The TESS light curve of AI Phoenicis (2020)
Journal Article
Maxted, P. F. L., Gaulme, P., Graczyk, D., Hełminiak, K. G., Johnston, C., Orosz, J. A., …Chaplin, W. J. (2020). The TESS light curve of AI Phoenicis. Monthly Notices of the Royal Astronomical Society, 498(1), 332-343. https://doi.org/10.1093/mnras/staa1662

Accurate masses and radii for normal stars derived from observations of detached eclipsing binary stars are of fundamental importance for testing stellar models and may be useful for calibrating free parameters in these model if the masses and radii... Read More about The TESS light curve of AI Phoenicis.

Relative Importance of Convective Uncertainties in Massive Stars (2020)
Journal Article
Kaiser, E. A., Hirschi, R., Arnett, W. D., Georgy, C., Scott, L. J. A., & Cristini, A. (2020). Relative Importance of Convective Uncertainties in Massive Stars. Monthly Notices of the Royal Astronomical Society, 496(2), 1967-1989. https://doi.org/10.1093/mnras/staa1595

In this work, we investigate the impact of uncertainties due to convective boundary mixing (CBM), commonly called ‘overshoot’, namely the boundary location and the amount of mixing at the convective boundary, on stellar structure and evolution. For t... Read More about Relative Importance of Convective Uncertainties in Massive Stars.

IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane (2020)
Journal Article
Wright. (2020). IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/201937333

The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys, IPHAS and UVEX, based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. Here, we present the IGAPS point source catalogue. It contains... Read More about IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane.

Black hole inconsistencies? (2020)
Working Paper
Austin, J. Black hole inconsistencies?

For large enough astrophysical objects, internal pressures are insufficient to prevent gravitational collapse to sizes smaller than a critical radius where the magnitude of escape velocity is equal to the speed of light. In coordinates natural for di... Read More about Black hole inconsistencies?.

The velocity structure of Cygnus OB2 (2020)
Journal Article
Arnold, B., Goodwin, S. P., & Wright, N. J. (2020). The velocity structure of Cygnus OB2. Monthly Notices of the Royal Astronomical Society, 495(3), 3474-3481. https://doi.org/10.1093/mnras/staa1403

The kinematic structure of the Cygnus OB2 association is investigated. No evidence of expansion or contraction is found at any scale within the region. Stars that are within $\sim$ 0.5 parsecs of one another are found to have more similar velocities... Read More about The velocity structure of Cygnus OB2.

Large-scale changes of the cloud coverage in the e Indi Ba,Bb system (2020)
Journal Article
Hitchcock, J. A., Helling, C., Scholz, A., Hodosan, G., Dominik, M., Hundertmark, M., …Collaboration, T. M. (2020). Large-scale changes of the cloud coverage in the e Indi Ba,Bb system. Monthly Notices of the Royal Astronomical Society, 495(4), 3881-3899. https://doi.org/10.1093/mnras/staa1344

We present the results of 14 nights of I-band photometric monitoring of the nearby brown dwarf binary, e Indi Ba,Bb. Observations were acquired over 2 months, and total close to 42 hours of coverage at a typically high cadence of 1.4 minutes. At a se... Read More about Large-scale changes of the cloud coverage in the e Indi Ba,Bb system.

Discovery of ß Cep pulsations in the eclipsing binary V453 Cygni (2020)
Journal Article
Southworth, J., Bowman, D. M., Tkachenko, A., & Pavlovski, K. (2020). Discovery of ß Cep pulsations in the eclipsing binary V453 Cygni. Monthly Notices of the Royal Astronomical Society: Letters, 497(1), L19–L23. https://doi.org/10.1093/mnrasl/slaa091

V453 Cyg is an eclipsing binary containing 14 and 11 $\, \rm M_ødot$ stars in an eccentric short-period orbit. We have discovered ß Cep-type pulsations in this system using Transiting Exoplanet Survey Satellite data. We identify seven significant pul... Read More about Discovery of ß Cep pulsations in the eclipsing binary V453 Cygni.

COBRaS: The e-MERLIN 21 cm Legacy survey of Cygnus OB2 (2020)
Journal Article
Morford, J. C., Fenech, D. M., Prinja, R. K., Blomme, R., Yates, J. A., Drake, J. J., …Vink, J. S. (2020). COBRaS: The e-MERLIN 21 cm Legacy survey of Cygnus OB2. Astronomy & Astrophysics, 637, Article ARTN A64. https://doi.org/10.1051/0004-6361/201731379

Context. The role of massive stars is central to an understanding of galactic ecology. It is important to establish the details of how massive stars provide radiative, chemical, and mechanical feedback in galaxies. Central to these issues is an under... Read More about COBRaS: The e-MERLIN 21 cm Legacy survey of Cygnus OB2.

