2008A&A...490..613L


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST03:46:25

2008A&A...490..613L - Astronomy and Astrophysics, volume 490, 613-623 (2008/11-1)

Galactic abundance gradients from Cepheids. On the iron abundance gradient around 10-12 kpc.

LEMASLE B., FRANCOIS P., PIERSIMONI A., PEDICELLI S., BONO G., LANEY C.D., PRIMAS F. and ROMANIELLO M.

Abstract (from CDS):

Classical Cepheids are excellent tracers of intermediate-mass stars, since their distances can be estimated with very high accuracy. In particular, they can be adopted to trace the chemical evolution of the Galactic disk. Homogeneous iron abundance measurements for 33 Galactic Cepheids located in the outer disk together with accurate distance determinations based on near-infrared photometry are adopted to constrain the Galactic iron gradient beyond 10 kpc. Iron abundances were determined using high resolution Cepheid spectra collected with three different observational instruments: ESPaDOnSFHT, NarvalBL and FEROS.2m ESO/MPG telescope. Cepheid distances were estimated using near-infrared (J,H,K-band) period-luminosity relations and data from SAAO and the 2MASS catalog. The least squares solution over the entire data set indicates that the iron gradient in the Galactic disk presents a slope of -0.052±0.003dex/kpc in the 5-17kpc range. However, the change of the iron abundance across the disk seems to be better described by a linear regime inside the solar circle and a flattening of the gradient toward the outer disk (beyond 10 kpc). In the latter region the iron gradient presents a shallower slope, i.e. -0.012±0.014dex/kpc. In the outer disk (10-12kpc) we also found that Cepheids present an increase in the spread in iron abundance. Current evidence indicates that the spread in metallicity depends on the Galactocentric longitude. Finally, current data do not support the hypothesis of a discontinuity in the iron gradient at Galactocentric distances of 10-12kpc. The occurrence of a spread in iron abundance as a function of the Galactocentric longitude indicates that linear radial gradients should be cautiously treated to constrain the chemical evolution across the disk.

Abstract Copyright:

