2005A&A...429L..37R


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET20:44:16

2005A&A...429L..37R - Astronomy and Astrophysics, volume 429, L37-40 (2005/1-2)

The influence of chemical composition on the properties of Cepheid stars. I. Period-Luminosity relation vs. iron abundance.

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

Abstract (from CDS):

We have assessed the influence of the stellar iron content on the Cepheid Period-Luminosity (PL) relation by relating the V band residuals from the Freedman et al. (2001ApJ...553...47F) PL relation to [Fe/H] for 37 Galactic and Magellanic Clouds Cepheids. The iron abundances were measured from FEROS and UVES high-resolution and high-signal to noise optical spectra. Our data indicate that the stars become fainter as metallicity increases, until a plateau or turnover point is reached at about solar metallicity. Our data are incompatible with both no dependence of the PL relation on iron abundance, and with the linearly decreasing behavior often found in the literature (e.g. Kennicutt et al., 1998ApJ...498..181K; Sakai et al., 2004ApJ...608...42S). On the other hand, non-linear theoretical models of Fiorentino et al. (2002ApJ...576..402F) provide a fairly good description of the data.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: distances - Cepheids

Simbad objects: 44

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Number of rows : 44

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 SV* HV 817 cC* 00 39 16.5692812473 -72 01 58.302902914   14.44 13.847   13.088 ~ 36 0
2 SV* HV 1365 cC* 00 41 49.0804221683 -73 43 42.179739346   15.672 15.080   14.221 ~ 41 0
3 SV* HV 823 cC* 00 43 48.4444591659 -73 36 48.759833880   13.99 13.864   12.790 ~ 40 0
4 OGLE SMC-CEP-921 s*y 00 46 53.1110749320 -72 42 51.737002042   12.67 12.04   11.421 G0Iab 59 0
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9697 1
6 SV* HV 837 cC* 00 55 56.0569263828 -71 59 02.692782547   14.16 13.233   12.297 ~ 61 0
7 SV* HV 847 cC* 01 01 02.6889668865 -72 11 54.229938936   14.96 13.907   13.035 ~ 35 0
8 SV* HV 1954 cC* 01 04 00.3154946448 -72 13 59.864395541   13.94 14.003   13.254 ~ 34 0
9 SV* HV 2064 cC* 01 08 11.5815339725 -72 31 18.348679068   13.89 13.732   12.768 ~ 34 0
10 SV* HV 2195 cC* 01 14 28.0645476624 -72 39 53.532454980   14.02 13.115   12.144 F5Ib 45 0
11 V* BF Tuc cC* 01 17 52.9975933947 -73 37 25.153275568 14.94 14.51 13.72   12.89 F0 33 0
12 V* ST Hyi cC* 01 40 32.2014332345 -74 30 25.593040870   13.49 13.289   12.289 ~ 28 0
13 SV* HV 11211 cC* 02 20 49.4876820936 -73 05 08.320955074   14.88 13.836   13.125 ~ 26 0
14 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5856 1
15 SV* HV 12452 cC* 04 48 51.3419131055 -69 21 22.760708546   15.53 14.755 14.40 13.941 ~ 28 0
16 SV* HV 2260 cC* 05 00 55.8715776572 -68 26 20.816948180   15.67 14.906 14.35 13.933 ~ 39 0
17 SV* HV 2294 cC* 05 06 14.8082811541 -66 40 45.907556411   12.66 12.15 12.44 11.830 F7I 77 0
18 SV* HV 2352 cC* 05 09 04.3685065053 -70 21 54.126571648   14.86 14.197 13.74 13.38 ~ 37 0
19 SV* HV 2369 cC* 05 13 53.6708479354 -67 03 48.447940301 14.7 12.88 12.21   11.648 F5?I? 63 0
20 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15196 1
21 SV* HV 2580 cC* 05 29 25.6117087087 -66 14 23.294643845   14.82 14.01 13.53 13.14 ~ 41 0
22 SV* HV 997 cC* 05 33 00.9900025502 -68 11 27.620434332   15.46 14.591 14.20 13.635 ~ 36 0
23 * bet Dor cC* 05 33 37.5125319201 -62 29 23.323100433 5.13 4.58 3.76 3.55 3.12 F8/G0Ib 352 0
24 SV* HV 2733 cC* 05 37 17.3576284043 -66 45 11.920641743   15.28 14.68 14.30 13.96 ~ 30 0
25 SV* HV 1013 cC* 05 39 53.6438622975 -67 50 08.785719922   14.39 14.21 13.68 12.771 ~ 32 0
26 SV* HV 1023 cC* 05 46 36.1850662920 -68 11 03.440243508   14.66 14.06 13.52 12.775 ~ 41 0
27 SV* HV 12700 cC* 05 57 31.5188979522 -67 37 29.437277393   15.68 14.86 14.49 14.11 ~ 31 0
28 SV* HV 6093 cC* 05 57 46.8444050721 -68 41 04.284451547   15.96 15.304 15.02 14.628 ~ 28 0
29 V* T Mon cC* 06 25 12.9997562821 +07 05 08.561189768 8.24 7.20 5.98   4.996 G3Iabv+A0p 450 1
30 * zet Gem cC* 07 04 06.5307903 +20 34 13.073871 5.20 4.58 3.79   3.082 G1Ib 541 0
31 V* VZ Pup cC* 07 38 35.2380584126 -28 29 58.597876520   9.73 8.98     F7.5 133 0
32 V* AQ Pup cC* 07 58 22.0887170720 -29 07 48.335325928   9.70 8.54   7.175 F5-G2Ib 181 0
33 V* RS Pup cC* 08 13 04.2157137938 -34 34 42.691837063 8.89 8.00 6.70   5.453 F8Iab 324 0
34 V* RZ Vel cC* 08 37 01.3029337589 -44 06 52.844429407   8.507 7.260     G1Ib 203 0
35 * l Car cC* 09 45 14.8112246 -62 30 28.451894   4.33 3.40     G5Iab/b 295 1
36 V* VW Cen cC* 13 33 59.0299132697 -64 03 19.999430004   11.60 10.36   8.785 ~ 108 0
37 V* KN Cen cC* 13 36 36.8945451169 -64 33 29.916343439   11.22 9.86     G8Iab+B6.0V 128 0
38 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2600 2
39 V* V Cen cC* 14 32 33.0828020969 -56 53 15.774776152 8.44 7.84 6.93   5.798 F5Ib/II 247 0
40 V* U Nor cC* 15 42 20.9180199642 -55 18 42.941765163   10.68 9.22     F8Ib/II 128 0
41 V* S Nor cC* 16 18 51.8313333962 -57 53 59.253617873 8.15 7.49 6.49   5.427 F8/G0Ib 348 1
42 V* KQ Sco cC* 16 51 38.5473466715 -45 25 36.105341336 12.37 10.69 9.31     K7 121 0
43 V* WZ Sgr cC* 18 16 59.7158915244 -19 04 32.989119557   9.10 7.45     F7(III) 233 0
44 V* SZ Aql cC* 19 04 39.4159911509 +01 18 22.156017960   9.92 7.92   7.039 F8/G0Ib 176 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-20:44:16

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