2004A&A...423...97B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST09:25:06

2004A&A...423...97B - Astronomy and Astrophysics, volume 423, 97-109 (2004/8-3)

Properties of RR Lyrae stars in the inner regions of the Large Magellanic Cloud.

BORISSOVA J., MINNITI D., REJKUBA M., ALVES D., COOK K.H. and FREEMAN K.C.

Abstract (from CDS):

We present the radial velocities, metallicities and the K-band magnitudes of 74 RR Lyrae stars in the inner regions of the LMC. The intermediate resolution spectra and infrared images were obtained with FORS1 at the ESO VLT and with the SOFI infrared imager at the ESO NTT. The best 43 RR Lyrae with measured velocities yield an observed velocity dispersion of σ=61±7km/s. We obtain a true LMC RR Lyrae velocity dispersion of σ=53km/s, which is higher than the velocity dispersion of any other LMC population previously measured. This is the first empirical evidence for a kinematically hot, metal-poor halo in the LMC as discussed in Minniti et al. (2003Sci...301.1508M). Using Layden's (1994) modification of the ΔS method we measured the metallicity for 23 of our stars. The mean value is [Fe/H]=-1.46±0.09dex. The absolute magnitudes MV and MK of RR Lyrae stars are linear functions of metallicity. In the V band, our data agree with the Olech et al. (2003MNRAS.345...86O) relation, in the K band the slope is flatter. The average apparent V luminosity of 70 RR Lyrae stars is <V≥ 19.45±0.04 and the average K luminosity of 37 RR Lyrae stars is <K≥18.20±0.06. There is no obvious relation between apparent V magnitude and Log P, while the RR Lyrae K band magnitudes show a well defined linear trend with Log P. Using the Bono et al. (2001MNRAS.326.1183B) and Bono et al. (2003MNRAS.344.1097B) theoretical Near-Infrared Period-Luminosity-Metallicity relations we calculate the LMC distance modulus µ0=18.48±0.08.

Abstract Copyright:

Journal keyword(s): galaxies: Magellanic clouds - stars: variables: RR Lyrae - galaxies: formation

VizieR on-line data: <Available at CDS (J/A+A/423/97): table3.dat table4.dat table6.dat>

CDS comments: Many misprints in table 4.

