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Individual files can be fetched (via http) from here
or via ftp from: ftp://cdsarc.u-strasbg.fr/pub/cats/III/235A

The catalogue can be queried from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=III/235A

This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.


III/235A        Spectroscopically Identified White Dwarfs  (McCook+, 2006)
================================================================================
A Catalogue of Spectroscopically Identified White Dwarfs (Version August 2006)
     McCook G.P., Sion E.M.
    <Astrophys. J. Suppl. Ser. 121, 1 (1999)>
    =1999ApJS..121....1M
================================================================================
ADC_Keywords: Stars, white dwarf


Description:
    This is an update of the Villanova catalog published in the ApJS
    paper, corresponding to the Web version of the catalog in August 2006
    (see http://www.astronomy.villanova.edu/WDCatalog/index.html). The
    introduction to the 1999 catalog is in the file "preface.tex".

    This version includes many additions and corrections to the original
    4th edition: additional entries (555 newly discovered white dwarfs),
    additional data for previously known white dwarfs (marked in the
    catalog); new SDSS photometry has also been added. The total number
    of white dwarfs in this version is 5557.

File Summary:

FileName Lrecl Records Explanations
× ReadMe 80 . This file × preface.tex 97 840 Introduction by G.P. McCook and E.M. Sion × catalog.dat 240 10132 Data for the White Dwarfs × names.dat 26 13405 Cross-identifications of White Dwarfs × notes.dat 255 479 Notes for stars flagged in "catalog.dat" × refs.dat 231 594 References mentioned in file "catalog.dat"
See also: http://www.astronomy.villanova.edu/WDCatalog/index.html : The Web WD Catalog home page. Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1 A1 --- New [Nc] for a New star, c for corrected position 2- 11 A10 --- WD White Dwarf (WD) number (1) 12 A1 --- n_WD [*] Name originally J-based (7) 13- 14 I2 h RAh ?Hours RA, Equinox=B1950, Epoch=1950.0 (2) 16- 17 I2 min RAm ?Minutes RA, Equinox=B1950, Epoch=1950.0 (2) 19- 20 I2 s RAs [0/60]? Seconds RA (2) 22 A1 --- DE- ?Declination sign (2) 23- 24 I2 deg DEd ?Degrees Dec, Equinox=B1950, Epoch=1950.0 (2) 26- 29 F4.1 arcmin DEm ?Minutes Dec, Equinox=B1950, Epoch=1950.0 (2) 30 A1 --- --- [C] indicates a corrected position 31- 39 A9 --- SpType Spectral type (definitions in the paper, or in file "preface.tex"). 40 A1 --- bNote [*b?] 'b' if white dwarf is member of binary, '*' indicates a note in file "notes.dat" 41 A1 --- --- [(] Left bracket enclosing the reference 42- 43 A2 --- r_SpType Reference code for spectral type 44 A1 --- --- [)] Right bracket enclosing the reference 45 A1 --- n_SpType [NACU] Modifications of spectral type (6) 46- 71 A26 --- Names Other names for this star, see table Names 72- 76 F5.2 mag Vmag ?V or other magnitude (see n_Vmag) 77 A1 --- u_Vmag Uncertainty flag (:) on Vmag 78- 79 A2 --- n_Vmag [pgB ] 'pg' if Vmag is photographic magnitude, ' B' if Vmag is a B magnitude 80- 85 F6.3 mag B-V ?B-V color in the UBV system 86 A1 --- u_B-V Uncertainty flag (:) on B-V color 87- 89 A3 --- ColClass Color class from Lowell or Luyten PM surveys 90- 95 F6.3 mag U-B ?U-B color in the UBV system 96 A1 --- u_U-B Uncertainty flag (:) on U-B color 97 A1 --- --- [(] Left