2002A&A...393..555P


Query : 2002A&A...393..555P

2002A&A...393..555P - Astronomy and Astrophysics, volume 393, 555-561 (2002/10-2)

Long term behaviour of the double-mode high-amplitude δ Scuti star RV Arietis.

POCS M.D., SZEIDL B. and VIRAGHALMY G.

Abstract (from CDS):

Stability of both the fundamental and first overtone oscillations of RV Ari was investigated by different methods which led to concordant results. The fundamental period of RV Ari has been decreasing very slowly with a rate of (1/P0)(dP0/dt)=-0.6x10–8yr–1 while the first overtone period has been increasing a little faster with a rate of (1/P1)(dP1/dt)=+0.9x10–8yr–1, if we assume linear period changes over the past 65 years. Although the very slow change in the periods is consistent with the evolutionary theories, the fact that the signs of the period changes for the two modes are opposite indicates that the dominating part of the period variation may be the result of non-evolutionary effects. The amplitudes of the fundamental and overtone oscillations have undergone small changes (several mmag) on a time scale of years, and a slight increase in the amplitude of the first overtone pulsation is suspected. An additional frequency at f2=13.6116c/d is found.

Abstract Copyright:

Journal keyword(s): stars: oscillations - stars: variables: δ Sct - stars: individual: RV Ari

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 V* RV Ari dS* 02 15 07.5021680088 +18 04 27.917480316   11.78       A 74 0
2 TYC 1217-952-1 * 02 15 10.8012226392 +18 07 58.325974860   11.60 10.83     ~ 2 0
3 GSC 01217-00628 * 02 28 15.6718343664 +19 51 55.234285884     12.30     ~ 1 0
4 V* V1162 Ori dS* 05 32 01.9910944584 -07 15 24.656437548   10.3 9.9     ~ 46 0
5 V* AI Vel dS* 08 14 05.1459825192 -44 34 32.854644660   6.98 6.70     A9IV/V 187 0
6 V* XX Pyx dS* 08 58 39.0320074224 -24 35 10.589779932           A4V 82 0
7 V* AN Lyn dS* 09 14 28.6859754192 +42 46 38.358171444   10.94 10.64     A7IV/V 58 0
8 V* AE UMa SX* 09 36 53.1551304240 +44 04 00.399819288   11.54 11.35     A9 96 0
9 V* FG Vir dS* 12 14 15.4565381808 -05 42 59.750820036   6.807 6.558     A8/9V 216 0
10 * 4 CVn dS* 12 23 47.0120783712 +42 32 33.862228260   6.382 6.022     F3III-IV 198 0

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