# Long-term photometric monitoring of Messier 5 variables – I. Period changes of RR Lyrae stars

@article{Szeid2010LongtermPM,
title={Long-term photometric monitoring of Messier 5 variables – I. Period changes of RR Lyrae stars},
author={B. Szeid and Zs. Hurta and Johanna Jurcsik and Christine M. Coutts Clement and M. Lovas},
journal={Monthly Notices of the Royal Astronomical Society},
year={2010},
volume={411},
pages={1744-1762}
}
• Published 6 October 2010
• Physics
• Monthly Notices of the Royal Astronomical Society
The period changes of 86 M5 RR Lyrae stars have been investigated on a 100-yr time base. The published observations have been supplemented by archival Asiago, Konkoly and Las Campanas photographic observations obtained between 1952 and 1993. About two-thirds of the O - C diagrams could be fitted by a straight line or a parabola. 21 RR Lyrae stars have increasing, 18 decreasing and 16 constant period. The mean rates of period change of these variables are: 〈β〉 = 〈P〉 = -0.006 ± 0.162 d Myr -1…

## Figures and Tables from this paper

### Long-term photometric monitoring of RR Lyrae stars in Messier 3

• Physics
• 2011
The period-change behaviour of 134 RR Lyrae stars in the globular cluster Messier 3 (M3) is investigated on the ∼120 yr time-base of the photometric observations. The mean period-change rates (β≈

### Studies of RR Lyrae Variables in Binary Systems. I. Evidence of a Trimodal Companion Mass Distribution

• Physics
The Astrophysical Journal
• 2021
We present 87 candidates for RR Lyrae variable stars in binary systems, based on our new search using the light-travel time effect (LTTE) and observed − calculated (O − C) diagrams in the Galactic

### A New Overview of Secular Period Changes of RR Lyrae stars in M5

• Physics
• 2016
Secular period variations, $\beta=\dot{P}$, in 76 RR Lyrae stars in the globular cluster M5 are analysed using our most recent CCD $V$ photometry and the historical photometric database available in

### The BV Photometry of the RR Lyrae Star, BH Ursae Majoris: Light Curves and Period Study

• Physics
• 2011
m 47 in V, and 0. m 11 in B-V and with a small hump between 0. p 82 and 0. p 86. We determined nine new times of minimum light and eight times of maximum light. We also analyzed all of the available

### Cyclic variations in O−C diagrams of field RR Lyrae stars as a result of LiTE

• Physics, Geology
• 2016
This paper presents an extensive overview of known and proposed RR Lyrae stars in binaries. The aim is to revise and extend the list with new Galactic field systems. We utilized maxima timings for 11

### Historical vanishing of the blazhko effect of RR lyr from the GEOS and kepler surveys

• Physics
• 2014
RR Lyr is one of the most studied variable stars. Its light curve has been regularly monitored since the discovery of the periodic variability in 1899. Analysis of all observed maxima allows us to

### THE HORIZONTAL BRANCH OF NGC 1851: CONSTRAINTS FROM ITS RR LYRAE VARIABLES

• Physics, Biology
• 2012
It is suggested that the pulsational properties of RR Lyrae stars can be very useful for tracing the various subpopulations and can provide suitable constraints on the multiple population phenomenon.

### Period Changes of Mira Variables, RR Lyrae Stars, and Type II Cepheids

Mira variables, RR Lyrae variables, and type II Cepheids all represent evolved states of low-mass stars, and long term observations have revealed that changes in pulsation period occur for each of

### The SERMON project: 48 new field Blazhko stars and an investigation of modulation-period distribution

• Physics
• 2016
We investigated 1234 fundamental mode RR Lyrae stars observed by the All Sky Automated Survey (ASAS) to identify the Blazhko (BL) effect. A sample of 1547 BL stars from the literature was collected

### KIC 2831097 – a 2-yr-orbital-period RR Lyrae binary candidate

• Physics
• 2017
We report the discovery of a new Kepler first-overtone RR Lyrae pulsator, KIC 2831097. The pulsation shows large, 0.1 d amplitude, systematic phase variations that can be interpreted as light

## References

SHOWING 1-10 OF 32 REFERENCES

### BV Photometry of the RR Lyrae Variables of the Globular Cluster M3

• Physics
• 1995
We present new BV CCD photometry, light curves, and ephemerides for 207 RR Lyrae variables in the globular cluster M3. For 127 of these we present observed minus calculated (O-C) diagrams. The data

### Stellar evolution and period changes in RR Lyrae stars

The observed secular period changes of RR Lyrae stars in five globular clusters have been compared with those predicted by synthetic models of the horizontal branch (HB). It is shown that most of the

### CCD Photometry of RR Lyrae Stars in M5 as a Test for the Pulsational Scenario

• Physics
• 1996
In this paper we present new CCD investigations of RR Lyrae pulsators in the Oo.I globular cluster M5. B V curves of light for 15 RR Lyrae are presented. With the addition of further 11 curves of

### RR Lyrae Variables in the Globular Cluster M55. The First Evidence for Nonradial Pulsations in RR Lyrae Stars

• Physics
• 1999
We present the results of a photometric study of RR Lyrae variables in the field of the globular cluster M55. We have discovered nine new RR Lyrae stars, increasing the number of known RR Lyrae

### Stellar evolution through the ages: period variations in galactic RRab stars as derived from the GEOS database and TAROT telescopes

• Physics
• 2007
Context. The theory of stellar evolution can be more closely tested if we have the opportunity to measure new quantities. Nowadays, observations of galactic RR Lyr stars are available on a time

### PHOTOMETRY OF RR LYRAE VARIABLES IN THE GLOBULAR CLUSTERS M5 AND M92

• Physics
• 1992
Visual photometry at V and i has been obtained for five RR Lyrae variables in the extremely metal-poor globular cluster M92 and eight in the cluster M5, of intermediate metallicity, for use in a

### The distance to M5 from its RR Lyrae variables

• Physics
• 1987
We have applied a variation of the Baade-Wesselink method to four RR Lyrae variables in the moderately metal-poor globular cluster M5. The radial velocity curves are from observations with the 200

### Period Changes in ω Centauri RR Lyrae Stars

• Physics
• 2000
A century of observations of ω Centauri allows us to accurately follow the period changes of a large sample of variable stars. Although the period changes are composed of monotone and irregular

### Stellar evolution and variability in the pre-ZAHB phase

• Physics
• 2008
Context. One of the most dramatic events in the life of a low-mass star is the He flash, which takes place at the tip of the red giant branch and is followed by a series of secondary flashes before

### An RR Lyrae period shift in terms of the Fourier parameter Phi sub 31

• Physics
• 1992
The Fourier phase parameter Phi sub 31 has been determined for RRc stars in five globular clusters, NGC 6171, M5, M3, M53, and M15. The results indicate that the RRc stars in a given cluster show a