I/119 Southern Durchmusterung (Schoenfeld+ 1886)
Bonner Sternverzeichniss, vierte Sektion, Schoenfeld E. <Astronomische Beobachtungen auf der Sternwarte der Koeniglichen Rheinischen Friedrich-Wilhelms-Universitat zu Bonn 8, Part IV (Bonn: Adolph Marcus) (1886)> =1886BD....C......0S
ADC_Keywords: Surveys ; Durchmusterungen Description: The Southern Durchmusterung (SD) was computerized at the Centre de Donnees Astronomiques de Strasbourg and at the Astronomical Data Center at the National Space Science Data Center, NASA/Goddard Space Flight Center. Corrigenda listed in the original SD volume and published by Kuestner and Sticker have been incorporated into the machine file. In addition, one star indicated to be "missing" in a published list, and later verified, is flagged so that it can be omitted from computer plotted charts if desired. Stars deleted in the various errata lists have been similarly flagged, while those with revised data are flagged and listed in a separate table. This catalog covers the zones -02 to -23 degrees. Introduction: The Southern Durchmusterung (SD, Schoenfeld 1886, Becker 1949, Schmidt 1967) is a visual survey of stars in the declination zones -02 to -23 degrees, completed as an extension to Argelander's (1859-62) monumental Bonner Durchmusterung (BD). Schoenfeld's survey was carried out using the same methods as had been used for the BD, which Schoenfeld had helped to compile as one of Argelander's assistants. The goal of the survey was to extend the BD to declination -23 deg (a plan originally adopted by Argelander) with approximately the same magnitude limits, although the primary instrument was of larger aperture (159 mm) than the 78-mm telescope used for the BD. Thus, whereas the BD magnitude estimates extend to 9.4 mag with all fainter stars assigned a magnitude of 9.5, the SD magnitude estimates extend to 9.9 mag with all fainter stars assigned a magnitude of 10. As with the BD, the SD contains a rather large number of stars fainter than 10.0 mag and even occasionally as faint as 11 mag. Positions are given to the nearest 0.1 sec in right ascension and 0.1 arcmin in declination as in the BD. The document originally prepared by the ADC (adc.doc) contains substantial additional information. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file adc.doc 79 602 The original document sd.dat 32 134834 The SD catalog sdchg.dat 75 29 Changes from the printed catalog
Byte-by-byte Description of file: sd.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [SD] The catalog prefix 3- 5 I3 deg zone [-1/-23] The declination zone 6- 10 I5 --- num The number of the star within the zone 11 A1 --- n_num *[aDM*] Code 12- 15 F4.1 mag mag *Estimated visual magnitude 16- 17 I2 h RAh Right Ascension 1855 (hours) 18- 19 I2 min RAm Right Ascension 1855 (minutes) 20- 23 F4.1 s RAs Right Ascension, 1855 (seconds) 24 A1 --- DE- [-]Sign of declination 25- 26 I2 deg DEd Declination 1855 (degrees) 27- 30 F4.1 arcmin DEm Declination 1855 (minutes)
Note on n_num: Upper and lower case codes. All lower case letters represent supplemental (footnoted) stars added to the catalog via published corrigenda. Upper case letters and asterisks are flags that indicate changes to the original data or to the status of a star in the catalog. They have the following meanings: * Data have been corrected as a result of corrigenda, or there are special notes associated with the star. All changes are given in Section A, Table 4, with appropriate notes. D The star has been deleted in a later edition of the catalog. This was done by overstriking entries with horizontal lines. M The star was noted as "missing" in a list published by Pickering (1907). This entry (there is only one such star) was verified by R. A. Downes and at the ADC. Note on mag: 20.0 = neb; 30.0 = var; 40.0 = nova or nova?; 50.0 = cum (integrated magnitude estimate of a cluster of stars).
