Transiting planet candidates with ASTEP 400 at Dome C, Antarctica
ASTEP 400, the main instrument of the ASTEP (Antarctica Search for Transiting ExoPlanets) programme, is a 40 cm telescope, designed to withstand the harsh conditions in Antarctica, achieving a photometric accuracy of a fraction of millimagnitude on hourly time-scales for planet-hosting southern brig...
Published in: | Monthly Notices of the Royal Astronomical Society |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Oxford University Press
2016
|
Subjects: | |
Online Access: | https://research.usq.edu.au/item/q6x53/transiting-planet-candidates-with-astep-400-at-dome-c-antarctica https://research.usq.edu.au/download/c97aa17c17b265986d2f522d5415079d9010cfef72ac1f21c776536e3975a6fa/3467081/stw1934.pdf https://doi.org/10.1093/mnras/stw1934 |
id |
ftusqland:oai:research.usq.edu.au:q6x53 |
---|---|
record_format |
openpolar |
spelling |
ftusqland:oai:research.usq.edu.au:q6x53 2023-06-11T04:04:19+02:00 Transiting planet candidates with ASTEP 400 at Dome C, Antarctica Mekarnia, D. Guillot, T. Rivet, J. -P. Schmider, F. -X. Abe, L. Goncalves, I. Agabi, A. Crouzet, N. Fruth, T. Barbieri, M. Bayliss, D. D. R. Zhou, G. Aristidi, E. Szulagyi, J. Daban, J. -B. Fantei-Caujolle, Y. Gouvret, C. Erikson, A. Rauer, H. Bouchy, F. Gerakis, J. Bouchez, G. 2016 application/pdf https://research.usq.edu.au/item/q6x53/transiting-planet-candidates-with-astep-400-at-dome-c-antarctica https://research.usq.edu.au/download/c97aa17c17b265986d2f522d5415079d9010cfef72ac1f21c776536e3975a6fa/3467081/stw1934.pdf https://doi.org/10.1093/mnras/stw1934 unknown Oxford University Press https://research.usq.edu.au/download/c97aa17c17b265986d2f522d5415079d9010cfef72ac1f21c776536e3975a6fa/3467081/stw1934.pdf https://doi.org/10.1093/mnras/stw1934 Mekarnia, D., Guillot, T., Rivet, J. -P., Schmider, F. -X., Abe, L., Goncalves, I., Agabi, A., Crouzet, N., Fruth, T., Barbieri, M., Bayliss, D. D. R., Zhou, G., Aristidi, E., Szulagyi, J., Daban, J. -B., Fantei-Caujolle, Y., Gouvret, C., Erikson, A., Rauer, H., ., Bouchez, G. 2016. "Transiting planet candidates with ASTEP 400 at Dome C, Antarctica." Monthly Notices of the Royal Astronomical Society. 463 (1), pp. 45-62. https://doi.org/10.1093/mnras/stw1934 instrumentation: photometers methods: data analysis methods: observational planetary systems article PeerReviewed 2016 ftusqland https://doi.org/10.1093/mnras/stw1934 2023-05-15T22:33:22Z ASTEP 400, the main instrument of the ASTEP (Antarctica Search for Transiting ExoPlanets) programme, is a 40 cm telescope, designed to withstand the harsh conditions in Antarctica, achieving a photometric accuracy of a fraction of millimagnitude on hourly time-scales for planet-hosting southern bright (R ∼ 12 mag) stars. We review the performances of this instrument, describe its operating conditions, and present results from the analysis of observations obtained during its first three years (2010-2012) of operation, before its repatriation in 2014. During this time, we observed a total of 22 stellar fields (1° × 1° field of view). Each field, in which we measured stars up to magnitude R = 18 mag, was observed continuously during ∼7 to ∼30 d. More than 200 000 frames were recorded and 310 000 stars processed, using an implementation of the optimal image subtraction photometry algorithm. We found 43 planetary transit candidates. 20 of these candidates were observed using spectroscopic follow-ups including four targets classified as good planet candidates. Our results demonstrate that accurate near-continuous photometric observations are achievable from the Concordia station at Dome C in Antarctica, even if we were not able to reach the nominal photometric precision of the instrument. We conducted a correlation analysis between the rms noise and a large number of external parameters and found that source of the ∼1 mmag correlated noise is not obvious and does not depend on a single parameter. However, our analysis provided some hints and guidance to increase the photometric accuracy of the instrument. These improvements should equip any future telescope operating in Antarctica. Article in Journal/Newspaper Antarc* Antarctica University of Southern Queensland: USQ ePrints Concordia Station ENVELOPE(123.333,123.333,-75.100,-75.100) Monthly Notices of the Royal Astronomical Society 463 1 45 62 |
institution |
Open Polar |
collection |
University of Southern Queensland: USQ ePrints |
op_collection_id |
ftusqland |
language |
unknown |
topic |
instrumentation: photometers methods: data analysis methods: observational planetary systems |
spellingShingle |
