87     C6,3 38 0
79 V* Y Hya C* 09 51 03.7177289688 -23 01 02.351120088 17.75 10.45 6.63     C-N4.5III: 108 0
80 V* SZ Car C* 09 59 51.7122271872 -60 13 06.041587944   10.6 10.00     C-N4.5 40 0
81 V* V496 Car LP* 10 10 10.5901890024 -71 04 11.456774508   10.22 8.99     M5III 36 0
82 V* AB Ant C* 10 11 53.8200321000 -35 19 29.049722868   9.16 6.74     C-N4.5III: 43 0
83 V* V597 Car S* 10 18 10.3168168608 -60 59 42.366636420   12.30 9.67     SC 14 0
84 V* CZ Hya C* 10 27 18.0392692104 -25 32 56.305848336   12.44 9.71 10.55   Ce 53 0
85 V* TV Vel C* 10 34 27.8952539952 -54 14 28.280506128   12.71 11.00     Ce 30 0
86 V* U Ant C* 10 35 12.8510147472 -39 33 45.324020448 15.32 8.22 5.38 3.18 1.86 C-N3 142 0
87 V* U Hya C* 10 37 33.2729535 -13 23 04.352923 13.29 7.51 4.82 3.05 1.78 C-N5 291 0
88 V* FU Car C* 10 41 00.2777109816 -59 23 12.604799256     11.20     C 20 0
89 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
90 V* V Hya C* 10 51 37.2615873024 -21 15 00.333928044   12.23 6.80     C-N:6 349 0
91 HD 100764 Pe* 11 35 42.7476078432 -14 35 36.666013272   9.81 8.79 8.08 7.65 C-H2.5 103 0
92 IRAS 11514-5841 C* 11 53 54.61584 -58 58 24.0348     11.30     C-rich 18 1
93 IRAS 12043-6417 C* 12 06 59.8102281840 -64 34 33.629969712           C-rich 11 0
94 V* S Cen C* 12 24 33.9185490504 -49 26 24.728127180 11.92 9.45 7.60     C-R4 46 0
95 V* SS Vir C* 12 25 14.3948245008 +00 46 10.946740368 15.84 10.79 6.60     C-N4.5: 199 1
96 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
97 V* RU Vir C* 12 47 18.4090087128 +04 08 41.356415148   14.75 9.00     C8,1e 169 0
98 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
99 V* V Cru C* 12 56 35.5591929024 -57 53 57.015504924 19.10 15.01 9.81     C 43 0
100 V* UY Cen S* 13 16 31.8299380416 -44 42 15.757651800 14.09 10.03 7.13     S6/8 81 0
101 V* TT Cen S* 13 19 35.0158771776 -60 46 46.295369400     11.50     SC5:/8+ 52 0
102 V* T Mus C* 13 21 13.8460379880 -74 26 30.980302656   10.9 9.40     C-J4.5 47 0
103 V* UX Cen C* 13 22 09.8246825352 -64 13 07.811492592   10.7 10.10     C 34 0
104 V* RV Cen C* 13 37 36.0553362120 -56 28 35.057053308 13.59 9.87 7.00     C-N3 64 0
105 V* AM Cen S* 13 47 17.6163269400 -53 21 25.926046632   11.50 9.20 8.40   SC 39 0
106 HD 121447 Pe* 13 55 46.9655016048 -18 14 56.486226336 11.50 9.61 7.80     C2,1_CH4:_Ba4 120 0
107 V* Z Lup C* 14 35 51.7119765336 -43 22 02.620768728   11.47 10.50     C4,3 37 0
108 V* NW Lib C* 15 04 00.5172798768 -02 51 05.106412440 13.16 11.88 10.46 8.96 7.75 C4,3J 39 0
109 V* X TrA C* 15 14 19.1755012584 -70 04 46.113298104 15.88 9.19 5.81     C5,5 111 0
110 WOS 48 C* 15 23 05.0730770544 -51 25 58.762691652   17.85 16.66 14.51 10.18 C 125 1
111 V* V CrB C* 15 49 31.3121978280 +39 34 17.892629256     6.90     C6,2e_MS3 255 0
112 V* VY Aps S* 16 00 53.6192844792 -74 28 52.929975864   12.48 9.17     SC 23 0
113 V* RR Her C* 16 04 13.4079117672 +50 29 56.991501888   11.32 8.80     SC5.5-C71e 76 0
114 V* V Oph C* 16 26 43.7067710136 -12 25 35.816948688   12.91 7.30     C-N:4 136 0
115 WRAY 18-298 S* 16 42 25.2023682744 -57 33 23.487940152   13.62 10.94     S2,5-SC 17 0
116 V* V TrA C* 16 50 06.5999441904 -67 46 58.127457576   10.57 10.00     C5,5 37 0
117 V* LQ Ara S* 16 51 41.3243239008 -61 01 20.323482996   12.83 10.30     SC 16 0
