2010A&A...510A..39C


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.19CET16:22:18

2010A&A...510A..39C - Astronomy and Astrophysics, volume 510, A39-39 (2010/2-1)

First CoRoT light curves of RR Lyrae stars. Complex multiplet structure and non-radial pulsation detections in V1127 Aquilae.

CHADID M., BENKO J.M., SZABO R., PAPARO M., CHAPELLIER E., KOLENBERG K., PORETTI E., BONO G., LE BORGNE J.-F., TRINQUET H., ARTEMENKO S., AUVERGNE M., BAGLIN A., DEBOSSCHER J., GRANKIN K.N., GUGGENBERGER E. and WEISS W.W.

Abstract (from CDS):

The CoRoT - Convection Rotation and planetary Transits - space mission is a great opportunity for monitoring stars with excellent time-sampling and unprecedented photometric precision for up to 150 days. As an important benefit, high-quality RR Lyrae light curves are obtained with a quasi-uninterrupted coverage over several pulsation and Blazhko cycles. The Blazhko effect in RR Lyrae stars is an unsolved problem of astrophysics. We used the high-precision space data to contribute more precise knowledge to explain the possible physical processes behind the phenomenon. We applied different period-finding techniques including Period04, MuFrAn, PDM and SigSpec. Amplitude and phase modulation were investigated by an analytical function method as well as with the traditional O-C diagrams. The Blazhko modulation frequency is directly detected in the spectrum, as well as its first and second harmonics. It shows the non-linear nature of the Blazhko modulation. Besides the triplets, further higher-order modulation side peaks appear around the pulsation frequency as quintuplet, septuplet, nonuplet, undecaplet, tredecaplet, quindecaplet and sepdecaplet structures. Additional frequencies, not belonging to the classical multiplet structures, are detected, as well as their linear combinations with the fundamental radial mode. We interpret these additional terms as non-radial modes. During the five consecutive Blazhko cycles, there is a shift of the maximum phase around 0.011 pulsation phase which is likely the consequence of a long term modulation.

Abstract Copyright:

Journal keyword(s): stars: atmospheres - stars: variables: RR Lyr - techniques: photometric - methods: data analysis - hydrodynamics - space vehicles

VizieR on-line data: <Available at CDS (J/A+A/510/A39): table1.dat>

Simbad objects: 11

goto Full paper

goto View the reference in ADS

Number of rows : 11

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 UCAC2 31827126 dS* 06 45 29.2319212282 +00 23 05.002377261   14.9 14.098 13.77   K2V 7 0
2 V* AQ Leo RR* 11 23 55.2750743728 +10 18 59.080007685           A1 70 0
3 V* RV UMa RR* 13 33 18.0839321976 +53 59 14.600235593   10.97 10.9     F0 158 0
4 V* MW Lyr RR* 18 19 53.8178963804 +31 58 54.622000023           ~ 42 0
5 V* V1127 Aql RV* 19 24 00.1006678790 +01 41 48.506796163     14.955     ~ 32 0
6 2MASS J19250542+0139236 El* 19 25 05.429 +01 39 23.64     16.161     ~ 7 0
7 CoRoT 101128793 RR* 19 26 37.3218997110 +01 13 34.777258598   15.6 15.928 14.8   ~ 18 0
8 2MASS J19281363+0040423 RR* 19 28 13.632 +00 40 42.34     15.864     ~ 9 0
9 CoRoT 101370131 RR* 19 28 14.4101983703 +00 06 02.232858781     15.601     ~ 10 0
10 CoRoT 101503544 V* 19 29 10.1274451825 +00 43 46.918134731   16.092 14.745 14.482   ~ 6 0
11 V* DM Cyg RR* 21 21 11.5417750255 +32 11 28.706822821   11.83 11.63     F2.5 106 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2010A&A...510A..39C and select 'bookmark this link' or equivalent in the popup menu


2021.01.19-16:22:18

© Université de Strasbourg/CNRS

    • Contact