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- Extrait du Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
-
- Organisation du catalogue :
-
- Les Θtoiles sont rΘparties dans 50 zones de 30x30 degrΘs selon le mΩme
- principe que les grandes rΘgions du Guide Star Catalog .
- ( Voir Jenkner et al. The Astronomical Journal vol 99, num 6 June 1990 p.2087)
-
- dΘclinaison nombre numΘro de la
- du centre de zones premiΦre zone
- ------------- ------------ --------------
- 15 12 1
- 45 9 13
- 75 4 22
- -15 12 26
- -45 9 38
- -75 4 47
-
- Chaque zone est matΘrialisΘe par un fichier .
- Dans chaque fichier les Θtoiles sont triΘes par magnitude .
-
- Description des enregistrements des fichiers :
-
- BSCrec = record hd, bs, ar, de : longint ;
- mv, b_v : smallint;
- cons : array [1..3] of char;
- flam : byte;
- bayer : array [1..4] of char;
- sp : array[1..20] of char;
- end;
-
- - hd : numΘro du catalogue HD
- - bs : numΘro du catalog Bright Star
- - ar : ascention droite J2000 en degrΘs * 100'000
- - de : declinaison J2000 * 100'000
- - mv : magnitude visuelle * 100
- - b_v : indice de couleur B-V * 100
- - cons : constelation
- - flam : numΘro de Flamsteed
- - bayer : lettre de Bayer
- - sp : classe spectrale
-
- Type Intervalle Format
- ------------ -------------------------- -------------------
- Shortint -128 .. 127 SignΘ, 8 bits
- SmallInt -32768 .. 32767 SignΘ, 16 bits
- Longint -2147483648 .. 2147483647 SignΘ, 32 bits
- Byte 0 .. 255 Non signΘ, 8 bits
- Word 0 .. 65535 Non signΘ, 16 bits
-
-
- Description originale du catalogue :
-
- V/50 Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
- ================================================================================
- The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)
- Hoffleit E.D., Warren Jr. W.H.
- <Astronomical Data Center, NSSDC/ADC (1991)>
- ================================================================================
- ADC_Keywords: Combined data ; Stars, bright
-
-
- Description (prepared by Wayne H. Warren Jr., 1991 June 28):
-
- The Bright Star Catalogue (BSC) is widely used as a source of
- basic astronomical and astrophysical data for stars brighter than
- magnitude 6.5. The catalog contains the identifications of
- included stars in several other widely-used catalogs, double- and
- multiple-star identifications, indication of variability and
- variable-star identifiers, equatorial positions for B1900.0 and
- J2000.0, galactic coordinates, UBVRI photoelectric photometric
- data when they exist, spectral types on the Morgan-Keenan (MK)
- classification system, proper motions (J2000.0), parallax,
- radial- and rotational-velocity data, and multiple-star
- information (number of components, separation, and magnitude
- differences) for known nonsingle stars. In addition to the data
- file, there is an extensive remarks file that gives more detailed
- information on individual entries. This information includes
- star names, colors, spectra, variability details, binary
- characteristics, radial and rotational velocities for companion
- stars, duplicity information, dynamical parallaxes, stellar
- dimensions (radii and diameters), polarization, and membership in
- stellar groups and clusters. The existence of remarks is flagged
- in the main data file.
-
- The BSC contains 9110 objects, of which 9096 are stars (14
- objects catalogued in the original compilation of 1908 are novae
- or extragalactic objects that have been retained to preserve the
- numbering, but most of their data are omitted), while the remarks
- section is slightly larger than the main catalog. The present
- edition of the compilation includes many new data and the remarks
- section has been enlarged considerably.
-
- This preliminary version of the fifth edition of the Bright Star
- Catalogue supersedes the published and machine-readable versions
- of Hoffleit (1982, Yale University Observatory) and is intended
- for use until the final version of this edition is completed. It
- has been made available only for dissemination on the
- Astronomical Data Center CD ROM.
-
- The brief format description applies to the preliminary version
- of the catalog only. The format will change for the final
- edition.
-
-
- Author's addresses:
- Dorrit Hoffleit
- Department of Astronomy
- Yale University
- Wayne H. Warren Jr.