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

Simbad objects: 159

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Number of rows : 159

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* BD Cas cC* 00 09 51.3936043056 +61 30 50.546759498   12.38 11.22     ~ 54 0
2 V* FM Cas cC* 00 14 28.2413359663 +56 15 10.573326187   10.15 9.16   7.984 F7.5Ib 108 0
3 V* SY Cas cC* 00 15 09.8128640040 +58 25 27.439915823   10.69 9.92   8.789 F5 117 0
4 V* TU Cas cC* 00 26 19.4484760999 +51 16 49.290847490   8.507 7.835     F4 194 0
5 V* DL Cas cC* 00 29 58.5886100054 +60 12 43.069687745 10.66 9.88 8.63   7.582 G1Ib-IIHdel-1 307 0
6 V* XY Cas cC* 00 49 53.2639168236 +60 07 38.578594168   11.00 9.97     G0Ib 106 0
7 V* V636 Cas cC* 01 32 43.2247655304 +63 35 37.698927235   8.486 7.176     G0Ib 101 0
8 V* RW Cas cC* 01 37 14.0194446925 +57 45 33.192081133   9.44 8.58   7.896 G2 147 0
9 V* VX Per cC* 02 07 48.4806035107 +58 26 36.740590982   10.47 9.37   7.927 G2IV 175 0
10 V* UX Per cC* 02 13 07.4859156425 +58 04 47.824653665   12.14 11.26     F5 79 0
11 V* V440 Per cC* 02 23 51.7443033534 +55 21 53.502365644 7.76 7.120 6.291     F8Ib-II 173 0
12 V* SZ Cas cC* 02 27 13.7670524473 +59 27 38.174718163   11.5 9.60     G5III 161 0
13 V* DF Cas cC* 02 44 43.3152895263 +61 27 52.921298633   11.80 10.74     F8 72 0
14 V* SU Cas cC* 02 51 58.7508894403 +68 53 18.601570075 6.92 6.44 5.80     F5.5III+ 412 1
15 V* AD Cam cC* 03 29 25.9693397357 +60 26 47.271990543   14.16       ~ 46 0
16 V* AB Cam cC* 03 46 08.2526800242 +58 47 03.203658189   13.08       F3Ibp 46 0
17 V* RW Cam cC* 03 54 21.7725406302 +58 39 11.966964971   10.02 8.72   7.054 F8 163 0
18 V* RX Cam cC* 04 04 58.4642958819 +58 39 35.218272520   8.85 7.70   6.233 G2Ib+A0V 186 0
19 V* TV Cam cC* 04 07 32.7987744038 +60 19 06.461879431   12.83 11.43     F6Ibp 45 0
20 V* AS Per cC* 04 19 46.8581718451 +48 57 11.778174281   10.94 9.71   8.103 F8 83 0
21 V* BM Per cC* 04 29 39.3888285450 +48 25 19.102535927   11.56 10.06     K5 66 0
22 V* SZ Tau cC* 04 37 14.7778803229 +18 32 34.929341041 7.65 7.13 6.37     F6.7:Ib 292 0
23 V* HQ Per cC* 04 43 57.8806998785 +40 50 05.207699721           F 35 0
24 V* AW Per cC* 04 47 46.3148651549 +36 43 22.033445140   8.46 7.51   6.200 F0+B6: 210 0
25 V* SV Per cC* 04 49 47.9361288171 +42 17 22.964422403   9.74 8.86     F6-G1 139 0
26 V* CY Aur cC* 04 57 40.0807277112 +46 05 33.112390660   13.44 12.04     ~ 48 0
27 V* AN Aur cC* 04 59 41.5377308459 +40 50 09.727398522   11.35 10.21     F6 95 0
28 V* RX Aur cC* 05 01 23.1881737714 +39 57 37.422344258   8.49 7.62   6.594 G0III 198 0
29 V* BK Aur cC* 05 10 40.2294213078 +49 41 15.400106615   10.40 9.42     F8 77 0
30 V* SY Aur cC* 05 12 39.2271412155 +42 49 54.415802821   9.97 9.05   7.851 F5III 117 0
31 V* ER Aur cC* 05 13 09.9827679367 +41 59 25.889070826   12.65 11.63 11.040   ~ 41 0
