J/A+A/330/515 RR Lyrae parallaxes & proper motions (Fernley+ 1998)
The absolute magnitudes of RR Lyrae from HIPPARCOS parallaxes
and proper motions
Fernley J., Barnes T.G., Skillen I., Hawley S.L., Hanley C.J.,
Evans D.W., Solano E., Garrido R.
<Astron. Astrophys. 330, 515 (1998)>
=1998A&A...330..515F 1998A&A...330..515F (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Parallaxes, trigonometric ; Proper motions ;
Radial velocities ; Abundances, [Fe/H]
Keywords: stars: variables: RR Lyraes - Galaxy: globular clusters -
galaxies: Magellanic Clouds
Abstract:
We have used HIPPARCOS proper motions and the method of Statistical
Parallax to estimate the absolute magnitude of RR Lyrae stars. In
addition we used the HIPPARCOS parallax of RR Lyrae itself to
determine it's absolute magnitude. These two results are in excellent
agreement with each other and give a zero-point for the RR Lyrae
Mv,[Fe/H] relation of 0.77±0.15 at [Fe/H]=-1.53. This zero-point
is in good agreement with that obtained recently by several groups
using Baade-Wesselink methods which, averaged over the results from
the different groups, gives Mv=0.73±0.14 at [Fe/H]=-1.53. Taking
the HIPPARCOS based zero-point and a value of 0.18±0.03 for the
slope of the Mv,[Fe/H] relation from the literature we find firstly,
the distance modulus of the LMC is 18.26±0.15 and secondly, the mean
age of the Globular Clusters is 17.4±3.0 GYrs. These values are
compared with recent estimates based on other "standard candles" that
have also been calibrated with HIPPARCOS data. It is clear that, in
addition to astrophysical problems, there are also problems in the
application of HIPPARCOS data that are not yet fully understood.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 127 144 Basic data
table1.tex 113 534 LaTeX version of table1
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See also:
III/176 : RR Lyrae Metallicities (Layden 1994)
VI/45 : A bibliographical catalogue of RR Lyrae stars (Heck 1988)
Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star Star name
10 A1 --- n_Star [c] c for RRc, else RRab (1)
12- 19 F8.6 d Per Period (2)
21- 25 F5.2 mas plx Trigonometric parallax (3)
27- 30 F4.2 mas e_plx rms uncertainty on plx
32- 38 F7.2 mas/yr pmRA Proper motion in RA, µαcosδ (3)
40- 43 F4.2 mas/yr e_pmRA rms uncertainty on pmRA
45- 51 F7.2 mas/yr pmDE Proper motion in DE, µδ (3)
53- 57 F5.2 mas/yr e_pmDE rms uncertainty on pmDE
59- 63 F5.2 mag Vmag VJ magnitude (4)
65- 69 F5.2 mag Kmag ? K magnitude
71 I1 --- r_Kmag ? Reference for K magnitudes (5)
73- 77 F5.3 mag E(B-V) Reddening
79 I1 --- r_E(B-V) Reference for E(B-V) (6)
81- 84 I4 km/s RV Systemic radial velocity
86- 87 I2 km/s e_RV rms uncertainty on RV
89-103 A15 --- r_RV Reference(s) for RV (7)
105-109 F5.2 [Sun] [Fe/H] Metallicity (8)
111-125 A15 --- r_[Fe/H] Reference(s) for [Fe/H] (9)
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Note (1): The identification of the 'c' types is from the Fourier components
as discussed in section 2.3
Note (2): Periods were initially from the GCVS (Kholopov et al. 1985,
Cat. II/139)) and then refined using the HIPPARCOS photometry as
discussed in section 2.1
Note (3): Trigonometric Parallaxes and proper motions (and their errors) are
from HIPPARCOS
Note (4): VJ magnitudes are intensity mean magnitudes derived from the
HIPPARCOS photometry using the procedures described in section 2.1.
The error on these mean magnitudes is typically ±0.02
Note (5): K magnitudes from the following references:
1 = the Baade-Wesselink analyses listed in Skillen et al. (1993MNRAS.265..301S 1993MNRAS.265..301S)
2 = Fernley, Skillen and Burki (1993A&AS...97..815F 1993A&AS...97..815F)
3 = Unpublished.
Typically these have uncertainties of ±0.04
Note (6): E(B-V) is from the following:
1 = Burstein and Heiles (1982AJ.....87.1165B 1982AJ.....87.1165B)
2 = Using the Log(P)-(V-K) relations discussed in Section 2.2.
Uncertainties on these reddenings are ±0.015 for Burstein and Heiles
and ±0.03 for those derived from (V-K).
