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 - 2024 		#notes
1 V* SU Cas cC* 02 51 58.7511911208 +68 53 18.606894036 6.92 6.44 5.80     F5.5III+ 424 1
2 V* SZ Tau cC* 04 37 14.7776556504 +18 32 34.926940860 7.65 7.13 6.37     F6.7:Ib 305 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17432 0
4 * bet Dor cC* 05 33 37.5159729864 -62 29 23.376457680 5.13 4.58 3.76 3.55 3.12 F8/G0Ib 377 0
5 V* ST Tau cC* 05 45 03.1603367712 +13 34 34.903715808   9.13 7.79   7.149 G0 132 0
6 V* EU Tau cC* 05 45 40.5288555072 +18 39 24.819950988   8.71 8.08     G5 118 0
7 V* RZ Gem cC* 06 02 36.5871685272 +22 14 02.948725104   10.83 9.91 9.68 8.679 F5 122 0
8 V* GQ Ori cC* 06 11 13.5830023776 +09 36 44.985287232   9.81 8.88   7.869 B 84 1
9 V* SV Mon cC* 06 21 26.3049089544 +06 28 12.578441700   9.32 8.28     G1Ib 174 0
10 V* T Mon cC* 06 25 12.9996760920 +07 05 08.558582892 8.24 7.20 5.98   4.996 G3Iabv+A0p 464 1
11 * 48 Aur cC* 06 28 34.0881845487 +30 29 34.929596860 6.73 6.23 5.55   4.777 F5.5-G0Ib 382 0
12 V* W Gem cC* 06 34 57.4524971712 +15 19 49.696329540 7.79 7.25 6.54   5.908 F5-G1 213 0
13 V* CV Mon cC* 06 37 04.8449178072 +03 03 50.274557532   11.32 9.90   8.631 ~ 240 0
14 V* AD Gem cC* 06 43 07.5117403056 +20 56 20.799066228   10.42 9.80   9.044 F5 107 0
15 * zet Gem cC* 07 04 06.5312384690 +20 34 13.074474962 5.20 4.58 3.79   3.082 G1Ib 569 0
16 V* RY CMa cC* 07 16 37.6357128312 -11 29 14.299158552   8.99 8.19   7.133 F8Ib/II 160 0
17 V* RZ CMa cC* 07 21 32.8571936928 -16 41 13.998801084   10.75 9.72   8.477 F6 98 0
18 V* TW CMa cC* 07 22 02.3794130112 -14 19 05.498697540   10.40 9.59   8.429 F5 105 0
19 V* VX Pup cC* 07 32 36.6489773592 -21 55 49.534161528   9.87 9.32 8.97   F3IV 138 0
20 V* X Pup cC* 07 32 47.0329137816 -20 54 34.884361152   9.56 8.46   7.143 K0 181 0
21 * y03 Pup cC* 07 38 18.2084341776 -48 36 05.164557768   6.314 5.658 6.94   F7Ib/II 118 0
22 V* VZ Pup cC* 07 38 35.2380326136 -28 29 58.597431036   11.469 10.154 9.583   F7.5 148 1
23 V* WX Pup cC* 07 41 59.0037418728 -25 52 34.252471632   9.99 9.09   7.944 G0 115 0
24 V* AD Pup cC* 07 48 03.8512427256 -25 34 40.024315488   10.81 9.99     F8 110 0
25 V* AP Pup cC* 07 57 45.6725424768 -40 07 24.082195800   8.13 7.37   6.462 F8II 124 0
26 V* AQ Pup cC* 07 58 22.0887499032 -29 07 48.338631084   9.70 8.54   7.175 F5-G2Ib 198 0
27 V* LS Pup cC* 07 58 59.2197041640 -29 18 28.358867700   11.75 10.59 9.88 8.933 ~ 97 0
28 V* BN Pup cC* 08 06 21.4750343856 -30 05 48.770958372   10.99 9.75 8.97 8.981 G4 125 0
29 V* AX Vel cC* 08 10 49.3236457224 -47 41 54.828934332   8.78 8.16     F6II 121 0
30 V* AH Vel cC* 08 11 59.9667243312 -46 38 39.658236936   6.35 5.76     F7Ib/II 174 0
31 V* AT Pup cC* 08 12 22.4030911320 -36 56 37.533017184   8.83 8.07   7.085 F5 131 0
32 V* RS Pup cC* 08 13 04.2157111224 -34 34 42.696447852 8.89 8.51 7.04   5.453 F8Iab 347 0
33 V* V Car cC* 08 28 43.6940477208 -60 07 21.268842960   8.14 7.31   6.432 F8Ib/II 144 0