Simbad objects: 98

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Number of rows : 98

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 OGLE LMC-RRLYR-3976 RR* 05 03 49.1574627960 -69 33 09.048981734     18.99   18.645 ~ 6 0
2 OGLE LMC-RRLYR-3986 RR* 05 03 51.3738789753 -69 33 31.397068574     19.49   19.052 ~ 5 0
3 2MASS J05041035-6931482 LP* 05 04 10.36 -69 31 48.3     16.803   14.975 ~ 2 0
4 OGLE LMC-RRLYR-4086 RR* 05 04 11.1887567346 -69 33 35.793797103     19.37   18.785 ~ 6 0
5 OGLE J050412.63-693110.4 V* 05 04 12.53 -69 31 10.3           ~ 1 0
6 OGLE LMC-RRLYR-4150 RR* 05 04 22.8186166725 -69 33 32.578633552     19.24   18.986 ~ 5 0
7 OGLE LMC-RRLYR-4217 RR* 05 04 35.10 -69 36 38.1     19.09   18.803 ~ 5 0
8 OGLE LMC-RRLYR-8331 RR* 05 14 07.1115209469 -68 44 49.113552929     19.89   18.703 ~ 4 0
9 OGLE LMC-SC9 281841 RR* 05 14 07.2270849706 -68 48 20.302110097   19.71 19.30   18.65 ~ 6 0
10 OGLE LMC-RRLYR-8360 RR* 05 14 11.3503428534 -68 44 48.926756504     19.73   18.896 ~ 5 0
11 OGLE LMC-SC9 281631 RR* 05 14 15.1244020747 -68 49 19.827870312   19.92 19.47   18.79 ~ 6 0
12 OGLE LMC-RRLYR-8440 RR* 05 14 20.5391799079 -68 44 48.625664108     19.52   18.844 ~ 5 0
13 OGLE LMC-SC9 392818 RR* 05 14 28.4326223621 -68 47 47.249246322   19.49 19.30   18.75 ~ 7 0
14 OGLE LMC-RRLYR-8543 RR* 05 14 31.16 -68 44 45.2     19.78   18.891 ~ 5 0
15 OGLE J051434.21-685033.0 Lev 05 14 34.2 -68 50 33           ~ 1 0
16 OGLE J051434.43-684951.1 V* 05 14 34.3865122312 -68 49 50.324463437           ~ 1 0
17 OGLE J051436.30-684937.8 Lev 05 14 36.3 -68 49 38           ~ 1 0
18 OGLE J051438.15-684921.7 V* 05 14 38.0625784125 -68 49 21.511140268           ~ 1 0
19 2MASS J05143810-6849129 LP* 05 14 38.10 -68 49 13.0     17.255 15.023 14.923 ~ 4 0
20 OGLE LMC-SC9 393335 RR* 05 14 41.20 -68 48 59.5   20.07 19.69   18.95 ~ 6 0
21 OGLE LMC-RRLYR-8685 RR* 05 14 47.2395301415 -68 45 45.225061536     19.51   19.016 ~ 4 0
22 OGLE J051450.91-685028.9 V* 05 14 50.91 -68 50 28.9           ~ 1 0
23 OGLE J051453.62-684653.3 V* 05 14 53.538 -68 46 53.19     16.67 15.78   ~ 2 0
24 OGLE LMC-SC9 393085 RR* 05 14 55.6984554852 -68 46 21.624811717   19.50 19.26   18.76 ~ 6 0
25 OGLE LMC-SC9 392599 RR* 05 14 58.82 -68 48 57.8   19.89 19.39   18.69 ~ 7 0
26 OGLE LMC-SC9 392743 RR* 05 15 02.6073592745 -68 48 13.135576056   19.98 19.64   19.04 ~ 7 0
27 OGLE LMC-RRLYR-9709 RR* 05 16 37.2500022228 -70 48 00.555053192     19.32   18.780 ~ 5 0
28 OGLE LMC-RRLYR-9744 RR* 05 16 40.4130119236 -70 48 38.159048247     19.41   18.741 ~ 4 0
29 OGLE LMC-RRLYR-9795 RR* 05 16 43.9432200314 -70 49 44.466281589     19.66   18.952 ~ 5 0
30 OGLE LMC-RRLYR-10058 RR* 05 17 12.7262608379 -70 50 21.544575860     19.23   18.828 ~ 4 0
31 OGLE LMC-RRLYR-10158 RR* 05 17 22.6861798573 -70 43 51.793637917     19.21   18.687 ~ 4 0
32 OGLE LMC-RRLYR-10443 RR* 05 17 53.49 -70 46 21.5     19.41   18.765 ~ 5 0
33 OGLE LMC-SC7 442285 RR* 05 19 43.09 -69 17 05.6   19.83 19.60   19.19 ~ 6 0
