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A kinematically hot population of young stars in the solar neighbourhood (2020)
Journal Article
Binks, A., Wright, N., & Jeffries, R. (2020). A kinematically hot population of young stars in the solar neighbourhood. Monthly Notices of the Royal Astronomical Society, 494(2), 2429-2439. https://doi.org/10.1093/mnras/staa909

In the last three decades several hundred nearby members of young stellar moving groups (MGs) have been identified, but there has been less systematic effort to quantify or characterise young stars that do not belong to previously identified MGs. Usi... Read More about A kinematically hot population of young stars in the solar neighbourhood.

Pre-main-sequence populations and young stellar variability in the Large Magellanic Cloud (2020)
Thesis
Zivkov, V. (2020). Pre-main-sequence populations and young stellar variability in the Large Magellanic Cloud. (Thesis). Keele University

Detailed studies of intermediate- and low-mass pre-main-sequence (PMS) stars outside the Galaxy have so far been conducted only for small targeted regions harbouring known star formation complexes. This work presents a comprehensive analysis of the P... Read More about Pre-main-sequence populations and young stellar variability in the Large Magellanic Cloud.

HATS-47b, HATS-48Ab, HATS-49b and HATS-72b: Four Warm Giant Planets Transiting K Dwarfs (2020)
Journal Article
Hellier. (2020). HATS-47b, HATS-48Ab, HATS-49b and HATS-72b: Four Warm Giant Planets Transiting K Dwarfs. Astronomical Journal, https://doi.org/10.3847/1538-3881/ab7821

We report the discovery of four transiting giant planets around K dwarfs. The planets HATS-47b, HATS-48Ab, HATS49b, and HATS-72b have masses of 0.369+ 0.0210.031MJ, 0.243+ 0.0300.022 MJ, 0.353+ 0.0270.038 MJ, and 0.1254. 0.0039 MJ, respectively, and... Read More about HATS-47b, HATS-48Ab, HATS-49b and HATS-72b: Four Warm Giant Planets Transiting K Dwarfs.

A multiplicity study of transiting exoplanet host stars: II. Revised properties of transiting planetary systems with companions (2020)
Journal Article
Southworth, J., Bohn, A., Kenworthy, M., Ginski, C., & Mancini, L. (2020). A multiplicity study of transiting exoplanet host stars: II. Revised properties of transiting planetary systems with companions. Astronomy & Astrophysics, 635, Article A74. https://doi.org/10.1051/0004-6361/201937334

Context. Binarity is a widespread phenomenon around solar-type stars, including the host stars of transiting extrasolar planets.

Aims. We performed a detailed study of six transiting planetary systems with relatively bright stars close enough to a... Read More about A multiplicity study of transiting exoplanet host stars: II. Revised properties of transiting planetary systems with companions.

A multiplicity study of transiting exoplanet host stars I. High-contrast imaging with VLT/SPHERE (2020)
Journal Article
Bohn, A., Southworth, J., Ginski, C., Kenworthy, M., Maxted, P., & Evans, D. (2020). A multiplicity study of transiting exoplanet host stars I. High-contrast imaging with VLT/SPHERE. Astronomy & Astrophysics, 635, Article A73. https://doi.org/10.1051/0004-6361/201937127

Context. Many main-sequence stars are part of multiple systems. The effect of stellar multiplicity on planet formation and migration, however, is poorly understood.

Aims. We study the multiplicity of stars hosting known transiting extra-solar plan... Read More about A multiplicity study of transiting exoplanet host stars I. High-contrast imaging with VLT/SPHERE.

The VMC survey – XXXVI. Young stellar variability in the Large Magellanic Cloud (2020)
Journal Article
Zivkov, V., Oliveira, J. M., Petr-Gotzens, M. G., Rubele, S., Cioni, M. L., Van Loon, J. T., …Sun, N. (2020). The VMC survey – XXXVI. Young stellar variability in the Large Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 494(1), 458 -486. https://doi.org/10.1093/mnras/staa626

Studies of young stellar objects (YSOs) in the Galaxy have found that a significant fraction exhibits photometric variability. However, no systematic investigation has been conducted on the variability of extragalactic YSOs. Here we present the first... Read More about The VMC survey – XXXVI. Young stellar variability in the Large Magellanic Cloud.

