Pierre Maxted's Outputs (23)

TIC 278825952: a triply eclipsing hierarchical triple system with the most intrinsically circular outer orbit (2020)
Journal Article
Maxted. (2020). TIC 278825952: a triply eclipsing hierarchical triple system with the most intrinsically circular outer orbit. Monthly Notices of the Royal Astronomical Society, 6034-6043. https://doi.org/10.1093/mnras/staa2762

We report the discovery of a compact triply eclipsing triple star system in the southern continuous viewing zone of the TESS space telescope. TIC 278825952 is a previously unstudied, circular eclipsing binary with a period of 4.781 days with a tertia... Read More about TIC 278825952: a triply eclipsing hierarchical triple system with the most intrinsically circular outer orbit.

Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b (2019)
Journal Article
Maxted, Smalley, & Hellier. (2019). Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b. Astronomical Journal, 43. https://doi.org/10.3847/1538-3881/aaf422

We present the discovery of three new transiting hot Jupiters by the WASP-South project, WASP-161 b, WASP-163 b, and WASP-170 b. Follow-up radial velocities obtained with the Euler/CORALIE spectrograph and transit light curves obtained with the TRAPP... Read More about Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b.

Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys (2018)
Journal Article
Schanche, N., Collier Cameron, A., Hébrard, G., Nielsen, L., Triaud, A. H. M. J., Almenara, J. M., …Wheatley, P. J. Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys. https://doi.org/10.1093/mnras/sty3146. Manuscript submitted for publication

Since the start of the Wide Angle Search for Planets (WASP) program, more than 160 transiting exoplanets have been discovered in the WASP data. In the past, possible transit-like events identified by the WASP pipeline have been vetted by human inspec... Read More about Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys.

Rossiter-McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems (2017)
Journal Article
Maxted, Smalley, & Hellier. (2017). Rossiter-McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems. Monthly Notices of the Royal Astronomical Society, 810 - 839. https://doi.org/10.1093/mnras/stw2316

We present new measurements of the projected spin-orbit angle ? for six WASP hot Jupiters, four of which are new to the literature (WASP-61, -62, -76, and -78), and two of which are new analyses of previously measured systems using new data (WASP-71,... Read More about Rossiter-McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems.

Pulsation versus metallicism in Am stars as revealed by LAMOST and WASP (2016)
Journal Article
Smalley, B., Antoci, V., L. Holdsworth, D., W. Kurtz, D., J. Murphy, S., De Cat, P., …J. Wheatley, P. (2017). Pulsation versus metallicism in Am stars as revealed by LAMOST and WASP. Monthly Notices of the Royal Astronomical Society, 465(3), 2662-2670. https://doi.org/10.1093/mnras/stw2903

We present the results of a study of a large sample of A and Am stars with spectral types from LAMOST and light curves from WASP. We find that, unlike normal A stars, d Sct pulsations in Am stars are mostly confined to the effective temperature range... Read More about Pulsation versus metallicism in Am stars as revealed by LAMOST and WASP.

ELLC - a fast, flexible light curve model for detached eclipsing binary stars and transiting exoplanets (2016)
Journal Article
Maxted, P. (2016). ELLC - a fast, flexible light curve model for detached eclipsing binary stars and transiting exoplanets. Astronomy & Astrophysics, 591, Article A111. https://doi.org/10.1051/0004-6361/201628579

Very high quality light curves are now available for thousands of detached eclipsing binary stars and transiting exoplanet systems as a result of surveys for transiting exoplanets and other large-scale photometric surveys. I have developed a binary s... Read More about ELLC - a fast, flexible light curve model for detached eclipsing binary stars and transiting exoplanets.

WASP-121 b: a hot Jupiter close to tidal disruption transiting an active F star (2016)
Journal Article
Hellier, Smalley, & Maxted. (2016). WASP-121 b: a hot Jupiter close to tidal disruption transiting an active F star. Monthly Notices of the Royal Astronomical Society, 4025 - 4043. https://doi.org/10.1093/mnras/stw522

We present the discovery by the WASP-South survey of WASP-121 b, a new remarkable short-period transiting hot Jupiter. The planet has a mass of 1.183+0.064-0.062MJup, a radius of 1.865 ± 0.044 RJup, and transits every 1.2749255+0.0000020-0.0000025 da... Read More about WASP-121 b: a hot Jupiter close to tidal disruption transiting an active F star.