32 V* YZ Aur cC* 05 15 21.9827122069 +40 04 40.883139360   11.77 10.24     G5 97 0
33 V* Y Aur cC* 05 28 39.2385752080 +42 26 15.843671650   10.53 9.74     F5 86 0
34 * bet Dor cC* 05 33 37.5125319201 -62 29 23.323100433 5.13 4.58 3.76 3.55 3.12 F8/G0Ib 354 0
35 V* AE Tau Ce* 05 34 36.6541381556 +26 12 08.666018880     11.62     ~ 40 0
36 V* ST Tau cC* 05 45 03.1601683809 +13 34 34.903166002   9.13 7.79   7.149 G0 120 0
37 V* AV Tau cC* 05 45 44.9162366630 +27 04 04.459560907   13.70       ~ 36 0
38 V* AX Aur cC* 05 46 50.8150368229 +31 35 52.507874209   13.54       ~ 35 0
39 V* AO Aur cC* 05 47 45.0529654365 +32 00 52.719751503   11.33 10.44     F5 44 0
40 V* RZ Gem cC* 06 02 36.5872523443 +22 14 02.947734335   10.83 9.91 9.68 8.679 F5 112 0
41 V* AA Gem cC* 06 06 34.9459286635 +26 19 45.205210801   11.0 9.91   8.540 K0 114 0
42 V* CS Ori cC* 06 07 25.4652004933 +11 09 07.113683832   11.96 11.29   10.239 F5 71 0
43 V* GQ Ori cC* 06 11 13.5830093624 +09 36 44.986218991   9.81 8.88   7.869 B 75 1
44 V* SV Mon cC* 06 21 26.3051049461 +06 28 12.577938993   9.32 8.28     G1Ib 163 0
45 V* RS Ori cC* 06 22 13.1927222060 +14 40 41.253685672   9.34 8.42   7.270 F4Ib 133 0
46 V* T Mon cC* 06 25 12.9997562821 +07 05 08.561189768 8.24 7.20 5.98   4.996 G3Iabv+A0p 451 1
47 * 48 Aur cC* 06 28 34.0875086 +30 29 34.914168 6.73 6.23 5.55   4.777 F5.5-G0Ib 367 0
48 V* CU Mon cC* 06 32 46.7955605374 +00 02 35.316926303   15.02     11.923 ~ 44 0
49 V* WW Mon cC* 06 33 37.1817036531 +09 12 12.840769070   13.65 12.492   11.155 F6 57 0
50 V* W Gem cC* 06 34 57.4524314200 +15 19 49.698631280 7.79 7.25 6.54   5.908 F5-G1 205 0
51 V* V495 Mon cC* 06 37 03.3837974248 -02 49 26.756611872   13.69       ~ 38 0
52 V* CV Mon cC* 06 37 04.8448658715 +03 03 50.276498200   11.32 9.90   8.631 ~ 218 0
53 V* BE Mon cC* 06 40 05.5823302469 +07 36 20.987932485   11.6 10.5     G5 77 0
54 V* AD Gem cC* 06 43 07.5116892124 +20 56 20.801766765   10.42 9.80   9.044 F5 99 0
55 V* V504 Mon cC* 06 44 43.9472470372 -03 57 08.639906289   12.77 11.77 11.48   ~ 33 0
56 V* V508 Mon cC* 06 47 09.3999270974 +03 58 01.550964840   11.50 10.53     ~ 66 0
57 V* V510 Mon cC* 06 47 26.9330231896 +02 31 01.444805612   14.13 12.645   10.858 ~ 34 0
58 V* TW Mon cC* 06 50 32.3362879535 +00 00 25.185938999     12.552   10.939 ~ 42 0
59 V* EE Mon cC* 06 50 48.6826876756 -07 58 50.632391554   14.03 13.06   11.724 ~ 42 0
60 V* TX Mon cC* 06 50 52.2687185541 -01 25 45.221461613   11.76 10.67   9.619 F6 89 0
61 V* XX Mon cC* 06 52 12.1699029474 -02 48 25.053620849   12.81 11.52     F6 66 0
62 V* EK Mon cC* 06 52 46.1708000904 -02 27 29.629893719   11.87 11.29     ~ 62 0
63 V* TY Mon cC* 06 56 39.7965268829 +00 11 24.143096639   12.90     10.347 K5 39 0
64 V* BV Mon cC* 06 56 51.0856174304 +04 30 58.275526470   12.44 11.38     ~ 36 0