118 [W71b] 128-04 C* 16 58 06.2889200808 -42 19 23.835657828   16.4 14.4     C 20 0
119 V* SZ Ara C* 17 11 07.3812490272 -61 57 15.206752476   12.17 11.00     R 30 0
120 V* V617 Sco C* 17 13 41.0980576704 -35 55 21.165808908   13.25 11.26     C 24 0
121 V* V Pav C* 17 43 18.9398256336 -57 43 26.289782112   10.11 6.673 7.14 8.88 C6,4 64 0
122 V* T Dra C* 17 56 23.3288487384 +58 13 06.783372804   18.08 7.20     C6,2e 182 0
123 MSB 63 C* 18 10 27.9473748912 -26 51 57.916123704     12.30     C7,2 37 0
124 V* AC Her pA* 18 30 16.2373118976 +21 52 00.599340000 8.00 7.79 7.01     F4Ibp 325 0
125 V* S Sct C* 18 50 20.0367791256 -07 54 27.429169356 13.93 9.89 6.80     C-N5 202 0
126 V* AI Sct C* 18 50 52.4253932928 -06 44 23.185801536     12     C8,2e 26 0
127 V* VX Aql S* 19 00 09.6081225960 -01 34 56.720264268   15.23 12.20     SC5/8e 67 0
128 BD+10 3764 C* 19 02 15.1815009648 +10 14 24.678369276   14.38 9.45 8.91   SC6:/9e 35 0
129 Case 181 C* 19 03 18.4284440280 +07 30 45.340262352     14.22 14.77   C 69 0
130 V* U Lyr C* 19 20 09.1516147560 +37 52 36.919225776   12.93 8.30   7.616 C4,5e 70 1
131 IRC -10502 C* 19 20 18.1200757128 -08 02 12.063360120       13.22 10.59 C5,4e 69 0
132 V* V1421 Aql C* 19 27 14.7581047608 +07 04 12.671205564     14.30 14.69   C7,3e 47 0
133 HD 189605 C* 20 01 05.1826294416 -07 21 51.922979532   12.51 10.21     C5,5 39 0
134 Case 635 C* 20 10 19.4862923160 +29 20 09.136425768           C 19 0
135 V* R Cap C* 20 11 18.3460558416 -14 16 03.372758040   13.91 10.33     Ce 39 0
136 V* RT Cap C* 20 17 06.5287791168 -21 19 04.466353512   12.92 8.90     C6,4 121 0
137 V* WX Cyg C* 20 18 33.2742966672 +37 26 59.080236792   12.95 8.80     C-J6 129 0
138 V* U Cyg C* 20 19 36.5946317760 +47 53 39.096681828   11.85 5.90     C9,2e 229 0
139 MSB 38 C* 20 36 07.3864144104 +60 05 26.039264496   13.98 9.86 10.3   C-J4+ 119 0
140 V* BD Vul C* 20 37 17.8441353648 +26 29 13.104050028   14.21 10.68 8.74   C5,2e 34 0
141 V* V Cyg C* 20 41 18.2676815496 +48 08 28.810980420   14.05 7.70     C7,4eJ 298 0
142 V* CY Cyg S* 20 46 50.2447266864 +46 03 06.930770400   10.82 11.00     SC2_Zr0 55 0
143 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 853 1
144 V* RV Aqr C* 21 05 51.7376905368 -00 12 42.121057536     11.5     C6,3e 100 0
145 V* T Ind C* 21 20 09.4835040168 -45 01 18.808630176 12.08 8.33 6.00     C7,2 86 0
146 LEE 228 C* 21 34 07.4785393032 +39 04 15.918662712   16.72 11.90     C7,2e 110 0
147 V* S Cep C* 21 35 12.8233100592 +78 37 28.185141792   12.13 7.40     C7,3e 254 0
148 LEE 338 C* 21 44 28.7966422416 +73 38 04.892089668   13.27 9.82 8.47   C6-,3e 55 0
149 V* RZ Peg Mi* 22 05 52.9706535288 +33 30 24.810555528   11.40 7.60     SC5-9/9-e 151 0
150 Case 252 C* 22 31 55.7114995128 +55 44 29.232945168           N 11 0
151 V* MW Cep C* 22 51 18.8823406800 +60 34 36.076909188           N 23 0
152 RAFGL 3068 C* 23 19 12.60744 +17 11 33.1332           C 262 0
153 V* EU And C* 23 19 58.8818386848 +47 14 34.575341784   12.84 10.38     C-J5- 88 0
154 RAFGL 3099 C* 23 28 17.1145171968 +10 54 37.402209036           C-rich 89 0
155 IRC +40540 C* 23 34 27.5185864392 +43 33 01.323347256     15.12     C8,3.5eJ 174 0

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2022.05.20-06:36:16

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