instrumentation: photometers methods: data analysis methods: observational planetary systems Mekarnia, D. Guillot, T. Rivet, J. -P. Schmider, F. -X. Abe, L. Goncalves, I. Agabi, A. Crouzet, N. Fruth, T. Barbieri, M. Bayliss, D. D. R. Zhou, G. Aristidi, E. Szulagyi, J. Daban, J. -B. Fantei-Caujolle, Y. Gouvret, C. Erikson, A. Rauer, H. Bouchy, F. Gerakis, J. Bouchez, G. Transiting planet candidates with ASTEP 400 at Dome C, Antarctica |
topic_facet |
instrumentation: photometers methods: data analysis methods: observational planetary systems |
description |
ASTEP 400, the main instrument of the ASTEP (Antarctica Search for Transiting ExoPlanets) programme, is a 40 cm telescope, designed to withstand the harsh conditions in Antarctica, achieving a photometric accuracy of a fraction of millimagnitude on hourly time-scales for planet-hosting southern bright (R ∼ 12 mag) stars. We review the performances of this instrument, describe its operating conditions, and present results from the analysis of observations obtained during its first three years (2010-2012) of operation, before its repatriation in 2014. During this time, we observed a total of 22 stellar fields (1° × 1° field of view). Each field, in which we measured stars up to magnitude R = 18 mag, was observed continuously during ∼7 to ∼30 d. More than 200 000 frames were recorded and 310 000 stars processed, using an implementation of the optimal image subtraction photometry algorithm. We found 43 planetary transit candidates. 20 of these candidates were observed using spectroscopic follow-ups including four targets classified as good planet candidates. Our results demonstrate that accurate near-continuous photometric observations are achievable from the Concordia station at Dome C in Antarctica, even if we were not able to reach the nominal photometric precision of the instrument. We conducted a correlation analysis between the rms noise and a large number of external parameters and found that source of the ∼1 mmag correlated noise is not obvious and does not depend on a single parameter. However, our analysis provided some hints and guidance to increase the photometric accuracy of the instrument. These improvements should equip any future telescope operating in Antarctica. |
format |
Article in Journal/Newspaper |
author |
Mekarnia, D. Guillot, T. Rivet, J. -P. Schmider, F. -X. Abe, L. Goncalves, I. Agabi, A. Crouzet, N. Fruth, T. Barbieri, M. Bayliss, D. D. R. Zhou, G. Aristidi, E. Szulagyi, J. Daban, J. -B. Fantei-Caujolle, Y. Gouvret, C. Erikson, A. Rauer, H. Bouchy, F. Gerakis, J. Bouchez, G. |
author_facet |
Mekarnia, D. Guillot, T. Rivet, J. -P. Schmider, F. -X. Abe, L. Goncalves, I. Agabi, A. Crouzet, N. Fruth, T. Barbieri, M. Bayliss, D. D. R. Zhou, G. Aristidi, E. Szulagyi, J. Daban, J. -B. Fantei-Caujolle, Y. Gouvret, C. Erikson, A. Rauer, H. Bouchy, F. Gerakis, J. Bouchez, G. |
author_sort |
Mekarnia, D. |
title |
Transiting planet candidates with ASTEP 400 at Dome C, Antarctica |
title_short |
Transiting planet candidates with ASTEP 400 at Dome C, Antarctica |
title_full |
Transiting planet candidates with ASTEP 400 at Dome C, Antarctica |
title_fullStr |
Transiting planet candidates with ASTEP 400 at Dome C, Antarctica |
title_full_unstemmed |
Transiting planet candidates with ASTEP 400 at Dome C, Antarctica |
title_sort |
transiting planet candidates with astep 400 at dome c, antarctica |
publisher |
Oxford University Press |
publishDate |
2016 |
url |
https://research.usq.edu.au/item/q6x53/transiting-planet-candidates-with-astep-400-at-dome-c-antarctica https://research.usq.edu.au/download/c97aa17c17b265986d2f522d5415079d9010cfef72ac1f21c776536e3975a6fa/3467081/stw1934.pdf https://doi.org/10.1093/mnras/stw1934 |
long_lat |
ENVELOPE(123.333,123.333,-75.100,-75.100) |
geographic |
Concordia Station |
geographic_facet |
Concordia Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://research.usq.edu.au/download/c97aa17c17b265986d2f522d5415079d9010cfef72ac1f21c776536e3975a6fa/3467081/stw1934.pdf https://doi.org/10.1093/mnras/stw1934 Mekarnia, D., Guillot, T., Rivet, J. -P., Schmider, F. -X., Abe, L., Goncalves, I., Agabi, A., Crouzet, N., Fruth, T., Barbieri, M., Bayliss, D. D. R., Zhou, G., Aristidi, E., Szulagyi, J., Daban, J. -B., Fantei-Caujolle, Y., Gouvret, C., Erikson, A., Rauer, H., ., Bouchez, G. 2016. "Transiting planet candidates with ASTEP 400 at Dome C, Antarctica." Monthly Notices of the Royal Astronomical Society. 463 (1), pp. 45-62. https://doi.org/10.1093/mnras/stw1934 |
op_doi |
https://doi.org/10.1093/mnras/stw1934 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
463 |
container_issue |
1 |
container_start_page |
45 |
op_container_end_page |
62 |
_version_ |
1768386925077463040 |