Pierre Maxted's Outputs (240)

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., C. C. Barros, S., Collier Cameron, A., Delrez, L., Faedi, F., A. Haswell, C., Hellier, C., Horne, K., Jehin, E., F. L. Maxted, P., J. Norton, A., Pollacco, D., Skillen, I., M. S. Smith, A., G. West, R., & 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., Lendl, M., Maxted, P., Pepe, F., Pollacco, D., Queloz, D., Ségransan, D., Smalley, B., Smith, A., Southworth, J., Triaud, A., Udry, S., & 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., Gillon, M., Hellier, C., Jehin, E., Lendl, M., Neveu-VanMalle, M., Maxted, P., Pepe, F., Pollacco, D., Queloz, D., Ségransan, D., Smalley, B., Smith, A., Southworth, J., Triaud, 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., Anderson, D. R., Barros, S. C. C., Collier Cameron, A., Delrez, L., Faedi, F., Haswell, C. A., Hellier, C., Horne, K., Jehin, E., Norton, A. J., Pollacco, D., Skillen, I., Smith, A. M. S., West, R. G., & 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., Vučković, M., Tillich, A., Müller, S., Edelmann, H., Classen, L., & 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., Lendl, M., Maxted, P., Pepe, F., Pollacco, D., Queloz, D., Ségransan, D., Smith, A., Smalley, B., Southworth, J., Triaud, A., Udry, S., Van Grootel, V., & 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)
Presentation / Conference Contribution
Geier, S., Marsh, T. R., Dunlap, B. H., Barlow, B. N., Schaffenroth, V., Ziegerer, E., Heber, U., Kupfer, T., Maxted, P. F. L., Miszalski, B., Shporer, A., Telting, J. H., Ostensen, R. H., O'Toole, S. J., Gänsicke, B. T., & Napiwotzki, R. (2012, August). Discovery of the Closest Hot Subdwarf Binary with White Dwarf Companion

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.

Discovery of non-radial pulsations in a stripped red-giant star (2013)
Presentation / Conference Contribution
Serenelli, A., Maxted, P., & Miglio, A. Discovery of non-radial pulsations in a stripped red-giant star. Presented at NEW ADVANCES IN STELLAR PHYSICS: FROM MICROSCOPIC TO MACROSCOPIC PROCESSES

We report the discovery of a new class of non-radial pulsating stars that are the precursors of low-mass white dwarf stars.

Thermal Emission Of Wasp-14b Revealed With Three Spitzer Eclipses (2013)
Journal Article
Maxted, Blecic, J., Harrington, J., Madhusudhan, N., Stevenson, K. B., Hardy, R. A., Cubillos, P. E., Hardin, M., Campo, C. J., Bowman, W. C., Nymeyer, S., Loredo, T. J., Anderson, D. R., & Maxted, P. F. L. (2013). Thermal Emission Of Wasp-14b Revealed With Three Spitzer Eclipses. Astrophysical Journal, 779(1), https://doi.org/10.1088/0004-637X/779/1/5

Exoplanet WASP-14b is a highly irradiated, transiting hot Jupiter. Joshi et al. calculate an equilibrium temperature (T eq) of 1866 K for zero albedo and reemission from the entire planet, a mass of 7.3 ± 0.5 Jupiter masses (M J), and a radius of 1.2... Read More about Thermal Emission Of Wasp-14b Revealed With Three Spitzer Eclipses.

EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems (2013)
Journal Article
Maxted, P. F. L., Bloemen, S., Heber, U., Geier, S., Wheatley, P. J., Marsh, T. R., Breedt, E., Sebastian, D., Faillace, G., Owen, C., Pulley, D., Smith, D., Kolb, U., Haswell, C. A., Southworth, J., Anderson, D. R., Smalley, B., Collier Cameron, A., Hebb, L., Simpson, E. K., …Hadigal, S. (2014). EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems. Monthly Notices of the Royal Astronomical Society, 437(2), 1681-1697. https://doi.org/10.1093/mnras/stt2007

The star 1SWASP J024743.37−251549.2 was recently discovered to be a binary star in which an A-type dwarf star eclipses the remnant of a disrupted red giant star (WASP 0247−25 B). The remnant is in a rarely observed state evolving to higher effective... Read More about EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems.