NGTS-10b: the shortest period hot Jupiter yet discovered (2020)
Journal Article
Smalley, B., McCormac, J., Gillen, E., Jackman, J. A. G., Brown, D. J. A., Bayliss, D., …West, R. G. (2020). NGTS-10b: the shortest period hot Jupiter yet discovered. Monthly Notices of the Royal Astronomical Society, 493(1), 126-140. https://doi.org/10.1093/mnras/staa115

We report the discovery of a new ultrashort period (USP) transiting hot Jupiter from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius of 2.162+0.092-0.107?MJ and 1.205+0.117-0.083?RJ and orbits its host star with a period of... Read More about NGTS-10b: the shortest period hot Jupiter yet discovered.

The infrared view of dust and molecules around V4334 Sgr (Sakurai's Object): a 20-year retrospective (2020)
Journal Article
(2020). The infrared view of dust and molecules around V4334 Sgr (Sakurai's Object): a 20-year retrospective. Monthly Notices of the Royal Astronomical Society, 1277-1291. https://doi.org/10.1093/mnras/staa343

We present an analysis of the evolution of circumstellar dust and molecules in the environment of the very late thermal pulse object V4334 Sgr (Sakurai’s Object) over a ~20-year period, drawing on ground-, airborne- and space-based infrared photometr... Read More about The infrared view of dust and molecules around V4334 Sgr (Sakurai's Object): a 20-year retrospective.

The Formation of a 70 M ? Black Hole at High Metallicity (2020)
Journal Article
Hirschi. (2020). The Formation of a 70 M ? Black Hole at High Metallicity. Astrophysical Journal, 113 -113. https://doi.org/10.3847/1538-4357/ab6d77

A 70 black hole (BH) was discovered in the Milky Way disk in a long-period detached binary system (LB-1) with a high-metallicity 8 B star companion. Current consensus on the formation of BHs from high-metallicity stars limits the BH mass to be below... Read More about The Formation of a 70 M ? Black Hole at High Metallicity.

TICs 167692429 and 220397947: the first compact hierarchical triple stars discovered with TESS (2020)
Journal Article
Maxted. (2020). TICs 167692429 and 220397947: the first compact hierarchical triple stars discovered with TESS. Monthly Notices of the Royal Astronomical Society, 5005 - 5023. https://doi.org/10.1093/mnras/staa495

We report the discovery and complex analyses of the first two compact hierarchical triple star systems discovered with TESS in or near its southern continuous viewing zone during Year 1. Both TICs 167692429 and 220397947 were previously unknown eclip... Read More about TICs 167692429 and 220397947: the first compact hierarchical triple stars discovered with TESS.

Spectroscopy of hot ? Doradus and A–F hybrid Kepler candidates close to the hot border of the d Scuti instability strip (2020)
Journal Article
Smalley. (2020). Spectroscopy of hot ? Doradus and A–F hybrid Kepler candidates close to the hot border of the d Scuti instability strip. Monthly Notices of the Royal Astronomical Society, 4518 - 4532. https://doi.org/10.1093/mnras/staa399

If ? Dor-type pulsations are driven by the convective blocking mechanism, a convective envelope at a sufficient depth is essential. There are several hot ? Dor and hybrid star candidates in which there should not be an adequate convective envelope to... Read More about Spectroscopy of hot ? Doradus and A–F hybrid Kepler candidates close to the hot border of the d Scuti instability strip.

GJ 1252 b: A 1.2 R? Planet Transiting an M3 Dwarf at 20.4 pc (2020)
Journal Article
Hellier. (2020). GJ 1252 b: A 1.2 R? Planet Transiting an M3 Dwarf at 20.4 pc. Astrophysical Journal, https://doi.org/10.3847/2041-8213/ab7020

We report the discovery of GJ 1252 b, a planet with a radius of 1.193 ± 0.074 and an orbital period of 0.52 days around an M3-type star (0.381 ± 0.019 , 0.391 ± 0.020 ) located 20.385 ± 0.019 pc away. We use Transiting Exoplanet Survey Satellite (TES... Read More about GJ 1252 b: A 1.2 R? Planet Transiting an M3 Dwarf at 20.4 pc.

