A box-fitting algorithm in the search for periodic transits

Kovács, G.; Zucker, S.; Mazeh, T.

doi:10.1051/0004-6361:20020802

Cited by 1,119 publications

(1,194 citation statements)

References 15 publications

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“…Identified binaries can be analysed using the DEBIL/MECI programs (Devor 2005 andDevor &Charbonneau 2006). Transit-like events can be found using the BLS (Kovács et al 2002) and Matched Filter algorithms (For more details on the lightcurve analysis see Eigüller 2006 andEislöffel et al 2007). …”

Section: Discussionmentioning

confidence: 99%

TEST The Tautenburg Exoplanet Search Telescope

Eigmüller

Eislöffel

2008

Proc. IAU

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Abstract. The Tautenburg Exoplanet Search Telescope (TEST) is a robotic telescope system. The telescope uses a folded Schmidt Camera with a 300mm main mirror. The focal length is 940mm and it gives a 2.2 • × 2.2 • field of view. Dome, mount, and CCD cameras are controlled by a software bundle made by Software Bisque. The automation of the telescope includes selection of the night observing program from a given framework, taking darks and skyflats, field identification, guiding, data taking, and archiving. For the search for transiting exoplanets and variable stars an automated psf photometry based on IRAF and a lightcurve analysis based on ESO-Midas are conducted. The images and the results are managed using a PostgreSQL database.

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Section: Discussionmentioning

confidence: 99%

TEST The Tautenburg Exoplanet Search Telescope

Eigmüller

Eislöffel

2008

Proc. IAU

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“…We searched the processed long-cadence light curves in K2 Campaign 3 for planet candidates using a box-fitting leastsquares routine (BLS: Kovács et al 2002;Jenkins et al 2010). We improved the efficiency of the original BLS by implementing the optimal frequency sampling described in Ofir (2014).…”

Section: K2 Photometrymentioning

confidence: 99%

THEK2-ESPRINT PROJECT III: A CLOSE-IN SUPER-EARTH AROUND A METAL-RICH MID-M DWARF

Hirano

Fukui

Mann

et al. 2016

ApJ

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We validate a R R 2.32 0.24 p =  Å planet on a close-in orbit (P=2.260455±0.000041 days) around K2-28 (EPIC206318379), a metal-rich M4-type dwarf in the Campaign 3 field of the K2 mission. Our follow-up observations included multi-band transit observations from the optical to the near-infrared, low-resolution spectroscopy, and high-resolution adaptive optics (AO) imaging. We perform a global fit to all of the observed transits using a Gaussian process-based method and show that the transit depths in all of the passbands adopted for the ground-based transit follow-ups (r z J H K , , , ,¢ ) are within ∼2σ of the K2 value. Based on a model of the background stellar population and the absence of nearby sources in our AO imaging, we estimate the probability that a background eclipsing binary could cause a false positive to be <2×10 −5 . We also show that K2-28 cannot have a physically associated companion of stellar type later than M4, based on the measurement of almost identical transit depths in multiple passbands. There is a low probability for an M4 dwarf companion ( 0.072 0.04 0.02 » -+), but even if this were the case, the size of K2-28b falls within the planetary regime. K2-28b has the same radius (within 1σ) and experiences irradiation from its host star similar to the well-studied GJ1214b. Given the relative brightness of K2-28 in the near-infrared (m 14.85 Kep = mag and m H =11.03 mag) and relatively deep transit (0.6%-0.7%), a comparison between the atmospheric properties of these two planets with future observations would be especially interesting.

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“…A transit search was performed, within a period range of 0.5 -10 days, using the BLS transit detection algorithm (Kovács et al, 2002). From an initial study including 82,863 light curves from HI-1A, 952 potential candidates were detected with a Signal Detection Efficiency (SDE) of greater than 9.…”

Section: Transit Analysis and Resultsmentioning

confidence: 99%

New Binary and Exoplanet Candidates from STEREO Light Curves

Whittaker

Sangaralingam²,

Stevens³

2011

Proc. IAU

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Abstract. The Heliospheric Imagers (HI) onboard the STEREO satellites are observing an abundance of background stars as they follow their respective Sun-centered orbits. These are wide-angled CCD cameras with a 20 • ×20 • field of view, directed ∼14 • from the solar disk. These imagers monitor 20% of the sky over one year, providing light curves for over 500,000 stars down to 12th magnitude and brighter than 7th. We are currently analysing the photometric data from the HI-1 cameras, obtained since March 2007. Following a standard data reduction of the raw photometric images, the resultant light curves underwent a sequence of detrending procedures to minimize systematics in the data, which can contribute to red noise. A transit search was performed using the BLS algorithm, which is sensitive to the box-like shape associated with planetary transits. The resulting candidates were subjected to a number of false-alarm tests to determine the most promising candidates and these were investigated further, visually and using available catalogue data. Possible new exoplanet and binary candidates will now be submitted for follow-up photometric and spectroscopic observations to confirm their nature.

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A box-fitting algorithm in the search for periodic transits

Cited by 1,119 publications

References 15 publications

TEST The Tautenburg Exoplanet Search Telescope

TEST The Tautenburg Exoplanet Search Telescope

THEK2-ESPRINT PROJECT III: A CLOSE-IN SUPER-EARTH AROUND A METAL-RICH MID-M DWARF

New Binary and Exoplanet Candidates from STEREO Light Curves

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