1998AJ....116.1724M


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.05CEST23:08:28

1998AJ....116.1724M - Astron. J., 116, 1724-1735 (1998/October-0)

A new analysis of RR Lyrae kinematics in the solar neighborhood.

MARTIN J.C. and MORRISON H.L.

Abstract (from CDS):

Full space velocities are computed for a sample of 130 nearby RR Lyrae variables using both ground-based and Hipparcos proper motions. In many cases proper motions for the same star from multiple sources have been averaged to produce approximately a factor of 2 improvement in the transverse space velocity errors. In most cases, this exceeds the accuracy attained using Hipparcos proper motions alone. The velocity ellipsoids computed for halo and thick-disk samples are in agreement with those reported in previous studies. A distinct sample of thin-disk RR Lyrae variables has not been isolated, but there is kinematic evidence for some thin-disk contamination in our thick-disk samples. Using kinematic and spatial parameters, a sample of 21 stars with [Fe/H] < -1.0 and disklike kinematics have been isolated. From their kinematics and spatial distribution we conclude that these stars represent a sample of RR Lyrae variables in the metal-weak tail of the thick disk that extends to [Fe/H] = -2.05. In the halo samples, the distribution of V velocities is not Gaussian, even when the metal-weak thick-disk stars are removed. Possibly related, a plot of U and W velocities as a function of V velocity for the kinematically unbiased halo sample shows some curious structure. The cause of these kinematic anomalies is not clear. In addition, systematic changes to the distance scale within the range of currently accepted values of Mv(RR) are shown to significantly change the calculated halo kinematics. Fainter values of Mv(RR), such as those obtained by statistical parallax (∼0.60 to 0.70 at [Fe/H] = -1.9), result in local halo kinematics similar to those reported in independent studies of halo kinematics, while brighter values of Mv(RR), such as those obtained through recent analysis of Hipparcos subdwarf parallaxes (∼0.30 to 0.40 at [Fe/H] = -1.9), result in a halo with retrograde rotation and significantly enlarged velocity dispersions.

Abstract Copyright:

Journal keyword(s): Galaxies: Structure - Stars: Variables: RR Lyrae Variable - Stars: Kinematics