65 V* AA Mon cC* 06 57 23.7697363711 -03 50 36.026136186   14.07 12.740   11.081 ~ 45 0
66 V* TZ Mon cC* 06 58 00.9347614861 -00 22 33.463317717   11.8       F6 83 0
67 V* UY Mon cC* 06 58 50.3176103311 +09 37 21.838154223   9.89 9.37     F8II 70 0
68 V* V526 Mon cC* 07 01 53.6186125378 -01 07 51.452237915   9.20 8.67     F3III 72 0
69 * zet Gem cC* 07 04 06.5307903 +20 34 13.073871 5.20 4.58 3.79   3.082 G1Ib 542 0
70 V* FG Mon cC* 07 07 08.5490285558 -07 47 42.473450631   14.44 13.182   11.720 ~ 39 0
71 V* FI Mon cC* 07 10 37.9924208299 -07 07 22.461492125   14.07 12.900   11.578 ~ 43 0
72 V* AO CMa cC* 07 24 40.5915853513 -26 11 18.607881826           ~ 27 0
73 V* X Pup cC* 07 32 47.0329487912 -20 54 34.881653031   9.56 8.46   7.143 K0 167 0
74 V* HW Pup cC* 07 57 42.1676771396 -27 36 06.840883085   13.35 12.018   10.51 ~ 48 0
75 V* LS Pup cC* 07 58 59.2197671330 -29 18 28.357057956   11.75 10.59 9.88 8.933 ~ 79 0
76 V* DD Vel WV* 09 12 09.6340277622 -50 22 33.612960439     12.36     ~ 34 0
77 V* EZ Vel cC* 09 25 07.3812190007 -53 12 35.558567086     12.61     ~ 40 0
78 V* WZ Car cC* 10 55 18.7272542108 -60 56 23.951208594   10.40 9.37     F8 135 0
79 V* U Car cC* 10 57 48.1866898409 -59 43 55.880151632 8.31 7.21 6.11   5.073 G5/8Iab 217 0
80 V* UU Mus cC* 11 52 17.7225421742 -65 24 15.060675590   10.5 9.54     F7/G0p 121 0
81 V* S Mus cC* 12 12 47.0194644681 -70 09 06.436474127 7.58 8.80 8.33 7.39 5.196 F6Ib+B5V 242 0
82 * 35 Cru cC* 12 31 40.3301092383 -59 25 26.122369782 6.60 6.19 5.53     F7Ib/II 131 0
83 V* VW Cen cC* 13 33 59.0299132697 -64 03 19.999430004   11.60 10.36   8.785 ~ 109 0
84 V* KN Cen cC* 13 36 36.8945451169 -64 33 29.916343439   11.22 9.86     G8Iab+B6.0V 129 0
85 V* XX Cen cC* 13 40 18.6446943543 -57 36 47.444003198   8.72 7.30   6.747 F7/8II 175 0
86 V* V Cen cC* 14 32 33.0828020969 -56 53 15.774776152 8.44 7.84 6.93   5.798 F5Ib/II 248 0
87 V* GH Lup Ce* 15 24 38.3402443807 -52 51 13.896895820 10.03 9.05 7.83     G2Iab 89 0
88 V* U Nor cC* 15 42 20.9180199642 -55 18 42.941765163   10.68 9.22     F8Ib/II 130 0
89 V* V340 Nor cC* 16 13 17.3998357878 -54 14 05.588347830   9.61 8.47 8.83   G2Iab 139 0
90 V* S Nor cC* 16 18 51.8313333962 -57 53 59.253617873 8.15 7.49 6.49   5.427 F8/G0Ib 349 1
91 V* V340 Ara cC* 16 45 19.1122888146 -51 20 33.394152547   11.39 10.03     ~ 70 0
92 V* KQ Sco cC* 16 51 38.5473466715 -45 25 36.105341336 12.37 10.69 9.31     K7 122 0
93 V* RV Sco cC* 16 58 19.74983 -33 36 32.7842 7.79 7.37 6.61   5.909 G0Ib 179 1
94 V* BF Oph cC* 17 06 05.4979763004 -26 34 50.031704299 8.00 7.61 6.93   6.377 G0II 207 0
95 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12262 0
96 V* V500 Sco cC* 17 48 37.5007852193 -30 28 33.460678490   10.07 8.81   7.191 K0 116 0
97 V* RY Sco cC* 17 50 52.3454231474 -33 42 20.410667234 9.77 8.79 7.51   6.256 F6Ib 173 0