A GROUND-BASED OPTICAL TRANSMISSION SPECTRUM OF WASP-6b (2013)
Journal Article
Jordán, A., Espinoza, N., Rabus, M., Eyheramendy, S., Sing, D. K., Désert, J.-M., Bakos, G. Á., Fortney, J. J., López-Morales, M., Maxted, P. F. L., Triaud, A. H. M. J., & Szentgyorgyi, A. (in press). A GROUND-BASED OPTICAL TRANSMISSION SPECTRUM OF WASP-6b. Astrophysical Journal, 778(2), 184. https://doi.org/10.1088/0004-637x/778/2/184

We present a ground-based optical transmission spectrum of the inflated sub-Jupiter-mass planet WASP-6b. The spectrum was measured in 20 spectral channels from 480 nm to 860 nm using a series of 91 spectra over a complete transit event. The observati... Read More about A GROUND-BASED OPTICAL TRANSMISSION SPECTRUM OF WASP-6b.

Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii (2013)
Journal Article
Gómez Maqueo Chew, Y., Faedi, F., Pollacco, D., Brown, D. J. A., Doyle, A. P., Collier Cameron, A., Gillon, M., Lendl, M., Smalley, B., Triaud, A. H. M. J., West, R. G., Wheatley, P. J., Busuttil, R., Liebig, C., Anderson, D. R., Armstrong, D. J., Barros, S. C. C., Bento, J., Bochinski, J., Burwitz, V., …Watson, C. (2013). Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii. Astronomy & Astrophysics, 559, Article A36. https://doi.org/10.1051/0004-6361/201322314

We report the discovery of two transiting hot Jupiters, WASP-65b (Mpl = 1.55 ± 0.16 MJ; Rpl = 1.11 ± 0.06 RJ), and WASP-75b (Mpl = 1.07 ± 0.05 MJ; Rpl = 1.27 ± 0.05 RJ). They orbit their host star every ~2.311, and ~2.484 days, respectively. The plan... Read More about Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii.

Binaries discovered by the MUCHFUSS project: FBS 0117+396: An sdB+dM binary with a pulsating primary⋆ (2013)
Journal Article
Østensen, R. H., Geier, S., Schaffenroth, V., Telting, J. H., Bloemen, S., Németh, P., Beck, P. G., Lombaert, R., Pápics, P. I., Tillich, A., Ziegerer, E., Fox Machado, L., Littlefair, S., Dhillon, V., Aerts, C., Heber, U., Maxted, P. F. L., Gänsicke, B. T., & Marsh, T. R. (2013). Binaries discovered by the MUCHFUSS project: FBS 0117+396: An sdB+dM binary with a pulsating primary⋆. Astronomy & Astrophysics, 559, Article A35. https://doi.org/10.1051/0004-6361/201322022

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims to discover subdwarf-B stars with massive compact companions such as overmassive white dwarfs (M > 1.0 M⊙), neutron stars or black holes. From the 127 su... Read More about Binaries discovered by the MUCHFUSS project: FBS 0117+396: An sdB+dM binary with a pulsating primary⋆.

Multi-periodic pulsations of a stripped red-giant star in an eclipsing binary system (2013)
Journal Article
Maxted, P. F. L., Serenelli, A. M., Miglio, A., Marsh, T. R., Heber, U., Dhillon, V. S., Littlefair, S., Copperwheat, C., Smalley, B., Breedt, E., & Schaffenroth, V. (2013). Multi-periodic pulsations of a stripped red-giant star in an eclipsing binary system. Nature, 498(7455), 463-465. https://doi.org/10.1038/nature12192

Low-mass white-dwarf stars are the remnants of disrupted red-giant stars in binary millisecond pulsars1 and other exotic binary star systems2,3,4. Some low-mass white dwarfs cool rapidly, whereas others stay bright for millions of years because of st... Read More about Multi-periodic pulsations of a stripped red-giant star in an eclipsing binary system.

