The TESS light curve of the eccentric eclipsing binary 1SWASP J011351.29+314909.7 – no evidence for a very hot M-dwarf companion (2020)
Journal Article
Maxted. (2020). The TESS light curve of the eccentric eclipsing binary 1SWASP J011351.29+314909.7 – no evidence for a very hot M-dwarf companion. Monthly Notices of the Royal Astronomical Society: Letters, 15-19. https://doi.org/10.1093/mnrasl/slaa122

A 2014 study of the eclipsing binary star 1SWASPJ011351.29+314909.7 (J0113+31) reported an unexpectedly high effective temperature for the M-dwarf companion to the 0.95-M? primary star. The effective temperature inferred from the secondary eclipse de... Read More about The TESS light curve of the eccentric eclipsing binary 1SWASP J011351.29+314909.7 – no evidence for a very hot M-dwarf companion.

NGTS-12b: A sub-Saturn mass transiting exoplanet in a 7.53 day orbit (2020)
Journal Article
(2020). NGTS-12b: A sub-Saturn mass transiting exoplanet in a 7.53 day orbit. Monthly Notices of the Royal Astronomical Society, 3139 - 3148. https://doi.org/10.1093/mnras/staa2976

We report the discovery of the transiting exoplanet NGTS-12b by the Next Generation Transit Survey (NGTS). The host star, NGTS-12, is a V = 12.38?mag star with an effective temperature of Teff = 5690 ± 130?K. NGTS-12b orbits with a period of P = 7.53... Read More about NGTS-12b: A sub-Saturn mass transiting exoplanet in a 7.53 day orbit.

WASP-186 and WASP-187: two hot Jupiters discovered by SuperWASP and SOPHIE with additional observations by TESS (2020)
Journal Article
Smalley, Hellier, & Maxted. (2020). WASP-186 and WASP-187: two hot Jupiters discovered by SuperWASP and SOPHIE with additional observations by TESS. Monthly Notices of the Royal Astronomical Society, 428-440. https://doi.org/10.1093/mnras/staa2848

We present the discovery of two new hot Jupiters identified from the WASP survey, WASP-186b and WASP-187b (TOI-1494.01 and TOI-1493.01). Their planetary nature was established from SOPHIE spectroscopic observations, and additional photometry was obta... Read More about WASP-186 and WASP-187: two hot Jupiters discovered by SuperWASP and SOPHIE with additional observations by TESS.

The VMC survey XXXVIII. Proper motion of the Magellanic Bridge (2020)
Journal Article
Van Loon, & Oliveira. (2020). The VMC survey XXXVIII. Proper motion of the Magellanic Bridge. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/202037478

Context. The Magellanic Clouds are a nearby pair of interacting dwarf galaxies and satellites of the Milky Way. Studying their kinematic properties is essential to understanding their origin and dynamical evolution. They have prominent tidal features... Read More about The VMC survey XXXVIII. Proper motion of the Magellanic Bridge.

The intrinsic reddening of the Magellanic Clouds as traced by background galaxies – II. The Small Magellanic Cloud (2020)
Journal Article
Bell, C. P. M., Cioni, M. L., Wright, A. H., Rubele, S., Nidever, D. L., Tatton, B. L., …Vivas, A. K. (2020). The intrinsic reddening of the Magellanic Clouds as traced by background galaxies – II. The Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 499(1), 993 -1004. https://doi.org/10.1093/mnras/staa2786

We present a map of the total intrinsic reddening across ? 34 deg2 of the Small Magellanic Cloud (SMC) derived using optical (ugriz) and near-infrared (IR; YJKs) spectral energy distributions (SEDs) of background galaxies. The reddening map is create... Read More about The intrinsic reddening of the Magellanic Clouds as traced by background galaxies – II. The Small Magellanic Cloud.

Isotopic ratios in the red giant component of the recurrent nova T Coronae Borealis (2020)
Journal Article
(2020). Isotopic ratios in the red giant component of the recurrent nova T Coronae Borealis. Monthly Notices of the Royal Astronomical Society, 4853-4863. https://doi.org/10.1093/mnras/staa2658

We report the determination of abundances and isotopic ratios for C, O and Si in the photosphere of the red giant component of the recurrent nova T Coronae Borealis from new 2.284–2.402 µm and 3.985–4.155 µm spectroscopy. Abundances and isotopic rati... Read More about Isotopic ratios in the red giant component of the recurrent nova T Coronae Borealis.

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.

Constraining the thermally pulsing asymptotic giant branch phase with resolved stellar populations in the Large Magellanic Cloud (2020)
Journal Article
Van Loon. (2020). Constraining the thermally pulsing asymptotic giant branch phase with resolved stellar populations in the Large Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 3283-3301. https://doi.org/10.1093/mnras/staa2565

Reliable models of the thermally pulsing asymptotic giant branch (TP-AGB) phase are of critical importance across astrophysics, including our interpretation of the spectral energy distribution of galaxies, cosmic dust production, and enrichment of th... Read More about Constraining the thermally pulsing asymptotic giant branch phase with resolved stellar populations in the Large Magellanic Cloud.

