J/MNRAS/437/1725 Galactic globular clusters SDSS photometry (Vanderbeke+, 2014)
G2C2-I. Homogeneous photometry for Galactic globular clusters in SDSS passbands.
Vanderbeke J., West M.J., De Propris R., Peng E.W., Blakeslee J.P.,
Jordan A., Cote P., Gregg M., Ferrarese L., Takamiya M., Baes M.
<Mon. Not. R. Astron. Soc., 437, 1725-1733 (2014)>
=2014MNRAS.437.1725V 2014MNRAS.437.1725V
ADC_Keywords: Clusters, globular ; Photometry, SDSS
Keywords: globular clusters: general
Abstract:
We present g' and z' aperture photometry for 96 Galactic globular
clusters, making this the largest homogeneous catalogue of photometry
for these objects in the Sloan Digital Sky Survey (SDSS) filter
system. For a subset of 56 clusters, we also provide photometry in
r' and i'. We carry out comparisons with previous photometry as well
as with the SDSS data set. The data will be useful for a series of
applications in Galactic and extragalactic astrophysics. Future papers
will analyse the colour-metallicity relation, colour-magnitude
diagrams and structural parameters. The compilation of results based
on this data set will be collected in the Galactic Globular Cluster
Catalog (G2C2).
Description:
Observations were carried out between 2003 May 10 and 2012 June 9
using the Cerro Tololo Inter-American Observatory (CTIO) 0.9 and 1m
telescopes with the U.S. Naval Observatory (USNO) g'r'i'z'
filter set.
We provide Tables 2 and 3 from G2C2-I, which listed the aperture
magnitudes within the cluster half-light radii. Table 2 lists
magnitudes based on CTIO data, Table 3 presents magnitudes based on
SDSS data. The listed magnitudes are cleaned for foreground
contamination. The magnitude corrections which were applied are also
listed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 80 96 Photometry (g'r'i'z') based on CTIO data
table3.dat 80 21 Photometry (griz) based on SDSS data (DR9)
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See also:
VII/195 : Globular Clusters in the Milky Way (Harris, 1996)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Globular cluster name
10- 15 F6.3 mag g'mag ?=- SDSS g' magnitude
17- 21 F5.3 mag e_g'mag ?=- rms uncertainty on g'mag
23- 28 F6.3 mag r'mag ?=- SDSS r' magnitude
30- 34 F5.3 mag e_r'mag ?=- rms uncertainty on r'mag
36- 41 F6.3 mag i'mag ?=- SDSS i' magnitude
43- 47 F5.3 mag e_i'mag ?=- rms uncertainty on i'mag
49- 54 F6.3 mag z'mag ?=- SDSS z' magnitude
56- 60 F5.3 mag e_z'mag ?=- rms uncertainty on z'mag
62- 65 F4.2 mag CMDg' ?=- Magnitude correction in g'mag (G1)
67- 70 F4.2 mag CMDr' ?=- Magnitude correction in r'mag (G1)
72- 75 F4.2 mag CMDi' ?=- Magnitude correction in i'mag (G1)
77- 80 F4.2 mag CMDz' ?=- Magnitude correction in z'mag (G1)
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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- 8 A8 --- Name Globular cluster name
10- 15 F6.3 mag gmag ?=- SDSS g magnitude
17- 21 F5.3 mag e_gmag ?=- rms uncertainty on gmag
23- 28 F6.3 mag rmag ?=- SDSS r magnitude
30- 34 F5.3 mag e_rmag ?=- rms uncertainty on rmag
36- 41 F6.3 mag imag ?=- SDSS i magnitude
43- 47 F5.3 mag e_imag ?=- rms uncertainty on imag
49- 54 F6.3 mag zmag ?=- SDSS z magnitude
56- 60 F5.3 mag e_zmag ?=- rms uncertainty on zmag
62- 65 F4.2 mag CMDg ?=- Magnitude correction in gmag (G1)
67- 70 F4.2 mag CMDr ?=- Magnitude correction in rmag (G1)
72- 75 F4.2 mag CMDi ?=- Magnitude correction in imag (G1)
77- 80 F4.2 mag CMDz ?=- Magnitude correction in zmag (G1)
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Global notes:
Note (G1): Magnitude corrections performed based on the CMD cleaning.
See paper for more details.
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Acknowledgements:
Joachim Vanderbeke, joachimvanderbeke(at)gmail.com
(End) J. Vanderbeke [Ghent Univ., Belgium], P. Vannier [CDS] 15-Oct-2014