2007A&A...467..283L


Query : 2007A&A...467..283L

2007A&A...467..283L - Astronomy and Astrophysics, volume 467, 283-294 (2007/5-3)

Detailed chemical composition of Galactic Cepheids. A determination of the Galactic abundance gradient in the 8-12 kpc region.

LEMASLE B., FRANCOIS P., BONO G., MOTTINI M., PRIMAS F. and ROMANIELLO M.

Abstract (from CDS):

The recent introduction of high-resolution/large spectral-range spectrographs has provided the opportunity to investigate the chemical composition of classical Cepheids in detail. This paper focusses on new abundance determinations for iron and 6 light metals (O, Na, Mg, Al, Si, Ca) in 30 Galactic Cepheids. We also give a new estimate of the Galactic radial abundance gradient. The stellar effective temperatures were determined using the method of line depth ratios, and the surface gravity and the microturbulent velocity vt by imposing the ionization balance between Fe I and Fe II with the help of curves of growth. Abundances were calculated with classical LTE atmosphere models. Abundances were obtained with rms accuracies of about 0.05-0.10dex for Fe, and 0.05-0.20dex for the other elements. Cepheids in our sample have solar-like abundances, and current measurements agree quite well with previous determinations. We computed ``single zone'' Galactic radial abundance gradients for the 8-12kpc region and found a slope for iron of -0.061dex/kpc.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: supergiants - Galaxy: abundances - Galaxy: evolution

