J/AJ/140/1694 Abundances of non-variable red and blue HB stars (For+, 2010)
The chemical compositions of non-variable red and blue field horizontal branch
stars.
For B.-Q., Sneden C.
<Astron. J., 140, 1694-1718 (2010)>
=2010AJ....140.1694F 2010AJ....140.1694F
ADC_Keywords: Stars, horizontal branch ; Abundances ; Equivalent widths
Keywords: stars: abundances - stars: horizontal-branch
Abstract:
We present a new detailed abundance study of field red horizontal
branch (RHB) and blue horizontal branch (BHB) non-variable stars. High
resolution and high signal-to-noise ratio echelle spectra of 11 RHB
and 12 BHB were obtained with the McDonald 2.7m telescope, and the
RHB sample was augmented by reanalysis of spectra of 25 stars from a
recent survey. We derived stellar atmospheric parameters based on
spectroscopic constraints and computed relative abundance ratios for
24 species of 19 elements.
Description:
The observations were made with the McDonald 2.7m Smith telescope,
using the Tull "2dcoude" cross-dispersed echelle spectrograph. Optimall
spectral coverage was obtained for observing run in 2009.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 97 48 Program stars
table3.dat 44 21504 Equivalent width measurements of program stars
table4.dat 66 48 Input stellar atmosphere parameters and
derived Fe metallicities
table5.dat 96 48 Abundance ratios of Na, Mg, Si, and Ca
table6.dat 95 48 Abundance ratios of Al, Ti, Sc, and Cr
table7.dat 92 48 Abundance ratios of Fe-peak elements:
V, Mn, Co, Ni, and Zn
table8.dat 92 48 Abundance ratios of neutron-capture elements:
Sr, Y, Zr, Ba, La, and Eu
table10.dat 43 92 Sensitivity of [X/Fe] with stellar parameters
table11.dat 31 91 Sensitivity of [X/Fe] with stellar parameters
for BHB star
table13.dat 38 48 Estimated HB masses and parameters used
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type: RHB (red) or BHB (blue) horizontal branch
5- 16 A12 --- Star Star name
18- 19 I2 h RAh Right ascension (J2000)
21- 22 I2 min RAm Right ascension (J2000)
24- 27 F4.1 s RAs Right ascension (J2000)
29 A1 --- DE- Declination sign (J2000)
30- 31 I2 deg DEd Declination (J2000)
33- 34 I2 arcmin DEm Declination (J2000)
36- 39 F4.1 arcsec DEs Declination (J2000)
41- 46 F6.3 mag Bmag B magnitude, from Simbad
48- 53 F6.3 mag Vmag V magnitude, from Simbad or Beers et al.
(1992, Cat. J/AJ/103/1987)
55- 60 F6.3 mag Jmag 2MASS J magnitude
62- 67 F6.3 mag Hmag 2MASS H magnitude
69- 74 F6.3 mag Ksmag ?=- 2MASS Ks magnitude
76- 79 F4.2 mag B-V B-V colour index
81- 85 F5.3 mag V-K V-K colour index
87- 91 F5.3 mag E(B-V) ?=- Redenning, from NED
93- 97 F5.3 mag cE(B-V) ?=- Corrected redenning, cE(B-V)=0.9E(B-V)-0.01
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- Star Star name
14- 20 F7.2 0.1nm lambda Wavelength λ in Angstroms
22- 26 A5 --- Ion Species identification
28- 32 F5.3 eV EP Excitation potential
34- 38 F5.2 [-] log(gf) Log of the oscillator strength
40 I1 --- r_log(gf) Reference for log(gf) (1)
42- 44 I3 10-13m EW ? Equivalent width in milli-Angstroms
--------------------------------------------------------------------------------
Note (1): References as follows:
1 = NIST
2 = Barbuy et al. (2007AJ....134.1613B 2007AJ....134.1613B)
3 = Smith & Raggett (1981JPhB...14.4015S 1981JPhB...14.4015S)
4 = Pickering et al. (2002A&A...396..715P 2002A&A...396..715P)
