Discovery of a new WZ Sagittae-type cataclysmic variable in the Kepler/K2 data

Ridden-Harper, Ryan; Tucker, B.; Garnavich, P.; Rest, A.; Margheim, S.; Shaya, E.; Barensten, G; Hedges, Christina; Gully-Santiago, Michael

doi:10.1093/mnras/stz2923

“…V344 Lyr and V1504 Cyg have been the subjects of multiple studies [253,254]. A new CV was found during the K2 mission, as a variable background star to the F-dwarf EPIC 203830112 [255].…”

Section: Evolved Binariesmentioning

confidence: 99%

Space-Based Photometry of Binary Stars: From Voyager to TESS

Southworth

¹

2021

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Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968. This review traces the binary stars observed and the scientific results obtained from the early days of ultraviolet missions (OAO-2, Voyager, ANS, IUE), through a period of diversification (Hipparcos, WIRE, MOST, BRITE), to the current era of large planetary transit surveys (CoRoT, Kepler, TESS). In this time observations have been obtained of detached, semi-detached and contact binaries containing dwarfs, sub-giants, giants, supergiants, white dwarfs, planets, neutron stars and accretion discs. Recent missions have found a huge variety of objects such as pulsating stars in eclipsing binaries, multi-eclipsers, heartbeat stars and binaries hosting transiting planets. Particular attention is paid to eclipsing binaries, because they are staggeringly useful, and to the NASA Transiting Exoplanet Survey Satellite (TESS) because its huge sky coverage enables a wide range of scientific investigations with unprecedented ease. These results are placed into context, future missions are discussed, and a list of important science goals is presented.

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“…V344 Lyr and V1504 Cyg have been the subjects of multiple studies [253,254]. A new CV was found during the K2 mission, as a variable background star to the F-dwarf EPIC 203830112 [255].…”

Section: Evolved Binariesmentioning

confidence: 99%

Space-Based Photometry Of Binary Stars: From Voyager To TESS

Southworth¹

2021

Preprint

0

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Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968. This review traces the binary stars observed and the scientific results obtained from the early days of ultraviolet missions (OAO-2, Voyager, ANS, IUE), through a period of diversification (Hipparcos, WIRE, MOST, BRITE), to the current era of large planetary transit surveys (CoRoT, Kepler, TESS). In this time observations have been obtained of detached, semi-detached and contact binaries containing dwarfs, sub-giants, giants, supergiants, white dwarfs, planets, neutron stars and accretion discs. Recent missions have found a huge variety of objects such as pulsating stars in eclipsing binaries, multi-eclipsers, heartbeat stars and binaries hosting transiting planets. Particular attention is paid to eclipsing binaries, because they are staggeringly useful, and to the NASA Transiting Exoplanet Survey Satellite (TESS) because its huge sky coverage enables a wide range of scientific investigations with unprecedented ease. These results are placed into context, future missions are discussed, and a list of important science goals is presented.

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“…Alongside providing new insights into SNe, consistent high cadence observations also offer a new parameter space to search for new transients. Ridden-Harper et al (2020) details a program to search the background pixels of the Kepler/K2 mission to identify previously unknown transients observed in high cadence, such as the WZ Sge type dwarf nova presented in Ridden-Harper et al (2019). Such a program could also be possible with TESS which could provide us with a new window into a previously unexplored time domain.…”

Section: Introductionmentioning

confidence: 99%

TESSreduce: transient focused TESS data reduction pipeline

Ridden-Harper¹,

Rest²,

Hounsell³

et al. 2021

Preprint

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Since its launch, TESS has provided high cadence observations for objects across the sky. Although high cadence TESS observations provide a unique possibility to study the rapid time evolution of numerous objects, artifacts in the data make it particularly challenging to use in studying transients. Furthermore, the broadband red filter of TESS, makes calibrating it to physical flux units, or magnitudes, challenging. Here we present TESSreduce an open-source, and user-friendly Python package which is built to lower the barrier to entry for transient science with TESS. In a few commands users can produce a reliable TESS light curve, accounting for systematic biases that are present in other models (such as instrument drift and the varied TESS background) and calculate a zeropoint to percent level precision. With this package anyone can use TESS for science, such as studying rapid transients and constraining progenitors of supernovae.

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Discovery of a new WZ Sagittae-type cataclysmic variable in the Kepler/K2 data

Cited by 10 publications

References 35 publications

Space-Based Photometry of Binary Stars: From Voyager to TESS

Space-Based Photometry of Binary Stars: From Voyager to TESS

Space-Based Photometry Of Binary Stars: From Voyager To TESS

TESSreduce: transient focused TESS data reduction pipeline

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