34 V* RZ Vel cC* 08 37 01.3028699904 -44 06 52.846248456   8.507 7.260     G1Ib 224 0
35 V* T Vel cC* 08 37 40.8266515248 -47 21 43.084440432   8.92 7.68   6.970 G0II 170 0
36 V* SW Vel cC* 08 43 38.6903528472 -47 24 11.200999464   9.58 8.32     F8/G0Ib 184 0
37 V* SX Vel cC* 08 44 53.4685905720 -46 20 34.736412696   9.19 8.33   7.264 F8II 135 0
38 V* ST Vel cC* 08 44 55.8931278528 -50 33 36.141820956   10.89 9.69   8.294 K 81 0
39 V* V Vel cC* 09 22 16.1680205928 -55 57 37.153892448   8.29 7.57   6.695 F8II 136 0
40 V* DR Vel cC* 09 31 40.9749230568 -49 39 18.022694328   10.50 9.25     ~ 88 0
41 V* V397 Car cC* 10 00 03.6928372248 -66 16 34.477656528   9.07 8.29     F8Ib/II 50 0
42 V* RY Vel cC* 10 20 41.0315888064 -55 19 17.028180084   9.71 7.86   6.840 F5Ib/II 148 0
43 V* AQ Car cC* 10 21 22.9751846448 -61 04 26.737119948   9.73 8.84     F8/G0Ib 114 0
44 V* UX Car cC* 10 29 11.2428781344 -57 36 48.246072156 9.81 9.36 8.62   7.559 F2II 138 0
45 V* VY Car cC* 10 44 32.6909254176 -57 33 55.327074480 8.12 7.70 6.87   6.299 F7Iab/b 218 0
46 V* WZ Car cC* 10 55 18.7271183664 -60 56 23.951331672   10.40 9.37     F8 149 0
47 V* U Car cC* 10 57 48.1866744768 -59 43 55.883482140 8.31 7.21 6.11   5.073 G5/8Iab 230 0
48 V* UU Mus cC* 11 52 17.7227171832 -65 24 15.063278652   10.5 9.54     F7/G0p 134 0
49 V* S Mus cC* 12 12 47.0199008472 -70 09 06.439196664 7.58 8.80 8.33 7.39 5.196 F6Ib+B5V 258 0
50 * 35 Cru cC* 12 31 40.3303562544 -59 25 26.124690324 6.60 6.19 5.53     F7Ib/II 140 0
51 V* VW Cen cC* 13 33 59.0300715216 -64 03 19.999348524   11.60 10.36   8.785 ~ 125 0
52 V* KN Cen cC* 13 36 36.8950655064 -64 33 29.914949592   11.22 9.86     G8Iab+B6.0V 143 0
53 V* XX Cen cC* 13 40 18.6439597656 -57 36 47.440376532   8.72 7.30   6.747 F7/8II 190 0
54 V* V Cen cC* 14 32 33.0833481288 -56 53 15.774129600 8.44 7.84 6.93   5.798 F5Ib/II 274 0
55 V* GH Lup cC* 15 24 38.3402056752 -52 51 13.897364040 10.03 9.05 7.83     G2Iab 98 0
56 V* U Nor cC* 15 42 20.9185773096 -55 18 42.939346104   10.68 9.22     F8Ib/II 146 0
57 V* V340 Nor cC* 16 13 17.3997630552 -54 14 05.586545400   9.61 8.47 8.83   G2Iab 160 1
58 V* S Nor cC* 16 18 51.8316855000 -57 53 59.256000852 8.15 7.49 6.49   5.427 F8/G0Ib 374 1
59 V* V340 Ara cC* 16 45 19.1125726896 -51 20 33.393735924   11.39 10.03     ~ 83 0
60 V* KQ Sco cC* 16 51 38.5473559392 -45 25 36.101286516 12.37 10.69 9.31     K7 135 0
61 V* RV Sco cC* 16 58 19.7480002088 -33 36 32.767208444 7.79 7.37 6.61   5.909 G0Ib 194 0
62 V* BF Oph cC* 17 06 05.4979834752 -26 34 50.029842576 8.00 7.61 6.93   6.377 G0II 217 0
63 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14414 0
64 V* V500 Sco cC* 17 48 37.5008772936 -30 28 33.459985200   10.07 8.81   7.191 K0 127 0
65 V* RY Sco cC* 17 50 52.3447976064 -33 42 20.412288432 9.77 8.79 7.51   6.256 F6Ib 188 0
66 V* Y Oph cC* 17 52 38.7019050072 -06 08 36.874071816 8.62 7.61 6.21     G3Ia 364 0
67 V* AU Sgr EB* 18 04 27.7154254224 -22 59 57.816544020           ~ 5 0