The EChO science case (2015)
Journal Article
Maxted. (2015). The EChO science case. Experimental Astronomy, 329 - 391. https://doi.org/10.1007/s10686-015-9484-8

The discovery of almost two thousand exoplanets has revealed an unexpectedly diverse planet population. We see gas giants in few-day orbits, whole multi-planet systems within the orbit of Mercury, and new populations of planets with masses between th... Read More about The EChO science case.

The Araucaria project. Precise physical parameters of the eclipsing binary IO Aquarii (2015)
Journal Article
Maxted. (2015). The Araucaria project. Precise physical parameters of the eclipsing binary IO Aquarii. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201526211

Aims. Our aim is to precisely measure the physical parameters of the eclipsing binary IO Aqr and derive a distance to this system by applying a surface brightness – colour relation. Our motivation is to combine these parameters with future precise di... Read More about The Araucaria project. Precise physical parameters of the eclipsing binary IO Aquarii.

WASP-80b has a dayside within the T-dwarf range (2015)
Journal Article
Maxted, Smalley, & Hellier. (2015). WASP-80b has a dayside within the T-dwarf range. Monthly Notices of the Royal Astronomical Society, 2279 -2290. https://doi.org/10.1093/mnras/stv706

WASP-80b is a missing link in the study of exoatmospheres. It falls between the warm Neptunes and the hot Jupiters and is amenable for characterization, thanks to its host star's properties. We observed the planet through transit and during occultati... Read More about WASP-80b has a dayside within the T-dwarf range.

A kinematically unbiased search for nearby young stars in the Northern hemisphere selected using SuperWASP rotation periods (2015)
Journal Article
Binks, A., Jeffries, R., & Maxted, P. (2015). A kinematically unbiased search for nearby young stars in the Northern hemisphere selected using SuperWASP rotation periods. Monthly Notices of the Royal Astronomical Society, 452(1), 173-192. https://doi.org/10.1093/mnras/stv1309

We present a kinematically-unbiased search to identify young, nearby low-mass members of kinematic moving groups (MGs). Objects with both rotation periods shorter than 5 days in the SuperWASP All-Sky Survey and X-ray counterparts in the ROSAT All-Sky... Read More about A kinematically unbiased search for nearby young stars in the Northern hemisphere selected using SuperWASP rotation periods.

The catalogue of radial velocity variable hot subluminous stars from the MUCHFUSS project (2015)
Journal Article
Maxted. (2015). The catalogue of radial velocity variable hot subluminous stars from the MUCHFUSS project. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201525666

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims to find sdBs with compact companions such as massive white dwarfs, neutron stars, or black holes. Here we provide classifications, atmospheric parameters... Read More about The catalogue of radial velocity variable hot subluminous stars from the MUCHFUSS project.

WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars (2015)
Journal Article
Hellier, Smalley, & Maxted. (2015). WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201423591

We report the discovery of the planets WASP-20b and WASP-28b along with measurements of their sky-projected orbital obliquities. WASP-20b is an inflated, Saturn-mass planet (0.31?MJup; 1.46?RJup) in a 4.9-day, near-aligned (? = 12.7 ± 4.2°) orbit aro... Read More about WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars.

The well-aligned orbit of Wasp-84b: evidence for disk migration of a hot Jupiter (2015)
Journal Article
Smalley, Hellier, & Maxted. (2015). The well-aligned orbit of Wasp-84b: evidence for disk migration of a hot Jupiter. Astrophysical Journal Letters, https://doi.org/10.1088/2041-8205/800/1/L9

We report the sky-projected orbital obliquity (spin–orbit angle) of WASP-84 b, a 0.69${{M}_{{\rm Jup}}}$ planet in an 8.52 day orbit around a G9V/K0V star, to be ? = -0.3 ± 1.7°. We obtain a true obliquity of ? = 17.3 ± 7.7° from a measurement of the... Read More about The well-aligned orbit of Wasp-84b: evidence for disk migration of a hot Jupiter.

WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits (2014)
Journal Article
Smalley, & Maxted. (2014). WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424752

We have used the WASP survey to discover two exoplanetary systems, each consisting of a Jupiter-sized planet transiting an 11th-magnitude (V) main-sequence star. WASP-104b orbits its star in 1.75 d, whereas WASP-106b has the fourth-longest orbital pe... Read More about WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits.