5 = Sobeck et al. (2007, Cat. J/ApJ/667/1267)
6 = Melendez & Barbuy (2009A&A...497..611M 2009A&A...497..611M)
7 = Nitz et al. (1999ApJS..122..557N 1999ApJS..122..557N)
8 = Hannaford et al. (1982ApJ...261..736H 1982ApJ...261..736H)
9 = Clementini et al. (1995, Cat. J/AJ/110/2319)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type (RHB or BHB)
5- 16 A12 --- Star Star name
18- 21 I4 K Teff Effective temperature
23- 26 F4.2 [cm/s2] loggi Input surface gravity
28- 32 F5.2 [-] [M/H] Input model metallicity
34- 37 F4.2 km/s vt Microturbulent velocity
39- 43 F5.2 [-] [FeI/H] Abundance [FeI/H]
45- 48 F4.2 [-] e_[FeI/H] rms uncertainty on [FeI/H]
50- 52 I3 --- o_[FeI/H] Number of lines for [FeI/H]
54- 58 F5.2 [-] [FeII/H] Abundance [FeII/H]
60- 63 F4.2 [-] e_[FeII/H] rms uncertainty on [FeII/H]
65- 66 I2 --- o_[FeII/H] Number of lines for [FeII/H]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type (RHB or BHB)
5- 16 A12 --- Star Star name
18- 22 F5.2 [-] [NaI/Fe] ?=- Abundance [NaI/Fe]
23 A1 --- n_[NaI/Fe] [a] a for NLTE correction
25- 28 F4.2 [-] e_[NaI/Fe] ?=- rms uncertainty on [NaI/Fe]
30 I1 --- o_[NaI/Fe] ?=- Number of lines for [NaI/Fe]
32- 36 F5.2 [-] [MgI/Fe] Abundance [MgI /Fe]
38- 41 F4.2 [-] e_[MgI/Fe] ?=- rms uncertainty on [MgI/Fe]
43 I1 --- o_[MgI/Fe] ?=- Number of lines for [MgI/Fe]
45- 49 F5.2 [-] [SiI/Fe] ?=- Abundance [SiI/Fe]
50 A1 --- n_[SiI/Fe] [a] a for NLTE correction
52- 55 F4.2 [-] e_[SiI/Fe] ?=- rms uncertainty on [SiI/Fe]
57 I1 --- o_[SiI/Fe] ?=- Number of lines for [SiI/Fe]
59- 62 F4.2 [-] [SiII/Fe] ?=- Abundance [SiII/Fe]
63 A1 --- n_[SiII/Fe] [a] a for NLTE correction
65- 68 F4.2 [-] e_[SiII/Fe] ?=- rms uncertainty on [SiII/Fe]
70 I1 --- o_[SiII/Fe] ?=- Number of lines for [SiII/Fe]
72- 76 F5.2 [-] [CaI/Fe] Abundance [CaI/Fe]
78- 81 F4.2 [-] e_[CaI/Fe] ?=- rms uncertainty on [CaI/Fe]
83- 84 I2 --- o_[CaI/Fe] ?=- Number of lines for [CaI/Fe]
86- 90 F5.2 [-] [CaII/Fe] ?=- Abundance [CaII/Fe]
92- 95 F4.2 [-] e_[CaII/Fe] ?=- rms uncertainty on [CaII/Fe]
96 I1 --- o_[CaII/Fe] ?=- Number of lines for [CaII/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type (RHB or BHB)
5- 16 A12 --- Star Star name
18- 22 F5.2 [-] [AlI/Fe] ?=- Abundance [AlI/Fe]
23 A1 --- n_[AlI/Fe] [a] a for NLTE correction
25- 28 F4.2 [-] e_[AlI/Fe] ?=- rms uncertainty on [AlI/Fe]
30 I1 --- o_[AlI/Fe] ?=- Number of lines for [AlI/Fe]
32- 35 F4.2 [-] [TiI/Fe] ?=- Abundance [TiI/Fe]
37- 40 F4.2 [-] e_[TiI/Fe] ?=- rms uncertainty on [TiI /Fe]
42- 43 I2 --- o_[TiI/Fe] ?=- Number of lines for [TiI/Fe]
45- 48 F4.2 [-] [TiII/Fe] ?=- Abundance [TiII/Fe]
50- 53 F4.2 [-] e_[TiII/Fe] ?=- rms uncertainty on [TiII/Fe]
55- 56 I2 --- o_[TiII/Fe] ?=- Number of lines for [TiII/Fe]
58- 62 F5.2 [-] [ScII/Fe] ?=- Abundance [ScII/Fe]
64- 67 F4.2 [-] e_[ScII/Fe] ?=- rms uncertainty on [ScII/Fe]
69 I1 --- o_[ScII/Fe] ?=- Number of lines for [ScII/Fe]
71- 75 F5.2 [-] [CrI/Fe] ?=- Abundance [CrI/Fe]
77- 80 F4.2 [-] e_[CrI/Fe] ?=- rms uncertainty on [CrI/Fe]
82 I1 --- o_[CrI/Fe] ?=- Number of lines for [CrI/Fe]
84- 88 F5.2 [-] [CrII/Fe] ?=- Abundance [CrII/Fe]
90- 93 F4.2 [-] e_[CrII/Fe] ?=- rms uncertainty on [CrII/Fe]
95 I1 --- o_[CrII/Fe] ?=- Number of lines for [CrII/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type (RHB or BHB)
