ACDS V10.0 - Detailed Description of II/236

ACDS V10.0 - Mon Jan 20 22:30:48 CET 2025

| # Detailed Description of II/236 : UBVR CCD survey of the Magellanic clouds (Massey+, 2002) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    II/236       UBVR CCD survey of the Magellanic clouds    (Massey+, 2002)
    ================================================================================
    A UBVR CCD survey of the Magellanic clouds.
        Massey P.
       <Astrophys. J. Suppl. Ser. 141, 81 (2002)>
       =2002ApJS..141...81M
    ================================================================================
    ADC_Keywords: Magellanic Clouds ; Photometry, UBVRI ; Photometry, CCD

    Keywords: catalogs - Magellanic Clouds - stars: early-type - stars: evolution -
              surveys

    Abstract:
        We present photometry and a preliminary interpretation of a UBVR
        survey of the Large and Small Magellanic Clouds, which covers 14.5
        deg2 and 7.2deg2, respectively. This study is aimed at obtaining
        well-calibrated data on the brighter, massive stars, complementing
        recent, deeper CCD surveys. Our catalog contains 179,655 LMC and
        84,995 SMC stars brighter than V~18.0, and is photometrically complete
        to U~B~V~15.7 and R~15.2, although stars in crowded regions are
        selectively missed. We compare our photometry to that of others, and
        describe the need for gravity-dependent corrections to our CCD U-band
        photometry. We provide a preliminary cross-reference between our
        catalog stars and the stars with existing spectroscopy.

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × lmc.dat           87   179655   LMC catalog (Table 3a)
    × smc.dat           87    84955   SMC catalog (Table 3b)
    × lmc_sp.dat       117      653   LMC stars with spectral information (Table 4)
    × smc_sp.dat       115      439   SMC stars with spectral information (Table 6)
    × lmc_sp2.dat       72       69   Stars in two additional LMC fields with
                                  spectral types (Table 5)
    × cmp.dat           92        6   Comparison of corrected CCD photometry with
                                  new photoelectric photometry (Table 7)
    × lmc_blue.dat      80     5151   LMC blue stars (Table 8a) (1)
    × smc_blue.dat      80     2671   SMC blue stars (Table 8b) (1)
    × lmc_red.dat       86      283   LMC red  stars (Table 9a) (2)
    × smc_red.dat       86      163   SMC red  stars (Table 9b) (2)

    Note (1): Blue stars defined by (B-V)0<0.14 and MBol<-7.0

    Note (2):  Red stars defined by (V-R)0>0.6  and MBol<-7.0

    See also:
       I/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)
       II/65 : VBUWL photometry of blue stars in and between the MC (Wamsteker 1981)
      II/228 : DENIS Catalogue toward Magellanic Clouds (Cioni+ 2000)
      II/232 : UBV photometry of selected regions in the MCs (Braun 2001)
     III/113 : LMC members deep objective-prism survey (Sanduleak, 1989)
       J/AJ/116/180 : Magellanic clouds ultraviolet observations (Parker+ 1998)
      J/AJ/120/1808 : Stroemgren photometry in LMC disk (Cole+, 2000)
       J/AJ/123/855 : Magellanic Clouds Photometric Survey. SMC (Zaritsky+ 2002)
       J/AcA/48/147 : OGLE SMC BVI photometry (Udalski+ 1998)
       J/AcA/48/563 : OGLE SMC eclipsing binaries BVI photometry (Udalski+ 1998)
       J/AcA/49/437 : BVI photometry of OGLE SMC Cepheids (Udalski+, 1999)
       J/AcA/49/223 : BVI photometry of OGLE LMC Cepheids (Udalski+, 1999)
       J/AcA/49/521 : OGLE LMC star clusters BVI photometry (Pietrzynski+, 1999)
       J/AcA/49/543 : OGLE LMC + SMC Cepheids VI photometry (Pietrzynski+, 1999)

    Byte-by-byte Description of file:  lmc.dat  smc.dat

       Bytes Format Units   Label     Explanations

       1-  6  I6    ---     [M2002]   LMC or SMC catalog number
       8-  9  I2    h       RAh       Hour of Right Ascension (J2000)
      11- 12  I2    min     RAm       Minute of Right Ascension (J2000)
      14- 18  F5.2  s       RAs       Second of Right Ascension (J2000)
          20  A1    ---     DE-       Sign of the Declination (J2000)
      21- 22  I2    deg     DEd       Degree of Declination (J2000)
      24- 25  I2    arcmin  DEm       Arcminute of Declination (J2000)
      27- 30  F4.1  arcsec  DEs       Arcsecond of Declination (J2000)
      32- 36  F5.2  mag     Vmag      The V band magnitude
      38- 42  F5.2  mag     B-V       The (B-V) color
      44- 48  F5.2  mag     U-B       ?=99.99 The (U-B) color
      50- 54  F5.2  mag     V-R       ?=99.99 The (V-R) color
      56- 60  F5.2  mag     e_Vmag    The 1{sigma} uncertainty in Vmag
      62- 66  F5.2  mag     e_B-V     The 1{sigma} uncertainty in B-V
      68- 72  F5.2  mag     e_U-B     The 1{sigma} uncertainty in U-B
      74- 78  F5.2  mag     e_V-R     The 1{sigma} uncertainty in V-R
      80- 81  I2    ---     o_Vmag    Number of B and V band measurements
      83- 84  I2    ---     o_Umag    Number of U band measurements
      86- 87  I2    ---     o_Rmag    Number of R band measurements

