eleanor: An Open-source Tool for Extracting Light Curves from the <i>TESS</i> Full-frame Images

Feinstein, Adina D.; Montet, Benjamin T.; Foreman-Mackey, Daniel; Bedell, Megan; Saunders, Nicholas; Bean, Jacob L.; Christiansen, Jessie L.; Hedges, Christina; Luger, Rodrigo; Scolnic, Dan; Cardoso, José Vinícius de Miranda

doi:10.1088/1538-3873/ab291c

Cited by 266 publications

(231 citation statements)

References 55 publications

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“…At present, the most advanced pipeline aimed at the extraction of any kind of light curve from FFIs is eleanor (Feinstein et al 2019). In this section we compare the quality of our photometry with that obtained by eleanor, highlighting the importance of neighbour subtraction when we consider crowded environments.…”

Section: Comparison With Other Pipelinesmentioning

confidence: 99%

A PSF-based Approach to TESS High quality data Of Stellar clusters (PATHOS) – I. Search for exoplanets and variable stars in the field of 47 Tuc

Nardiello

Borsato

Piotto

et al. 2019

Monthly Notices of the Royal Astronomical Society

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The TESS mission will survey ∼85 % of the sky, giving us the opportunity of extracting high-precision light curves of millions of stars, including stellar cluster members. In this work, we present our project "A PSF-based Approach to TESS High quality data Of Stellar clusters" (PATHOS), aimed at searching and characterise candidate exoplanets and variable stars in stellar clusters using our innovative method for the extraction of high-precision light curves of stars located in crowded environments. Our technique of light-curve extraction involves the use of empirical Point Spread Functions (PSFs), an input catalogue and neighbour-subtraction. The PSF-based approach allows us to minimise the dilution effects in crowded environments and to extract high-precision photometry for stars in the faint regime (G > 13).For this pilot project, we extracted, corrected, and analysed the light curves of 16641 stars located in a dense region centred on the globular cluster 47 Tuc. We were able to reach the TESS magnitude T ∼ 16.5 with a photometric precision of ∼ 1% on the 6.5-hour timescale; in the bright regime we were able to detect transits with depth of ∼34 parts per million. We searched for variables and candidate transiting exoplanets. Our pipeline detected one planetary candidate orbiting a main sequence star in the Galactic field. We analysed the period-luminosity distribution for red-giant stars of 47 Tuc and the eclipsing binaries in the field. Light curves are uploaded on the Mikulski Archive for Space Telescopes under the project PATHOS.

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Section: Comparison With Other Pipelinesmentioning

confidence: 99%

A PSF-based Approach to TESS High quality data Of Stellar clusters (PATHOS) – I. Search for exoplanets and variable stars in the field of 47 Tuc

Nardiello

Borsato

Piotto

et al. 2019

Monthly Notices of the Royal Astronomical Society

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“…We produced a higher-quality lightcurve using the pipeline (Feinstein et al 2019) which we use for the rest of this work. This aperture includes TIC-231005576 ( = 14.9277) 3.25" away at a position angle of 126.93 • East of North.…”

Section: Single-transit Event Detectionmentioning

confidence: 99%

A long-period (P = 61.8 d) M5V dwarf eclipsing a Sun-like star from TESS and NGTS

Gill

Cooke

Nielsen

et al. 2020

Monthly Notices of the Royal Astronomical Society

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The Transiting Exoplanet Survey Satellite has produced a large number of single-transit event candidates which are being monitored by the Next Generation Transit Survey (NGTS). We observed a second epoch for the TIC-231005575 system (Tmag = 12.06 and $T_{\rm eff} = 5500 \pm 85\, \mathrm{ K}$) with NGTS and a third epoch with Las Cumbres Observatory’s telescope in South Africa to constrain the orbital period ($P = 61.777\, \mathrm{ d}$). Subsequent radial velocity measurements with CORALIE revealed the transiting object has a mass of M2 = 0.128 ± 0.003 M⊙, indicating the system is a G-M binary. The radius of the secondary is R2 = 0.154 ± 0.008 R⊙ and is consistent with mesa models of stellar evolution to better than 1σ.

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“…We used the ELEANOR software package (v0.2.4; Feinstein et al 2019) to download and background-subtract a 13 × 13 (4.5 × 4.5 arcmin) Target Pixel File centred on J0552−0044 ( Fig. 4) suitable for aperture photometry.…”

Section: Transiting Exoplanet Survey Satellite (Tess)mentioning

confidence: 99%

THOR 42: A touchstone ∼24 Myr-old eclipsing binary spanning the fully-convective boundary

Murphy

Lawson

Onken

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We present the characterization of CRTS J055255.7−004426 (=THOR 42), a young eclipsing binary comprising two pre-main sequence M dwarfs (combined spectral type M3.5). This nearby (103 pc), short-period (0.859 d) system was recently proposed as a member of the ∼24 Myr-old 32 Orionis Moving Group. Using ground-and space-based photometry in combination with medium-and high-resolution spectroscopy, we model the light and radial velocity curves to derive precise system parameters. The resulting component masses and radii are 0.497 ± 0.005 and 0.205 ± 0.002 M , and 0.659 ± 0.003 and 0.424 ± 0.002 R , respectively. With mass and radius uncertainties of ∼1 per cent and ∼0.5 per cent, respectively, THOR 42 is one of the most precisely characterized pre-main sequence eclipsing binaries known. Its systemic velocity, parallax, proper motion, colour-magnitude diagram placement and enlarged radii are all consistent with membership in the 32 Ori Group. The system provides a unique opportunity to test pre-main sequence evolutionary models at an age and mass range not well constrained by observation. From the radius and mass measurements we derive ages of 22-26 Myr using standard (non-magnetic) models, in excellent agreement with the age of the group. However, none of the models can simultaneously reproduce the observed mass, radius, temperature and luminosity of the coeval components. In particular, their H-R diagram ages are 2-4 times younger and we infer masses ∼50 per cent smaller than the dynamical values.

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eleanor: An Open-source Tool for Extracting Light Curves from the TESS Full-frame Images

Cited by 266 publications

References 55 publications

A PSF-based Approach to TESS High quality data Of Stellar clusters (PATHOS) – I. Search for exoplanets and variable stars in the field of 47 Tuc

A PSF-based Approach to TESS High quality data Of Stellar clusters (PATHOS) – I. Search for exoplanets and variable stars in the field of 47 Tuc

A long-period (P = 61.8 d) M5V dwarf eclipsing a Sun-like star from TESS and NGTS

THOR 42: A touchstone ∼24 Myr-old eclipsing binary spanning the fully-convective boundary

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