Simbad objects: 133

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Number of rows : 133

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* RY Psc RR* 00 11 41.1025266710 -01 44 55.331087327   11.94 11.49     F2.5 79 0
2 V* SW And RR* 00 23 43.0897765461 +29 24 03.632673465 9.53 9.34 9.15     A7IIImF0 241 0
3 V* RX Cet RR* 00 33 38.2803060389 -15 29 14.804076872   11.7 11.85     A7 86 0
4 V* DR And RR* 01 05 10.7139370109 +34 13 06.288337929   13.66 12.42     ~ 52 1
5 V* XX And RR* 01 17 27.4143098635 +38 57 02.048480248   11.00 10.62     A2 121 0
6 V* RR Cet RR* 01 32 08.1732047748 +01 20 30.230643983 9.46 9.33 9.15     A9V 196 0
7 V* CI And RR* 01 55 08.2937601467 +43 45 56.491566146   12.47 12.07     A8 57 0
8 V* RV Cet RR* 02 15 14.9042429419 -10 48 00.720756821   11.30 10.85     F 84 0
9 V* RZ Cet RR* 02 28 32.4384162714 -08 21 30.113285518   11.74 11.53     A3 89 0
10 V* X Ari RR* 03 08 30.8844194016 +10 26 45.221908919 9.45 9.25 8.97     F0.5 272 0
11 V* SV Eri RR* 03 11 52.1075010054 -11 21 14.066820534   10.34 9.96     A1III 111 0
12 V* AR Per RR* 04 17 17.1973966622 +47 24 00.635143177 10.72 10.37 9.94     A3 155 0
13 V* RX Eri RR* 04 49 44.2915562112 -15 44 28.241786244 9.64 9.43 9.22     F2 164 0
14 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15333 1
15 V* TZ Aur RR* 07 11 35.0231898555 +40 46 37.148652580   12.44 11.55     A2 106 0
16 V* RR Gem RR* 07 21 33.5309119093 +30 52 59.465855758   12.34 11.92     A8 199 0
17 V* TW Lyn RR* 07 45 06.3012925787 +43 06 41.578305229   12.52 11.69     kA6hF6 63 0
18 V* AL CMi RR* 07 48 57.0589694253 +05 38 11.216388672   11.88 11.72     A3mF3 37 0
19 V* SZ Gem RR* 07 53 43.4535766628 +19 16 23.931428969   12.13 12.00 11.89   A0 97 0
20 V* SS Cnc RR* 08 06 25.5850846353 +23 15 05.629646237   12.40 12.11     A8.5 92 0
21 V* XX Pup RR* 08 08 28.2325836892 -16 31 59.633213488   11.54 11.30     A0-5 56 0
22 V* DD Hya RR* 08 12 31.8118167636 +02 50 05.009747054           Av 49 0
23 V* AS Cnc RR* 08 25 42.1587267697 +25 43 08.509062624     12.81     ~ 31 0
24 V* TT Cnc RR* 08 32 55.1814752895 +13 11 28.445049233   11.62 11.10     F0 124 0
25 V* ET Hya RR* 08 35 04.2167865477 -08 50 09.956632604   12.73 12.33     ~ 30 0
26 HIP 42115 * 08 35 05.6414977836 -08 50 45.186320656           ~ 23 0
27 V* GO Hya RR* 08 54 53.4980225704 +06 26 12.766523617     12.58     ~ 27 0
28 V* DG Hya RR* 08 58 06.3594959255 -05 26 25.185850386   11.40 12.29     ~ 33 0
29 V* DH Hya RR* 09 00 14.8275277853 -09 46 44.293312196 12.995 12.997 12.12     kA0hF0 57 1
30 V* TT Lyn RR* 09 03 07.7866525912 +44 35 08.122607393 9.87 9.75 9.51     A9.2 143 0
31 V* XX Hya RR* 09 09 49.4837777689 -15 35 58.704791685   10.50 12.39     ~ 38 0
32 BPS BS 17581-0021 RR* 09 13 48.8070883268 -09 19 08.751139596   11.64 11.46 11.29   CEMP 79 0
33 V* AQ Cnc RR* 09 17 38.9825093705 +12 39 03.717049537   12.21 12.20     A2 43 0