Simbad objects: 99

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Number of rows : 99
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* SU Cas cC* 02 51 58.7508894403 +68 53 18.601570075 6.92 6.44 5.80     F5.5III+ 412 1
2 V* SZ Tau cC* 04 37 14.7778803229 +18 32 34.929341041 7.65 7.13 6.37     F6.7:Ib 292 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15461 1
4 * bet Dor cC* 05 33 37.5125319201 -62 29 23.323100433 5.13 4.58 3.76 3.55 3.12 F8/G0Ib 355 0
5 V* ST Tau cC* 05 45 03.1601683809 +13 34 34.903166002   9.13 7.79   7.149 G0 120 0
6 V* EU Tau cC* 05 45 40.5287885881 +18 39 24.820727851   8.71 8.08     G5 108 0
7 V* RZ Gem cC* 06 02 36.5872523443 +22 14 02.947734335   10.83 9.91 9.68 8.679 F5 113 0
8 V* GQ Ori cC* 06 11 13.5830093624 +09 36 44.986218991   9.81 8.88   7.869 B 76 1
9 V* SV Mon cC* 06 21 26.3051049461 +06 28 12.577938993   9.32 8.28     G1Ib 163 0
10 V* T Mon cC* 06 25 12.9997562821 +07 05 08.561189768 8.24 7.20 5.98   4.996 G3Iabv+A0p 451 1
11 * 48 Aur cC* 06 28 34.0875086 +30 29 34.914168 6.73 6.23 5.55   4.777 F5.5-G0Ib 367 0
12 V* W Gem cC* 06 34 57.4524314200 +15 19 49.698631280 7.79 7.25 6.54   5.908 F5-G1 205 0
13 V* CV Mon cC* 06 37 04.8448658715 +03 03 50.276498200   11.32 9.90   8.631 ~ 219 0
14 V* AD Gem cC* 06 43 07.5116892124 +20 56 20.801766765   10.42 9.80   9.044 F5 99 0
15 * zet Gem cC* 07 04 06.5307903 +20 34 13.073871 5.20 4.58 3.79   3.082 G1Ib 543 0
16 V* RY CMa cC* 07 16 37.6358131162 -11 29 14.298952423   8.99 8.19   7.133 F8Ib/II 149 0
17 V* RZ CMa cC* 07 21 32.8572494264 -16 41 14.000346928   10.75 9.72   8.477 F6 87 0
18 V* TW CMa cC* 07 22 02.3794845665 -14 19 05.497464410   10.40 9.59   8.429 F5 94 0
19 V* VX Pup Ce* 07 32 36.6488974993 -21 55 49.531917879   9.87 9.32 8.97   F3IV 129 0
20 V* X Pup cC* 07 32 47.0329487912 -20 54 34.881653031   9.56 8.46   7.143 K0 167 0
21 * y03 Pup cC* 07 38 18.2087613998 -48 36 05.159134325   6.314 5.658 6.94   F7Ib/II 109 0
22 V* VZ Pup cC* 07 38 35.2380584126 -28 29 58.597876520   11.469 10.154 9.583   F7.5 136 1
23 V* WX Pup cC* 07 41 59.0037016642 -25 52 34.251072461   9.99 9.09   7.944 G0 102 0
24 V* AD Pup cC* 07 48 03.8513966553 -25 34 40.023144556   10.81 9.99     F8 95 0
25 V* AP Pup cC* 07 57 45.6728882268 -40 07 24.079693723   8.13 7.37   6.462 F8II 117 0
26 V* AQ Pup cC* 07 58 22.0887170720 -29 07 48.335325928   9.70 8.54   7.175 F5-G2Ib 183 0
27 V* LS Pup cC* 07 58 59.2197671330 -29 18 28.357057956   11.75 10.59 9.88 8.933 ~ 80 0
28 V* BN Pup cC* 08 06 21.4748690781 -30 05 48.768197196   10.99 9.75 8.97 8.981 G4 111 0
29 V* AX Vel cC* 08 10 49.3237950601 -47 41 54.827371638   8.78 8.16     F6II 117 0
30 V* AH Vel cC* 08 11 59.9670207132 -46 38 39.656138625   6.35 5.76     F7Ib/II 165 0
31 V* AT Pup cC* 08 12 22.4032077457 -36 56 37.530066706   8.83 8.07   7.085 F5 121 0
32 V* RS Pup cC* 08 13 04.2157137938 -34 34 42.691837063 8.89 8.51 7.04   5.453 F8Iab 328 0
33 V* V Car cC* 08 28 43.6942334868 -60 07 21.267286180   8.14 7.31   6.432 F8Ib/II 131 0
