KeplerGO/lightkurve: Lightkurve v1.0b29

Barentsen, Geert; Hedges, Christina; Vinícius, Zé; Saunders, Nicholas A.; gully,; Hall, Oliver J.; Sagear, Sheila; KenMighell,; Barclay, Thomas; Bell, Keaton J.; Zhang, Johnny; Turtelboom, Emma V.; Berta-Thompson, Zachory K.; Williams, Peter; Lerma, Jose A; Vincello, Brennan; Sundaram, Anand

doi:10.5281/zenodo.2565212

Cited by 26 publications

(21 citation statements)

References 0 publications

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“…Facilities: TESS (Ricker et al 2015), Gaia (Gaia Collaboration et al 2016), SIMBAD (Wenger et al 2000), VSX Software: fitsh (Pál 2012), lightkurve (Barentsen et al 2019), Period04 (Lenz & Breger 2005), gnuplot, mwdust (Bovy et al 2016), galpy (Bovy 2015), echelle toggler (Joyce 2021), Astropy (Astropy Collaboration et al 2013…”

Section: Discussionmentioning

confidence: 99%

“…However, their initial release utilized an older pipeline that was developed for solar-like oscillators observed by the Kepler mission and hence does not handle large-amplitude variables well. We investigated both sets of light curves and decided to create our own photometry based on custom pixel apertures with the lightkurve tool, and, in particular, its interactive pixel selection option (Barentsen et al 2019). This approach provided full control over selecting the pixel apertures, and yielded good-quality light curves for use in the frequency analysis.…”

Section: -Minute Targetsmentioning

confidence: 99%

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First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances

Molnár,

Bódi,

Pál

et al. 2021

Preprint

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The TESS space telescope is collecting continuous, high-precision optical photometry of stars throughout the sky, including thousands of RR Lyrae stars. In this paper, we present results for an initial sample of 118 nearby RR Lyrae stars observed in TESS Sectors 1 and 2. We use differentialimage photometry to generate light curves and analyse their mode content and modulation properties. We combine accurate light curve parameters from TESS with parallax and color information from the

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Section: Discussionmentioning

confidence: 99%

Section: -Minute Targetsmentioning

confidence: 99%

First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances

Molnár,

Bódi,

Pál

et al. 2021

Preprint

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“…We downloaded the Presearch Data Conditioning Simple Aperture Photometry (PDCSAP) light curve from the Mikulski Archive for Space Telescopes (MAST 1 ) using the lightkurve package (Lightkurve Collaboration et al 2018;Barentsen et al 2019). Combining the datasets of two sectors, we conducted an independent transit search by utilizing the Transit Least Squares (TLS; Hippke & Heller 2019) algorithm, which is an advanced version of Box Least Square (BLS; Kovács et al 2002), after smoothing the full light curve with a median filter.…”

Section: Observationsmentioning

confidence: 99%

TOI-530b: a giant planet transiting an M-dwarf detected by TESS

Gan¹,

Lin²,

Wang³

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We report the discovery of TOI-530b, a transiting Saturn-like planet around an M0.5V dwarf, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located at a distance of 147.7 ± 0.6 pc with a radius of R* = 0.54 ± 0.03 R⊙ and a mass of M* = 0.53 ± 0.02 M⊙. We verify the planetary nature of the transit signals by combining ground-based multi-wavelength photometry, high resolution spectroscopy from SPIRou as well as high-angular-resolution imaging. With V = 15.4 mag, TOI-530b is orbiting one of the faintest stars accessible by ground-based spectroscopy. Our model reveals that TOI-530b has a radius of 0.83 ± 0.05 RJ and a mass of 0.37 ± 0.08 MJ on a 6.39-d orbit. TOI-530b is the sixth transiting giant planet hosted by an M-type star, which is predicted to be infrequent according to core accretion theory, making it a valuable object to further study the formation and migration history of similar planets. Furthermore, we identify a potential dearth of hot massive giant planets around M dwarfs with separation distance smaller than 0.1 AU and planet-to-star mass ratio between 2 × 10−3 and 10−2. We also find a possible correlation between hot giant planet formation and the metallicity of its parent M dwarf. We discuss the potential formation channel of such systems.

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“…2 We downloaded the Presearch Data Conditioning Simple Aperture Photometry (PDCSAP) light curve from the Mikulski Archive for Space Telescopes (MAST 3 ). After removing all measurements flagged for quality issues in SPOC to improve the precision, we applied the built-in routines of the lightkurve package (Lightkurve Collaboration 2018; Barentsen et al 2019) to normalize the data and clip outliers above a +5σ limit. These additional processing steps removed 904 and 802 points (4.4 and 4.6 per cent), with 19 575 and 16 744 measurements left for each sector.…”

Section: Tessmentioning

confidence: 99%

HD 183579b: a warm sub-Neptune transiting a solar twin detected by TESS

Gan

Bedell²,

Wang

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We report the discovery and characterization of a transiting warm sub-Neptune planet around the nearby bright (V = 8.75 mag, K = 7.15 mag) solar twin HD 183579, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located 56.8 ± 0.1 pc away with a radius of R* = 0.97 ± 0.02 R⊙ and a mass of M* = 1.03 ± 0.05 M⊙. We confirm the planetary nature by combining space and ground-based photometry, spectroscopy, and imaging. We find that HD 183579b (TOI-1055b) has a radius of Rp = 3.53 ± 0.13 R⊕ on a 17.47 day orbit with a mass of Mp = 11.2 ± 5.4 M⊕ (3σ mass upper limit of 27.4 M⊕). HD 183579b is the fifth brightest known sub-Neptune planet system in the sky, making it an excellent target for future studies of the interior structure and atmospheric properties. By performing a line-by-line differential analysis using the high resolution and signal-to-noise ratio HARPS spectra, we find that HD 183579 joins the typical solar twin sample, without a statistically significant refractory element depletion.

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KeplerGO/lightkurve: Lightkurve v1.0b29

Cited by 26 publications

References 0 publications

First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances

First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances

TOI-530b: a giant planet transiting an M-dwarf detected by TESS

HD 183579b: a warm sub-Neptune transiting a solar twin detected by TESS

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