A new mass-loss rate prescription for red supergiants (2020)
Journal Article
Beasor, E. R., Davies, B., Smith, N., Van Loon, J. T., Gehrz, R. D., & Figer, D. F. (2020). A new mass-loss rate prescription for red supergiants. Monthly Notices of the Royal Astronomical Society, 492(4), 5994 - 6006. https://doi.org/10.1093/mnras/staa255

Evolutionary models have shown the substantial effect that strong mass-loss rates ($\dotM$s) can have on the fate of massive stars. Red supergiant (RSG) mass-loss is poorly understood theoretically, and so stellar models rely on purely empirical $\do... Read More about A new mass-loss rate prescription for red supergiants.

Benzyne in V4334 Sqr: A Quest for the Ring with SOFIA/EXES (2020)
Journal Article
Woodward, C. E., Evans, A., Richter, M., DeWitt, C. N., Montiel, E., Banerjee, D. P. K., …Worters, H. (2020). Benzyne in V4334 Sqr: A Quest for the Ring with SOFIA/EXES. Astronomical Journal, 159(3), Article ARTN 87. https://doi.org/10.3847/1538-3881/ab67c2

Large aromatic molecules are ubiquitous in both circumstellar and interstellar environments. Detection of small aromatic molecules, such as benzene (C6H6) and benzyne (C6H4), are rare in astrophysical environments. Detection of such species will have... Read More about Benzyne in V4334 Sqr: A Quest for the Ring with SOFIA/EXES.

The January 2016 eruption of recurrent nova LMC 1968 (2020)
Journal Article
(2020). The January 2016 eruption of recurrent nova LMC 1968. Monthly Notices of the Royal Astronomical Society, 655-679. https://doi.org/10.1093/mnras/stz2960

We present a comprehensive review of all observations of the eclipsing recurrent Nova LMC 1968 in the Large Magellanic Cloud which was previously observed in eruption in 1968, 1990, 2002, 2010, and most recently in 2016. We derive a probable recurren... Read More about The January 2016 eruption of recurrent nova LMC 1968.

The Gaia-ESO Survey: a new approach to chemically characterising young open clusters - I. Stellar parameters, and iron-peak, nd proton-capture elements (2020)
Journal Article
Jeffries. (2020). The Gaia-ESO Survey: a new approach to chemically characterising young open clusters - I. Stellar parameters, and iron-peak, nd proton-capture elements. Astronomy and Astrophysics, A34 - A34. https://doi.org/10.1051/0004-6361/201937055

Context. Open clusters are recognised as excellent tracers of Galactic thin-disc properties. At variance with intermediate-age and old open clusters, for which a significant number of studies is now available, clusters younger than ?150 Myr have been... Read More about The Gaia-ESO Survey: a new approach to chemically characterising young open clusters - I. Stellar parameters, and iron-peak, nd proton-capture elements.

Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi (2020)
Journal Article
J. Chaplin, W., M. Serenelli, A., Miglio, A., Morel, T., Mackereth, J. T., Vincenzo, F., …Yıldız, M. (2020). Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi. Nature Astronomy, https://doi.org/10.1038/s41550-019-0975-9

Over the course of its history, the Milky Way has ingested multiple smaller satellite galaxies. While these accreted stellar populations can be forensically identified as kinematically distinct structures within the Galaxy, it is difficult in general... Read More about Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi.

Structural and Dynamical Analysis of 0.1 pc Cores and Filaments in the 30 Doradus-10 Giant Molecular Cloud (2020)
Journal Article
Indebetouw, R., Wong, T., Rosie Chen, C., Kepley, A., Lebouteiller, V., Madden, S., & Oliveira, J. (2020). Structural and Dynamical Analysis of 0.1 pc Cores and Filaments in the 30 Doradus-10 Giant Molecular Cloud. Astrophysical Journal, 888(2), Article 56. https://doi.org/10.3847/1538-4357/ab5db7

High-resolution (<0.1 pc) Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 30Dor-10 molecular cloud 15 pc north of R136 are presented. The 12CO 2–1 emission morphology contains clumps near the locations of known mid-IR massive...

The highly inflated giant planet WASP-174b (2020)
Journal Article
Mancini, L., Sarkis, P., Henning, T., Bakos, G., Bayliss, D., Bento, J., …Tan, T. (2020). The highly inflated giant planet WASP-174b. Astronomy & Astrophysics, 633, Article A30. https://doi.org/10.1051/0004-6361/201936532

The transiting exoplanetary system WASP-174 was reported to be composed by a main-sequence F star (V = 11.8 mag) and a giant planet, WASP-174b (orbital period P-orb = 4.23 days). However only an upper limit was placed on the planet mass (<1.3 M-Jup),...