2019A&A...625A.145K


Query : 2019A&A...625A.145K

2019A&A...625A.145K - Astronomy and Astrophysics, volume 625A, 145-145 (2019/5-1)

Transit-period search from single-event space-based data: the role of wide-field surveys.

KOVACS G.

Abstract (from CDS):

We investigate the optimization of dataset weighting in searching for the orbital period of transiting planets when high-precision space-based data with a single transit event are combined with (relatively) low-precision ground-based (wide-field) data. The optimization stems from the lack of multiple events in the high-precision data and the likely presence of such events in the low-precision data. With noise minimization, we combined two types of frequency spectra: (i) spectra that use two fixed transit parameters (moment of the center of the transit and duration of the event) derived from the space data alone; (ii) spectra that result from the traditional weighted box signal search with optimized transit parameters for each trial period. We used many mock signals to test the detection power of the method. Marginal or no detections in the ground-based data may lead to secure detections in the combined data with the above weighting. Depending on the coverage and quality of the ground-based data, transit depths of ∼0.05% and periods up to ∼100 days are accessible by the suggested optimum combination of the data.

Abstract Copyright: © ESO 2019

Journal keyword(s): planets and satellites: detection - methods: data analysis

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 10069 * 01 37 25.0332798696 -45 40 40.374717456   9.74 9.30     F6IV/V 184 1
2 BD+10 1799 * 08 26 27.8490900672 +10 04 49.334175156   9.42 8.92     F8 32 0
3 HATS-17b Pl 12 48 45.5453594560 -47 36 49.287804071           ~ 20 0
4 SIPS J1611-2315 PM* 16 11 43.9771427808 -23 15 43.994515320           M4.5 4 0
5 HD 147506 * 16 20 36.3576063720 +41 02 53.106772488   9.15 8.69     F8V 151 2
6 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 254 2
7 HD 202678 * 21 19 47.9065883424 -58 08 55.991602356   10.98 10.47     G1/3(V) 21 1
8 BD+41 4831 * 23 39 05.8102996968 +42 27 57.505293900   10.88 10.47     F8V 74 1

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2022.05.24-11:18:55

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