Note (7): The sources of the data are as follows:
1 = Skillen et al., 1993MNRAS.265..301S 1993MNRAS.265..301S
2 = Fernley et al., 1990MNRAS.247..287F 1990MNRAS.247..287F
3 = Meylan et al., 1986A&AS...64...25M 1986A&AS...64...25M
4 = Liu and Janes 1990, 1990ApJ...354..273L 1990ApJ...354..273L
5 = Jones et al., 1988ApJ...332..206J 1988ApJ...332..206J
6 = Carrillo et al., 1995A&AS..113..483C 1995A&AS..113..483C, Cat. J/A+AS/113/483
7 = Cacciari et al., 1987A&AS...69..135C 1987A&AS...69..135C
8 = Clementini et al., 1990A&AS...85..865C 1990A&AS...85..865C
9 = Solano et al., 1997A&AS..125..321S 1997A&AS..125..321S, Cat. J/A+AS/125/321
10 = Fernley and Barnes, 1997A&AS..125..313F 1997A&AS..125..313F, Cat. J/A+AS/125/313
11 = Hawley and Barnes, 1985PASP...97..551H 1985PASP...97..551H
12 = Fernley et al., 1993A&AS...97..815F 1993A&AS...97..815F
13 = Layden, 1994AJ....108.1016L 1994AJ....108.1016L, Cat. J/AJ/108/1016
14 = Woolley and Aly, 1966RGOB..114..259W 1966RGOB..114..259W
15 = Kinman, 1961RGOB...37..151K 1961RGOB...37..151K
16 = Clube, Evans and Jones, 1969MmRAS..72..101C 1969MmRAS..72..101C
17 = Breger, 1964MNSSA..23..112B 1964MNSSA..23..112B
18 = Notni, 1956MiJen..26....1N 1956MiJen..26....1N
19 = Joy, 1938PASP...50..302J 1938PASP...50..302J, 1950PASP...62...60J 1950PASP...62...60J, 1955PASP...67..420J 1955PASP...67..420J
Note (8): [Fe/H] use the relation [Fe/H]=-0.13-0.195{DELTA}S from
Fernley and Barnes (1997, A&AS, in press).
Typically the error on these abundances is ±0.15 dex.
Note (9): Sources of data are as follows:
1 = Suntzeff, Kraft and Kinman, 1991ApJ...367..528S 1991ApJ...367..528S
2 = Fernley and Barnes, 1997, A&AS, in press
3 = Solano et al., 1997, A&AS, in press
4 = Lambert et al., 1996ApJS..103..183L 1996ApJS..103..183L
5 = Clementini et al., 1995AJ....110.2319C 1995AJ....110.2319C, Cat. J/AJ/110/2319
6 = Layden, 1994AJ....108.1016L 1994AJ....108.1016L, Cat. J/AJ/108/1016
7 = Kemper, 1982AJ.....87.1395K 1982AJ.....87.1395K
8 = Butler, 1975ApJ...200...68B 1975ApJ...200...68B (unless superseded by ref 1)
9 = Preston, 1959ApJ...130..507P 1959ApJ...130..507P (unless superseded by ref 1)
10 = Kinman and Caretta, 1992PASP..104..111K 1992PASP..104..111K
11 = Smith, 1990PASP..102..124S 1990PASP..102..124S
12 = Clementini et al., 1991AJ....101.2168C 1991AJ....101.2168C
13 = Kinman, 1961RGOB...37..151K 1961RGOB...37..151K
14 = Clube, Evans and Jones, 1969MmRAS..72..101C 1969MmRAS..72..101C
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Individual notes:
Of the 180 stars classified by HIPPARCOS as RR Lyraes and observed by the
satellite the following stars were removed:
CH AQL: No metallicity
IN ARA: Poor quality HIPPARCOS data (like RW COL)
BH AUR: No reddening
BB CMI: Ecl. Var. (Schmidt et al., 1995AJ....109.1239S 1995AJ....109.1239S)
V363 CAS: Fourier Coefficient R(21) is unusual - Anom. Ceph (see section 2.3)
V753 CEN: Period too short (0.221 days)
EZ CEP: Poor quality HIPPARCOS data (like RW COL)
XZ CET: Fourier Coefficient R(21) is unusual - Anom. Ceph (see section 2.3)
RW COL: HIPPARCOS data are Poor quality (light curve has a lot of scatter
and Trig Parallax and Proper Motion have large errors)
V1719 CYG: Long period Delta Scuti (Fernley and Barnes, 1997, A&AS, in press)
VZ DRA: No metallicity
BX DRA: Ecl. Var. (Schmidt et al., 1995AJ....109.1239S 1995AJ....109.1239S)
XZ GRU: Period too long (0.883 days)
LS HER: Period too short (0.231 days)
SZ HYA: Poor quality HIPPARCOS data (like RW COL)
BI HYA: Constant V mag from HIPPARCOS photometry
ET HYA: Both constant V mag from HIPPARCOS and constant radial velocity
from spectra (Fernley and Barnes, 1997, A&AS, in press)
CZ LAC: Poor quality HIPPARCOS data (like RW COL)
CW LUP: Both constant V mag from HIPPARCOS and constant radial velocity
from spectra (Solano et al., 1997, A&AS, in press)
TV LYN: Period too short (0.241 days)
VY NOR: Poor quality HIPPARCOS data (like RW COL)
V429 ORI: Both constant V mag from HIPPARCOS and constant radial velocity
from spectra (Fernley and Barnes, 1997, A&AS, in press)
IV PAV: Period too short (0.203 days)
KN PER: Ecl. Var (Schmidt, 1991AJ....102.1766S 1991AJ....102.1766S)
ST PIC: No metallicity or radial velocity
SS PSC: Long period Delta Scuti (Fernley and Barnes, 1997, A&AS, in press)
IU PUP: Constant V mag from HIPPARCOS photometry
KZ PUP: Period too long (2.018 days)
V2232 SGR: Poor quality HIPPARCOS data (like RW COL)
V494 SCO: No Reddening
V690 SCO: No Reddening
UY SCL: Period too short (0.182 days)
AR SER: Fourier Coefficient R(21) is unusual - Anom. Ceph (see section 2.3)
CD VEL: No metallicity or radial velocity
BB VIR: Photometric evidence for HB Companion (Fernley, 1993Obs...113..197F 1993Obs...113..197F)
NSV5394: Constant V mag from HIPPARCOS photometry
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Acknowledgements: John Fernley
(End) Patricia Bauer [CDS] 11-Sep-1997