bracket enclosing the reference 98- 99 A2 --- r_Vmag Wide band photometry reference code 100 A1 --- --- [)] Right bracket enclosing the reference 101 A1 --- f_Vmag [NACU] Modifications of UBV magnitudes (6) 102-106 F5.2 mag Vsphot ?V mag from multichannel spectrophotometry 108-112 F5.2 mag (g-r) ?g-r color from spectrophotometry 113 A1 --- u_(g-r) Uncertainty flag (:) on g-r 114 A1 --- --- [(] Left bracket enclosing the reference 115-116 A2 --- r_Vsphot Multichannel spectrophotometry reference code 117 A1 --- --- [)] Right bracket enclosing the reference 118 A1 --- f_Vsphot [NACU] Modifications of Vsphot (6) 119-124 F6.3 mag ymag ?y mag from ubvy photoelectric observations 125-130 F6.3 mag b-y ?b-y color from uvby 131 A1 --- u_b-y Uncertainty flag (:) on b-y 132-137 F6.3 mag u-b ?u-b color from uvby 138 A1 --- --- [(] Left bracket enclosing the reference 139-140 A2 --- r_ymag uvby photoelectric photometry reference code 141 A1 --- --- [)] Right bracket enclosing the reference 142 A1 --- n_ymag [NACU] Modifications of uvby photometry (6) 144-148 F5.2 mag AbsMag ?Absolute visual magnitude 149 A1 --- u_AbsMag uncertainty flag (:) on AbsMag (3) 151-153 I3 kK Teff ?Effective temperature 154 A1 --- --- [(] Left bracket enclosing the reference 155-156 A2 --- n_AbsMag Method of calculation of AbsMag (5) 157 A1 --- --- [)] Right bracket enclosing the reference 158 A1 --- n_Mag [NAC] Modification of absolute magnitude (6) 159 A1 --- l_pm [~<] Limit flag on pm 160-165 F6.4 arcsec/yr pm ?Total proper motion 166 A1 --- u_pm [:!0123] Uncertainty flag (:) on pm, problem on proper motion (!), or Estimated proper motion (4) 168-172 F5.1 deg pmPA ?Position angle of proper motion vector 173 A1 --- --- [(] Left bracket enclosing the reference 174-175 A2 --- r_pm Proper motion reference code 176 A1 --- --- [)] Right bracket enclosing the reference 177 A1 --- n_pm [NAC] New line, Additional or Corrected pm 178-183 F6.1 km/s RadVel ?Radial velocity 184 A1 --- --- [(] Left bracket enclosing the reference 185-186 A2 --- r_RadVel Radial velocity reference 187 A1 --- --- [)] Right bracket enclosing the reference 188 A1 --- n_RadVel [NAC] Modification of RadVel (6) 189-195 F7.4 arcsec Plx ?Trigonometric parallax 196-200 F5.1 mas e_Plx ?Reported mean error of parallax 201 A1 --- --- [(] Left bracket enclosing the reference 202-203 A2 --- r_Plx Parallax reference code 204 A1 --- --- [)] Right bracket enclosing the reference 205 A1 --- n_Plx [NAC] Modification of parallax (6) 207-211 F5.2 mag gmag ?SDSS green magnitude 212 A1 --- u_gmag [*:] questionable (*) or uncertain (:) SDSS photometry 213-217 F5.2 mag u-g ?SDSS Color Index 219-223 F5.2 mag g-r ?SDSS Color Index 225-229 F5.2 mag r-i ?SDSS Color Index 231-235 F5.2 mag i-z ?SDSS Color Index 236 A1 --- --- [(] Left bracket enclosing the reference 237-238 A2 --- r_SDSS SDSS colors reference 239 A1 --- --- [)] Right bracket enclosing the reference 240 A1 --- n_SDSS [NAC] Modification of SDSS photometry (6)
