Outputs (136)

The EBLM project. VII. Spin–orbit alignment for the circumbinary planet host EBLM J0608-59 A/TOI-1338 A (2020)
Journal Article
Maxted, & Hellier. (2020). The EBLM project. VII. Spin–orbit alignment for the circumbinary planet host EBLM J0608-59 A/TOI-1338 A. Monthly Notices of the Royal Astronomical Society, 1627-1633. https://doi.org/10.1093/mnras/staa2071

A dozen short-period detached binaries are known to host transiting circumbinary planets. In all circumbinary systems so far, the planetary and binary orbits are aligned within a couple of degrees. However, the obliquity of the primary star, which is... Read More about The EBLM project. VII. Spin–orbit alignment for the circumbinary planet host EBLM J0608-59 A/TOI-1338 A.

The TOI-763 system: sub-Neptunes orbiting a Sun-like star (2020)
Journal Article
Hellier. (2020). The TOI-763 system: sub-Neptunes orbiting a Sun-like star. Monthly Notices of the Royal Astronomical Society, 4503-4517. https://doi.org/10.1093/mnras/staa2502

We report the discovery of a planetary system orbiting TOI-763 (aka CD-39 7945), a V = 10.2, high proper motion G-type dwarf star that was photometrically monitored by the TESS space mission in Sector 10. We obtain and model the stellar spectrum and... Read More about The TOI-763 system: sub-Neptunes orbiting a Sun-like star.

The Multiplanet System TOI-421*: A Warm Neptune and a Super Puffy Mini-Neptune Transiting a G9 V Star in a Visual Binary* (2020)
Journal Article
Hellier. (2020). The Multiplanet System TOI-421*: A Warm Neptune and a Super Puffy Mini-Neptune Transiting a G9 V Star in a Visual Binary*. Astronomical Journal, https://doi.org/10.3847/1538-3881/aba124

We report the discovery of a warm Neptune and a hot sub-Neptune transiting TOI-421 (BD-14 1137, TIC 94986319), a bright (V = 9.9) G9 dwarf star in a visual binary system observed by the Transiting Exoplanet Survey Satellite (TESS) space mission in Se... Read More about The Multiplanet System TOI-421*: A Warm Neptune and a Super Puffy Mini-Neptune Transiting a G9 V Star in a Visual Binary*.

Discovery and characterization of the exoplanets WASP-148b and c - A transiting system with two interacting giant planets (2020)
Journal Article
Hellier, Smalley, & Maxted. (2020). Discovery and characterization of the exoplanets WASP-148b and c - A transiting system with two interacting giant planets. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/202038296

We present the discovery and characterization of WASP-148, a new extrasolar system that includes at least two giant planets. The host star is a slowly rotating inactive late-G dwarf with a V = 12 magnitude. The planet WASP-148b is a hot Jupiter of 0.... Read More about Discovery and characterization of the exoplanets WASP-148b and c - A transiting system with two interacting giant planets.

TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet (2020)
Journal Article
Hellier. (2020). TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet. Astronomical Journal, https://doi.org/10.3847/1538-3881/ab9f95

The Transiting Exoplanet Survey Satellite mission was designed to find transiting planets around bright, nearby stars. Here, we present the detection and mass measurement of a small, short-period (˜4 days) transiting planet around the bright (V = 7.9... Read More about TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet.

TIC 278956474: Two close binaries in one young quadruple system, identified by TESS (2020)
Journal Article
Hellier. (2020). TIC 278956474: Two close binaries in one young quadruple system, identified by TESS. Astrophysical Journal, https://doi.org/10.3847/1538-3881/ab9d20

We have identified a quadruple system with two close eclipsing binaries in TESS data. The object is unresolved in Gaia and appears as a single source at parallax 1.08~$\pm$0.01 mas. Both binaries have observable primary and secondary eclipses and wer... Read More about TIC 278956474: Two close binaries in one young quadruple system, identified by TESS.

Publisher Correction: A planet within the debris disk around the pre-main-sequence star AU Microscopii (2020)
Journal Article
Plavchan, P., Barclay, T., Gagné, J., Gao, P., Cale, B., Matzko, W., …Zilberman, P. (2020). Publisher Correction: A planet within the debris disk around the pre-main-sequence star AU Microscopii. Nature, 583(7818), E31-E31. https://doi.org/10.1038/s41586-020-2516-1

Correction to: Nature https://www.nature.com/articles/s41586-020-2400-zPublished online 24 June 2020 In Fig. 3 of this Article, the subscript ‘Sun’ symbols on both axis labels (R☉ and M☉) should have been subscript ‘Earth’ symbols (R⊕ and M⊕), as... Read More about Publisher Correction: A planet within the debris disk around the pre-main-sequence star AU Microscopii.

Two Intermediate-mass Transiting Brown Dwarfs from the TESS Mission (2020)
Journal Article
Carmichael, T. W., Quinn, S. N., Mustill, A. J., Huang, C., Zhou, G., Persson, C. M., …Latham, D. W. (in press). Two Intermediate-mass Transiting Brown Dwarfs from the TESS Mission. Astronomical Journal, 160(1), 53. https://doi.org/10.3847/1538-3881/ab9b84

We report the discovery of two intermediate-mass transiting brown dwarfs (BDs), TOI-569b and TOI-1406b, from NASA's Transiting Exoplanet Survey Satellite mission. TOI-569b has an orbital period of P = 6.55604 ± 0.00016 days, a mass of Mb = 64.1 ± 1.9... Read More about Two Intermediate-mass Transiting Brown Dwarfs from the TESS Mission.

A planet within the debris disk around the pre-main-sequence star AU Microscopii. (2020)
Journal Article
Hellier. (2020). A planet within the debris disk around the pre-main-sequence star AU Microscopii. Nature, 497 - 500. https://doi.org/10.1038/s41586-020-2400-z

AU Microscopii (AU Mic) is the second closest pre-main-sequence star, at a distance of 9.79 parsecs and with an age of 22 million years1. AU Mic possesses a relatively rare2 and spatially resolved3 edge-on debris disk extending from about 35 to 210 a... Read More about A planet within the debris disk around the pre-main-sequence star AU Microscopii..

Two Transiting Hot Jupiters from the WASP Survey: WASP-150b and WASP-176b (2020)
Journal Article
Cooke, B. F., Pollacco, D., Almleaky, Y., Barkaoui, K., Benkhaldoun, Z., Blake, J. A., …Alikakos, J. (2020). Two Transiting Hot Jupiters from the WASP Survey: WASP-150b and WASP-176b. Astronomical Journal, 159(6), Article 255. https://doi.org/10.3847/1538-3881/ab88db

We report the discovery of two transiting exoplanets from the WASP survey, WASP-150b and WASP-176b. WASP-150b is an eccentric (e = 0.38) hot Jupiter on a 5.6 day orbit around a V = 12.03, F8 main-sequence host. The host star has a mass and radius of... Read More about Two Transiting Hot Jupiters from the WASP Survey: WASP-150b and WASP-176b.