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*.

A white dwarf bound to the transiting planetary system WASP-98 (2020)
Journal Article
Southworth, J., Tremblay, P., Gänsicke, B. T., Evans, D., & Močnik, T. (2020). A white dwarf bound to the transiting planetary system WASP-98. Monthly Notices of the Royal Astronomical Society, 497(4), 4416 - 4422. https://doi.org/10.1093/mnras/staa2328

WASP-98 is a planetary system containing a hot Jupiter transiting a late-G dwarf. A fainter star 12? distant has previously been identified as a white dwarf, with a distance and proper motion consistent with a physical association with the planetary... Read More about A white dwarf bound to the transiting planetary system WASP-98.

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.

The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity (2020)
Journal Article
Jeffries, R., & Wright, N. J. (2020). The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/202038688

Context. Reconstructing the Galactic evolution of lithium (Li) is the main tool used to constrain the source(s) of Li enrichment in the Galaxy. Recent results have suggested a decline in Li at supersolar metallicities, which may indicate reduced prod... Read More about The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity.

Fundamental effective temperature measurements for eclipsing binary stars I. Development of the method and application to AI Phoenicis (2020)
Journal Article
Smalley, & Maxted. (2020). Fundamental effective temperature measurements for eclipsing binary stars I. Development of the method and application to AI Phoenicis. Monthly Notices of the Royal Astronomical Society, 2899-2909. https://doi.org/10.1093/mnras/staa2167

Stars with accurate and precise effective temperature (Teff) measurements are needed to test stellar atmosphere models and calibrate empirical methods to determine Teff. There are few standard stars currently available to calibrate temperature indica... Read More about Fundamental effective temperature measurements for eclipsing binary stars I. Development of the method and application to AI Phoenicis.

The Compact Triply Eclipsing Triple Star TIC 209409435 Discovered with TESS (2020)
Journal Article
Maxted. (2020). The Compact Triply Eclipsing Triple Star TIC 209409435 Discovered with TESS. Monthly Notices of the Royal Astronomical Society, 4624-4636. https://doi.org/10.1093/mnras/staa1817

We report the discovery in TESS Sectors 3 and 4 of a compact triply eclipsing triple star system. TIC 209409435 is a previously unknown eclipsing binary with a period of 5.717 days, and the presence of a third star in an outer eccentric orbit of 121.... Read More about The Compact Triply Eclipsing Triple Star TIC 209409435 Discovered with TESS.

The VMC survey – XXXIX: Mapping metallicity trends in the Small Magellanic Cloud using near-infrared passbands (2020)
Journal Article
Choudhury, S., de Grijs, R., Rubele, S., Bekki, K., Cioni, M. L., Ivanov, V. D., …Ripepi, V. (2020). The VMC survey – XXXIX: Mapping metallicity trends in the Small Magellanic Cloud using near-infrared passbands. Monthly Notices of the Royal Astronomical Society, 497(3), 3746-3760. https://doi.org/10.1093/mnras/staa2140

We have derived high spatial resolution metallicity maps covering ~42 deg2 across the Small Magellanic Cloud (SMC) in an attempt to understand its metallicity distribution and gradients up to a radius of ~ 4?. Using the near-infrared VISTA Survey of... Read More about The VMC survey – XXXIX: Mapping metallicity trends in the Small Magellanic Cloud using near-infrared passbands.

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.

OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk (2020)
Journal Article
Hirao, Y., Bennett, D. P., Ryu, Y., Koshimoto, N., Udalski, A., Yee, J. C., …Kandori, R. (2020). OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk. Astronomical Journal, 160(2), Article 74. https://doi.org/10.3847/1538-3881/ab9ac3

We report the discovery and analysis of the planetary microlensing event OGLE-2017-BLG-0406, which was observed both from the ground and by the Spitzer satellite in a solar orbit. At high magnification, the anomaly in the light curve was densely obse... Read More about OGLE-2017-BLG-0406: Spitzer Microlens Parallax Reveals Saturn-mass Planet Orbiting M-dwarf Host in the Inner Galactic Disk.

Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1 (2020)
Journal Article
Bohn, A. J., Kenworthy, M. A., Ginski, C., Rieder, S., Mamajek, E. E., Meshkat, T., …Southworth, J. (2020). Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1. Astrophysical Journal, 898, Article L16. https://doi.org/10.3847/2041-8213/aba27e

Even though tens of directly imaged companions have been discovered in the past decades, the number of directly confirmed multiplanet systems is still small. Dynamical analysis of these systems imposes important constraints on formation mechanisms of... Read More about Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1.