- ST Systems Corporation
- National Space Science Data Center
- NASA Goddard Space Flight Center
-
-
- File Summary:
- --------------------------------------------------------------------------------
- FileName Lrecl Records Explanations
- --------------------------------------------------------------------------------
- ReadMe 80 . This file
- catalog.dat 197 9110 The main part of the Catalogue
- notes.dat 132 9190 Remarks
- --------------------------------------------------------------------------------
-
- Byte-by-byte Description of file: catalog.dat
- --------------------------------------------------------------------------------
- Bytes Format Units Label Explanations
- --------------------------------------------------------------------------------
- 1- 4 I4 --- HR [1/9110]+ Harvard Revised Number
- = Bright Star Number
- 5- 14 A10 --- Name Name, generally Bayer and/or Flamsteed name
- 15- 25 A11 --- DM Durchmusterung Identification (zone in
- bytes 17-19)
- 26- 31 I6 --- HD [1/225300]? Henry Draper Catalog Number
- 32- 37 I6 --- SAO [1/258997]? SAO Catalog Number
- 38- 41 I4 --- FK5 ? FK5 star Number
- 42 A1 --- IRflag [I] I if infrared source
- 43 A1 --- r_IRflag *[ ':] Coded reference for infrared source
- 44 A1 --- Multiple *[AWDIRS] Double or multiple-star code
- 45- 49 A5 --- ADS Aitken's Double Star Catalog (ADS) designation
- 50- 51 A2 --- ADScomp ADS number components
- 52- 60 A9 --- VarID Variable star identification
- 61- 62 I2 h RAh1900 ?Hours RA, equinox B1900, epoch 1900.0 (1)
- 63- 64 I2 min RAm1900 ?Minutes RA, equinox B1900, epoch 1900.0 (1)
- 65- 68 F4.1 s RAs1900 ?Seconds RA, equinox B1900, epoch 1900.0 (1)
- 69 A1 --- DE-1900 ?Sign Dec, equinox B1900, epoch 1900.0 (1)
- 70- 71 I2 deg DEd1900 ?Degrees Dec, equinox B1900, epoch 1900.0 (1)
- 72- 73 I2 arcmin DEm1900 ?Minutes Dec, equinox B1900, epoch 1900.0 (1)
- 74- 75 I2 arcsec DEs1900 ?Seconds Dec, equinox B1900, epoch 1900.0 (1)
- 76- 77 I2 h RAh ?Hours RA, equinox J2000, epoch 2000.0 (1)
- 78- 79 I2 min RAm ?Minutes RA, equinox J2000, epoch 2000.0 (1)
- 80- 83 F4.1 s RAs ?Seconds RA, equinox J2000, epoch 2000.0 (1)
- 84 A1 --- DE- ?Sign Dec, equinox J2000, epoch 2000.0 (1)
- 85- 86 I2 deg DEd ?Degrees Dec, equinox J2000, epoch 2000.0 (1)
- 87- 88 I2 arcmin DEm ?Minutes Dec, equinox J2000, epoch 2000.0 (1)
- 89- 90 I2 arcsec DEs ?Seconds Dec, equinox J2000, epoch 2000.0 (1)
- 91- 96 F6.2 deg GLON ?Galactic longitude (1)
- 97-102 F6.2 deg GLAT ?Galactic latitude (1)
- 103-107 F5.2 mag Vmag ?Visual magnitude (1)
- 108 A1 --- n_Vmag *[ HR] Visual magnitude code
- 109 A1 --- u_Vmag [ :?] Uncertainty flag on V
- 110-114 F5.2 mag B-V ? B-V color in the UBV system
- 115 A1 --- u_B-V [ :?] Uncertainty flag on B-V
- 116-120 F5.2 mag U-B ? U-B color in the UBV system
- 121 A1 --- u_U-B [ :?] Uncertainty flag on U-B
- 122-126 F5.2 mag R-I ? R-I in system specified by n_R-I
- 127 A1 --- n_R-I [CE:?D] Code for R-I system (Cousin, Eggen)
- 128-147 A20 --- SpType Spectral type
- 148 A1 --- n_SpType [evt] Spectral type code
- 149-154 F6.3 arcsec/yr pmRA ?Annual proper motion in RA J2000, FK5 system
- 155-160 F6.3 arcsec/yr pmDE ?Annual proper motion in Dec J2000, FK5 system
- 161 A1 --- n_Parallax [D] D indicates a dynamical parallax,
- otherwise a trigonometric parallax
- 162-166 F5.3 arcsec Parallax ? Trigonometric parallax (unless n_Parallax)
- 167-170 I4 km/s RadVel ? Heliocentric Radial Velocity
- 171-174 A4 --- n_RadVel *[V?SB123O ] Radial velocity comments
- 175-176 A2 --- l_RotVel [<=> ] Rotational velocity limit characters
- 177-179 I3 km/s RotVel ? Rotational velocity, v sin i
- 180 A1 --- u_RotVel [ :v] uncertainty and variability flag on
- RotVel
- 181-184 F4.1 mag Dmag ? Magnitude difference of double,
- or brightest multiple
- 185-190 F6.1 arcsec Sep ? Separation of components in Dmag
- if occultation binary.
