J/MNRAS/479/111 AST3-1 Point Source Catalogue (Ma+, 2018)
The first release of the AST3-1 Point Source Catalogue from Dome A, Antarctica.
Ma B., Shang Z., Hu Y., Hu K., Liu Q., Ashley M.C.B., Cui X., Du F.,
Fan D., Feng L., Huang F., Gu B., He B., Ji T., Li X., Li Z., Liu H.,
Tian Q., Tao C., Wang D., Wang L., Wang S., Wang X., Wei P., Wu J., Xu L.,
Yang S., Yang M., Yang Y., Yu C., Yuan X., Zhou H., Zhang H., Zhang X.,
Zhang Y., Zhao C., Zhou J., Zhu Z.-H.
<Mon. Not. R. Astron. Soc., 479, 111-120 (2018)>
=2018MNRAS.479..111M 2018MNRAS.479..111M (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Photometry
Keywords: methods: data analysis - methods: observational -
techniques: image processing - techniques: photometric - catalogues -
surveys
Abstract:
The three Antarctic Survey Telescopes (AST3) aim to carry out
time-domain imaging survey at Dome A, Antarctica. The first of the
three telescopes (AST3-1) was successfully deployed in 2012 January.
AST3-1 is a 500mm aperture modified Schmidt telescope with a 680mm
diameter primary mirror. AST3-1 is equipped with a SDSS i filter and a
10kx10k frame transfer CCD camera, reduced to 5kx10k by electronic
shuttering, resulting in a 4.3deg2 field of view. To verify the
capability of AST3-1 for a variety of science goals, extensive
commissioning was carried out between 2012 March and May. The
commissioning included a survey covering 2000deg2 as well as the
entire Large and Small Magellanic Clouds. Frequent repeated images
were made of the centre of the Large Magellanic Cloud, a selected
exoplanet transit field, and fields including some Wolf-Rayet stars.
Here, we present the data reduction and photometric measurements of
the point sources observed by AST3-1. We have achieved a survey depth
of 19.3mag in 60s exposures with 5mmag precision in the light
curves of bright stars. The facility achieves sub-mmag photometric
precision under stable survey conditions, approaching its photon noise
limit. These results demonstrate that AST3-1 at Dome A is
extraordinarily competitive in time-domain astronomy, including both
quick searches for faint transients and the detection of tiny transit
signals.
Description:
We present the first data release, DR1, of the photometric data from
the AST3-1 commissioning surveys. DR1 consists of 14 000 scientific
images, 16 million sources bright than i∼19 with photometry and
astrometry, and 2 million light curves.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lmc_smc.dat 69 3396185 AST3-1 DR1 LMC/SCM sources
snsurvey.dat 72 12768876 AST3-1 DR1 SN sources
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See also:
https://nadc.china-vo.org/data : AST3-1 DR1 home page
Byte-by-byte Description of file: lmc_smc.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- ID [30000001/33396185] Source index
10- 30 F21.17 deg RAdeg ?=- Right ascension (J2000)
32- 51 F20.16 deg DEdeg ?=- Declination (J2000)
53- 59 F7.4 mag imag ?=- Mean i magnitude
61- 66 F6.4 mag e_imag ?=- Standard deviation of i magnitude
68- 69 I2 --- o_imag ?=- Number of observations
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Byte-by-byte Description of file: snsurvey.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- ID [10000001/22768934] Source index
10- 33 F24.20 deg RAdeg ?=- Right ascension (J2000)
35- 54 F20.16 deg DEdeg ?=- Declination (J2000)
56- 62 F7.4 mag imag ?=- Mean i magnitude
64- 69 F6.4 mag e_imag ?=- Standard deviation of i magnitude
71- 72 I2 --- o_imag ?=- Number of observations
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History:
Copied at https://nadc.china-vo.org/data/
(End) Patricia Vannier [CDS] 24-Feb-2022