98 V* Y Oph cC* 17 52 38.7021149511 -06 08 36.875163136 8.62 7.61 6.21     G3Ia 348 0
99 V* AV Sgr cC* 18 04 48.7864032131 -22 43 56.645836757   13.39 11.49   10.595 ~ 59 0
100 * gam01 Sgr cC* 18 05 01.2265190154 -29 34 48.303215344 5.99 5.47 4.69   3.869 G0Ib/II 332 0
101 V* VY Sgr cC* 18 12 04.5660706883 -20 42 14.465377948   12.70 11.36     F6 65 0
102 * 12 Sgr cC* 18 13 02.4957702081 -23 07 02.200799106 8.06 7.48 6.59   6.057 F7/8Ib/II 178 0
103 V* WZ Sgr cC* 18 16 59.7158915244 -19 04 32.989119557   9.10 7.45     F7(III) 234 0
104 V* Y Sgr cC* 18 21 22.9864295 -18 51 36.001763 7.31 6.69 5.75   4.810 F8II 275 0
105 V* XX Sgr cC* 18 24 44.5007279272 -16 47 49.819587940   10.51 9.65 9.38   F7/8II 110 0
106 V* UZ Sct cC* 18 31 22.3666774568 -12 55 43.338736715   13.23 10.91   9.195 G0 78 0
107 V* U Sgr cC* 18 31 53.3321808602 -19 07 30.262730218 8.50 7.81 6.68   5.413 G1Ib 440 0
108 V* V367 Sct cC* 18 33 35.2353194475 -10 25 38.130057884   13.34 11.580     ~ 156 0
109 V* BQ Ser Ce* 18 36 15.9376665154 +04 23 53.692279873   10.49 9.21     F5III 100 0
110 V* EW Sct cC* 18 37 51.1111080562 -06 47 48.495390706   9.50 7.96     F8Ib/II 101 0
111 V* SS Sct cC* 18 43 43.5114066939 -07 43 51.958881260   9.29 7.90   7.100 F8II 164 0
112 V* V350 Sgr cC* 18 45 17.4962010593 -20 38 50.571706956   8.321 7.450 8.41 6.421 F8Ib/II 201 0
113 V* BB Sgr cC* 18 50 59.8730479535 -20 17 42.828317888 8.07 7.53 6.69   5.824 G0Ib 238 0
114 V* TT Aql cC* 19 08 13.7497120770 +01 17 55.146226298 8.96 7.86 6.50   5.699 G0/2Ib 266 0
115 V* V496 Aql cC* 19 08 20.7712150568 -07 26 15.882592498   8.88 7.79     F8/G0Iab/b 165 0
116 V* FM Aql cC* 19 09 15.9901683300 +10 33 08.958768391 9.76 9.05 7.89   6.725 F2I 175 0
117 V* FN Aql cC* 19 12 47.3150076412 +03 33 26.704507437   9.58 7.96     F8/G0Iab/b 171 0
118 V* V473 Lyr cC* 19 15 59.4894683081 +27 55 34.683764506 7.18 6.770 6.153     F8Ib-II 208 0
119 V* U Vul cC* 19 36 37.7280897633 +20 19 58.569232928   8.368 7.162   5.556 F8Iab 216 0
120 V* V924 Cyg cC* 19 38 11.5847182091 +32 29 22.446712810   11.48 10.75     F8I 73 0
121 V* SU Cyg cC* 19 44 48.7364497912 +29 15 52.894148064 7.10 6.88 6.44 6.06 5.84 F2Iab:+B8.0V 286 0
122 V* S Vul RV* 19 48 23.8064092484 +27 17 11.426469538   10.99 8.69     K0 178 0
123 V* SV Vul cC* 19 51 30.9059608126 +27 27 36.835645654 8.65 7.86 6.74   5.703 F8Ia 405 0
124 V* V1162 Aql cC* 19 52 20.9909064920 -11 22 00.757174772   8.73 7.81     G2Ib 78 0
125 * eta Aql cC* 19 52 28.3677478 +01 00 20.369619 5.12 4.61 3.80   3.030 F6Iab+B9.8V 643 0
126 * 10 Sge cC* 19 56 01.2614273274 +16 38 05.236276391 6.45 6.03 5.36 6.81 4.789 F7Ib 333 0
127 V* X Vul cC* 19 57 28.6055727685 +26 33 23.281913956   10.16 8.87   7.147 F8Ia 157 0
128 V* CD Cyg cC* 20 04 26.5612846895 +34 06 44.187255455   9.35 8.35     F8-G5Iab-Ib 192 0
129 V* V402 Cyg cC* 20 09 07.7598168773 +37 09 07.085085598   10.9 9.87   8.674 G0III 88 0