34 V* RZ Vel cC* 08 37 01.3029337589 -44 06 52.844429407   8.507 7.260     G1Ib 206 0
35 V* T Vel cC* 08 37 40.8268486937 -47 21 43.082343785   8.92 7.68   6.970 G0II 156 0
36 V* SW Vel cC* 08 43 38.6904013543 -47 24 11.196771088   9.58 8.32     F8/G0Ib 173 0
37 V* SX Vel cC* 08 44 53.4688984489 -46 20 34.732806621   9.19 8.33   7.264 F8II 123 0
38 V* ST Vel cC* 08 44 55.8932351877 -50 33 36.140752245   10.89 9.69   8.294 K 71 0
39 V* V Vel cC* 09 22 16.1681614743 -55 57 37.150827133   8.29 7.57   6.695 F8II 128 0
40 V* DR Vel cC* 09 31 40.9750564992 -49 39 18.019202295   10.50 9.25     ~ 76 0
41 V* V397 Car cC* 10 00 03.6928250252 -66 16 34.475151549   9.07 8.29     F8Ib/II 44 0
42 V* RY Vel cC* 10 20 41.0317627466 -55 19 17.035924264   9.71 7.86   6.840 F5Ib/II 136 0
43 V* AQ Car cC* 10 21 22.9755883634 -61 04 26.734361226   9.73 8.84     F8/G0Ib 104 0
44 V* UX Car cC* 10 29 11.2428716500 -57 36 48.245099584 9.81 9.36 8.62   7.559 F2II 126 0
45 V* VY Car cC* 10 44 32.6908129391 -57 33 55.326019898 8.12 7.70 6.87   6.299 F7Iab/b 202 0
46 V* WZ Car cC* 10 55 18.7272542108 -60 56 23.951208594   10.40 9.37     F8 136 0
47 V* U Car cC* 10 57 48.1866898409 -59 43 55.880151632 8.31 7.21 6.11   5.073 G5/8Iab 218 0
48 V* UU Mus cC* 11 52 17.7225421742 -65 24 15.060675590   10.5 9.54     F7/G0p 122 0
49 V* S Mus cC* 12 12 47.0194644681 -70 09 06.436474127 7.58 8.80 8.33 7.39 5.196 F6Ib+B5V 243 0
50 * 35 Cru cC* 12 31 40.3301092383 -59 25 26.122369782 6.60 6.19 5.53     F7Ib/II 132 0
51 V* VW Cen cC* 13 33 59.0299132697 -64 03 19.999430004   11.60 10.36   8.785 ~ 110 0
52 V* KN Cen cC* 13 36 36.8945451169 -64 33 29.916343439   11.22 9.86     G8Iab+B6.0V 130 0
53 V* XX Cen cC* 13 40 18.6446943543 -57 36 47.444003198   8.72 7.30   6.747 F7/8II 176 0
54 V* V Cen cC* 14 32 33.0828020969 -56 53 15.774776152 8.44 7.84 6.93   5.798 F5Ib/II 249 0
55 V* GH Lup Ce* 15 24 38.3402443807 -52 51 13.896895820 10.03 9.05 7.83     G2Iab 90 0
56 V* U Nor cC* 15 42 20.9180199642 -55 18 42.941765163   10.68 9.22     F8Ib/II 131 0
57 V* V340 Nor cC* 16 13 17.3998357878 -54 14 05.588347830   9.61 8.47 8.83   G2Iab 140 0
58 V* S Nor cC* 16 18 51.8313333962 -57 53 59.253617873 8.15 7.49 6.49   5.427 F8/G0Ib 350 1
59 V* V340 Ara cC* 16 45 19.1122888146 -51 20 33.394152547   11.39 10.03     ~ 71 0
60 V* KQ Sco cC* 16 51 38.5473466715 -45 25 36.105341336 12.37 10.69 9.31     K7 123 0
61 V* RV Sco cC* 16 58 19.7477520846 -33 36 32.766711098 7.79 7.37 6.61   5.909 G0Ib 183 0
62 V* BF Oph cC* 17 06 05.4979763004 -26 34 50.031704299 8.00 7.61 6.93   6.377 G0II 208 0
63 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12299 0
64 V* V500 Sco cC* 17 48 37.5007852193 -30 28 33.460678490   10.07 8.81   7.191 K0 116 0
65 V* RY Sco cC* 17 50 52.3454231474 -33 42 20.410667234 9.77 8.79 7.51   6.256 F6Ib 174 0
66 V* Y Oph cC* 17 52 38.7021149511 -06 08 36.875163136 8.62 7.61 6.21     G3Ia 348 0
67 V* AU Sgr EB* 18 04 27.7157135945 -22 59 57.813558751           ~ 5 0
