III/68 List of Early-Type Chemically Peculiar Stars (Egret+ 1981)
A List of Early-Type Chemically Peculiar Stars
Egret D. and Jaschek M.
<Comptes Rendus Symp. Liege No. 23, p. 495 (1981)>
ADC_Keywords: Stars, early-type ; Abundances, peculiar ; Stars, peculiar
Description:
This catalogue is a subset of the "CATALOGUE OF STELLAR GROUPS" (CSG,
Jaschek M. and Egret D., 1981BICDS..20...36J 1981BICDS..20...36J). It provides a list of
identifications, positions, UBV photometry, subgroup and references
for chemically peculiar stars corresponding to the following groups:
Table 1: Helium abnormal stars
Table 2: Ap stars
Table 3: Am stars
A bibliography file is also included.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
helium.dat 109 98 Group 1: Helium abnormal stars
apstars.dat 107 2017 Group 2: Ap stars
amstars.dat 106 1555 Group 3: Am stars
refs.dat 76 34 References
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Byte-by-byte Description of file: helium.dat apstars.dat amstars.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- ID Star identification (HD or DM)
14- 15 I2 h RAh ? Right Ascension (1950) hours
17- 18 I2 min RAm ? Right Ascension (1950) minutes
20- 23 F4.1 s RAs ? Right Ascension (1950) seconds
24 A1 --- u_RAs [*]? Note on RAs accuracy (1)
26 A1 --- DE- Declination (1950) sign
27- 28 I2 deg DEd ? Declination (1950) degrees
30- 31 I2 arcmin DEm ? Declination (1950) arcminutes
33- 34 I2 arcsec DEs ? Declination (1950) arcseconds
36- 41 F6.2 deg Glon ? Galactic Longitude
43- 48 F6.2 deg Glat ? Galactic Latitude
50- 54 F5.2 mag Vmag ? V magnitude
56 A1 --- q_Vmag [ABCD: ] Quality index on V (A=best)
58 A1 --- --- [ (] Parentheses
59- 64 F6.3 mag B-V ? B-V color index
65 A1 --- u_B-V [ )] Uncertainty indicator (Parentheses)
66 A1 --- q_B-V [ABCD: ] Quality index on B-V (A=best)
68- 72 F5.3 mag U-B ? U-B color index
74 A1 --- q_U-B [ABCD ] Quality index on U-B (A=best)
77- 79 A3 --- Sub Indication of subgroup (2)
81- 84 A4 --- uvby Indicates existence of Stroemgren photometry
86- 97 A12 --- CSI CSI Identification: I3, I5, I2
99-109 A11 --- Refs References for assignment of peculiarity group
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Note (1):
* = RA was originally given to 0.1 minute. To homogenize the data
format, RA values were converted to seconds at ADC. RA values
in these records are only accurate to 6 seconds; therefore,
the decimal place is omitted.
blank = RA was originally given to 0.1 second or is omitted.
Note (2):
* The "Helium abnormal stars" are B-type stars having either strong He lines
(subgroup a) or weak He lines (subgroup c). Not included in this list are
He-strong stars of Pop. II (extreme helium stars of Hunger), subdwarfs and
objects like υ Sgr. Stars being known as spectroscopic or
photometric (or both) variables are flagged with a "v".
* The "Ap stars" are B or A type stars with abnormally intensified lines of
different elements. Because of the sometimes conflicting subgroup
assignments, only four subgroups have been retained:
1 = Si and Siλ4200 stars
2 = Hg, Mn and Hg-Mn stars
3 = Si combined with Cr, Eu, Sr, etc. (i.e. SiCr, SiEu, SiSr or SiCrEu)
4 = Cr, Eu, Sr and combinations (i.e. CrEu, Cr, CrEuSr, etc.)
* The "Am stars" are A or early F type stars, in which the Balmer lines,
the CaII lines and the metallic lines do not correspond to a unique
spectral type. No spectral classification of these stars is provided
here. The reader is referred to Curchod and Hauck (1979A&AS...38..449C 1979A&AS...38..449C)
for detailed classifications, when available.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- ref [1/168]+= Reference number
4 A1 --- m_ref Continuation letter
8-76 A69 --- text Text of reference
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History;
* The catalog was originally prepared by the authors (M. Jaschek and
D. Egret) at CDS in July 1981 (file "catalog.txt").
* The catalog was split into different parts (helium, amstars, apstars)
by Julie Anne Watko [SSDOO/ADC] in August 1996
* 03-Mar-2016: references in the 3 data files fixed.
References:
Curchod A. and Hauck B. 1979, Astron. Astrophys. Suppl. Ser., 38, 449.
(1979A&AS...38..449C 1979A&AS...38..449C)
Egret D. and Jaschek M. 1981, Comptes Rendus Symp. Liege No. 23, p. 495.
Jaschek M. 1979, Bull. Inf. CDS, No. 16, 53. (1979BICDS..16...53J 1979BICDS..16...53J)
Jaschek M. and Egret D. 1981, Bull. Inf. CDS, No. 20, 36.
(1981BICDS..20...36J 1981BICDS..20...36J)
(End) Julie Anne Watko [SSDOO/ADC] 21-Aug-1996