34 V* RW Cnc RR* 09 19 06.0345772904 +29 03 55.721842266           A5 95 0
35 V* WW Leo RR* 09 30 26.1380354017 +07 12 21.140798052   12.20 12.84     ~ 33 0
36 V* UU Hya RR* 09 36 29.7708308729 +04 06 40.429158798   10.70 12.60     A5 48 0
37 V* X LMi RR* 10 06 06.7278147829 +39 21 28.471006828   12.46 12.30     kA5hF7 53 0
38 V* RR Leo RR* 10 07 43.4604770180 +23 59 30.322184269 10.14 10.01 9.94     F0 172 0
39 V* WZ Hya RR* 10 13 24.1278067215 -13 08 17.396157119   10.47 10.27     A2 72 0
40 V* V LMi RR* 10 25 25.5878401160 +28 47 07.707943334   12.23 11.98     A8 72 0
41 V* RV Sex RR* 10 46 41.8008275760 -08 22 32.737412900   12.16 11.91     A1 25 0
42 V* SZ Leo RR* 11 01 36.8474727678 +08 09 56.099225004   12.8 12.55 12.0   A 50 0
43 V* TV Leo RR* 11 11 21.9329779882 -05 53 31.443645863     12.35     A1 77 0
44 V* AN Leo RR* 11 23 22.4773525315 +06 38 05.209453506   12.93 12.51 12.63   ~ 25 0
45 V* RX Leo RR* 11 23 58.3534574744 +26 36 54.076727349   12.26 12.05     F2 65 0
46 V* AE Leo RR* 11 26 12.1903865074 +17 39 39.693740341   12.65 12.06 12.3   A0 32 0
47 V* TU UMa RR* 11 29 48.4896121348 +30 04 02.380342849 9.56 9.41 9.26     F2 208 0
48 V* AX Leo RR* 11 33 03.7555718216 +12 09 13.873174130   12.20 12.44     A2 47 0
49 V* SS Leo RR* 11 33 54.4935493540 -00 02 00.035385354   10.52       F1 150 0
50 V* SU Dra RR* 11 37 56.6071560912 +67 19 47.060820644 9.52 9.37 9.27     F2-F7 241 0
51 V* ST Leo RR* 11 38 32.6788581057 +10 33 41.739423304   11.85 11.50     F2 121 0
52 V* AA Leo RR* 11 39 14.2330001645 +10 19 38.434723933   12.77 12.37     kA5.5hF6 54 0
53 V* X Crt RR* 11 48 56.2214893310 -10 26 28.518776071   9.99 11.62     A2 72 0
54 V* UU Vir RR* 12 08 35.0723483286 -00 27 24.303909321 10.13 9.99 9.90     F2 148 1
55 V* AB UMa RR* 12 11 14.5891636363 +47 49 43.794358629   11.42 10.88     F2 52 0
56 V* SW Dra RR* 12 17 46.6286160546 +69 30 38.234300209   10.87 10.55     A7-F8 143 0
57 V* UV Vir RR* 12 21 16.7293356570 +00 22 03.039223864   12.33 12.25     A4 65 0
58 V* UZ CVn RR* 12 30 27.7043820720 +40 30 32.027486203   12.23 12.11     A8 57 0
59 V* S Com RR* 12 32 45.6250691009 +27 01 45.414686137   11.64 11.74     F4 113 0
60 V* SV CVn RR* 12 35 55.9884094200 +37 12 24.684745071   11.60 12.77     A0 41 0
61 V* BQ Vir RR* 12 36 27.3229096262 -02 25 32.621034047   12.34 12.92     ~ 23 0
62 V* SW CVn RR* 12 40 55.0178274814 +37 05 06.846299577   13.47 13.09 13.16   A0 44 0
63 V* Z CVn RR* 12 49 45.3820338361 +43 46 25.197095331   12.51 12.12     A5 81 0
64 V* AS Vir RR* 12 52 45.8687202862 -10 15 36.378519137   12.37 11.90     A6 62 0
65 V* AT Vir RR* 12 55 10.5415534768 -05 27 32.318795028   11.63 11.62     A2 95 0
66 V* RY Com RR* 13 05 07.9830909539 +23 16 42.381531439   12.89 13.01     A5 65 0
67 V* ST Com RR* 13 17 51.3447339785 +20 46 50.759599723   12.03 11.92     F5 75 0
