2017MNRAS.468..870T

Query : 2017MNRAS.468..870T

2017MNRAS.468..870T - Mon. Not. R. Astron. Soc., 468, 870-884 (2017/June-2)

RR Lyrae variables in M33: two new fields and an analysis of the galaxy's population.

TANAKUL N., YANG S.-C. and SARAJEDINI A.

Abstract (from CDS):

We present a re-analysis of M33 RR Lyrae variables in four different fields: two inner disc fields and two outer disc fields. These are located at 8.5, 8.7, 36 and 46 arcmin from the centre of M33, respectively. We identify 48 new RR Lyrae variable stars and refine the light-curve properties of 51 previously identified variables. From the light curves, we calculate reddenings and metallicities for each star. Using data in this paper and previously published material, we are able to construct a radial density profile for the RR Lyrae stars in M33. This profile, when plotted in log space, has a slope of ∼-2.0 ± 0.15 which agrees with the radial distribution of halo stars in the Milky Way and M31. This suggests that the majority of M33 RR Lyrae variables observed so far belong to the halo. We also examine the RR Lyrae specific frequency and absolute magnitude relation in M33 and find good agreement with previous studies.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: variables: RR Lyrae - galaxies: individual: (M33) - Local Group - Local Group

VizieR on-line data: <Available at CDS (J/MNRAS/468/870): table11.dat table3.dat table4.dat table5.dat>

Nomenclature: Table 11: [TYS2017] NNNNNN N=99 among (Nos 3781-119403).