A progenitor binary and an ejected mass donor remnant of faint type Ia supernovae (2013)
Journal Article
Geier, S., Marsh, T. R., Wang, B., Dunlap, B., Barlow, B. N., Schaffenroth, V., Chen, X., Irrgang, A., Maxted, P. F. L., Ziegerer, E., Kupfer, T., Miszalski, B., Heber, U., Han, Z., Shporer, A., Telting, J. H., Gänsicke, B. T., Østensen, R. H., O’Toole, S. J., & Napiwotzki, R. (2013). A progenitor binary and an ejected mass donor remnant of faint type Ia supernovae. Astronomy & Astrophysics, 554, Article A54. https://doi.org/10.1051/0004-6361/201321395

Type Ia supernovae (SN Ia) are the most important standard candles for measuring the expansion history of the universe. The thermonuclear explosion of a white dwarf can explain their observed properties, but neither the progenitor systems nor any ste... Read More about A progenitor binary and an ejected mass donor remnant of faint type Ia supernovae.

A new bright eclipsing hot subdwarf binary from the ASAS and SuperWASP surveys (2013)
Journal Article
Schaffenroth, V., Geier, S., Drechsel, H., Heber, U., Wils, P., Østensen, R. H., Maxted, P. F. L., & di Scala, G. (2013). A new bright eclipsing hot subdwarf binary from the ASAS and SuperWASP surveys. Astronomy & Astrophysics, 553, Article A18. https://doi.org/10.1051/0004-6361/201220929

We report the discovery of a bright (mV = 11.6 mag), eclipsing, hot subdwarf binary of spectral type B with a late main sequence companion from the All Sky Automated Survey (ASAS 102322-3737.0). Such systems are called HW Vir stars after the prototyp... Read More about A new bright eclipsing hot subdwarf binary from the ASAS and SuperWASP surveys.

Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}m (2013)
Journal Article
Mahtani, D. P., Mahtani, D. P., Maxted, P. F. L., Anderson, D. R., Smith, A. M. S., Smalley, B., Tregloan-Reed, J., Southworth, J., Madhusudhan, N., Collier Cameron, A., Gillon, M., Harrington, J., Hellier, C., Pollacco, D., Queloz, D., Triaud, A. H. M. J., & West, R. G. (2013). Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}m. Monthly Notices of the Royal Astronomical Society, 432(1), 693-701. https://doi.org/10.1093/mnras/stt505

We present new warm Spitzer occultation photometry of WASP-26 at 3.6{\mu}m and 4.5{\mu}m along with new transit photometry taken in the g,r and i bands. We report the first detection of the occultation of WASP-26b, with occultation depths at 3.6{\mu}... Read More about Warm Spitzer Occultation Photometry of WASP-26b at 3.6{\mu}m and 4.5{\mu}m.

WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star (2013)
Journal Article
Smith, A. M. S., Anderson, D. R., Bouchy, F., Collier Cameron, A., Doyle, A. P., Fumel, A., Gillon, M., Hébrard, G., Hellier, C., Jehin, E., Lendl, M., Maxted, P. F. L., Moutou, C., Pepe, F., Pollacco, D., Queloz, D., Santerne, A., Segransan, D., Smalley, B., Southworth, J., …West, R. G. (2013). WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star. Astronomy & Astrophysics, 552, Article A120. https://doi.org/10.1051/0004-6361/201220727

We report the discovery by the WASP transit survey of a highly-irradiated, massive (2.242 ± 0.080 MJup) planet which transits a bright (V = 10.6), evolved F8 star every 2.9 days. The planet, WASP-71b, is larger than Jupiter (1.46 ± 0.13 RJup), but le... Read More about WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star.