34 OGLE LMC-SC7 447521 cC* 05 19 47.0233526286 -69 12 29.218299202   16.393 15.654   14.898 ~ 12 0
35 OGLE LMC-SC7 441500 RR* 05 19 53.22 -69 15 52.3   19.48 19.28   18.78 ~ 5 0
36 OGLE LMC-SC7 440093 cC* 05 19 53.7504945601 -69 15 26.490410251   16.201 15.546   14.796 ~ 9 0
37 OGLE LMC-SC7 442354 RR* 05 19 55.16 -69 16 58.2   19.93 19.60   19.16 ~ 5 0
38 OGLE LMC-SC6 103930 RR* 05 19 58.65 -69 18 28.5     19.35   18.77 ~ 6 0
39 SV* HV 2458 cC* 05 20 04.5201642918 -69 16 50.853246969   16.360 15.792   15.159 ~ 13 0
40 2MASS J05201049-6913376 LP* 05 20 10.5088557588 -69 13 37.671034530       15.064   ~ 2 0
41 2MASS J05201852-6916557 LP* 05 20 18.5294306839 -69 16 55.738686801     16.36 14.961   ~ 3 0
42 OGLE J052021.61-691235.8 V* 05 20 21.61 -69 12 35.8           ~ 1 0
43 OGLE LMC-SC6 119123 RR* 05 20 22.2992365163 -69 12 02.286322475   19.69 19.33   18.64 ~ 5 0
44 2MASS J05202632-6913121 LP* 05 20 26.3342868331 -69 13 12.165324891     16.96 14.399 14.313 ~ 4 0
45 OGLE LMC-SC6 104623 RR* 05 20 27.00 -69 16 07.0   19.66 19.18   18.64 ~ 7 0
46 OGLE J052027.89-671509.6 Lev 05 20 27.89 -67 15 09.6           ~ 1 0
47 OGLE J052029.23-691558.9 V* 05 20 29.1093214636 -69 15 58.845637823     16.37 15.57   ~ 2 0
48 OGLE J052029.58-691444.1 V* 05 20 29.58 -69 14 44.1           ~ 1 0
49 OGLE LMC-SC6 112251 RR* 05 20 33.2433564939 -69 13 34.221978491   19.69 19.23   18.74 ~ 7 0
50 OGLE LMC-SC6 225479 RR* 05 20 43.2875057693 -69 17 42.705694778   19.62 19.34   18.93 ~ 6 0
51 OGLE LMC-SC6 224156 RR* 05 20 44.4720626095 -69 17 26.121305859   19.66 19.32   18.87 ~ 6 0
52 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
53 OGLE LMC-RRLYR-19031 RR* 05 33 42.1163631818 -70 49 40.879074376     18.95   18.816 ~ 5 0
54 OGLE LMC-RRLYR-19104 RR* 05 33 52.9238259474 -70 48 56.830472583     19.20   18.744 ~ 6 0
55 OGLE LMC-CEP-2406 cC* 05 33 57.7737205291 -70 52 18.672649276     15.901   15.379 ~ 5 0
56 OGLE LMC-RRLYR-19159 RR* 05 33 59.5550403774 -70 48 11.902934782     19.313   18.943 ~ 5 0
57 OGLE LMC-RRLYR-19227 RR* 05 34 10.38 -70 48 12.0     18.92   18.608 ~ 5 0
58 OGLE LMC-SC1 194121 RR* 05 34 11.2394202803 -70 24 13.490320870   20.80 19.4   18.90 ~ 5 0
59 OGLE LMC-RRLYR-19266 RR* 05 34 16.8615027919 -70 47 45.418690398     19.47   18.903 ~ 5 0
60 OGLE LMC-SC1 198285 RR* 05 34 18.7698872178 -70 23 09.690635799   20.01 19.59   19.00 ~ 7 0
61 OGLE LMC-SC1 197435 RR* 05 34 27.2967779918 -70 22 49.942917079   19.86 19.48   18.96 ~ 6 0
62 OGLE LMC-SC1 192823 RR* 05 34 30.50 -70 25 42.4   19.77 19.39   18.87 ~ 7 0
63 OGLE LMC-SC1 277529 RR* 05 34 35.34 -70 23 56.5   19.72 19.38   18.85 ~ 6 0
64 OGLE LMC-SC1 272846 RR* 05 34 37.3438315320 -70 28 06.831984150   19.58 19.25   18.84 ~ 6 0
65 OGLE J053440.46-702731.1 Lev 05 34 40.46 -70 27 31.1           ~ 1 0
66 SV* HV 2684 cC* 05 34 58.6382576198 -70 26 30.708224360   16.474 15.991   15.396 ~ 13 0
