A REVISION TO THE ABSOLUTE MAGNITUDES OF RR LYRAE STARS FROM THE BAADE-WESSELINK METHOD

被引:0
作者
FERNLEY, J
机构
关键词
STARS; FUNDAMENTAL PARAMETERS; VARIABLE;
D O I
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P1 [天文学];
学科分类号
0704 ;
摘要
It is argued that the zero-point from the recent Baade-Wesselink analyses of RR Lyrae stars is 0.07 mags too faint due to an inappropriate value of the p factor having been used (this factor corrects the observed pulsation velocity to the true pulsation velocity). Adopting this brighter zero-point brings the Baade-Wesselink calibration of the RR Lyrae Absolute Magnitude - Metallicity relation into closer agreement with theory and also the Baade-Wesselink RR Lyrae distance modulus to the Large Magellanic Cloud into closer agreement with other distance indicators.
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页码:L16 / L18
页数:3
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共 22 条
[11]   AN INVESTIGATION OF PHOTOELECTRIC RADIAL-VELOCITY SPECTROMETERS AS USED IN THE ANALYSIS OF CEPHEID VARIABLES [J].
HINDSLEY, R ;
BELL, RA .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1986, 98 (607) :881-888
[12]   THE BAADE-WESSELINK METHOD AND THE DISTANCES TO RR LYRAE STARS .7. THE FIELD STARS SW ANDROMEDAE AND DX DELPHINI AND A COMPARISON OF RECENT BAADE-WESSELINK ANALYSES [J].
JONES, RV ;
CARNEY, BW ;
STORM, J ;
LATHAM, DW .
ASTROPHYSICAL JOURNAL, 1992, 386 (02) :646-662
[13]   HYDRODYNAMIC MODELS OF A CEPHEID ATMOSPHERE .3. LINE SPECTRUM AND RADIUS DETERMINATIONS [J].
KARP, AH .
ASTROPHYSICAL JOURNAL, 1975, 201 (03) :641-652
[14]  
KOVACS G, 1992, ASTRON ASTROPHYS, V259, pL46
[15]   THE HORIZONTAL-BRANCH STARS IN GLOBULAR-CLUSTERS .1. THE PERIOD-SHIFT EFFECT, THE LUMINOSITY OF THE HORIZONTAL BRANCH, AND THE AGE-METALLICITY RELATION [J].
LEE, YW ;
DEMARQUE, P ;
ZINN, R .
ASTROPHYSICAL JOURNAL, 1990, 350 (01) :155-172
[16]  
LIU T, 1990, APJS, V69, P593
[17]   The luminosity scale of RR Lyrae stars with the Baade-Wesselink method. II. The absolute magnitudes of 13 field RR Lyrae stars [J].
Liu, Tianxing ;
Janes, Kenneth A. .
ASTROPHYSICAL JOURNAL, 1990, 354 (01) :273-294
[18]   THE RR LYRAE STARS IN AND AROUND THE LMC GLOBULAR-CLUSTER NGC-2257 [J].
NEMEC, JM ;
HESSER, JE ;
UGARTE, P .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1985, 57 (02) :287-+
[19]   PROPERTIES OF THE SN-1987A CIRCUMSTELLAR RING AND THE DISTANCE TO THE LARGE MAGELLANIC CLOUD [J].
PANAGIA, N ;
GILMOZZI, R ;
MACCHETTO, F ;
ADORF, HM ;
KIRSHNER, RP .
ASTROPHYSICAL JOURNAL, 1991, 380 (01) :L23-&