- 191-194 A4 --- MultID Identifications of components in Dmag
- 195-196 I2 --- MultCnt ? Number of components assigned to a multiple
- 197 A1 --- NoteFlag [*] a star indicates that there is a note
- (file notes.dat)
- --------------------------------------------------------------------------------
- Note (1): These fields are all blanks for stars removed from
- the Bright Star Catalogue (see notes.dat).
- Note on r_IRflag:
- Blank if from NASA merged Infrared Catalogue, Schmitz et al., 1978;
- ' if from Engles et al. 1982
- : if uncertain identification
- Note on Multiple:
- A = Astrometric binary
- D = Duplicity discovered by occultation;
- I = Innes, Southern Double Star Catalogue (1927)
- R = Rossiter, Michigan Publ. 9, 1955
- S = Duplicity discovered by speckle interferometry.
- W = Worley (1978) update of the IDS;
- Note on n_Vmag:
- blank = V on UBV Johnson system;
- R = HR magnitudes reduced to the UBV system;
- H = original HR magnitude.
- Note on n_RadVel:
- V = variable radial velocity;
- V? = suspected variable radial velocity;
- SB, SB1, SB2, SB3 = spectroscopic binaries,
- single, double or triple lined spectra;
- O = orbital data available.
- --------------------------------------------------------------------------------
-
- Byte-by-byte Description of file: notes.dat
- --------------------------------------------------------------------------------
- Bytes Format Units Label Explanations
- --------------------------------------------------------------------------------
- 2- 5 I4 --- HR [1/9110]+= Harvard Revised (HR)
- 6- 7 I2 --- Count Note counter (sequential for a star)
- 8- 11 A4 --- Category *[A-Z: ] Remark category abbreviation:
- 13-132 A120 --- Remark Remarks in free form text
- --------------------------------------------------------------------------------
- Note on Category: the following abbreviations are used:
- C - Colors;
- D - Double and multiple stars;
- DYN - Dynamical parallaxes;
- G - Group membership;
- M - Miscellaneous.
- N - Star names;
- P - Polarization;
- R - Stellar radii or diameters;
- RV - Radial and/or rotational velocities;
- S - Spectra;
- SB - Spectroscopic binaries;
- VAR - Variability;
- The category abbreviation is always followed by a colon (:).
- --------------------------------------------------------------------------------
-
- Historical Notes:
- * 02-Oct-1993 at CDS (Francois Ochsenbein)
- A few corrections have been inserted from the CD-ROM version
- "Selected Astronomical Catalogs, Volume 1, 1991, directory
- /combined/bsc5 at CDS with the agreement of Wayne H. Warren Jr:
- 1. The spectral type for HR 6397 is from Walborn and contained octal 032
- (control-Z) characters instead of square brackets around the "n".
- 2. Two remarks have been added for 6985 and 8817
- 3. Byte 197 (NoteFlag) of "catalog" file corrected for stars
- 202 7126 7482 7614 8982 (removed asterisk)
- 285 342 841 843 991 1181 1553 1652 2269 2271 (added asterisk)
- 2837 3133 3962 4522 4789 6692 7076 7328 8306 8667 (added asterisk)
- * 02-Nov-1995 at CDS (Francois Ochsenbein):
- Documentation slightly changed to accommodate to standards, and
- two lines which were inverted in "notes" have been replaced.
- ================================================================================
- (End) Francois Ochsenbein [CDS] 02-Nov-1995
-
-