WASP 1628+10 - an EL CVn-type binary with a very-low-mass stripped-red-giant star and multi-periodic pulsations (2014)
Journal Article
Maxted. (2014). WASP 1628+10 - an EL CVn-type binary with a very-low-mass stripped-red-giant star and multi-periodic pulsations. Monthly Notices of the Royal Astronomical Society, 208-216. https://doi.org/10.1093/mnras/stu1465

The star 1SWASP J162842.31+101416.7 (WASP 1628+10) is one of several EL CVn-type stars recently identified using the WASP database, i.e., an eclipsing binary star in which an A-type dwarf star (WASP 1628+10A) eclipses the remnant of a disrupted red g... Read More about WASP 1628+10 - an EL CVn-type binary with a very-low-mass stripped-red-giant star and multi-periodic pulsations.

WASP-117b: a 10-day-period Saturn in an eccentric and misaligned orbit (2014)
Journal Article
Hellier, Smalley, & Maxted. (2014). WASP-117b: a 10-day-period Saturn in an eccentric and misaligned orbit. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424481

We report the discovery of WASP-117b, the first planet with a period beyond 10 days found by the WASP survey. The planet has a mass of Mp = 0.2755 ± 0.0089 MJ, a radius of and is in an eccentric (e = 0.302 ± 0.023), 10.02165 ± 0.00055 d orbit around... Read More about WASP-117b: a 10-day-period Saturn in an eccentric and misaligned orbit.

Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP (2014)
Journal Article
Smalley, Hellier, C., & Maxted, P. (2014). Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424027

Period or amplitude variations in eclipsing binaries may reveal the presence of additional massive bodies in the system, such as circumbinary planets. Here, we have studied twelve previously-known eclipsing post-common-envelope binaries for evidence... Read More about Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP.

A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b (2014)
Journal Article
Smalley, Maxted, & Hellier. (2014). A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b. Monthly Notices of the Royal Astronomical Society, 3392 -3401. https://doi.org/10.1093/mnras/stu520

We present Rossiter–McLaughlin observations of WASP-13b and WASP-32b and determine the sky-projected angle between the normal of the planetary orbit and the stellar rotation axis (?). WASP-13b and WASP-32b both have prograde orbits and are consistent... Read More about A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b.

Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18 (2012)
Journal Article
Maxted, P., Anderson, D. R., Doyle, A. P., Gillon, M., Harrington, J., Iro, N., …Southworth, J. (2013). Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18. Monthly Notices of the Royal Astronomical Society, 428(3), 2645-2660. https://doi.org/10.1093/mnras/sts231

We present new lightcurves of the massive hot Jupiter system WASP-18 obtained with the Spitzer spacecraft covering the entire orbit at 3.6 micron and 4.5 micron. These lightcurves are used to measure the amplitude, shape and phase of the thermal phas... Read More about Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18.

Membership, binarity and accretion among very low-mass stars and brown dwarfs of the s Orionis cluster (2005)
Journal Article
Kenyon, M., Jeffries, R., Naylor, T., Oliveira, J., & Maxted, P. (2005). Membership, binarity and accretion among very low-mass stars and brown dwarfs of the s Orionis cluster. Monthly Notices of the Royal Astronomical Society, 356(1), 89 -106. https://doi.org/10.1111/j.1365-2966.2004.08455.x

Intermediate resolution (R=7000) spectroscopy is presented for 76 photometrically selected very low mass (0.04<M<0.3M_{sun}) candidate members of the Sigma Orionis cluster. More than two thirds appear to be genuine cluster members on the basis of Li...

The host galaxy of GRB010222: the strongest damped Lyman-alpha system known (2001)
Journal Article
Maxted, P. (2001). The host galaxy of GRB010222: the strongest damped Lyman-alpha system known

Analysis of the absorption lines in the afterglow spectrum of the gamma-ray burst GRB010222 indicates that its host galaxy (at a redshift of z=1.476) is the strongest damped Lyman-alpha (DLA) system known, having a very low metallicity and modest dus... Read More about The host galaxy of GRB010222: the strongest damped Lyman-alpha system known.

Emission from the secondary star in the old CV WZ Sge (2001)
Journal Article
Maxted. (2001). Emission from the secondary star in the old CV WZ Sge. Astrophysical Journal, 145-148. https://doi.org/10.1086/338107

We present the first detection of the mass donor star in the cataclysmic variable WZ Sge. Phase resolved spectroscopy reveals narrow Balmer emission components from the irradiated secondary star during the 2001 outburst. Its radial velocity curve ind... Read More about Emission from the secondary star in the old CV WZ Sge.