130 V* MW Cyg cC* 20 12 22.8297860287 +32 52 17.840728795   10.71 9.45   7.882 F8.5-G2Ib 108 0
131 V* SZ Cyg cC* 20 32 54.2939988595 +46 36 04.582313595   10.80 9.37   7.770 F7.5/8-G6.5Ib 144 0
132 V* X Cyg cC* 20 43 24.1918662954 +35 35 16.075732392 8.69 7.70 6.47   5.241 F7Ib 445 0
133 V* BZ Cyg cC* 20 45 59.7977146402 +45 18 25.046168919   11.8 10.2   8.331 F7Ib-G4Ib: 94 0
134 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
135 V* VX Cyg cC* 20 57 20.8298754013 +40 10 39.008480366   11.6 10.08   8.187 F5e-G2I-II 123 1
136 V* TX Cyg cC* 21 00 06.3808243296 +42 35 51.214648706   11.3 9.50   7.168 F5.5Ib-G5Ib: 142 0
137 V* VY Cyg cC* 21 04 16.6365398971 +39 58 20.104204896 11.74 10.66 9.56   8.090 F5.5-G0.5Ib 128 0
138 V* DT Cyg cC* 21 06 30.2442673195 +31 11 04.765587914 6.70 6.38 5.82     F7II- 297 0
139 V* V386 Cyg cC* 21 14 40.4339518156 +41 42 58.844202279   11.12 9.75   7.750 F5.5-G0Ib 116 1
140 V* V1334 Cyg cC* 21 19 22.1772463169 +38 14 14.867388528   6.364 5.882     F1II+B7.0V 182 0
141 V* V532 Cyg cC* 21 20 32.9004138272 +45 28 03.017255074   10.08 9.11     F5 107 0
142 V* V1726 Cyg cC* 21 29 38.9420420958 +48 58 08.704046445   9.76 8.91     F5 67 1
143 V* VZ Cyg cC* 21 51 41.4415144699 +43 08 02.538005456   10.02 8.60   7.948 G0 158 0
144 V* IR Cep cC* 21 57 51.9255446770 +61 01 07.903989255   8.68 7.86     G0 88 1
145 V* CP Cep cC* 21 57 52.6912818654 +56 09 50.038775828   12.29 10.58   8.788 F5Ib 98 0
146 V* BG Lac cC* 22 00 25.1468672171 +43 26 43.329596739   9.33 8.59   7.793 G0.7 141 0
147 V* Y Lac cC* 22 09 02.8999210254 +51 02 45.083169239   9.79 9.13   8.292 F8 162 0
148 * del Cep cC* 22 29 10.2650184 +58 24 54.713856 4.71 4.35 3.75   3.219 F5Iab:+B7-8 691 0
149 V* Z Lac cC* 22 40 52.1456104219 +56 49 46.083960286   9.71 8.57   7.164 F6Ib 215 0
150 V* RR Lac cC* 22 41 26.5258632443 +56 25 58.029719396   9.68 8.87   7.786 K0 163 0
151 V* CR Cep cC* 22 46 24.7705225443 +59 26 31.922218882   10.94 9.64   7.931 G0 87 0
152 V* V Lac cC* 22 48 37.9957086435 +56 19 17.540249050   9.72 8.89   7.883 G5 153 0
153 V* X Lac cC* 22 49 03.1806947647 +56 25 41.530855473   9.21 8.42     G5 159 0
154 V* SW Cas cC* 23 07 10.0825486116 +58 33 15.128942270   10.73 9.74   8.397 K0 110 0
155 V* CH Cas cC* 23 22 28.4387974362 +62 45 25.740906878   12.57 10.79     F3Ibp 66 0
156 V* CY Cas cC* 23 29 12.7619630267 +63 22 27.487447379   13.48 11.67   9.627 G1-2Ib 65 0
157 V* RY Cas cC* 23 52 07.0320627883 +58 44 30.207229715   11.32 9.95   8.411 F9Ib 110 0
158 V* DD Cas cC* 23 57 34.9599200756 +62 43 05.683891313   10.95 9.84   8.516 F7 116 0
159 V* CF Cas cC* 23 58 17.9757306390 +61 13 15.821709555   12.72 10.80   9.700 F8Ibv 223 0

    Equat.    Gal    SGal    Ecl

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2021.06.20-03:46:25

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