J/AJ/131/1416 IR Photometry of nearby globular clusters (Nantais+, 2006)
Nearby spiral globular cluster systems. I. Luminosity functions.
Nantais J.B., Huchra J.P., Barmby P., Olsen K.A.G., Jarrett T.H.
<Astron. J., 131, 1416-1425 (2006)>
=2006AJ....131.1416N 2006AJ....131.1416N
ADC_Keywords: Clusters, globular ; Infrared sources
Keywords: galaxies: individual (M31, NGC 55, NGC 247, NGC 253, NGC 300) -
galaxies: spiral - galaxies: star clusters -
globular clusters: general
Abstract:
We compare the near-infrared (JHK) globular cluster luminosity
functions (GCLFs) of the Milky Way, M31, and the Sculptor Group spiral
galaxies. We obtained near-infrared photometry with the Persson's
Auxiliary Nasmyth Infrared Camera on the Baade Telescope for 38
objects (mostly globular cluster candidates) in the Sculptor Group. We
also have near-infrared photometry from the Two Micron All Sky Survey
(2MASS)-6X database for 360 M31 globular cluster candidates and
aperture photometry for 96 Milky Way globular cluster candidates from
the 2MASS All-Sky and Second Incremental Release databases.
Description:
On the nights of 2003 October 30-November 2, we obtained near-infrared
(JHK) photometry for the Sculptor Group GC candidates from the Baade
6.5 m telescope at Las Campanas Observatory, Chile, using the
Persson's Auxiliary Nasmyth Infrared Camera (PANIC) 1024x1024
Hg-Cd-Te detector built by P. Martini and E. Persson.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 65 99 Milky Way infrared photometry
table2.dat 74 360 M31 2MASS 6x photometry
table3.dat 101 40 Sculptor infrared photometry
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See also:
VII/202 : Globular Clusters in the Milky Way (Harris, 1997)
J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000)
J/AJ/127/2674 : Globular clusters in Sculptor group (Olsen+, 2004)
J/A+A/328/83 : Globular clusters luminosity function (Chabrier+ 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Source name
12 A1 --- f_Name [*] Flag on Name (1)
14- 15 I2 h RAh Hour of Right Ascension (J2000) (2)
17- 18 I2 min RAm Minute of Right Ascension (J2000) (2)
20- 24 F5.2 s RAs Second of Right Ascension (J2000) (2)
26 A1 --- DE- Sign of the Declination (J2000) (2)
27- 28 I2 deg DEd Degree of Declination (J2000) (2)
30- 31 I2 arcmin DEm Arcminute of Declination (J2000) (2)
33- 34 I2 arcsec DEs Arcsecond of Declination (J2000) (2)
36- 42 F7.3 mag JMAG ? Absolute J band magnitude (2)
44- 50 F7.3 mag HMAG ? Absolute H band magnitude (2)
52- 58 F7.3 mag KMAG ? Absolute K band magnitude (2)
60- 65 F6.2 mag VMAG ? Absolute V band magnitude (2)
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Note (1): A recent globular cluster discoveries from infrared surveys.
Presented in the table with estimated dereddening already included.
Note (2): Coordinates and absolute V magnitudes from Harris (1996,
Cat. VII/202) catalog. Absolute magnitudes in J, H, and K were
calculated by subtracting our V-J, V-H, and V-K colors from the
Harris MV values.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Source name (1)
9- 10 I2 h RAh Hour of Right Ascension (J2000)
12- 13 I2 min RAm Minute of Right Ascension (J2000)
15- 19 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- 31 F5.2 arcsec DEs Arcsecond of Declination (J2000)
33- 38 F6.3 mag Jmag 2MASS J band magnitude
40- 45 F6.3 mag Hmag 2MASS H band magnitude
47- 52 F6.3 mag Kmag 2MASS K band magnitude
54- 58 F5.3 mag e_Jmag ? The 1σ error in Jmag
60- 64 F5.3 mag e_Hmag ? The 1σ error in Hmag
66- 70 F5.3 mag e_Kmag ? The 1σ error in Kmag
72 I1 --- q_Jmag Quality flag on Jmag (2)
73 I1 --- q_Hmag Quality flag on Hmag (2)
74 I1 --- q_Kmag Quality flag on Kmag (2)
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Note (1): Objects with "2m" designations are previously known GC candidates
with no matches in the Barmby et al. (2000, Cat. J/AJ/119/727) list
of 439 objects. All other names are from the Barmby et al. list.
Note (2): Quality flag, numbered as follows:
1 = ABC;
2 = D;
3 = E;
4 = U(rdflg=0);
5 = F;
6 = U(rdflg=6).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Galaxy Galaxy name
9- 18 A10 --- Name Source name in Galaxy
20- 21 I2 h RAh Hour of Right Ascension (J2000)
23- 24 I2 min RAm Minute of Right Ascension (J2000)
26- 30 F5.2 s RAs Second of Right Ascension (J2000)
32 A1 --- DE- Sign of the Declination (J2000)
33- 34 I2 deg DEd Degree of Declination (J2000)
36- 37 I2 arcmin DEm Arcminute of Declination (J2000)
39- 43 F5.2 arcsec DEs Arcsecond of Declination (J2000)
45- 50 F6.3 mag Jmag ? The J band magnitude
52- 57 F6.3 mag Hmag ? The H band magnitude
59- 64 F6.3 mag Kmag ? The K band magnitude
66- 70 F5.3 mag e_Jmag ? The 1σ error in Jmag
72- 76 F5.3 mag e_Hmag ? The 1σ error in Hmag
78- 82 F5.3 mag e_Kmag ? The 1σ error in Kmag
84- 94 A11 --- [OMS2004] Object number from Olsen (1)
96- 101 A6 --- Type Object type (2)
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Note (1): The object number in Olsen et al. (2004, Cat. J/AJ/127/2674),
Table 3, the source of Washington photometry. Objects with "K" for
this value are from Kim et al. (2002JKAS...35....9K 2002JKAS...35....9K, J. Korean Astron.
Soc., 35, 9), bearing the same number designation as shown here.
Note (2): Object type, defined as follows:
c = probable globular cluster;
s(Ols) = object identified as a probable star by Olsen et al.
(Cat. J/AJ/127/2674);
s(new) = object we (Paper II, in prep.) identified as a probable star.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 23-Jan-2007