ADC/CDS Standard Document for Catalog:/journal_tables/A+A/281/465/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/A+A/281/465 Chemical Composition of alf UMi and V473 Lyr (Andrievsky+ 1994)
================================================================================
The chemical composition of the s-Cepheids. I. Alpha Ursae Minoris (Polaris)
and HR 7308 (V473 Lyr): unique Cepheids of the Galaxy
Andrievsky S.M., Kovtyukh V.V., Usenko I.A.
<Astron. Astrophys. 281, 465 (1994)>
=1994A&A...281..465A
================================================================================
ADC_Keywords: Stars, variable ; Equivalent widths ; Spectroscopy
Keywords: Cepheids - s-Cepheids - chemical composition
Description:
The spectrograms of the s-Cepheids alpha-UMi and HR 7308, taken at
reciprocal dispersion of 9 A/mm with the Main Stellar Spectrograph at
the Special Astrophysical Observatory's 6-m telescope, were analysed
for determining chemical elements abundance. The results include the
equivalent width, and the abundances in the two stars.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 80 9 Observational data
table2.dat 65 30 Residual intensities for hydrogen line profiles
table3.dat 66 33 Chemical composition of Alpha UMi
table4.dat 62 35 Chemical composition of HR7308
annex.dat 34 441 Equivalent widths of lines in the spectra
--------------------------------------------------------------------------------
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
02 31 49.1 +89 15 51 alpha UMi = * 1 UMi = HR 424
19 15 59.5 +27 55 35 HR 7308 = V* V473 Lyr
----------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Star name
13- 23 A11 --- Date Observation date
25- 35 F11.3 d HDJ Julian day
39- 43 F5.3 --- Phase [0,1[ Phase (see n_Phase)
46 I1 --- n_Phase [1,2] Phase calculated according to:
1: Arellano Ferro (1984MNRAS.209..481A)
2: Eggen (1985AJ.....90.1297E)
50- 55 A6 --- Emulsion Photographic emulsion used
57- 65 A9 0.1nm Region Spectral region (min/max wavelength)
69- 70 I2 min Exp Exposure time
74- 75 I2 --- S/N Signal-to-noise ratio
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 F4.1 0.1nm Dlambda Distance from center of line
8- 12 F5.3 --- Hbeta1 Residual intensity for hydrogen line profile
of Alpha UMi
17- 21 F5.3 --- Hgamma1 Residual intensity for hydrogen line profile
of Alpha UMi
26- 30 F5.3 --- Hbeta2a Residual intensity for hydrogen line profile
of HR7308(1990)
35- 39 F5.3 --- Hgamma2a Residual intensity for hydrogen line profile
of HR7308(1990)
45- 49 F5.3 --- Hbeta2b Residual intensity for hydrogen line profile
of HR7308(1990)
53- 57 F5.3 --- Hgamma2b Residual intensity for hydrogen line profile
of HR7308(1992)
61- 65 F5.3 --- Hdelta2b Residual intensity for hydrogen line profile
of HR7308(1992)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Ion Element and ionisation level
8- 10 I3 --- NL Number of lines used for this study
14- 17 F4.2 --- (E/H) Mean abundance relative to logN(H) = 12 (G1)
21- 25 F5.2 [Sun] [E/H] Mean abundance relative to solar value
29- 32 F4.2 [Sun] e_[E/H] ? rms uncertainty on [E/H]
36- 40 F5.2 [Sun] B+L ? [E/H] Result of Boyarchuck & Luybimkov
(1981IzKry..64....3B)
44- 48 F5.2 [Sun] L+B ? [E/H] Luck & Bond (1986PASP...98..442L)
52- 56 F5.2 [Sun] GIR ? [E/H] Giridhar (1985, Proc. Coll. IAU 82, 100)
61- 64 F4.2 [Sun] SR+J ? [E/H] Sanwal, Rautela & Joshi
(1988Ap&SS.140..131S)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Ion Element and ionisation level
8- 10 I3 --- NLa ? Number of lines used for the 1990 value
14- 17 F4.2 --- (E/H)a ? Mean abundance, 1990 value (G1)
21- 25 F5.2 [Sun] [E/H]a ? (E/H) with respect to solar 1990 value,
1990 value
29- 32 F4.2 [Sun] e_[E/H]a ? rms uncertainty on [E/H], 1990 value
35- 37 I3 --- NLb ? Line number used for average 1992 value
41- 44 F4.2 --- (E/H)b ? Mean abundance, average 1992 value (G1)
48- 52 F5.2 [Sun] [E/H]b ? (E/H) with respect to solar, average 1992 value
56- 59 F4.2 [Sun] e_[E/H]b ? rms uncertainty on [E/H], average 1992 value
--------------------------------------------------------------------------------
Byte-by-byte Description of file: annex.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Ion Element and ionisation level
8- 14 F7.2 0.1nm Lambda Wavelength
18- 20 I3 0.1pm EW1 ? Alpha UMi equivalent width
24- 26 I3 0.1pm EW2a ? HR7308(1990) equivalent width
29- 31 I3 0.1pm EW2b ? HR7308(1992) equivalent width
--------------------------------------------------------------------------------
Global Notes:
Note (G1): the mean abundance is relative to logN(H) = 12
In abundances determination the hyper-fine structure was not taken
into account.
================================================================================
(End) Patricia Bauer [CDS] 15-Oct-1993