Byte-by-byte Description of file: sdchg.dat
Bytes Format Units Label Explanations
1- 3 I3 deg zone [-1/-23] The SD zone 4- 8 I5 --- num The SD number 9 A1 --- n_num Code on star number 11- 13 A3 --- field The field changed 15- 18 F4.1 --- old ?The printed value 20- 23 F4.1 --- new ?The corrected value 27- 75 A49 --- note Comments
History: The data in the machine-readable Southern Durchmusterung were keyed directly to disk storage from the published catalogs at the Centre de Donnees Astronomiques de Strasbourg (-02 through -21 deg. zones) and at the Astronomical Data Center of the National Space Science Data Center at the NASA Goddard Space Flight Center (-01, -22 and -23 deg. zones). Most of the data entry work was done at the CDS, where the data were also verified. The ADC zones -01 and -23, although not often used for stellar designations (the BD is used in zone -01 and the Cordoba Durchmusterung in zone -23), were added for completeness. The three ADC zones were computerized and proofread by Wayne Warren Jr. All zones were carefully examined, checked for sequencing and record counts, reformatted, and merged in the correct order at the ADC, where the final catalog was assembled. The published corrigenda lists were cross checked against the reprinted editions (1949, 1967) of the catalog. The final catalog was run through a verification program that checked numerical sequencing of the SD numbers, monotonic increase in right ascension, and allowed data ranges. All cases where stars are out of RA order were checked in the original data to verify that their positions are as in the original catalog or the corrigenda. The final file is ordered north to south strictly by SD number, i.e., in the zone order -01, -02, ..., -23. Users should note, however, that all stars are not strictly in right ascension order within each zone. This is because individual stars are occasionally out of RA order in the original catalog and because of corrections inserted from the corrigenda. Changes to Catalog Data: All changes made to SD data and known to Warren and Ochsenbein were incorporated into the present machine-readable version. Unlike the Bonner Durchmusterung, where there had been numerous stars added and deleted, changes in supplemental entries from version to version, and a large number of data corrections, the changes to the SD are relatively few. There were two stars added as supplementary entries ("a" suffix), two stars deleted, and one star published as "missing" by Pickering (1907) and subsequently verified by R. A. Downes of Applied Research Corporation. A small list of corrections was also included in the introduction to the original published catalog. These modifications to the printed catalog are flagged by codes in byte 11 of the affected records and are listed in sdchg.dat. See also: I/122 : Bonner Durchmusterung (+89 to -01 degrees) I/114 : Cordoba Durchmusterung (-22 to -90 degrees) I/108 : Cape Photographic Durchmusterung (-18 to -90 degrees) Acknowledgments: Drs. Warren and Ochsenbein express appreciation to M. J. Wagner, M. Maslo, and R. Bonnet, who keyed the SD data to disk at the CDS using preprocessing software written and implemented by F. Ochsenbein. They thank Dr. R. A. Downes for bringing the cases of "missing" BD and SD stars to their attention and are grateful for the support of the CDS director, Dr. C. Jaschek, during the course of the work. This document is based on the original ADC document prepared by Wayne Warren, Jr. of the ADC and Francois Ochsenbein of the CDS. References: Argelander, F. W. A. 1859-1862, Bonner Sternverzeichniss, erste bis dritte Sektion, Astronomischen Beobachtungen auf der Sternwarte der Koeniglichen Rhein., Friedrich-Wilhelms-Universitat zu Bonn, Bande 3-5. Becker, F. 1949, Bonner Durchmusterung, Suedlicher Teil, Deklinations-Zonen -2 bis -22 grade Sternverzeichnis, zweite, berichtigte Auflage (Bonn: Ferd. Duemmlers Verlag). Chandler, S. C. 1896, Astron. J. 16, 145. Couteau, P., Fulconis, M., Ochsenbein, F., Wagner, M. J., and Maslo, W. 1983, Inf. Bull. CDS No. 25, p. 83. Kuestner, F. 1918, Astron. Nach. 206, 69 (Nr. 4929). Kuestner, F. 1925, Astron. Nach. 223, 309 (Nr. 5347). Pickering, E. C. 1885, Harv. Ann. 14. Pickering, E. C. 1892, Harv. Ann. 23. Pickering, E. C. 1907, Astron. Nach. 175, 139. Pickering, E. C. 1913, Harv. Ann. 72. Schmidt, H. 1967, Bonner Durchmusterung, Suedlicher Teil, Deklinations- Zonen -2 bis -22 grade Sternverzeichnis, dritte Auflage (Bonn: Ferd. Duemmlers Verlag). Schoenfeld, E. 1886, Bonner Sternverzeichniss, vierte Sektion, Astronomische Beobachtungen auf der Sternwarte der Koeniglichen Rheinischen Friedrich-Wilhelms-Universitat zu Bonn 8, Part IV (Bonn: Adolph Marcus). Sticker, B. 1935, Astron. Nach. 256, 341 (Nr. 6139). Wagner, M. J. 1984, Inf. Bull. CDS No. 26, p. 87. Wagner, M. J. 1986, Inf. Bull. CDS No. 30, p. 117. Warren, W. H Jr. 1987, Inf. Bull. CDS No. 32, p. 67.
(End) Nancy G. Roman [NSSDC/ADC] 12-Nov-1994
|The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line|