III/271 Spectral Classes in Kapteyn areas 68-91 (Chargeishvili+, 2000)
Catalogue of Spectral and Luminosity classes of 3914 stars in Kapteyn
areas 68-91.
Chargeishvili K.B., Bartaya R.A., Kharadze E.K.
<Bull. Abastumani Astrophys. Observ. 75 (2000)>
=2000AbaOB..75...93C 2000AbaOB..75...93C
=2013yCat.3271....0C 2013yCat.3271....0C
ADC_Keywords: Selected areas ; Spectral types
Description:
The present catalogue is the third one of the four catalogues
published according to programme of Abastumani Astrophysical
Observatory of a massive two-dimensional MK classification of stars in
115 kapteyn Select Areas (KA) of Northen Sky (Bartaya, 1983, Cat.
III/112; Bartaya, Kharadze, 1992, Cat. III/270).
The catalogue lists the spectral types and luminosity classes for 3914
stars in 24 Kapteyn areas 68-91 through the declination circle of
0°.
The catalogue is compiled on the basis of the spectral data obtained
with the 70-cm meniscus telescope of Abastumani Astrophysical
Observatory using the 8° objective prism (dispersion 166Å/mm
near Hγ; in the short-wave region, the spectrum extends up to
3500Å). The field of the meniscus telescope is 4.5°x 4.5°.
The photo material is taken on Kodak IIa-O, hyper-sensitized Kodak
IIIa-J and in order to detect also Hα emission stars and M, S, C
type stars in the surveyed KA's, hyper-sensitized Kodak IIIa-F plates
were also taken.
A limiting apparent magnitude in V for stars in question is 12.5
photographic mag. and for M ones - 15.0 mag.
The data for all KA's are uniform not only in the sense of
classification accuracy (the whole classification is done by one
person - the author of the present catalogue), but also in the sense
of penetration.
The errors of our determinations are: ±0.6 for spectral subtype and
±0.5 for luminosity class.
The stars in the KA's are arranged in the Catalogue by increasing
right ascension. The stars are numbered according to zones of 1°
in declination. The printed catalogue is provided with suitable
stellar charts for separate KA's reproduced from the Lick Catalogue.
The reference system on the charts refers to 1950 epoch and it is
plotted according to the Smithsonian Astrophysical Observatory (SAO)
catalogue.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 84 3914 The catalogue of spectral classes
--------------------------------------------------------------------------------
See also:
III/112 : Spectral Classes in Kapteyn areas 2-43 (Bartaya, 1983)
III/270 : Spectral Classes in Kapteyn areas 44-67 (Bartaya+, 1992)
III/275 : Spectral Classes in Kapteyn areas 92-115 (Kharadze+, 2003)
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- SA *[68/91] Selected Area number
4- 9 A6 --- ID *Star Designation in SA
12- 20 A9 --- BD Designation on BD catalog
21- 26 I6 --- HD [1,225300]? Designation in HD (Cat. III/135)
29- 30 I2 h RAh ? Right Ascension 1950 (hours) from SAO
32- 33 I2 min RAm ? Right Ascension 1950 (minutes) from SAO
35- 38 F4.1 s RAs ? Right Ascension 1950 (seconds) from SAO
40 A1 --- DE- Declination 1950 (sign)
42- 43 I2 deg DEd ? Declination 1950 (degrees) from SAO
45- 46 I2 arcmin DEm ? Declination 1950 (minutes) from SAO
48- 49 I2 arcsec DEs ? Declination 1950 (seconds) from SAO
52- 56 F5.2 mag Pmag ? Photographic magnitude
57 A1 --- u_Pmag [!] Uncertainty flag
58 A1 --- n_Pmag [V] Variability flag
60- 70 A11 --- SpType *Spectral classification
71 A1 --- u_SpType Uncertainty flag on SpType
74- 77 I4 --- BSD *? Bergedorfer Spektral Durchmusterung
79- 84 I6 --- SAO [1,258997]? SAO (Cat. I/131) designation
--------------------------------------------------------------------------------
Note on SA, ID:
Each star is designated by 3 numbers separated by a blank "K D N", where:
K = Kaptyen area number (the "SA" number, between 68 and 91)
D = Declination zone (degrees)
N = Running number within the zone
Note on SpType:
the spectrum is formatted in the byte locations:
0 = (byte 60) : luminosity prefix (d g c) if any;
1 = (byte 61) : spectral temperature class
2 = (byte 62) : spectral temperature subclass
3 = (byte 63) : peculiarity
4 = (bytes 64-66) : luminosity class
7 = (byte 67) : '-' if luminosity class is uncertain
8 = (byte 68) : '+' is spectrum is double
9 = (byte 69) : secondary spectrum, if existing
Note on BSD:
The Bergedorfer Spektral Durchmusterung (BSD) was prepared by
Schwassmann A. and van Rhijn P.J., and published by the Hamburger
Sternwarte in Bergedorf between 1935 and 1953 in 5 volumes. Note that
only the second part of the BSD designation is stored in this column:
the Kapteyn Area number (the "SA" number) must be added in front of
the contents of this column to generate the complete BSD designation.
--------------------------------------------------------------------------------
Acknowledgements:
Ketevan Chargeishvili, ketevan.chargeishvili(at)iliauni.edu.ge
(End) Ketevan Chargeishvili [AbAO, Goegia], Patricia Vannier [CDS] 20-Nov-2013