Catalogue of Stellar Spectra Classified in the Morgan-Keenan System
Jaschek C., Conde H., de Sierra, A.C.
<Publ. La Plata Obs., Ser. Astron. 28, No. 2 (1964)>
Description:
The purpose of this catalog is to provide bibliographic references to spectral classifications of stars in the Morgan-Keenan system published in the literature prior to January 1963. The catalog includes, with few exceptions, only objects contained in the Durchmusterungen: BD, SD, CD, and CPD. Objects belonging to stellar clusters and extragalactic nebulae were excluded from the catalog if they are not listed in the Durchmusterungen. The catalog includes sequential numbers, HD and DM numbers, right ascension and declination (B1900.0), magnitudes, spectral classifications, and bibliographic references. This machine-readable version was modified and corrected with errata at the Astronomical Data Center/Goddard Space Flight Center, NASA/Goddard Space Flight Center.
File Summary:
| FileName | Lrecl | Size | Records | Explanations |
| ReadMe | 80 | 5KB | This file | |
| mkclass.txt | 80 | 2KB | 72 | *The original ADC document |
| changes.txt | 80 | 14KB | 218 | Changes made by ADC |
| mkclass.dat | 125 | 442KB | 20849 | Catalog Data |
Note on mkclass.txt:
The file summary, format description, and changes have been removed as they are included in either the ReadMe or changes.txt
Byte-by-byte Description of file: mkclass.dat
| Bytes | Format | Units | Label | Explanations |
| 1-2 | I2 | count | *Counter within a group of records | |
| 4-9 | I6 | HD | ?HD number | |
| 10-14 | A5 | n_HD | Additional designation or alternate number | |
| 15-16 | A2 | DM_cat | DM catalog designation | |
| 17 | A1 | DM_sign | Sign of DM zone | |
| 18-19 | I2 | deg | DM_zone | ?Declination zone |
| 20-24 | I5 | DM_num | ?Number within zone | |
| 25-27 | A3 | n_DM | Additional designation | |
| 28-38 | A11 | name | Alternative name | |
| 39-40 | I2 | h | RAh | Right ascension hours (1900.0) |
| 42-45 | F4.1 | min | RAm | Right ascension minutes (1900.0) |
| 47 | A1 | DE- | Sign of declination | |
| 48-49 | I2 | deg | DEd | Declination degrees (1900.0) |
| 51-52 | I2 | arcmin | DEm | Declination minutes (1900.0) |
| 54-57 | F4.1 | mag | mag | *?Magnitude (accuracy is uncertain) |
| 59-77 | A19 | Sp | *Spectral type | |
| 79-102 | A24 | note | *References and notes | |
| 103 | A1 | com | [* ] Asterisk indicates corrected value | |
| 104-111 | F8.4 | rad | RAr | Right ascension in radians |
| 112-119 | F8.4 | rad | DEr | Declination in radians |
| 120-125 | I6 | cnt | *Counter from hard copy catalog |
Note on count:
For any given star there may be as many as 11 records. The first record of such a group gives a spectral classification and references, while subsequent records may be used merely to continue the list of references which gave that classification, or subsequent records are used to give different classifications (and associated references) for the given star.
Note on mag:
For identification purposes only Two stars have non-digits in the magnitude field. GM Per (line 3704) has the magnitude 9.0) HD 38268 (line 5015) has NEB in the magnitude column
Note on Sp:
Peculiar objects are generally included; subdwarfs listed occasionally; N, R, and S stars usually mentioned; white dwarfs omitted.
Note on note:
Each reference is given as a three digit integer followed by a blank. The notes are coded as follows:
V variable
SB spectroscopic binary
VB visual binary
TS triple system
Note on cnt:
A counter which sequentially numbers the entries in the hardcopy. The records in the machine readable version have been reordered by right ascension (1900).
(End) N. G. Roman [ADC/SSDOO] 7-Aug-1997