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 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
--------------------------------------------------------------------------------
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 102 439 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 83 283 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 1σ uncertainty in Vmag
62- 66 F5.2 mag e_B-V The 1σ uncertainty in B-V
68- 72 F5.2 mag e_U-B The 1σ uncertainty in U-B
74- 78 F5.2 mag e_V-R The 1σ 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 1999A&AS..137..117B), Wolf-Rayet stars
3 Azzopardi and Vigneau (1982A&AS...50..291A 1982A&AS...50..291A) Catalog
4 Massey et al. (1995ApJ...438..188M 1995ApJ...438..188M) SMC "Incompleteness Field"
5 From Feast et al. (1960MNRAS.121..337F 1960MNRAS.121..337F) or
Sanduleak (1968AJ.....73..246S 1968AJ.....73..246S, 1969AJ.....74..877S 1969AJ.....74..877S)
6 Massey and Duffy (2001ApJ...550..713M 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 1970CoTol..89.....S)
2: Rousseau et al. (1978A&AS...31..243R 1978A&AS...31..243R)
3: Feast et al. (1960MNRAS.121..337F 1960MNRAS.121..337F)
4: Ardenberg et al. (1972A&AS....6..249A 1972A&AS....6..249A) and/or
Brunet et al. (1973A&AS....9..447B 1973A&AS....9..447B)
5: Walborn (1977ApJ...215...53W 1977ApJ...215...53W)
6: Crampton (1979ApJ...230..717C 1979ApJ...230..717C)
7: Conti, Garmany, & Massey (1986AJ.....92...48C 1986AJ.....92...48C)
8: Fitzpatrick (1988ApJ...335..703F 1988ApJ...335..703F)
9: Massey et al. (1995ApJ...438..188M 1995ApJ...438..188M)
10: Massey et al. (2000AJ....119.2214M 2000AJ....119.2214M)
11: Breysacher, Azzopardi, & Testor (1999A&AS..137..117B 1999A&AS..137..117B)
12: Azzopardi & Vigneau (1982A&AS...50..291A 1982A&AS...50..291A) and references therein
13: Ardeberg & Maurice (1977A&AS...30..261A 1977A&AS...30..261A)
14: Dubois, Jaschek, & Jaschek (1977A&A....60..205D 1977A&A....60..205D)
15: Crampton & Greasley (1982PASP...94...31C 1982PASP...94...31C)
16: Humphreys (1983ApJ...265..176H 1983ApJ...265..176H)
17: Walborn (1983ApJ...265..716W 1983ApJ...265..716W)
18: Garmany et al. (1987AJ.....93.1070G 1987AJ.....93.1070G)
19: Sanduleak (1969AJ.....74..877S 1969AJ.....74..877S)
20: Massey, previously unpublished
21: Massey & Duffy (2001ApJ...550..713M 2001ApJ...550..713M)
22: Walborn et al. (2000PASP..112.1243W 2000PASP..112.1243W)
23: Walborn et al. (1995PASP..107..104W 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 Δ(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 1979ApJS...39..389H)
table9b.dat: Elias, Frogel, & Humphreys (1985ApJS...57...91E 1985ApJS...57...91E)
Note (3): Identification for stars with spectral types from
table9a.dat: Sanduleak & Philip (1977PW&SO...2..105S 1977PW&SO...2..105S)
table9b.dat: Sanduleak (1989AJ.....98..825S 1989AJ.....98..825S)
Note (4): R20 was classified K5 Ia by Feast et al. (1960MNRAS.121..337F 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