Note (1): Stars having identical catalog numbers, whether binary or not, are distinguished by using the designations .1 and .2 in bytes 9-10 Note (2): The positions have quite various precisions; generally speaking most of the older stars have 1950 coordinates accurate to the arcmin from the references, while newer WDs have 2000 coordinates in the reference which were precessed back to 1950 and rounded to a 0.1arcmin accuracy. No correction has been made for proper motion. Note (3): For DO and DOZ white dwarfs, AbsMag is a directly derivable effective temperature value. These are given in units of 103 K A ':' for uncertain AbsMag may appear also (WD 0736+053) Note (4): In cases where only an estimated proper motion is reported in the Lowell proper-motion surveys, the "pm" field is blank and a corresponding code is given there in "Epm" field. These codes are defined in Giclas et al. (1967, 1970) and are the following: 0: Stars of blue color whose motions are too small to definitely verify on all plates. 1: pm <= 0.1 arcsec/yr 2: 0.1 <= pm < 0.2 arcsec/yr 3: 0.2 <= pm < 0.26 arcsec/yr Note (5): The codes to indicate the method of calculation of the absolute magnitude are: 1 = trigonometric parallax (>0.1arcsec) 2 = multichannel spectrophotometric colors 3 = uvby (Stroemgren) colors 4 = UBV photometry 5 = Teff value from Wesemael, Green and Liebert (1993PASP..105..761W), Werner and Heber (1992, in "The Atmospheres of Early-Type stars", ed. U. Heber & S. Jeffrey, Springer, p. 273) or Napiwotzki and Schonberner (1991, in "White Dwarfs", ed. G. Vauclair and E.M. Sion, NATO ASI Series, Series C, 336: Dordrecht, Kluwer, p. 39) 6 = Liebert, Dahn and Monet (1988ApJ...332..891L) 7 = Bergeron, Ruiz and Leggett (1997ApJS..108..339B) 8 = Liebert et al., (1997, in "White Dwarfs", ed. J.Isern, M. Hernanz & Garcia-Berro, Dordrecht: Kluwer, p. 85) 9 = Smith (1998, Ph.D Thesis, Florida Institute of Technology, Melbourne, Fl.) Note (6): modifications since the publication: N=New, A=Additional, C=Corrected, U=Updated Note (7): Some recently published new white dwarfs were assigned a name based on J2000 position. Such names were transformed into B1950-based WD names by applying the appropriate precession.
Byte-by-byte Description of file: names.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name Common name of the object 15- 16 A2 --- --- [WD] Prefix of catalog 17- 26 A10 --- WD White Dwarf (WD) number
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
2- 3 A2 --- --- [WD] Prefix of catalog 4- 13 A10 --- WD White Dwarf (WD) number 16-255 A240 --- Notes Text of note for this star
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 A2 --- RefCode Reference code 4- 22 A19 --- BibCode CDS/ADS/NED BibCode 24-231 A208 --- Text Text of reference
Acknowledgment: This 1998 version 2 of the White Dwarf Catalog by G. McCook and E.M. Sion last revision June 8, 1999 was copied from ftp://astro1.ast.vill.edu/pub/mccook/. History: * 16-May-2003: WD 2226+210 (central star of Helix Nebula) was corrected into WD 2226-210, and position * 30-Aug-2006: Version August 2006 (III/235A) from G. McCook. References: Giclas, H. L., Burnham, R. Jr., and Thomas, N. G. 1967, Lowell Obs. Bull. No. 141. Giclas, H. L., Burnham, R. Jr., and Thomas, N. G. 1970, Lowell Obs. Bull. No. 153. McCook, G.P.,and Sion, E.M. 1977, A Catalogue of Spectroscopically Identified White Dwarfs, 1st Edition, Villanova Univ. Obs. Contr. No.2 McCook, G.P. and Sion, E.M. 1977, A Catalogue of Spectroscopically Identified White Dwarfs, 2nd Edition, Villanova Univ. Obs. Contr. No.3. McCook, G.P., and Sion, E.M. 1987, Astrophys. J. Suppl. Ser. 65, 603. =1987ApJS...65..603M ================================================================================ (End) Francois Ochsenbein [CDS] 30-Aug-2006

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