    Byte-by-byte Description of file:  lmc_sp.dat  smc_sp.dat

       Bytes Format Units   Label     Explanations

           1  I1    ---     Ref       Object catalog reference (1)
       3- 14  A12   ---     Name      Object name (2)
      16- 21  I6    ---     [M2002]   LMC or SMC catalog number
      23- 24  I2    h       RAh       Hour of Right Ascension (J2000)
      26- 27  I2    min     RAm       Minute of Right Ascension (J2000)
      29- 33  F5.2  s       RAs       Second of Right Ascension (J2000)
          35  A1    ---     DE-       Sign of the Declination (J2000)
      36- 37  I2    deg     DEd       Degree of Declination (J2000)
      39- 40  I2    arcmin  DEm       Arcminute of Declination (J2000)
      42- 45  F4.1  arcsec  DEs       Arcsecond of Declination (J2000)
      47- 51  F5.2  mag     Vmag      The V band magnitude
      53- 57  F5.2  mag     B-V       The (B-V) color
      59- 63  F5.2  mag     U-B       ?=99.99 The (U-B) color
      65- 69  F5.2  mag     V-R       ?=99.99 The (V-R) color
      71- 81  A11   ---     SpType    Spectral type
      83- 92  A10   ---     r_SpType  Reference for SpType (3)
      94-115  A22   ---     OName     Other identification

    Note (1): Object catalog reference:
         1  Rousseau et al. (1978, Cat. III/147). We have included a few
            stars from the Rousseau et al. catalog that lack spectral types
         2  Breysacher et al. (1999A&AS..137..117B), Wolf-Rayet stars
         3  Azzopardi and Vigneau (1982A&AS...50..291A) Catalog
         4  Massey et al. (1995ApJ...438..188M) SMC "Incompleteness Field"
         5  From Feast et al. (1960MNRAS.121..337F) or
            Sanduleak (1968AJ.....73..246S, 1969AJ.....74..877S)
         6  Massey and Duffy (2001ApJ...550..713M) Wolf-Rayet Stars
    Note (2): For designations, please see the referenced sources.

    Note (3): Reference for SpType:
         In the form OBJ  NN or SLIT NN, where
         OBJ: indicates objective prism type
        SLIT: indicates slit spectral type
           1: Sanduleak (1970CoTol..89.....S)
           2: Rousseau et al. (1978A&AS...31..243R)
           3: Feast et al. (1960MNRAS.121..337F)
           4: Ardenberg et al. (1972A&AS....6..249A) and/or
              Brunet et al. (1973A&AS....9..447B)
           5: Walborn (1977ApJ...215...53W)
           6: Crampton (1979ApJ...230..717C)
           7: Conti, Garmany, & Massey (1986AJ.....92...48C)
           8: Fitzpatrick (1988ApJ...335..703F)
           9: Massey et al. (1995ApJ...438..188M)
          10: Massey et al. (2000AJ....119.2214M)
          11: Breysacher, Azzopardi, & Testor (1999A&AS..137..117B)
          12: Azzopardi & Vigneau (1982A&AS...50..291A) and references therein
          13: Ardeberg & Maurice (1977A&AS...30..261A)
          14: Dubois, Jaschek, & Jaschek (1977A&A....60..205D)
          15: Crampton & Greasley (1982PASP...94...31C)
          16: Humphreys (1983ApJ...265..176H)
          17: Walborn (1983ApJ...265..716W)
          18: Garmany et al. (1987AJ.....93.1070G)
          19: Sanduleak (1969AJ.....74..877S)
          20: Massey, previously unpublished
          21: Massey & Duffy (2001ApJ...550..713M)
          22: Walborn et al. (2000PASP..112.1243W)
          23: Walborn et al. (1995PASP..107..104W)

    Byte-by-byte Description of file:  lmc_sp2.dat

       Bytes Format Units   Label     Explanations

       1- 10  A10   ---     Name      Name
      12- 13  I2    h       RAh       Right ascension (J2000.0)
      15- 16  I2    min     RAm       Right ascension (J2000.0)
      18- 22  F5.2  s       RAs       Right ascension (J2000.0)
          24  A1    ---     DE-       Declination sign (J2000.0)
      25- 26  I2    deg     DEd       Declination (J2000.0)
      28- 29  I2    arcmin  DEm       Declination (J2000.0)
      31- 34  F4.1  arcsec  DEs       Declination (J2000.0)
      36- 40  F5.2  mag     Vmag      V magnitude
      42- 46  F5.2  mag     B-V       B-V colour index
      48- 52  F5.2  mag     U-B       U-B colour index
      54- 64  A11   ---     SpType    Spectral type
      65- 72  A8    ---     OName     Other name