67 OGLE LMC-SC1 280814 RR* 05 34 59.34 -70 22 33.0   19.66 19.35   18.79 ~ 6 0
68 OGLE LMC-SC1 277052 RR* 05 35 00.6194410986 -70 25 33.092250155   19.79 19.48   18.90 ~ 7 0
69 OGLE LMC-SC1 276327 RR* 05 35 04.3900328180 -70 24 44.994730192   19.83 19.35   18.76 ~ 7 0
70 OGLE LMC-SC1 281017 RR* 05 35 09.0929963388 -70 21 45.788634984     19.28   18.80 ~ 5 0
71 OGLE LMC-SC16 9099 RR* 05 35 17.8982267061 -70 27 55.167607438   19.74 19.35   18.85 ~ 6 0
72 OGLE LMC-SC16 16607 RR* 05 35 20.2350217531 -70 23 42.793932165   19.62 19.26   18.73 ~ 6 0
73 OGLE LMC-SC16 17564 RR* 05 35 24.3911377754 -70 23 26.143563067   19.81 19.36   18.79 ~ 5 0
74 Cl* NGC 5139 BPB 215311 RR* 13 26 37.721 -47 27 35.43 14.953 14.770 14.767 14.090 13.853 ~ 22 0
75 Cl* NGC 5139 B V119 RR* 13 26 38.2710295040 -47 31 18.419511323 15.133 14.893 14.697 14.352 14.147 ~ 23 0
76 Cl* NGC 5139 WSB V115 RR* 13 26 39.637 -47 30 28.50 15.171 15.087 14.844 14.496 14.197 ~ 16 0
77 Cl* NGC 5139 SAW V266 RR* 13 26 39.7968222836 -47 28 03.443546913 15.173 14.830 14.596 14.343 14.032 ~ 15 0
78 Cl* NGC 5139 SAW V267 RR* 13 26 40.1822712807 -47 26 36.107363178 14.964 14.881 14.615 14.472 14.076 ~ 14 0
79 Cl* NGC 5139 B V118 RR* 13 26 40.5329382608 -47 30 19.494201214 14.875 15.243 14.765 14.326 13.802 ~ 26 0
80 OGLEGC 112 RR* 13 26 43.0263786581 -47 28 18.108969530 15.011 14.970 14.603   13.773 ~ 21 0
81 Cl* NGC 5139 LEID 37166 RR* 13 26 45.981 -47 26 15.41 15.258 14.933 14.661 14.332 14.033 ~ 13 0
82 Cl* NGC 5139 BPB 221081 RR* 13 26 46.459 -47 27 17.67 15.153 15.094 14.553 14.513 14.001 ~ 13 0
83 Cl* NGC 5139 SAW V271 RR* 13 26 47.0957213429 -47 30 04.336279564 14.981 14.773 14.466 14.285 13.862 ~ 11 0
84 2MASS J13264906-4728385 RR* 13 26 49.07 -47 28 38.6 14.957 15.230 14.449 14.164 13.732 ~ 21 0
85 Cl* NGC 5139 BPB 238719 RR* 13 26 49.653 -47 26 23.84 14.998 14.940 14.705 14.224 14.024 ~ 21 0
86 Cl* NGC 5139 BPB 214740 RR* 13 26 49.723 -47 27 37.39 15.055 14.959 14.666 14.253 14.016 ~ 11 0
87 Cl* NGC 5139 SAW V145 RR* 13 26 51.2079073903 -47 31 08.937538870 15.259 15.114 14.667   14.042 ~ 18 0
88 Cl* NGC 5139 SAW V273 RR* 13 26 54.3367887963 -47 27 08.979159673 15.001 15.070 14.615 14.437 14.048 ~ 10 0
89 Cl* NGC 5139 B V88 RR* 13 26 55.8926699275 -47 25 16.693703480 15.003 14.745 14.720 14.310 13.734 ~ 24 0
90 Cl* NGC 5139 B V113 RR* 13 26 56.2911411024 -47 31 48.025677077 15.192 14.993 14.854 14.258 14.069 ~ 22 0
91 MACHO 79.5628.1300 Lev ~ ~     19.42     ~ 3 0
92 MACHO 79.5628.1065 RR* ~ ~     19.84     ~ 2 0
93 MACHO 11.8622.757 RR* ~ ~     19.11     ~ 3 0
94 MACHO 11.8623.3792 RR* ~ ~     19.31     ~ 2 0
95 MACHO 79.5507.1580 RR* ~ ~     19.46     ~ 3 0
96 MACHO 2.5508.3096 RR* ~ ~     19.96     ~ 2 0
97 MACHO 11.8743.1422 RR* ~ ~           ~ 1 0
98 MACHO 2.5507.5945 RR* ~ ~     19.54     ~ 2 0

    Equat.    Gal    SGal    Ecl

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2020.07.05-09:25:06

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