68 * gam01 Sgr cC* 18 05 01.2264355704 -29 34 48.322222356 5.99 5.47 4.69   3.869 G0Ib/II 348 0
69 V* VY Sgr cC* 18 12 04.5659242512 -20 42 14.462412336   12.70 11.36     F6 74 0
70 * 12 Sgr cC* 18 13 02.4957687048 -23 07 02.201380968 8.06 7.48 6.59   6.057 F7/8Ib/II 190 0
71 V* WZ Sgr cC* 18 16 59.7160721616 -19 04 32.989734840   9.10 7.45     F7(III) 252 0
72 V* Y Sgr cC* 18 21 22.9862401944 -18 51 36.006450458 7.31 6.69 5.75   4.810 F8II 289 0
73 V* UZ Sct cC* 18 31 22.3668789696 -12 55 43.335648156   13.23 10.91   9.195 G0 87 0
74 V* U Sgr cC* 18 31 53.3323107600 -19 07 30.261459540 8.50 7.81 6.68   5.413 G1Ib 467 0
75 V* V367 Sct cC* 18 33 35.2353033192 -10 25 38.126250552   13.34 11.580     F7Ib 175 0
76 V* BQ Ser cC* 18 36 15.9375844368 +04 23 53.693400840   10.49 9.21     F5III 108 0
77 V* EW Sct cC* 18 37 51.1112159832 -06 47 48.494842332   9.50 7.96     F8Ib/II 110 0
78 V* SS Sct cC* 18 43 43.5111680040 -07 43 51.957172704   9.29 7.90   7.100 F8II 176 0
79 V* V350 Sgr cC* 18 45 17.4968424336 -20 38 50.552766852   8.321 7.450 8.41 6.421 F8Ib/II 217 0
80 V* BB Sgr cC* 18 50 59.8729954248 -20 17 42.829838520 8.07 7.53 6.69   5.824 G0Ib 255 0
81 V* SZ Aql cC* 19 04 39.4158230832 +01 18 22.158826524   9.92 7.92   7.039 F8/G0Ib 193 0
82 V* TT Aql cC* 19 08 13.7497129848 +01 17 55.147982640 8.96 7.86 6.50   5.699 G0/2Ib 281 0
83 V* V496 Aql cC* 19 08 20.7707435688 -07 26 15.879957540   8.88 7.79     F8/G0Iab/b 183 0
84 V* FM Aql cC* 19 09 15.9900952128 +10 33 08.961371208 9.76 9.05 7.89   6.725 F2I 188 0
85 V* FN Aql cC* 19 12 47.3148920688 +03 33 26.703677448   9.58 7.96     F8/G0Iab/b 185 0
86 V* U Vul cC* 19 36 37.7293294920 +20 19 58.576725768   8.368 7.162   5.556 F8Iab 230 0
87 V* S Vul cC* 19 48 23.8063718736 +27 17 11.428754460   11.392 9.551 8.775   K0 193 0
88 V* SV Vul cC* 19 51 30.9059845128 +27 27 36.837672012 8.65 9.00 6.74   5.703 F8Ia 433 0
89 V* V1162 Aql cC* 19 52 20.9909317368 -11 22 00.754130100   8.73 7.81     G2Ib 91 0
90 * eta Aql cC* 19 52 28.3689223781 +01 00 20.371980515 5.12 4.61 3.80   3.030 F6Iab+B9.8V 672 0
91 * 10 Sge cC* 19 56 01.2628947456 +16 38 05.262056412 6.45 6.03 5.36 6.81 4.789 F7Ib 349 0
92 V* X Cyg cC* 20 43 24.1917118680 +35 35 16.077149700 8.69 7.70 6.47   5.241 F7Ib 469 0
93 V* T Vul cC* 20 51 28.2383768376 +28 15 01.819622952 6.89 6.49 5.77   5.061 F5Ib+A0.8V 342 0
94 V* VZ Cyg cC* 21 51 41.4416202624 +43 08 02.542086024   10.02 8.60   7.948 G0 170 0
95 V* BG Lac cC* 22 00 25.1466021504 +43 26 43.331629776   9.33 8.59   7.793 G0.7 152 0
96 V* Y Lac cC* 22 09 02.9002579560 +51 02 45.084186096   9.79 9.13   8.292 F8 175 0
97 * del Cep cC* 22 29 10.2626640314 +58 24 54.697613650 4.71 4.35 3.75   3.219 F5Iab:+B7-8 730 0
98 V* Z Lac cC* 22 40 52.1457028632 +56 49 46.083774432   9.71 8.57   7.164 F6Ib 228 0
99 V* X Lac cC* 22 49 03.1807630560 +56 25 41.530963044   9.21 8.42     G5 171 0

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