2012MNRAS.419.2774B

Query : 2012MNRAS.419.2774B

2012MNRAS.419.2774B - Mon. Not. R. Astron. Soc., 419, 2774-2782 (2012/February-1)

Fundamental parameters of RR Lyrae stars from multicolour photometry and kurucz atmospheric models - II. Adaptation to double-mode stars.

BARCZA S. and BENKO J.M.

Abstract (from CDS):

Our photometric-hydrodynamic method is generalized to determine the fundamental parameters of multiperiodic radially pulsating stars. We report 302 UBV(RI)CJohnson-Kron-Cousins observations of GSC 4868-0831. Using these and the published photometric data of V372 Ser, we determine the metallicity, reddening, distance, mass, radius, equilibrium luminosity and effective temperature. The results underline the necessity of using multicolour photometry, including an ultraviolet band, to classify the subgroups of RR Lyrae stars properly. Our U observations might reveal that GSC 4868-0831 is a subgiant star pulsating in two radial modes and that V372 Ser is a giant star with the size and mass of an RRd star.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): hydrodynamics - stars: atmospheres - stars: fundamental parameters - stars: individual: GSC 4868-0831 - stars: individual: V372 Ser - stars: variables: RR Lyrae

Simbad objects: 14

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Number of rows : 14
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 TYC 4868-436-1 * 08 47 28.5623381520 -03 35 52.227551112   13.31 12.24 12.64 11.90 ~ 1 0
2 SCR J0847-0334 PM* 08 47 34.8805447176 -03 34 44.514131052   12.81   11.85 11.64 ~ 2 0
3 GSC 04868-00860 * 08 47 39.6620810832 -03 32 22.658509104   12.97   12.65 11.98 ~ 1 0
4 V* V500 Hya RR* 08 47 46.9373059512 -03 39 00.283950180   11.13 10.75     ~ 15 0
5 GSC 04868-01089 * 08 47 55.0011226968 -03 39 31.095339588   13.52   12.94 12.18 ~ 1 0
6 GSC 04868-00779 * 08 47 58.7458101528 -03 37 59.554925832   12.89   12.57 11.90 ~ 1 0
7 V* T Sex RR* 09 53 28.3999961376 +02 03 26.346205512 10.22 10.04 9.82     A1V 172 0
8 V* AQ Leo RR* 11 23 55.2752313792 +10 18 59.076153504           kA5hF3.5 88 0
9 V* SU Dra RR* 11 37 56.6071282968 +67 19 47.060102316 9.52 9.37 9.27     kA2.5hA9.5 264 0
10 V* BS Com RR* 13 34 39.2100269016 +24 16 38.025090480   13.211 12.914 12.856   kA2.5hA8.5 28 0
11 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
12 V* V372 Ser RR* 15 17 34.9961891304 -01 05 16.745037000   11.53 10.90     ~ 24 0
13 TYC 5002-506-1 * 15 17 45.7875011016 -01 02 44.255625720 12.111 12.09 11.79 11.38 11.126 ~ 6 0
14 GSC 05002-00566 * 15 17 54.1499112096 -01 02 20.396883732 13.533 13.481 12.936   12.268 ~ 3 0

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