Simbad objects: 105

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Number of rows : 105
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 [TYS2017] 76639 RR* 01 33 28.980 +30 48 04.62     25.727   25.291 ~ 1 0
3 [TYS2017] 56273 RR* 01 33 32.190 +30 48 33.53     25.338   24.979 ~ 1 0
4 [SBG2006] 61160 RR* 01 33 32.580 +30 49 35.22     25.794   24.860 ~ 2 0
5 [TYS2017] 68272 RR* 01 33 33.240 +30 48 32.71     25.779   24.920 ~ 1 0
6 [SBG2006] 100315 RR* 01 33 34.100 +30 47 15.06     26.033   25.055 ~ 2 0
7 [SBG2006] 103812 RR* 01 33 34.270 +30 47 45.61     26.056   25.079 ~ 2 0
8 [TYS2017] 62070 RR* 01 33 35.290 +30 47 50.72     25.050   24.815 ~ 1 0
9 [TYS2017] 87063 RR* 01 33 35.760 +30 46 57.64     25.247   25.006 ~ 1 0
10 [SBG2006] 114242 RR* 01 33 35.910 +30 48 05.16     25.994   25.241 ~ 2 0
11 [SBG2006] 76675 RR* 01 33 36.070 +30 49 36.18     26.010   25.221 ~ 2 0
12 [SBG2006] 66329 RR* 01 33 36.150 +30 49 19.57     25.712   25.087 ~ 2 0
13 [TYS2017] 97188 RR* 01 33 36.410 +30 47 48.79     25.477   25.131 ~ 1 0
14 [TYS2017] 87468 RR* 01 33 37.010 +30 46 47.39     25.409   24.976 ~ 1 0
15 [SBG2006] 65431 RR* 01 33 38.140 +30 50 19.25     26.075   25.080 ~ 2 0
16 [SBG2006] 104521 RR* 01 33 38.150 +30 46 32.89     26.109   25.133 ~ 2 0
17 [TYS2017] 101932 RR* 01 33 38.160 +30 47 29.48     25.557   25.175 ~ 1 0
18 [TYS2017] 76667 RR* 01 33 38.580 +30 47 54.84     25.218   24.873 ~ 1 0
19 [SBG2006] 102459 RR* 01 33 39.080 +30 48 47.16     25.725   25.122 ~ 2 0
20 [TYS2017] 117357 RR* 01 33 39.600 +30 47 10.53     25.643   25.347 ~ 1 0
21 [SBG2006] 119179 RR* 01 33 40.110 +30 48 22.53     26.191   25.324 ~ 2 0
22 [TYS2017] 87561 RR* 01 33 40.250 +30 47 30.83     25.366   25.077 ~ 1 0
23 [TYS2017] 60192 RR* 01 33 40.490 +30 50 04.67     25.427   24.835 ~ 1 0
24 [SBG2006] 109540 RR* 01 33 40.620 +30 48 30.97     25.789   25.292 ~ 2 0
25 [TYS2017] 88509 RR* 01 33 40.690 +30 48 12.41     25.402   25.054 ~ 1 0
26 [TYS2017] 89473 RR* 01 33 41.140 +30 48 20.92     25.718   24.824 ~ 1 0
27 [TYS2017] 107034 RR* 01 33 41.390 +30 48 32.75     25.516   25.181 ~ 1 0
28 [TYS2017] 99816 RR* 01 33 41.620 +30 47 11.44     25.515   25.334 ~ 1 0
29 [SBG2006] 95931 RR* 01 33 42.280 +30 48 48.97     25.313   25.093 ~ 2 0
30 [TYS2017] 56888 RR* 01 33 42.610 +30 47 26.00     24.994   24.629 ~ 1 0
31 [SBG2006] 60242 RR* 01 33 43.080 +30 48 33.28     25.477   24.721 ~ 2 0
32 [TYS2017] 113830 RR* 01 33 43.980 +30 48 51.08     25.750   25.356 ~ 1 0
33 [TYS2017] 80901 RR* 01 33 44.200 +30 48 26.54     25.411   24.780 ~ 1 0
34 [SSA2010] 1458 GlC 01 33 45.10 +30 47 46.7 17.210 17.081 16.298 15.823 15.311 ~ 40 0
35 [SBG2006] 88219 RR* 01 33 45.580 +30 47 55.20     25.113   24.879 ~ 2 0
36 [TYS2017] 86088 RR* 01 33 45.600 +30 48 55.18     25.345   25.040 ~ 1 0
37 [TYS2017] 97392 RR* 01 33 46.850 +30 48 07.44     25.579   25.135 ~ 1 0
38 [SBG2006] 116063 RR* 01 33 48.450 +30 48 38.95     26.142   25.287 ~ 2 0
39 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
40 [TYS2017] 72538 RR* 01 34 18.010 +30 38 32.69     25.241   24.861 ~ 1 0
41 [SBG2006] 63575 RR* 01 34 19.000 +30 37 49.46     25.402   24.996 ~ 2 0
42 [TYS2017] 64298 RR* 01 34 19.260 +30 37 56.23     25.076   24.725 ~ 1 0
43 [SBG2006] 76410 RR* 01 34 19.590 +30 37 14.70     25.657   24.824 ~ 2 0
44 [SBG2006] 73898 RR* 01 34 19.680 +30 37 33.11     25.329   24.832 ~ 2 0
45 [TYS2017] 86206 RR* 01 34 20.330 +30 36 45.11     25.396   25.022 ~ 1 0
46 [SBG2006] 94025 RR* 01 34 20.390 +30 37 12.04     25.962   25.015 ~ 2 0
47 [SBG2006] 119403 RR* 01 34 20.410 +30 38 29.77     26.641   25.388 ~ 2 0
48 [SBG2006] 59370 RR* 01 34 20.530 +30 38 46.74     25.134   24.740 ~ 2 0
49 [SBG2006] 69612 RR* 01 34 20.710 +30 36 44.52     25.382   24.859 ~ 2 0
50 [SBG2006] 68851 RR* 01 34 20.720 +30 36 51.92     25.194   24.865 ~ 2 0
51 [SBG2006] 94890 RR* 01 34 22.020 +30 37 38.86     25.861   25.077 ~ 2 0
52 [SBG2006] 70023 RR* 01 34 22.020 +30 38 54.29     25.345   24.907 ~ 2 0
