J/ApJ/652/1585 Bright metal-poor stars from HES survey (Frebel+, 2006)
Bright metal-poor stars from the Hamburg/ESO survey.
I. Selection and follow-up observations from 329 fields.
Frebel A., Christlieb N., Norris J.E., Beers T.C., Bessell M.S., Rhee J.,
Fechner C., Marsteller B., Rossi S., Thom C., Wisotzki L., Reimers D.
<Astrophys. J., 652, 1585-1603 (2006)>
=2006ApJ...652.1585F 2006ApJ...652.1585F
ADC_Keywords: Stars, carbon ; Abundances ; Radial velocities ;
Stars, metal-deficient
Keywords: catalogs - Galaxy: abundances - Galaxy: halo -
Galaxy: stellar content - stars: abundances - stars: carbon -
stars: Population II - techniques: spectroscopic
Abstract:
We present a sample of 1777 bright (9<B<14) metal-poor candidates
selected from the Hamburg/ESO Survey (HES). Despite saturation effects
present in the red portion of the HES objective-prism spectra, the
data were recoverable and quantitative selection criteria could be
applied to select the sample. Analyses of medium-resolution (∼2Å)
follow-up spectroscopy of the entire sample, obtained with several 24m
class telescopes, yielded 145 new metal-poor stars with metallicity
[Fe/H]←2.0, of which 79 have [Fe/H]←2.5 and 17 have [Fe/H]←3.0. We
also obtained C/Fe estimates for all of these stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table11.dat 110 286 The 286 bright metal-poor stars with [Fe/H]<-1.0
table12.dat 115 1491 "Non-metal-poor" objects
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See also:
J/A+A/375/366 : Carbon stars from the Hamburg/ESO survey (Christlieb+, 2001)
J/A+A/431/143 : Field horizontal-branch stars in the Galaxy (Christlieb+ 2005)
J/A+A/484/721 : HES survey. IV. Candidate metal-poor stars (Christlieb+, 2008)
Byte-by-byte Description of file: table11.dat table12.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HE]
4- 12 A9 --- HE HE star name (HHMM-DDMM, from B1950 position)
13 A1 --- m_HE [AB] Multiplicity index on HE name
14 A1 --- n_HE [bf] Multiple measurements (1)
16- 17 I2 h RAh Hour of Right Ascension (J2000)
19- 20 I2 min RAm Minute of Right Ascension (J2000)
22- 25 F4.1 s RAs Second of Right Ascension (J2000)
27 A1 --- DE- Sign of the Declination (J2000)
28- 29 I2 deg DEd Degree of Declination (J2000)
31- 32 I2 arcmin DEm Arcminute of Declination (J2000)
34- 35 I2 arcsec DEs Arcsecond of Declination (J2000)
37- 40 F4.1 mag Bmag ? HES derived B band magnitude
42- 45 F4.2 mag (B-V)HP2 ? HP2 index derived (B-V) color index
47- 50 F4.2 mag (B-V)J-K ? (J-K)0 derived (B-V) color index
52- 55 F4.2 mag E(B-V) E(B-V) reddening
57- 61 I5 km/s HRV Heliocentric radial velocity
63- 67 F5.2 0.1nm KP ? KP (CaII) index value
69- 73 F5.2 0.1nm HP2 ? HP2 (Hδ) index value
75- 78 F4.2 0.1nm GP ? GP (G-band) index value
80- 84 F5.2 [Sun] [Fe/H]B-V ? (B-V) derived [Fe/H] abundance (2)
86- 90 F5.2 [Sun] [Fe/H]HP2 ? HP2 index derived [Fe/H] abundance (2)
92- 96 F5.2 [Sun] [Fe/H]Ros ? Rossi et al. (2005, Cat. J/AJ/130/2804)
calibration derived [Fe/H] abundance (2)
98-102 F5.2 [Sun] [Fe/H] ? Weighted and averaged [Fe/H] abundance (2)
104-108 F5.2 [Sun] [C/Fe] ? [C/Fe] abundance (2)
110 A1 --- R [*] Rediscovered flag (3)
112-115 A4 --- Com Spectral peculiarities (4)
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Note (1): For 5 sources, HE 0240-0009, HE 0318-2642, HE 0409-1212,
HE 0527-3931 and HE 0437-1331, there are two set of measurements,
identified by f and b after the source name.
Note (2): Parameters in table11.dat only.
Note (3): * = star has been rediscovered as metal-poor star with [Fe/H]←2.0
Note (4): Comment as follows:
HB = horizontal branch
He = He lines in the spectrum
em = emission lines in the spectrum
pec = peculiar
dist = distorted Ca K line
comp = possibly composited spectrum of two objects
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History:
* 23-Oct-2008: From electronic version of the journal
* 16-Jan-2009: HE 0241-0205 corrected into HE 0241+0205 in table11.dat
HE 0414-0157 corrected into HE 0414+0157 in table12.dat
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 29-Jul-2008