J/ApJS/53/791 Spectroscopy of AB stars in halo (Pier, 1983)
AB stars in the southern galactic halo. II.
Spectroscopy and radial velocities
Pier J.R.
<Astrophys. J. Suppl. Ser. 53, 791 (1983)>
=1983ApJS...53..791P 1983ApJS...53..791P
ADC_Keywords: Equivalent widths ; Radial velocities ; Stars, halo
Keywords: galaxies: Milky Way - galaxies: structure - interstellar: matter -
radial velocities - stars: high-velocity - stars: horizontal branch -
stars: RR Lyrae
Abstract:
Reticon spectroscopy has been obtained for 224 high-latitude AB stars
chosen from the Curtis Schmidt objective-prism survey of Preston and
Schectamn. Additional spectra of radial velocity standards, globular
cluster blue horizontal-branch and RR Lyrae stars, and Population I
late B and early A stars have been obtained.
Radial velocities have been determined for all the program objects
by cross-correlating the spectra with those of radial velocities
standards. The standard error in a single observation is 11km/s.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 48 17 AB stars not in paper I
table2.dat 42 283 Spectroscopic measurements
table3.dat 23 35 Interstellar K lines
table5.dat 48 19 Comparisons with Rodgers (1971ApJ...165..581R 1971ApJ...165..581R)
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See also:
J/AJ/87/1515 : UBV photometry of AB stars in halo (Pier, 1982)
J/AJ/90/2089 : Stars of very low metal abundance. (Beers+, 1985)
J/PASP/102/1392 : UBV photometry from HK survey. (Doinidis+ 1990)
J/PASP/103/973 : Photoelectric UBV from HK survey. (Doidinis+ 1991)
J/ApJS/76/1001 : UBV photometry of HK survey stars (Preston+, 1991)
J/AJ/103/267 : Spectrocopy of hot stars in galactic halo (Beers+ 1992)
J/AJ/103/1987 : Stars of very low metal abundance (Beers+ 1992)
J/AJ/108/268 : HK survey emission-line candidates positions (Beers+ 1994)
J/AJ/108/538 : Metal-poor MS stars UBV photometry (Preston+ 1994)
J/AJ/112/1188 : HK survey emission-line candidates (Beers+ 1996)
J/AJ/117/2329 : Spectroscopy of hot stars in the halo. (Wilhelm+, 1999)
J/ApJS/123/639 : UBV photometry of metal-weak candidates (Norris+, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [CS]
4- 11 A8 --- BPS-CS Curtis Schmidt survey star name
14- 15 I2 h RAh Right ascension 1950
17- 18 I2 min RAm Right ascension 1950
20- 21 I2 s RAs Right ascension 1950
23 A1 --- DE- Declination sign
24- 25 I2 deg DEd Declination 1950
27- 30 F4.1 arcmin DEm Declination 1950
32- 36 F5.1 deg GLON Galactic longitude
38- 42 F5.1 deg GLAT Galacitic latitude
44- 48 A5 --- Class Preston's spectral and brightness Class
(b=bright, f=faint, m=medium)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1 A1 --- n_Star [d] Note on observations (1)
2- 14 A13 --- Star Star name (5)
15- 16 I2 --- Nsp Number of spectroscopic observations
18- 21 I4 km/s HVel ? Heliocentric velocity
25- 26 I2 km/s e_HVel ? rms uncertainty on HVel
27 A1 --- n_HVel [be] Notes on radial velocity (2)
29- 31 F3.1 0.1nm EW(K) ? K line equivalent width
32 A1 --- n_EW(K) [a] Note on K line (3)
34- 36 F3.1 0.1nm e_EW(K) ? rms uncertainty on W(K)
37 A1 --- f_EW(K) [c] Note on e_EW(K) (4)
38- 39 I2 0.1nm EW(Hdel) Hdelta line equivalent width
41 I1 0.1nm e_EW(Hdel) ? rms uncertainty on Hdelta
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Note (1): Phases at mid-observation for variables in NGC 6121:
V1 : 0.57 V6 0.68 V20 0.47 V23 0.40
V30 : 0.65 V37 0.55 V42 0.46 V43 0.51
Note (2): b: The radial velocity determinations are not independent.
e: Adopted radial velocities for template stars.
Note (3): a: K line too small to measure.
Note (4): c: Only one K line measurement obtained.
Note (5): lists of names used:
CS = Curtis Schmidt, see table1 or Paper I, J/AJ/87/1515
PS = Philip and Sanduleak, 1968BOTT....4..253P 1968BOTT....4..253P
NGC 6121: Lee (1977A&AS...27..367L 1977A&AS...27..367L), variables by Sawyer-Hogg (PDDO 3, N.6)
NGC 6383: Eggen, ROB Ser. E, 27, 61
NGC 6397: Eggen, ROB Ser. E, 43
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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2- 3 A2 --- --- [CS]
5- 13 A9 --- BPS-CS Star name
16- 19 F4.2 0.1nm EW(K) Interstellar K line equivalent width
21- 23 I3 km/s Vel Velocity of the K line
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [CS]
4- 11 A8 --- BPS-CS Curtis Schmidt survey star name
14- 15 I2 --- PS Preston and Schectamn star number
18 A1 --- l_EW(K)R Limit flag on EW(K)R
19- 22 F4.2 0.1nm EW(K)R K line equivalent width from Rodgers
(1971ApJ...165..581R 1971ApJ...165..581R)
25- 27 F3.1 0.1nm EW(K)P K line equivalent width from this work
30- 33 F4.1 0.1nm EW(Hdel)R Hdelta equivalent width from Rodgers
(1971ApJ...165..581R 1971ApJ...165..581R)
36- 37 I2 0.1nm EW(Hdel)P Hdelta equivalent width from this work
39- 42 I4 km/s VelR ? Velocity from Rodgers (1971ApJ...165..581R 1971ApJ...165..581R)
45- 48 I4 km/s VelP Velocity from this work
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Table 4: Weak metallic lines
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Element Wavelength (Å)
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Fe I 4005.3
Ti II 4012.5
Fe I 4045.8
Fe I 4063.6
Sr II 4077.7
Sr II 4215.5
Ca I 4226.7
Fe II 4233.2
Fe I 4271.8
Ti II 4290.2
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References:
Pier J.R. 1982AJ.....87.1515P 1982AJ.....87.1515P (Paper I)
Preston G.W. and Schectamn S.A. 1980, in Annual Report of the Director,
Hale Observatories (Washington, DC: Carnegie Institution), p. 611
Rodgers A.W., 1971ApJ...165..581R 1971ApJ...165..581R
Historical Notes: Keypunched at CDS
(End) James Marcout, Patricia Bauer [CDS] 01-Mar-1995