1998A&A...338..209A

Query : 1998A&A...338..209A

1998A&A...338..209A - Astronomy and Astrophysics, volume 338, 209-216 (1998/10-1)

Absolute magnitudes of carbon stars from Hipparcos parallaxes.

ALKSNIS A., BALKLAVS A., DZERVITIS U. and EGLITIS I.

Abstract (from CDS):

Hipparcos trigonometric parallaxes and photometric data for about 40 bright carbon stars have been analysed. Individual absolute visual and bolometric magnitudes, normal color indices (B-V)0, absorption values and distance moduli were determined. By comparison with stellar evolutionary tracks for initial mass 1≤M/M☉≤4 it is found that the majority of CH- and R-stars are on the giant and subgiant branches, but N-stars occupy a region -4<MV←1 and 1.6<(B-V)0<3.6 and correspond to an advanced stage of thermally pulsing asymptotic branch giants. Previous absolute magnitude estimates, especially those from statistical parallaxes, are confirmed by Hipparcos. Using Hipparcos parallaxes and proper motions, three multiple stars with a carbon star component are examined. Hipparcos data confirms a physical link between W CMa and HD 54306 (B2V), both probable members of the association CMa OB1. Some stars are located below the subgiant branch for the mass 1M☉ and a number of the N stars are below the theoretical limit for carbon stars on the AGB.

Abstract Copyright: ∼

Journal keyword(s): stars: carbon - stars: fundamental parameters

Simbad objects: 47

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Number of rows : 47
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* WZ Cas C* 00 01 15.8567946264 +60 21 19.025920224 8.77 9.47 7.13     C-N7III: 315 0
2 V* R Scl C* 01 26 58.0939182720 -32 32 35.439234828 17.26 9.59 5.72 3.69 2.30 C-N5+ 332 0
3 V* V Ari LP? 02 15 00.0771848760 +12 14 23.612094312   10.8 9.80     C-H3.5 106 0
4 NGC 1252 err 03 10 49 -57 46.0           ~ 37 0
5 V* TW Hor C* 03 12 33.1599109680 -57 19 17.577229512   7.93 5.71 3.78 2.40 C-N5IIIb: 136 0
6 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
7 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
8 V* V431 Ori C* 05 15 57.7328743968 +11 58 40.007848836   15.18 9.90 8.89   C5,5 49 1
9 V* SZ Lep C* 05 35 47.7176157744 -25 44 18.526436052 13.11 9.89 7.59     C-N3.5III 57 0
10 V* HX Gem C* 06 31 39.7425542904 +16 06 52.198876368   13.34 10.49     C4,4 35 0
11 V* UU Aur C* 06 36 32.8371036984 +38 26 43.819021608   7.89 5.25 3.31 1.90 C-N5- 304 1
12 Ass CMa OB 1 As* 07 07.0 -10 28           ~ 150 0
13 HD 54306 * 07 07 52.9183615704 -11 54 50.419539612 8.12 8.74 8.72     B2III 49 0
14 V* W CMa C* 07 08 03.4360567560 -11 55 23.796162984 13.44 8.98 6.56 4.86 3.51 C-N5 124 0
15 CD-38 3714 C* 07 50 34.3342986888 -38 47 39.405644376   13.14 10.28 9.80 8.76 C 15 0
16 HD 65424 C* 07 56 20.8068826896 -49 58 55.062788088   11.2 7.78     C-N4.5 41 0
17 V* T Lyn C* 08 22 42.8487504768 +33 31 09.470511768   12.97 8.80 9.22   C7,1e_MS2 64 0
18 HD 75022 * 08 46 34.9578209928 -29 45 30.030319044   9.11 7.61     K2+IIb:Ba0.3: 25 0
19 V* UZ Pyx C* 08 46 36.3322686336 -29 43 41.202907140 12.34 9.02 7.17 5.62 4.32 C-J4 80 0
20 HD 76396 SB* 08 57 58.9267711584 +51 25 47.661787776   9.96 8.85 8.5   C-H2IV: 66 0
21 V* Y Hya C* 09 51 03.7177289688 -23 01 02.351120088 17.75 10.45 6.63     C-N4.5III: 114 0
22 V* AB Ant C* 10 11 53.8200321000 -35 19 29.049722868   9.16 6.74     C-N4.5III: 46 0
23 V* U Ant C* 10 35 12.8510147472 -39 33 45.324020448 15.32 8.22 5.38 3.18 1.86 C-N3 153 0
24 V* U Hya C* 10 37 33.2729535 -13 23 04.352923 13.29 7.51 4.82 3.05 1.78 C-N5 302 0
25 V* VY UMa C* 10 45 04.0305312384 +67 24 40.979062260 12.91 8.34 5.95 4.20 2.94 C-N5 201 0
26 BD+42 2173 SB* 11 00 00.4406056824 +41 36 07.894442412   11.4 10.08     C3,2_CH4 43 0
27 HD 97578 C* 11 13 12.3223685952 -48 13 30.207196200   11.6 10.06     C-J4 24 0
28 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
29 HD 111908 SB* 12 52 29.4193997016 +07 12 28.535757156   10.42 9.31     C2,1_CH5 50 0
30 AG+07 1684 * 12 52 31.4169053280 +07 12 04.159195056   11.5 10.7     F6V 20 0
31 AG+07 1685 * 12 52 31.6410574200 +07 12 30.389362344   10.66 9.20     K5III 12 0
32 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
33 V* X TrA C* 15 14 19.1755012584 -70 04 46.113298104 15.88 9.19 5.81     C5,5 120 0
34 HD 156074 C* 17 13 31.2405544440 +42 06 22.768253820 9.67 8.75 7.61 6.89 6.42 C-R2III 125 0
35 V* V Pav C* 17 43 18.9398256336 -57 43 26.289782112   10.11 6.673 7.14 8.88 C6,4 69 0
36 BD+17 3325 Pe* 17 45 42.7801177728 +17 12 51.677074188 11.04 9.91 8.73 7.92 7.33 C2,0+_CH4: 36 0
37 V* SX Sco C* 17 47 28.2369310416 -35 42 04.601718324   11.3 10.50     C-N5 55 0
38 V* FO Ser C* 18 19 21.8140286424 -15 36 46.063194012 12.55 10.55 8.66 6.96 5.53 C-J4+ 62 0
39 V* UX Dra C* 19 21 35.5182299784 +76 33 34.557161688   8.81 5.94     C-N5 200 0
40 V* U Cyg C* 20 19 36.5946317760 +47 53 39.096681828   11.85 5.90 7.09   C9,2e 236 0
41 HD 193700 V* 20 19 41.6526135360 +47 54 19.917813924   8.66 7.86     G0 12 0
42 HD 198269 SB* 20 48 36.7391782248 +17 50 23.718943680   9.41 8.12     C-H3IV: 84 0
43 BD+02 4338 C* 21 19 02.5555583208 +03 14 31.039471392   11.1 9.78     C3,2 33 0
44 V* RZ Peg Mi* 22 05 52.9706535288 +33 30 24.810555528   11.40 7.60 7.89   SC5-9/9-e 159 0
45 * 19 Psc C* 23 46 23.5164473376 +03 29 12.519049272 10.95 7.62 5.02 3.19 1.82 C-N6 450 0
46 NGC 7789 OpC 23 57 20.2 +56 43 34   7.68 6.7     ~ 528 0
47 MSB 75 C* 23 59 05.5707514152 +56 58 15.343195872   12.16 10.71 9.47   C6,3e 37 0

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