5- 16 A12 --- Star Star name
18- 22 F5.2 [-] [VII/Fe] ?=- Abundance [VII/Fe]
24- 27 F4.2 [-] e_[VII/Fe] ?=- rms uncertainty on [VII/Fe]
29 I1 --- o_[VII/Fe] ?=- Number of lines for [VII/Fe]
31- 35 F5.2 [-] [MnI/Fe] ?=- Abundance [MnI/Fe]
37- 40 F4.2 [-] e_[MnI/Fe] ?=- rms uncertainty on [MnI /Fe]
42 I1 --- o_[MnI/Fe] ?=- Number of lines for [MnI/Fe]
44- 48 F5.2 [-] [CoI/Fe] ?=- Abundance [CoI/Fe]
50- 53 F4.2 [-] e_[CoI/Fe] ?=- rms uncertainty on [CoI/Fe]
55 I1 --- o_[CoI/Fe] ?=- Number of lines for [CoI/Fe]
57- 61 F5.2 [-] [NiI/Fe] ?=- Abundance [NiI/Fe]
63- 66 F4.2 [-] e_[NiI/Fe] ?=- rms uncertainty on [NiI/Fe]
68 I1 --- o_[NiI/Fe] ?=- Number of lines for [NiI/Fe]
70- 74 F5.2 [-] [NiII/Fe] ?=- Abundance [NiII/Fe]
75- 78 F4.2 [-] e_[NiII/Fe] ?=- rms uncertainty on [NiII/Fe]
80 I1 --- o_[NiII/Fe] ?=- Number of lines for [NiII/Fe]
82- 85 F4.2 [-] [ZnI/Fe] ?=- Abundance [ZnI/Fe]
87- 90 F4.2 [-] e_[ZnI/Fe] ?=- rms uncertainty on [ZnI/Fe]
92 I1 --- o_[ZnI/Fe] ?=- Number of lines for [ZnI/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type (RHB or BHB)
5- 16 A12 --- Star Star name
18- 22 F5.2 [-] [SrII/Fe] ?=- Abundance [SrII/Fe]
24- 27 F4.2 [-] e_[SrII/Fe] ?=- rms uncertainty on [SrII/Fe]
29 I1 --- o_[SrII/Fe] ?=- Number of lines for [SrII/Fe]
31- 35 F5.2 [-] [YII/Fe] ?=- Abundance [YII/Fe]
37- 40 F4.2 [-] e_[YII/Fe] ?=- rms uncertainty on [YII /Fe]
42 I1 --- o_[YII/Fe] ?=- Number of lines for [YII/Fe]
44- 47 F4.2 [-] [ZrII/Fe] ?=- Abundance [ZrII/Fe]
49- 52 F4.2 [-] e_[ZrII/Fe] ?=- rms uncertainty on [ZrII/Fe]
54 I1 --- o_[ZrII/Fe] ?=- Number of lines for [ZrII/Fe]
56- 60 F5.2 [-] [BaII/Fe] ?=- Abundance [BaII/Fe]
62- 65 F4.2 [-] e_[BaII/Fe] ?=- rms uncertainty on [BaII/Fe]
67 I1 --- o_[BaII/Fe] ?=- Number of lines for [BaII/Fe]
69- 73 F5.2 [-] [LaII/Fe] ?=- Abundance [BaII/Fe]
75- 78 F4.2 [-] e_[LaII/Fe] ?=- rms uncertainty on [LaII/Fe]
80 I1 --- o_[LaII/Fe] ?=- Number of lines for [LaII/Fe]
82- 85 F4.2 [-] [EuII/Fe] ?=- Abundance [EuII/Fe]
87- 90 F4.2 [-] e_[EuII/Fe] ?=- rms uncertainty on [EuII/Fe]
92 I1 --- o_[EuII/Fe] ?=- Number of lines for [EuII/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Param Stellar parameter and units
21- 25 A5 --- Ion Species identification
27- 31 F5.2 [-] Abund1 ? Variation Δ[Ion/Fe] for CS 22898-043
33- 37 F5.2 [-] Abund2 ? Variation Δ[Ion/Fe] for HD 25532
39- 43 F5.2 [-] Abund3 ? Variation Δ[Ion/Fe] for BD+18 2890
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table11.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Param Stellar parameter and variation
21- 25 A5 --- Ion Species identification
27- 31 F5.2 [-] Abund ? Variation Δ[Ion/Fe] for HD 93329
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table13.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 -- Type Type (RHB or BHB)
5- 16 A12 --- Star Star name
18- 21 I4 K Teff Effective spectroscopic temperature
23- 26 F4.2 [cm/s2] logg Surface gravity
27 A1 --- n_logg [ab] a (photometric) or b (spectroscopic) logg
29- 33 F5.2 [-] [Fe/H] Metallicity
35- 38 F4.2 Msun Mass Mass
--------------------------------------------------------------------------------
History:
* 11-Jul-2012: From electronic version of the journal
* 28-Aug-2012: table3, the name "BD+15 2602" was replaced by "BD+25 2602"
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jul-2012