J/A+AS/125/313 RR Lyrae radial velocities and [Fe/H] I. (Fernley+ 1997)
Radial velocities and iron abundances of field RR Lyraes. I.
Fernley J., Barnes T.G.
<Astron. Astrophys. Suppl. Ser. 125, 313 (1997)>
=1997A&AS..125..313F 1997A&AS..125..313F (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Abundances, [Fe/H] ; Radial velocities
Keywords: stars: abundances ; V363 Cas ; AT And -
stars: binaries: spectroscopic - stars: variables - stars: kinematics
Abstract:
We present systemic velocities and iron abundances for 56 RR Lyraes,
the majority of which have been observed by the HIPPARCOS satellite.
Comparison between our systemic velocities and previous values
identifies several binary candidates only one of which, TU UMa, was
previously suspected of being a binary. However, spectra of the
unusual RR Lyrae BB Vir show no evidence of line doubling and hence do
not support the recent claims that this star may have a Blue
Horizontal Branch companion. Comparison between our abundances and
previous determinations shows reasonable agreement except with the
recent work of Layden (1994, Cat. J/AJ/108/1016) where we find
systematic differences. Several of the stars included on the HIPPARCOS
observing list as RR Lyraes are shown to be mis-classified. Of
particular interest are the stars V363 Cas and AT And which, by
analogy with XZ Cet, may be anomalous Cepheids.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
appen.dat 142 56 Radial velocities and metal abundances of RR Lyr
appen.tex 118 188 LaTeX version of appen
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See also:
J/A+AS/125/321 : RR Lyrae radial velocities and [Fe/H] II. (Solano+ 1997)
Byte-by-byte Description of file: appen.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 11 I2 h RAh Right Ascension J2000 (hours) (5)
13- 14 I2 min RAm Right Ascension J2000 (minutes) (5)
16- 17 I2 s RAs Right Ascension J2000 (seconds) (5)
19 A1 --- DE- Declination J2000 (sign) (5)
20- 21 I2 deg DEd Declination J2000 (degrees) (5)
23- 26 F4.1 arcmin DEm Declination J2000 (minutes) (5)
28- 35 F8.6 d Per ? Pulsation period
36 A1 --- Note [c*&] Note on star (1)
38- 42 F5.2 Sun [Fe/H] ? Abundance calculated in this work
44- 48 F5.2 Sun [Fe/H]1 ? Abundance taken from the literature (2)
50 I1 --- r_[Fe/H]1 ? [1/9] Reference for [Fe/H]1 (3)
52- 56 F5.2 Sun [Fe/H]2 ? Abundance taken from the literature (2)
58 I1 --- r_[Fe/H]2 ? [1/9] Reference for [Fe/H]2 (3)
60- 64 F5.2 Sun [Fe/H]3 ? Abundance taken from the literature (2)
66 I1 --- r_[Fe/H]3 ? [1/9] Reference for [Fe/H]3 (3)
68- 72 F5.2 Sun [Fe/H]4 ? Abundance taken from the literature (2)
74- 75 I2 --- r_[Fe/H]4 ? [1/10] Reference for [Fe/H]4 (3)
77- 81 F5.2 Sun [Fe/H]5 ? Abundance taken from the literature (2)
83- 84 I2 --- r_[Fe/H]5 ? [1/10] Reference for [Fe/H]5 (3)
86- 90 F5.2 Sun [Fe/H]6 ? Abundance taken from the literature (2)
92 I1 --- r_[Fe/H]6 ? [1/9] Reference for [Fe/H]6 (3)
94- 97 I4 km/s Vsys Systemic velocity calculated in this work
99-100 I2 km/s e_Vsys rms uncertainty on Vsys
102-105 I4 km/s Vsys1 ? Systemic velocity taken from the literature
107-108 I2 km/s e_Vsys1 ? rms uncertainty on Vsys1
110-111 I2 --- r_Vsys1 ? [1/21] Reference for Vsys1 (4)
113-116 I4 km/s Vsys2 ? Systemic velocity taken from the literature
118-119 I2 km/s e_Vsys2 ? rms uncertainty on Vsys2
121-122 I2 --- r_Vsys2 ? [1/21] Reference for Vsys2 (4)
124-127 I4 km/s Vsys3 ? Systemic velocity taken from the literature
129-130 I2 km/s e_Vsys3 ? rms uncertainty on Vsys3
132-133 I2 --- r_Vsys3 ? [1/21] Reference for Vsys3 (4)
135-136 I2 km/s Vsys4 ? Systemic velocity taken from the literature
138 I1 km/s e_Vsys4 ? rms uncertainty on Vsys4
140-141 I2 --- r_Vsys4 ? [1/21] Reference for Vsys1 (4)
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Note (1): *: See Section 5 for a discussion of this star for which the
classification as an RR Lyrae is uncertain
&: only one observation of this star was made; hence the larger
errors. Based on the large amplitude shown in the GCVS it
is assumed to be an 'ab' type
c: c-type, blank indicates ab-type
Note (2): {DELTA}S values from previous work have been transformed to [Fe/H]
using [Fe/H] = -0.13-0.195{DELTA}S (Fernley & Barnes 1996).