68 V* AV Vir RR* 13 20 11.5638547339 +09 11 16.372550856   12.14 11.88     A4 78 0
69 V* RV UMa RR* 13 33 18.0839321976 +53 59 14.600235593   10.97 10.9     F0 160 0
70 V* RZ CVn RR* 13 45 03.0162252054 +32 39 16.711096240   11.98 11.60     A0 90 0
71 V* SS CVn RR* 13 48 15.9422814070 +39 54 03.013063031   12.00 11.80     A0 69 0
72 V* UY Boo RR* 13 58 46.3368601426 +12 57 06.457480567   11.18 10.81     A2 117 0
73 V* RU CVn RR* 13 59 33.1960875258 +31 39 04.139625102   11.46 12.24     A2 55 0
74 V* W CVn RR* 14 06 27.9805708541 +37 49 41.460062705   10.81 11.18     F2III 113 0
75 V* SW Boo RR* 14 27 34.9404910156 +36 02 44.495696419   11.85 12.72     A 63 0
76 V* ST Vir RR* 14 27 39.0736824445 -00 54 05.801138124     11.97     A 90 0
77 V* AF Vir RR* 14 28 09.8217903556 +06 32 43.928103443   11.84 11.83     A2 47 0
78 V* RS Boo RR* 14 33 33.2135752780 +31 45 16.614075660 9.94 9.83 9.73     A3-F5 180 0
79 V* SZ Boo RR* 14 42 13.3675801472 +28 12 23.600317687   12.03 12.78     A3 51 0
80 V* TW Boo RR* 14 45 05.9457717039 +41 01 44.140964265   11.72 11.45     F5 107 0
81 V* BT Dra RR* 14 51 44.6428850975 +60 04 09.039813965   11.76 11.49     A8 58 0
82 V* UU Boo RR* 15 17 05.2604081947 +35 06 56.520825778   12.47 12.28     kA9.5hF6 70 0
83 V* TV Lib RR* 15 18 21.8873919841 -08 27 42.759058245     12.03     F0 54 0
84 V* TV CrB RR* 15 22 21.4408013856 +26 52 37.668953311   12.34 12.14     A0 48 0
85 V* CS Ser RR* 15 28 36.3331527495 +03 05 23.583165854   12.31 12.68     F1 35 0
86 V* ST Boo RR* 15 30 39.2301811764 +35 47 04.314521651   11.22 11.13     F2 103 0
87 V* VY Ser RR* 15 31 01.9269663492 +01 41 01.763045836 10.07 9.97 9.73     A5/7Ib/II 171 0
88 V* AR Ser RR* 15 33 30.8124272096 +02 46 37.887440390   11.92 11.85     F3 66 0
89 V* VY Lib RR* 15 51 16.9892914153 -15 45 03.342347141   11.95 12.10     F2 57 0
90 V* AN Ser RR* 15 53 31.0534276964 +12 57 40.113021480   11.32 10.93     F0 121 0
91 V* AT Ser RR* 15 55 40.3717261323 +07 59 19.598605796   11.68 11.24     F2 86 0
92 V* AV Ser RR* 16 03 41.8338837019 +00 35 56.865264009   12.01 11.54     F2 70 0
93 V* V445 Oph RR* 16 24 41.2159030246 -06 32 29.926362675   11.59 11.30     F2.5 115 0
94 V* V413 Oph RR* 16 25 11.1041911497 -10 31 25.499222406     12.12     F6 34 0
95 V* RW Dra RR* 16 35 31.6039215643 +57 50 23.169223443   11.87 11.48     A5 148 0
96 V* GY Her RR* 16 38 18.0427605136 +37 48 04.873705325   12.70 13.01     ~ 26 0
97 V* VZ Her RR* 17 13 04.0032143250 +35 58 43.027089446   12.27 11.89 11.79   kA0.5hA9.5/kF1hF7 112 0
98 V* DL Her RR* 17 20 22.4582168910 +14 30 38.625829061     12.57     A0 40 0
99 V* ST Oph RR* 17 33 59.3723807775 -01 04 51.066915644   12.52 12.55     kA3hF0.5/kF0hF6.5 75 0
100 V* TW Her RR* 17 54 31.2004377712 +30 24 37.679750698   11.54 11.26     F6 135 1
101 V* BC Dra RR* 18 14 19.0686909154 +76 41 08.379195126   11.78 11.67     B 43 0
