ASTEP South: A first photometric analysis
The ASTEP project aims at detecting and characterizing transiting planets from Dome C, Antarctica, and qualifying this site for photometry in the visible. The first phase of the project, ASTEP South, is a fixed 10 cm diameter instrument pointing continuously towards the celestial South Pole. Observa...
Published in: | Proceedings of the International Astronomical Union |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Conference Object |
Language: | unknown |
Published: |
Cambridge University Press
|
Subjects: | |
Online Access: | http://hdl.handle.net/1885/71515 https://doi.org/10.1017/S1743921312016924 https://openresearch-repository.anu.edu.au/bitstream/1885/71515/7/01_Crouzet_ASTEP_South%3a_A_first_2012.pdf.jpg |
id |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/71515 |
---|---|
record_format |
openpolar |
spelling |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/71515 2024-01-14T09:59:54+01:00 ASTEP South: A first photometric analysis Crouzet, N. Guillot, T. Mekarnia, D. Szulagyi, J. Abe, L. Agabi, A. Fantei-Caujolle, Y. Goncalves, I. Barbieri, M. Schmider, F.-X. Bayliss, Daniel Zhou, Guyin (George) Beijing, China http://hdl.handle.net/1885/71515 https://doi.org/10.1017/S1743921312016924 https://openresearch-repository.anu.edu.au/bitstream/1885/71515/7/01_Crouzet_ASTEP_South%3a_A_first_2012.pdf.jpg unknown Cambridge University Press International Astronomical Union Symposium 288 1743-9213 http://hdl.handle.net/1885/71515 doi:10.1017/S1743921312016924 https://openresearch-repository.anu.edu.au/bitstream/1885/71515/7/01_Crouzet_ASTEP_South%3a_A_first_2012.pdf.jpg Proceedings IAU Symposium No. 288 http://journals.cambridge.org/action/displayJournal?jid=IAU Keywords: (stars:) binaries: eclipsing methods: data analysis site testing techniques: photometric Conference paper ftanucanberra https://doi.org/10.1017/S1743921312016924 2023-12-15T09:38:40Z The ASTEP project aims at detecting and characterizing transiting planets from Dome C, Antarctica, and qualifying this site for photometry in the visible. The first phase of the project, ASTEP South, is a fixed 10 cm diameter instrument pointing continuously towards the celestial South Pole. Observations were made almost continuously during 4 winters, from 2008 to 2011. The point-to-point RMS of 1-day photometric lightcurves can be explained by a combination of expected statistical noises, dominated by the photon noise up to magnitude 14. This RMS is large, from 2.5 mmag at R = 8 to 6% at R = 14, because of the small size of ASTEP South and the short exposure time (30 s). Statistical noises should be considerably reduced using the large amount of collected data. A 9.9-day period eclipsing binary is detected, with a magnitude R = 9.85. The 2-season lightcurve folded in phase and binned into 1,000 points has a RMS of 1.09 mmag, for an expected photon noise of 0.29 mmag. The use of the 4 seasons of data with a better detrending algorithm should yield a sub-millimagnitude precision for this folded lightcurve. Radial velocity follow-up observations reveal a F-M binary system. The detection of this 9.9-day period system with a small instrument such as ASTEP South and the precision of the folded lightcurve show the quality of Dome C for continuous photometric observations, and its potential for the detection of planets with orbital periods longer than those usually detected from the ground. Conference Object Antarc* Antarctica South pole South pole Australian National University: ANU Digital Collections South Pole Proceedings of the International Astronomical Union 8 S288 226 230 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: (stars:) binaries: eclipsing methods: data analysis site testing techniques: photometric |
spellingShingle |
Keywords: (stars:) binaries: eclipsing methods: data analysis site testing techniques: photometric Crouzet, N. Guillot, T. Mekarnia, D. Szulagyi, J. Abe, L. Agabi, A. Fantei-Caujolle, Y. Goncalves, I. Barbieri, M. Schmider, F.-X. Bayliss, Daniel Zhou, Guyin (George) ASTEP South: A first photometric analysis |
topic_facet |
Keywords: (stars:) binaries: eclipsing methods: data analysis site testing techniques: photometric |
description |
The ASTEP project aims at detecting and characterizing transiting planets from Dome C, Antarctica, and qualifying this site for photometry in the visible. The first phase of the project, ASTEP South, is a fixed 10 cm diameter instrument pointing continuously towards the celestial South Pole. Observations were made almost continuously during 4 winters, from 2008 to 2011. The point-to-point RMS of 1-day photometric lightcurves can be explained by a combination of expected statistical noises, dominated by the photon noise up to magnitude 14. This RMS is large, from 2.5 mmag at R = 8 to 6% at R = 14, because of the small size of ASTEP South and the short exposure time (30 s). Statistical noises should be considerably reduced using the large amount of collected data. A 9.9-day period eclipsing binary is detected, with a magnitude R = 9.85. The 2-season lightcurve folded in phase and binned into 1,000 points has a RMS of 1.09 mmag, for an expected photon noise of 0.29 mmag. The use of the 4 seasons of data with a better detrending algorithm should yield a sub-millimagnitude precision for this folded lightcurve. Radial velocity follow-up observations reveal a F-M binary system. The detection of this 9.9-day period system with a small instrument such as ASTEP South and the precision of the folded lightcurve show the quality of Dome C for continuous photometric observations, and its potential for the detection of planets with orbital periods longer than those usually detected from the ground. |
format |
Conference Object |
author |
Crouzet, N. Guillot, T. Mekarnia, D. Szulagyi, J. Abe, L. Agabi, A. Fantei-Caujolle, Y. Goncalves, I. Barbieri, M. Schmider, F.-X. Bayliss, Daniel Zhou, Guyin (George) |
author_facet |
Crouzet, N. Guillot, T. Mekarnia, D. Szulagyi, J. Abe, L. Agabi, A. Fantei-Caujolle, Y. Goncalves, I. Barbieri, M. Schmider, F.-X. Bayliss, Daniel Zhou, Guyin (George) |
author_sort |
Crouzet, N. |
title |
ASTEP South: A first photometric analysis |
title_short |
ASTEP South: A first photometric analysis |
title_full |
ASTEP South: A first photometric analysis |
title_fullStr |
ASTEP South: A first photometric analysis |
title_full_unstemmed |
ASTEP South: A first photometric analysis |
title_sort |
astep south: a first photometric analysis |
publisher |
Cambridge University Press |
url |
http://hdl.handle.net/1885/71515 https://doi.org/10.1017/S1743921312016924 https://openresearch-repository.anu.edu.au/bitstream/1885/71515/7/01_Crouzet_ASTEP_South%3a_A_first_2012.pdf.jpg |
op_coverage |
Beijing, China |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_source |
Proceedings IAU Symposium No. 288 http://journals.cambridge.org/action/displayJournal?jid=IAU |
op_relation |
International Astronomical Union Symposium 288 1743-9213 http://hdl.handle.net/1885/71515 doi:10.1017/S1743921312016924 https://openresearch-repository.anu.edu.au/bitstream/1885/71515/7/01_Crouzet_ASTEP_South%3a_A_first_2012.pdf.jpg |
op_doi |
https://doi.org/10.1017/S1743921312016924 |
container_title |
Proceedings of the International Astronomical Union |
container_volume |
8 |
container_issue |
S288 |
container_start_page |
226 |
op_container_end_page |
230 |
_version_ |
1788061596714532864 |