Dictionary of Nomenclature of Celestial Objects
(Last update: 26-Sep-2023)

Result of query: info cati DIRECT V12650$

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Details on Acronym:   DIRECT
  
DIRECT (DIRECT survey, in M 31)
  ***** Avoid the usage of DIRECT,  prefer D31
 Originof the Acronym: L (2007AJ....134.2474M)

Details on Acronym:   DIRECT
  
DIRECT (DIRECT survey, in M 33)
  ***** Avoid the usage of DIRECT,  prefer D33
 Originof the Acronym: S = Created by Simbad, the CDS Database

Details on Acronym:   DIRECT
  
DIRECT (DIRECT survey)
 Write:<<DIRECT  VNNNNN M31A>>  

        <<DIRECT  VNNNNN M33A>>
Object:V*  (SIMBAD class: Variable* = Variable Star)
  Note:DIRECT project, to obtain the direct distances to M 31 and M 33,    using detached eclipsing binaries and Cepheids.    After discussion with authors:    Format 'VNNNNN DNNA', letter 'D' for DIRECT project,    not used in SIMBAD.    Format 'VNNNNN MNNA', in SIMBAD:    letter 'V' for variable, 'NNNNN' for the number of the star    in the database, followed by the name of the field:    M31A, M31B, M31C, M31D, M31F.
 in source:M 31 = NGC 224
   Ref:=1998AJ....115.1016K
     byKALUZNY J.
, STANEK K.Z., KROCKENBERGER M., SASSELOV D.D., TONRY J.L., MATEO M.
 Astron. J., 115, 1016-1044 (1998)

    DIRECT distances to nearby galaxies using detached eclipsing binaries
    and cepheids. I. Variables in the field M31B.
oThe format is VNNNNN DNNA in the paper (D for DIRECT), and VNNNNN MNNA    in SIMBAD, after discussion with the authors.
oTables 1, 2, 3, 4: <DIRECT VNNNN M31B> N=85
   Ref:=1998AJ....115.1894S
     bySTANEK K.Z.
, KALUZNY J., KROCKENBERGER M., SASSELOV D.D., TONRY J.L., MATEO M.
 Astron. J., 115, 1894-1915 (1998)

    DIRECT distances to nearby galaxies using detached eclipsing binaries
    and cepheids. II. Variables in the field M31A.
oTables 1, 2, 3, 4: <DIRECT VNNNN M31A> N=75.
   Ref:=1999AJ....117.2810S
     bySTANEK K.Z.
, KALUZNY J., KROCKENBERGER M., SASSELOV D.D., TONRY J.L., MATEO M.
 Astron. J., 117, 2810-2830 (1999)

    DIRECT distances to nearby galaxies using detached eclipsing binaries
    and cepheids. III. Variables in the field M31C.
oTables 1-4: <DIRECT VNNNN M31C> N=115.
   Ref:=1999AJ....118..346K
     byKALUZNY J.
, MOCHEJSKA B.J., STANEK K.Z., KROCKENBERGER M., SASSELOV D.D., TONRY J.L., MATEO M.
 Astron. J., 118, 346-365 (1999)

    DIRECT distances to nearby galaxies using detached eclipsing binaries
    and cepheids. IV. Variables in the field M31D.
oTables 1-4: <DIRECT VNNNN M31D> N=71.
   Ref:=1999AJ....118.2211M
     byMOCHEJSKA B.J.
, KALUZNY J., STANEK K.Z., KROCKENBERGER M., SASSELOV D.D.
 Astron. J., 118, 2211-2228 (1999)

    DIRECT distances to nearby galaxies using detached eclipsing binaries
    and cepheids. V. Variables in the field M31F.
oMisprint: inversion of Field II and III
oTables 1-4: <DIRECT VNNNN M31F> N=64.
=E=Catalogue in electronic form as J/AJ/115/1016
=E=Catalogue in electronic form as J/AJ/115/1894
=E=Catalogue in electronic form as J/AJ/118/346
=E=Catalogue in electronic form as J/AJ/118/2211
 Originof the Acronym: S = Created by Simbad, the CDS Database