    Byte-by-byte Description of file:  cmp.dat

       Bytes Format Units   Label     Explanations

       1-  9  A9    ---     Name      Sk designation
      11- 16  I6    ---     [M2002]   LMC catalog number
      18- 22  A5    ---     SpType    Spectral type
      24- 28  F5.2  mag     VmagCCD   CCD V magnitude
      30- 34  F5.2  mag     B-VCCD    CCD B-V colour index
      36- 40  F5.2  mag     U-BCCD    CCD U-B colour index
      42- 45  F4.2  mag     V-RCCD    CCD V-R colour index
      47- 51  F5.2  mag     VmagLan   Landolt photoelectric V magnitude
      53- 57  F5.2  mag     B-VLan    Landolt photoelectric B-V colour index
      59- 63  F5.2  mag     U-BLan    Landolt photoelectric U-B colour index
      65- 68  F4.2  mag     V-RLan    Landolt photoelectric V-R colour index
      70- 74  F5.2  mag     dVmag     CCD-photoelectric V magnitude
      76- 80  F5.2  mag     dB-V      CCD-photoelectric B-V colour index
      82- 86  F5.2  mag     dU-B      CCD-photoelectric U-B colour index
      88- 92  F5.2  mag     dV-R      CCD-photoelectric V-R colour index

    Byte-by-byte Description of file:  lmc_blue.dat  smc_blue.dat

       Bytes Format Units   Label     Explanations

       1-  6  I6    ---     [M2002]   LMC (table8a) or SMC (table8b) catalog number
       8-  9  I2    h       RAh       Hour of Right Ascension (J2000)
      11- 12  I2    min     RAm       Minute of Right Ascension (J2000)
      14- 18  F5.2  s       RAs       Second of Right Ascension (J2000)
          20  A1    ---     DE-       Sign of the Declination (J2000)
      21- 22  I2    deg     DEd       Degree of Declination (J2000)
      24- 25  I2    arcmin  DEm       Arcminute of Declination (J2000)
      27- 30  F4.1  arcsec  DEs       Arcsecond of Declination (J2000)
      33- 37  F5.2  mag     Vmag      The V band magnitude
      39- 43  F5.2  mag     B-V       The (B-V) color
      45- 49  F5.2  mag     U-B       ?=99.99 The (U-B) color
      51- 55  F5.2  mag     V-R       ?=99.99 The (V-R) color
      57- 61  F5.3  [K]     logTeff   Log of the effective temperature
      63- 68  F6.2  mag     BolMag    Bolometric magnitude
      70- 79  A10   ---     SpType    Spectral type

    Byte-by-byte Description of file:  lmc_red.dat  smc_red.dat

       Bytes Format Units   Label     Explanations

       1-  6  I6    ---     [M2002]   LMC (table9a) or SMC (table9b) catalog number
       8-  9  I2    h       RAh       Hour of Right Ascension (J2000)
      11- 12  I2    min     RAm       Minute of Right Ascension (J2000)
      14- 18  F5.2  s       RAs       Second of Right Ascension (J2000)
          20  A1    ---     DE-       Sign of the Declination (J2000)
      21- 22  I2    deg     DEd       Degree of Declination (J2000)
      24- 25  I2    arcmin  DEm       Arcminute of Declination (J2000)
      27- 30  F4.1  arcsec  DEs       Arcsecond of Declination (J2000)
      32- 36  F5.2  mag     Vmag      The V band magnitude
      38- 42  F5.2  mag     B-V       The (B-V) color
      44- 47  F4.2  mag     V-R       The (V-R) color
      49- 53  F5.2  mag     Del(B-V)  The {Delta}(B-V) magnitude (1)
      55- 59  F5.3  [K]     logTeff   Log of the effective temperature
      61- 66  F6.2  mag     BolMag    Bolometric magnitude
      68- 76  A9    ---     SpType    Spectral type (2)
      78- 84  A7    ---     ID        Other identification (3)
          86  A1    ---     f_SpType  [d] Flag on SpType (4)

    Note (1): Del(B-V) = (B-V) - (B-V)cut, where (B-V)cut is the expected
        dividing line between RSGs and foreground stars. Stars with positive
        values are expected to be red supergiants; highly negative values
        suggest foreground stars.
    Note (2): Spectral type from
        table9a.dat: Humphreys (1979ApJS...39..389H)
        table9b.dat: Elias, Frogel, & Humphreys (1985ApJS...57...91E)
    Note (3): Identification for stars with spectral types from
        table9a.dat: Sanduleak & Philip (1977PW&SO...2..105S)
        table9b.dat: Sanduleak (1989AJ.....98..825S)
    Note (4): R20 was classified K5 Ia by Feast et al. (1960MNRAS.121..337F)

    Nomenclature Notes:
         [M2002] LMC NNNNNN for LMC stars, [M2002] SMC NNNNN for SMC stars

    History:
        From electronic version of the journal
    ================================================================================
    (End)                    Greg Schwarz [AAS], Patricia Bauer [CDS]    09-Jul-2002