2019AcA....69...45L

Query : 2019AcA....69...45L

2019AcA....69...45L - Acta Astron., 69, 45-54 (2019/March-0)

Secular Period Variations of RR Lyrae Stars in NGC 4147.

LUNA A. and ARELLANO FERRO A.

Abstract (from CDS):

A compilation of photometric time-series data of NGC 4147 spanning 58 years, enabled us to study the secular behavior of the pulsation period in the population of RR Lyr stars in this cluster. The traditional O-C diagram approach was employed. Three stars display a significant period decrease and two a comparable period increase. Nevertheless, the median value of the whole sample is nearly zero, which seems consistent with theoretical expectations. The limitations of empirical determinations of secular period changes in globular clusters to corroborate evolutionary theoretical predictions are discussed.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual: NGC 4147 - Stars: variables: RR Lyrae

Simbad objects: 34

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Number of rows : 34
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 Cl* NGC 4147 NEW V1 RR* 12 09 59.3645997072 +18 31 48.131502600   17.29 17.07     ~ 20 0
2 Cl* NGC 4147 NEW V10 RR* 12 10 03.7214687136 +18 31 48.088931628   17.32 17.08     ~ 15 0
3 Cl* NGC 4147 NEW V3 RR* 12 10 04.3550655984 +18 31 58.107508032   17.16 16.97     ~ 13 0
4 Cl* NGC 4147 NEW V2 RR* 12 10 04.9363338312 +18 32 04.247448684   17.28 17.02     ~ 13 0
5 Cl* NGC 4147 NEW V11 RR* 12 10 05.5117756567 +18 31 51.511755485   17.13 16.88     ~ 12 0
6 2MASS J12100561+1832114 LP* 12 10 05.6084783160 +18 32 11.316272352           ~ 5 0
7 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
8 Cl* NGC 4147 NEW V13 RR* 12 10 06.3484039176 +18 32 13.827683184   16.98 16.71     ~ 9 0
9 Cl* NGC 4147 NEW V4 RR* 12 10 06.3737721024 +18 32 49.771447512   16.91 16.70     ~ 11 0
10 Cl* NGC 4147 NEW V7 RR* 12 10 06.6332007288 +18 32 39.459505272   17.24 16.89     ~ 13 0
11 Cl* NGC 4147 NEW V12 RR* 12 10 06.6770228616 +18 32 28.118835600   17.2 16.9     ~ 10 0
12 Cl* NGC 4147 NEW V14 RR* 12 10 06.9238085460 +18 32 32.139805908   17.18 16.91     ~ 7 0
13 Cl* NGC 4147 NEW V8 RR* 12 10 06.9297146064 +18 32 34.528906104   17.23 16.91     ~ 7 0
14 NGC 4147 437 RR* 12 10 06.99 +18 32 24.9   17.15 16.94     ~ 8 0
15 NGC 4147 134 RR* 12 10 07.3326647088 +18 32 39.774888096   16.57 16.38     ~ 12 0
16 NGC 4147 145 * 12 10 07.4 +18 32 35   16.94 16.75     ~ 6 0
17 Cl* NGC 4147 NEW V9 RR* 12 10 08.24 +18 32 59.7   17.09 16.94     ~ 6 0
18 Cl* NGC 4147 NEW V6 RR* 12 10 08.4851517240 +18 32 59.744453784   17.21 16.91     ~ 13 0
19 NGC 4147 106 RR* 12 10 10.6471260000 +18 34 50.907154620   16.98 16.74     ~ 13 0
20 Cl* NGC 4147 SAW V19 RR* 12 10 21.9542431320 +18 35 01.712817708   17.19 16.96     ~ 14 0
21 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
22 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
23 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
24 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
25 M 107 GlC 16 32 31.86 -13 03 13.6           ~ 835 0
26 M 14 GlC 17 37 36.15 -03 14 45.3   9.55 5.73     ~ 420 0
27 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
28 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
29 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
30 V* RR Lyr RR* 19 25 27.9129605304 +42 47 03.693258204   7.36   7.6   kA3hF0 951 0
31 NGC 6934 GlC 20 34 11.37 +07 24 16.1           ~ 459 0
32 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 562 0
33 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
34 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1114 1

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