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Pierre Maxted's Outputs (231)

Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population (2015)
Journal Article
Kupfer, T., Geier, S., Heber, U., Østensen, R., Barlow, B., Maxted, P., …Gänsicke, B. (2015). Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population. Astronomy & Astrophysics, A44 -?. https://doi.org/10.1051/0004-6361/201425213

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like massive white dwarfs (M>1.0 M$_\odot$), neutron stars, or stellar-mass black holes. We... Read More about Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population.

MUCHFUSS: Status and Highlights (2014)
Conference Proceeding
Geier, S., Kupfer, T., Barlow, B. N., Schaffenroth, V., Furst, F., Heuser, C., …Napiwotzki, R. (2014). MUCHFUSS: Status and Highlights.

The MUCHFUSS project aims at finding sdBs with massive compact companions. Here we report on the current status of our spectroscopic and photometric follow-up campaigns and present some highlight results. We derive orbital solutions of seven new sdB... Read More about MUCHFUSS: Status and Highlights.

WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system (2014)
Journal Article
Neveu-VanMalle, M., Queloz, D., Anderson, D., Charbonnel, C., Collier Cameron, A., Delrez, L., …West, R. (2014). WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424744

We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. WASP-94A (2MASS 20550794–3408079) is an F8 type star hosting a transiting planet with a radius of 1.72 ± 0.06 RJup, a mass of 0.452 ± 0.034 MJ... Read More about WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system.

Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b (2014)
Journal Article
Hellier, C., Anderson, D., Collier Cameron, A., Delrez, L., Gillon, M., Jehin, E., …West, R. (2014). Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b. Astronomical Journal, 150(1), Article 18. https://doi.org/10.1088/0004-6256/150/1/18

We report the discovery of three new transiting hot Jupiters by WASP-South together with the TRAPPIST photometer and the Euler/CORALIE spectrograph. WASP-74b orbits a star of V = 9.7, making it one of the brighter systems accessible to Southern teles... Read More about Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b.

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.

Six newly-discovered hot Jupiters transiting F/G stars: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b & WASP-112b (2014)
Journal Article
Anderson, D., Brown, D., Collier Cameron, A., Delrez, L., Fumel, A., Gillon, M., …West, R. (2014). Six newly-discovered hot Jupiters transiting F/G stars: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b & WASP-112b. arXiv,

We present the discoveries of six transiting hot Jupiters: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b and WASP-112b. The planets have masses of 0.51--2.2 MJup and radii of 1.19--1.44 RJup and are in orbits of 1.68--3.78 d around stars with... Read More about Six newly-discovered hot Jupiters transiting F/G stars: WASP-87b, WASP-108b, WASP-109b, WASP-110b, WASP-111b & WASP-112b.

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.

Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary (2014)
Journal Article
Anderson, D., Collier Cameron, A., Delrez, L., Doyle, A., Faedi, F., Fumel, A., …West, R. (2014). Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary. Monthly Notices of the Royal Astronomical Society, 445(2), 1114 -1129. https://doi.org/10.1093/mnras/stu1737

We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ~ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3.868-d period around an active, ~1-Gyr, mid-K dw... Read More about Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary.

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.

The contribution of the major planet search surveys to EChO target selection (2014)
Journal Article
Micela, G., Bakos, G. Á., Lopez-Morales, M., Maxted, P. F. L., Pagano, I., Sozzetti, A., & Wheatley, P. J. (2015). The contribution of the major planet search surveys to EChO target selection. Experimental Astronomy, 40(2-3), 577-593. https://doi.org/10.1007/s10686-014-9412-3

The EChO core science will be based on a three tier survey, each with increasing sensitivity, in order to study the population of exo-planets from super-Earths to Jupiter-like planets, in the very hot to temperate zones (temperatures of 300 K - 3000... Read More about The contribution of the major planet search surveys to EChO target selection.

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.

Eclipsing Am binary systems in the SuperWASP survey (2014)
Journal Article
Smalley, B., Southworth, J., I. Pintado, O., Gillon, M., L. Holdsworth, D., R. Anderson, D., …J. Wheatley, P. (2014). Eclipsing Am binary systems in the SuperWASP survey. Astronomy & Astrophysics, 564, Article A69. https://doi.org/10.1051/0004-6361/201323158

The results of a search for eclipsing Am star binaries using photometry from the SuperWASP survey are presented. The light curves of 1742 Am stars fainter than V = 8.0 were analysed for the presence of eclipses. A total of 70 stars were found to exhi... Read More about Eclipsing Am binary systems in the SuperWASP survey.

Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b (2014)
Journal Article
Hellier, C., Anderson, D., Collier Cameron, A., Delrez, L., Gillon, M., Jehin, E., …West, R. (2014). Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b. Monthly Notices of the Royal Astronomical Society, 440(3), 1982 -1992. https://doi.org/10.1093/mnras/stu410

We report the discovery of the transiting exoplanets WASP-95b, WASP-96b, WASP-97b, WASP-98b, WASP-99b, WASP-100b and WASP-101b. All are hot Jupiters with orbital periods in the range 2.1–5.7 d, masses of 0.5–2.8 MJup and radii of 1.1–1.4 RJup. The or... Read More about Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b.

Transiting planets from WASP-South, Euler, and TRAPPIST WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars (2014)
Journal Article
Delrez, L., Van Grootel, V., Anderson, D., Collier-Cameron, A., Doyle, A., Fumel, A., …West, R. (2014). Transiting planets from WASP-South, Euler, and TRAPPIST WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars. Astronomy & Astrophysics, 563, Article A143. https://doi.org/10.1051/0004-6361/201323204

Using the WASP transit survey, we report the discovery of three new hot Jupiters, WASP-68 b, WASP-73 b and WASP-88 b. The planet WASP-68 bhas a mass of 0.95 ± 0.03 MJup, a radius of 1.24-0.06+0.10 RJup, and orbits a V = 10.7 G0-type star (1.24 ± 0.0... Read More about Transiting planets from WASP-South, Euler, and TRAPPIST WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars.

High-frequency A-type pulsators discovered using SuperWASP(star)dagger (2014)
Journal Article
Holdsworth, D. L., Smalley, B., Gillon, M., Clubb, K. I., Southworth, J., Maxted, P. F. L., …Wheatley, P. J. (2014). High-frequency A-type pulsators discovered using SuperWASP(star)dagger. Monthly Notices of the Royal Astronomical Society, 439(2), 2078 - 2095. https://doi.org/10.1093/mnras/stu094

We present the results of a survey using the WASP archive to search for high-frequency pulsations in F-, A- and B-type stars. Over 1.5 million targets have been searched for pulsations with amplitudes greater than 0.5 millimagnitude. We identify over... Read More about High-frequency A-type pulsators discovered using SuperWASP(star)dagger.

Orbital solutions of eight close sdB binaries and constraints on the nature of the unseen companions (2014)
Journal Article
Geier, S., Østensen, R. H., Heber, U., Kupfer, T., Maxted, P. F. L., Barlow, B. N., …McLeod, A. F. (2014). Orbital solutions of eight close sdB binaries and constraints on the nature of the unseen companions. Astronomy & Astrophysics, 562, A95. https://doi.org/10.1051/0004-6361/201323115

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars (sdBs) with massive compact companions such as white dwarfs, neutron stars, or stellar-mass black holes. In a supplementary... Read More about Orbital solutions of eight close sdB binaries and constraints on the nature of the unseen companions.

WASP-103 b: a new planet at the edge of tidal disruption (2014)
Journal Article
Gillon, M., Anderson, D., Collier-Cameron, A., Delrez, L., Hellier, C., Jehin, E., …West, R. (2014). WASP-103 b: a new planet at the edge of tidal disruption. Astronomy & Astrophysics, 562, Article L3. https://doi.org/10.1051/0004-6361/201323014

We report the discovery of WASP-103?b, a new ultra-short-period planet (P = 22.2 h) transiting a 12.1 V-magnitude F8-type main-sequence star (1.22 ± 0.04 M?, 1.44-0.03+0.05 R?, Teff = 6110 ± 160 K). WASP-103?b is significantly more massive (1.49 ± 0.... Read More about WASP-103 b: a new planet at the edge of tidal disruption.

Discovery of the Closest Hot Subdwarf Binary with White Dwarf Companion (2013)
Conference Proceeding
Geier, S., Marsh, T. R., Dunlap, B. H., Barlow, B. N., Schaffenroth, V., Ziegerer, E., …Napiwotzki, R. (2013). Discovery of the Closest Hot Subdwarf Binary with White Dwarf Companion. In 18th European White Dwarf Workshop (EUROWD12) (373)

We report the discovery of an extremely close, eclipsing binary system. A white dwarf is orbited by a core He-burning compact hot subdwarf star with a period as short as ≃ 0.04987 d making this system the most compact hot subdwarf binary discovered s... Read More about Discovery of the Closest Hot Subdwarf Binary with White Dwarf Companion.