68 * gam01 Sgr cC* 18 05 01.2265190154 -29 34 48.303215344 5.99 5.47 4.69   3.869 G0Ib/II 332 0
69 V* VY Sgr cC* 18 12 04.5660706883 -20 42 14.465377948   12.70 11.36     F6 67 0
70 * 12 Sgr cC* 18 13 02.4957702081 -23 07 02.200799106 8.06 7.48 6.59   6.057 F7/8Ib/II 178 0
71 V* WZ Sgr cC* 18 16 59.7158915244 -19 04 32.989119557   9.10 7.45     F7(III) 234 0
72 V* Y Sgr cC* 18 21 22.9864295 -18 51 36.001763 7.31 6.69 5.75   4.810 F8II 275 0
73 V* UZ Sct cC* 18 31 22.3666774568 -12 55 43.338736715   13.23 10.91   9.195 G0 80 0
74 V* U Sgr cC* 18 31 53.3321808602 -19 07 30.262730218 8.50 7.81 6.68   5.413 G1Ib 440 0
75 V* V367 Sct cC* 18 33 35.2353194475 -10 25 38.130057884   13.34 11.580     ~ 158 0
76 V* BQ Ser cC* 18 36 15.9376665154 +04 23 53.692279873   10.49 9.21     F5III 101 0
77 V* EW Sct cC* 18 37 51.1111080562 -06 47 48.495390706   9.50 7.96     F8Ib/II 102 0
78 V* SS Sct cC* 18 43 43.5114066939 -07 43 51.958881260   9.29 7.90   7.100 F8II 165 0
79 V* V350 Sgr cC* 18 45 17.4962010593 -20 38 50.571706956   8.321 7.450 8.41 6.421 F8Ib/II 202 0
80 V* BB Sgr cC* 18 50 59.8730479535 -20 17 42.828317888 8.07 7.53 6.69   5.824 G0Ib 238 0
81 V* SZ Aql cC* 19 04 39.4159911509 +01 18 22.156017960   9.92 7.92   7.039 F8/G0Ib 177 0
82 V* TT Aql cC* 19 08 13.7497120770 +01 17 55.146226298 8.96 7.86 6.50   5.699 G0/2Ib 266 0
83 V* V496 Aql cC* 19 08 20.7712150568 -07 26 15.882592498   8.88 7.79     F8/G0Iab/b 166 0
84 V* FM Aql cC* 19 09 15.9901683300 +10 33 08.958768391 9.76 9.05 7.89   6.725 F2I 175 0
85 V* FN Aql cC* 19 12 47.3150076412 +03 33 26.704507437   9.58 7.96     F8/G0Iab/b 171 0
86 V* U Vul cC* 19 36 37.7280897633 +20 19 58.569232928   8.368 7.162   5.556 F8Iab 216 0
87 V* S Vul cC* 19 48 23.8064092484 +27 17 11.426469538   11.392 9.551 8.775   K0 178 0
88 V* SV Vul cC* 19 51 30.9059608126 +27 27 36.835645654 8.65 9.00 6.74   5.703 F8Ia 406 0
89 V* V1162 Aql cC* 19 52 20.9909064920 -11 22 00.757174772   8.73 7.81     G2Ib 79 0
90 * eta Aql cC* 19 52 28.3677478 +01 00 20.369619 5.12 4.61 3.80   3.030 F6Iab+B9.8V 644 0
91 * 10 Sge cC* 19 56 01.2614273274 +16 38 05.236276391 6.45 6.03 5.36 6.81 4.789 F7Ib 333 0
92 V* X Cyg cC* 20 43 24.1918662954 +35 35 16.075732392 8.69 7.70 6.47   5.241 F7Ib 445 0
93 V* T Vul cC* 20 51 28.2382502598 +28 15 01.816605372 6.89 6.49 5.77   5.061 F5Ib+A0.8V 325 0
94 V* VZ Cyg cC* 21 51 41.4415144699 +43 08 02.538005456   10.02 8.60   7.948 G0 159 0
95 V* BG Lac cC* 22 00 25.1468672171 +43 26 43.329596739   9.33 8.59   7.793 G0.7 141 0
96 V* Y Lac cC* 22 09 02.8999210254 +51 02 45.083169239   9.79 9.13   8.292 F8 162 0
97 * del Cep cC* 22 29 10.2650184 +58 24 54.713856 4.71 4.35 3.75   3.219 F5Iab:+B7-8 692 0
98 V* Z Lac cC* 22 40 52.1456104219 +56 49 46.083960286   9.71 8.57   7.164 F6Ib 215 0
99 V* X Lac cC* 22 49 03.1806947647 +56 25 41.530855473   9.21 8.42     G5 160 0

    Equat.    Gal    SGal    Ecl

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2021.07.25-18:04:15

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