102 V* V455 Oph RR* 18 15 18.5276352951 +12 21 08.488327509           A7 49 0
103 V* IO Lyr RR* 18 22 37.9954032715 +32 57 32.602042906   11.90 13.96     F3.5 68 0
104 V* AE Dra RR* 18 27 06.7446556121 +55 29 32.773925641     12.68     F1 33 0
105 V* CN Lyr RR* 18 41 15.9455510880 +28 43 21.180262324   11.93 11.38     F5 81 0
106 V* RZ Lyr RR* 18 43 37.8850489266 +32 47 53.952220477   11.78 11.57     A2 109 0
107 HIP 92221 * 18 47 40.3308319877 +35 59 34.030048847   11.85 11.34     K0V 64 0
108 V* EZ Lyr RR* 18 47 41.1916103626 +35 59 26.565257531   12.03 11.58 11.93   kA9hF6.5 69 0
109 V* XZ Dra RR* 19 09 42.6074440363 +64 51 32.134269050   10.40 10.12     F0 141 0
110 V* BK Dra RR* 19 18 20.6704612731 +66 24 47.962563063   11.44 10.99     A8 70 0
111 V* BN Vul RR* 19 27 56.0611781164 +24 20 50.469413784   11.62 11.13     kA8hF4 95 0
112 V* XZ Cyg RR* 19 32 29.3054833102 +56 23 17.494421260   9.94 9.68     A5-F7 252 0
113 V* V341 Aql RR* 20 32 31.5583800810 +00 35 07.048561824   11.0 10.89 10.8   A9.5 109 0
114 V* AA Aql RR* 20 38 15.0762309159 -02 53 25.015503028   11.96 12.14     A8.5 89 0
115 V* DX Del RR* 20 47 28.3556417515 +12 27 50.682381539 9.97 9.79 9.52     A7IIIv 164 0
116 V* UY Cyg RR* 20 56 28.3031078271 +30 25 40.325903355   11.37 11.1     G 88 0
117 V* BT Aqr RR* 20 57 48.4064761138 -05 41 06.675157694   11.00 12.44     A 32 0
118 V* RV Cap RR* 21 01 28.8699467368 -15 13 46.093069929   11.11 10.97     A8 93 0
119 V* CP Aqr RR* 21 10 12.8486433405 -01 43 16.146168219   12.19 11.70     F0 54 0
120 V* SW Aqr RR* 21 15 17.8507697697 +00 04 34.870552843   11.56 11.51     A3 101 0
121 V* DM Cyg RR* 21 21 11.5417750255 +32 11 28.706822821   11.83 11.63     F2.5 108 0
122 V* SX Aqr RR* 21 36 08.4465939805 +03 13 50.017353516   12.19 11.83     A2 82 0
123 V* CG Peg RR* 21 41 16.7875479069 +24 46 24.469443232   11.43 11.13     F1 84 0
124 V* AV Peg RR* 21 52 02.7946161616 +22 34 29.376544849 10.26 10.07 9.87     F0 160 0
125 V* TZ Aqr RR* 22 01 55.5124623703 -05 36 02.528810005   12.33 11.58     F0 55 0
126 V* VV Peg RR* 22 13 03.8847610402 +18 27 04.358599430   11.88 11.54     F1.5 92 0
127 V* CZ Lac RR* 22 19 30.7340413018 +51 28 14.820148426   11.10 11.20     F1 75 0
128 V* CQ Lac RR* 22 21 10.4029669212 +39 43 12.524572285   12.70 12.38     ~ 32 0
129 V* BH Peg RR* 22 53 01.0369767270 +15 47 16.608265661   10.88 10.36     F2 113 0
130 V* BO Aqr RR* 22 54 08.2706570066 -12 21 38.182538028   12.63 12.00     kA7hF1 52 0
131 V* DZ Peg RR* 23 20 07.0352986693 +16 04 06.984642995   12.04 11.73     A8 39 0
132 V* BR Aqr RR* 23 38 32.8906660939 -09 19 07.471368615   11.38 11.31     F1 77 0
133 V* AT And RR* 23 42 30.8403486597 +43 00 51.687778650   11.14 10.60     F2.5 83 0

    Equat.    Gal    SGal    Ecl

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2021.05.05-23:08:28

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