As discussed in the text, the uncertainty in the [Fe/H] values,
both from previous work and this work, is typically ±0.13 dex.
Note (3): Sources of abundances:
1: Butler (1975ApJ...200...68B 1975ApJ...200...68B)
2: Kemper (1982AJ.....87.1395K 1982AJ.....87.1395K)
3: Preston (1959ApJ...130..507P 1959ApJ...130..507P)
4: Clementini et al. (1991AJ....101.2168C 1991AJ....101.2168C)
5: Kinman & Caretta (1992PASP..104..111K 1992PASP..104..111K)
6: Smith (1990PASP..102..124S 1990PASP..102..124S)
7: Suntzeff et al. (1991ApJ...367..528S 1991ApJ...367..528S)
8: Layden (1994AJ....108.1016L 1994AJ....108.1016L), Cat. J/AJ/108/1016
9: Lambert et al. (1996ApJS..103..183L 1996ApJS..103..183L)
10: Clementini et al. (1995AJ....110.2319C 1995AJ....110.2319C), Cat. J/AJ/110/2319
Note (4): Sources of mean radial velocities:
1: Liu & Janes (1990ApJ...354..273L 1990ApJ...354..273L)
2: Jones et al. (1988ApJ...332..206J 1988ApJ...332..206J)
3: Hawley & Barnes (1985PASP...97..551H 1985PASP...97..551H)
4: Woolley & Ali (1966RGOB..114....1W 1966RGOB..114....1W)
5: Farquhar (1948ApJ...107..276F 1948ApJ...107..276F)
6: Rogers (1960Obs....80..220R 1960Obs....80..220R)
7: Varsavsky (1960ApJ...131..623V 1960ApJ...131..623V)
8: Cacciari et al. (1987A&AS...69..135C 1987A&AS...69..135C)
9: Burki & Meylan (1986A&A...156..131B 1986A&A...156..131B)
10: Barnes et al. (1988ApJS...67..403B 1988ApJS...67..403B)
11: Layden (1994AJ....108.1016L 1994AJ....108.1016L), Cat J/AJ/108/1016
12: Imbert (1980A&A....86..259I 1980A&A....86..259I)
13: Preston et al. (1961ApJ...133..484P 1961ApJ...133..484P)
14: Saha & White (1990PASP..102..148S 1990PASP..102..148S)
15: Payne-Gaposhkin (1954AnHar.113....3P 1954AnHar.113....3P)
16: Woolley and Savage (1971RGOB..170....1W 1971RGOB..170....1W)
17: Joy (1938PASP...50..302J 1938PASP...50..302J)
18: Joy (1950PASP...62...60J 1950PASP...62...60J)
19: Joy (1955PASP...67..420J 1955PASP...67..420J)
20: Preston (1959ApJ...130..507P 1959ApJ...130..507P)
21: Notni 1956, mitt. Jena No. 26
Note (5): Position added to the original table (taken from SIMBAD)
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Acknowledgements: Enrique Solano
(End) Patricia Bauer [CDS] 18-Feb-1997