J/ApJS/279/20 COSMIC-L. LMC gri photometry (Franco+, 2025)
COSMIC-L: A Photometric Catalog of Observed Stars in the Large Magellanic Cloud.
Franco A., Nucita A.A., De Paolis F., Strafella F.
<Astrophys. J. Suppl. Ser. 279, 20 (2025)>
=2025ApJS..279...20F 2025ApJS..279...20F (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Magellanic Clouds ; Photometry ; Optical ; Stars, normal
Keywords: Magellanic Clouds - Catalogs - Photometry
Abstract:
The Magellanic Clouds are two nearby dwarf irregular galaxies, the
study of which can help us in understanding galaxy and stellar
evolution. In particular, the Large Magellanic Cloud, the larger one,
contains approximately 30 billion stars at various evolutionary
stages. In this work, we present a Sloan Digital Sky Survey gri-band
photometric analysis based on multiple images acquired with the Dark
Energy Camera, installed on the Blanco telescope at Cerro Tololo
Inter- American Observatory (Chile). We performed a full image
analysis and photometric calibration, resulting in a photometric
catalog named COSMIC-L, consisting of 57997665 stars, of which
18676294 contain estimates for all three gri magnitudes, resulting
in a completeness magnitude of ∼21 and a limiting magnitude of ∼22
in all three bands.
Description:
We have performed a comprehensive analysis of the LMC region by using
observations acquired by DECam in the gri filters, producing a deep
photometric catalogue which includes 57997665 sources.
If you consider to use the information provided by this catalog,
please cite Franco, A. et al. 2025, ApJS, 279, 20 and the correlated
work Franco, A. et al. 2025, ApJS, 277, 33.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
cosmicl.dat 225 57997665 COSMIC-L catalog
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Byte-by-byte Description of file: cosmicl.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- COSMIC-L COSMIC-L source ID (COSMICL-NNNNNNNN)
18- 34 F17.14 deg RAdeg Right ascension (J2000)
36- 53 F18.14 deg DEdeg Declination (J2000)
55- 76 E22.20 deg e_RAdeg Right ascension uncertainty
78- 99 E22.20 deg e_DEdeg ? Declination uncertainty
101-118 F18.15 mag gmag ? g-band magnitude (SDSS g)
120-142 F23.20 mag e_gmag ? g-band magnitude uncertainty (SDSS g)
144-161 F18.15 mag rmag ? r-band magnitude (SDSS r)
163-183 F21.19 mag e_rmag ? r-band magnitude uncertainty (SDSS r)
185-202 F18.15 mag imag ? i-band magnitude (SDSS i)
204-225 F22.20 mag e_imag ? i-band magnitude uncertainty (SDSS i)
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Acknowledgements:
Antonio Franco, antonio.franco(at)le.infn.it
(End) Patricia Vannier [CDS] 15-Jul-2025