53 [TYS2017] 86029 RR* 01 34 22.040 +30 37 59.97     25.534   24.929 ~ 1 0
54 [SBG2006] 77532 RR* 01 34 22.470 +30 37 23.32     25.405   24.896 ~ 2 0
55 [TYS2017] 98723 RR* 01 34 22.590 +30 39 08.08     25.640   25.217 ~ 1 0
56 [TYS2017] 87278 RR* 01 34 22.780 +30 36 42.30     25.314   25.078 ~ 1 0
57 [TYS2017] 56132 RR* 01 34 22.970 +30 37 23.47     24.985   24.666 ~ 1 0
58 [TYS2017] 74179 RR* 01 34 23.350 +30 38 03.08     25.180   24.917 ~ 1 0
59 [SBG2006] 87001 RR* 01 34 23.480 +30 38 02.59     25.642   25.060 ~ 2 0
60 [TYS2017] 64086 RR* 01 34 23.880 +30 37 11.63     25.061   24.808 ~ 1 0
61 [TYS2017] 92420 RR* 01 34 24.130 +30 37 01.27     25.619   25.041 ~ 1 0
62 [SBG2006] 88677 RR* 01 34 24.480 +30 35 55.29     25.791   24.901 ~ 2 0
63 [SBG2006] 72301 RR* 01 34 24.650 +30 36 25.94     25.343   24.861 ~ 2 0
64 [TYS2017] 71035 RR* 01 34 24.780 +30 37 08.70     25.052   24.874 ~ 1 0
65 [TYS2017] 84998 RR* 01 34 24.830 +30 36 56.22     25.373   25.023 ~ 1 0
66 [TYS2017] 59069 RR* 01 34 25.000 +30 39 04.30     25.409   25.071 ~ 1 0
67 [SBG2006] 43952 RR* 01 34 25.010 +30 39 06.13     25.210   24.759 ~ 2 0
68 [TYS2017] 47527 RR* 01 34 25.500 +30 38 57.43     25.130   24.802 ~ 1 0
69 [TYS2017] 75080 RR* 01 34 25.650 +30 35 48.08     25.234   24.934 ~ 1 0
70 [SBG2006] 82703 RR* 01 34 25.740 +30 37 53.37     25.530   25.007 ~ 2 0
71 [TYS2017] 80296 RR* 01 34 25.830 +30 36 25.66     25.197   24.884 ~ 1 0
72 [SBG2006] 85311 RR* 01 34 26.190 +30 37 45.42     25.727   24.848 ~ 2 0
73 [TYS2017] 44939 RR* 01 34 26.520 +30 38 26.44     24.910   24.709 ~ 1 0
74 [TYS2017] 49218 RR* 01 34 26.540 +30 39 10.82     25.272   24.824 ~ 1 0
75 [TYS2017] 89641 RR* 01 34 26.950 +30 37 21.17     25.466   25.011 ~ 1 0
76 [TYS2017] 56655 RR* 01 34 27.100 +30 38 56.29     25.477   24.888 ~ 1 0
77 [TYS2017] 87778 RR* 01 34 27.510 +30 36 49.44     25.452   24.978 ~ 1 0
78 [SBG2006] 49806 RR* 01 34 27.670 +30 39 19.95     25.328   24.804 ~ 2 0
79 [TYS2017] 83167 RR* 01 34 27.820 +30 37 06.95     25.280   24.956 ~ 1 0
80 [TYS2017] 77126 RR* 01 34 28.180 +30 36 25.16     25.157   25.038 ~ 1 0
81 [SBG2006] 53358 RR* 01 34 28.800 +30 38 22.35     25.333   24.940 ~ 2 0
82 [SBG2006] 95126 RR* 01 34 28.830 +30 36 55.17     25.970   25.004 ~ 2 0
83 [SBG2006] 97250 RR* 01 34 29.440 +30 36 41.98     25.695   25.247 ~ 2 0
84 [SBG2006] 67510 RR* 01 34 29.860 +30 37 41.84     25.662   25.212 ~ 2 0
85 [SBG2006] 50684 RR* 01 34 29.870 +30 38 19.32     25.311   24.815 ~ 2 0
86 [TYS2017] 60123 RR* 01 34 30.010 +30 38 13.56     25.448   25.022 ~ 1 0
87 [SSA2010] 2075 GlC 01 34 30.20 +30 38 13.0 17.848 17.880 17.127 16.618 16.108 ~ 34 0
88 [SBG2006] 21307 RR* 01 34 30.260 +30 38 12.64     24.680   24.347 ~ 2 0
89 [TYS2017] 51357 RR* 01 34 30.280 +30 37 03.76     25.347   25.138 ~ 1 0
90 [TYS2017] 57855 RR* 01 34 30.530 +30 38 03.21     25.025   24.793 ~ 1 0
91 [SBG2006] 45819 RR* 01 34 30.9090960696 +30 39 08.427387924     25.202   24.809 ~ 2 0
92 [SBG2006] 57039 RR* 01 34 31.840 +30 37 20.68     25.678   24.990 ~ 2 0
93 [SBG2006] 60843 RR* 01 34 31.880 +30 37 42.64     25.774   25.050 ~ 2 0
94 [TYS2017] 54946 RR* 01 34 32.320 +30 36 40.75     25.396   24.947 ~ 1 0
95 [TYS2017] 61639 RR* 01 34 32.490 +30 38 08.72     25.574   25.201 ~ 1 0
96 [SBG2006] 73401 RR* 01 34 32.580 +30 37 33.01     26.119   25.393 ~ 2 0
97 [SBG2006] 55610 RR* 01 34 33.870 +30 38 12.66     25.551   25.001 ~ 2 0
98 [SBG2006] 57000 RR* 01 34 33.940 +30 37 58.94     25.741   25.004 ~ 2 0
99 [TYS2017] 63714 RR* 01 34 35.550 +30 37 37.03     25.640   25.167 ~ 1 0
100 [TYS2017] 5877 RR* 01 34 57.250 +31 12 53.30     25.746   25.360 ~ 1 0
101 [TYS2017] 3781 RR* 01 34 57.940 +31 13 37.86     25.407   24.834 ~ 1 0
102 [TYS2017] 4523 RR* 01 34 59.750 +31 12 42.29     25.652   25.390 ~ 1 0
103 [TYS2017] 5330 RR* 01 35 01.580 +31 12 48.38     25.954   25.689 ~ 1 0
104 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
105 NAME Local Group GrG ~ ~           ~ 9325 0

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