The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. I. Survey Overview and First Results for Andromeda I (2020)
Journal Article
Saremi, E., Javadi, A., Van Loon, J., Khosroshahi, H., Molaeinezhad, A., McDonald, I., …Gozaliasl, G. (2020). The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. I. Survey Overview and First Results for Andromeda I. Astrophysical Journal, 894(2), Article ARTN 135. https://doi.org/10.3847/1538-4357/ab88a2

An optical monitoring survey in nearby dwarf galaxies was carried out with the 2.5 m Isaac Newton Telescope. Fifty-five dwarf galaxies and four isolated globular clusters in the Local Group were observed with the Wide Field Camera. The main aims of t... Read More about The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. I. Survey Overview and First Results for Andromeda I.

The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses (2020)
Journal Article
Tkachenko, A., Pavlovski, K., Johnston, C., Pedersen, M., Michielsen, M., Bowman, D., …Aerts, C. (2020). The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses. Astronomy and Astrophysics, 637, Article A60. https://doi.org/10.1051/0004-6361/202037452

Context. Eclipsing, spectroscopic double-lined binary star systems are excellent laboratories for calibrating theories of stellar interior structure and evolution. Their precise and accurate masses and radii measured from binary dynamics offer model-... Read More about The mass discrepancy in intermediate- and high-mass eclipsing binaries: The need for higher convective core masses.

Very regular high-frequency pulsation modes in young intermediate-mass stars (2020)
Journal Article
Bedding, T. R., Murphy, S. J., Hey, D. R., Huber, D., Li, T., Smalley, B., …Vanderspek, R. K. (2020). Very regular high-frequency pulsation modes in young intermediate-mass stars. Nature, 581, 147 - 151. https://doi.org/10.1038/s41586-020-2226-8

Asteroseismology probes the internal structures of stars by using their natural pulsation frequencies1. It relies on identifying sequences of pulsation modes that can be compared with theoretical models, which has been done successfully for many clas... Read More about Very regular high-frequency pulsation modes in young intermediate-mass stars.

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.

TOI-1338: TESS' First Transiting Circumbinary Planet (2020)
Journal Article
Kostov, V. B., Orosz, J. A., Feinstein, A. D., Welsh, W. F., Cukier, W., Haghighipour, N., …van der Straeten, T. (2020). TOI-1338: TESS' First Transiting Circumbinary Planet. Astronomical Journal, 159(6), https://doi.org/10.3847/1538-3881/ab8a48

We report the detection of the first circumbinary planet (CBP) found by Transiting Exoplanet Survey Satellite (TESS). The target, a known eclipsing binary, was observed in sectors 1 through 12 at 30 minute cadence and in sectors 4 through 12 at 2 min... Read More about TOI-1338: TESS' First Transiting Circumbinary Planet.

TOI-1338: TESS' First Transiting Circumbinary Planet (2020)
Journal Article
Maxted. (2020). TOI-1338: TESS' First Transiting Circumbinary Planet. Astronomical Journal, https://doi.org/10.3847/1538-3881/ab8a48

We report the detection of the first circumbinary planet (CBP) found by Transiting Exoplanet Survey Satellite (TESS). The target, a known eclipsing binary, was observed in sectors 1 through 12 at 30 minute cadence and in sectors 4 through 12 at 2 min... Read More about TOI-1338: TESS' First Transiting Circumbinary Planet.

Evolutionary roads leading to low effective spins, high black hole masses, and O1/O2 rates for LIGO/Virgo binary black holes (2020)
Journal Article
Belczynski, K., Klencki, J., Fields, C., Olejak, A., Berti, E., Meynet, G., …Lasota, J. (2020). Evolutionary roads leading to low effective spins, high black hole masses, and O1/O2 rates for LIGO/Virgo binary black holes. Astronomy and Astrophysics, 636, Article A104. https://doi.org/10.1051/0004-6361/201936528

All ten LIGO/Virgo binary black hole (BH-BH) coalescences reported following the O1/O2 runs have near-zero effective spins. There are only three potential explanations for this. If the BH spin magnitudes are large, then: (i) either both BH spin vecto... Read More about Evolutionary roads leading to low effective spins, high black hole masses, and O1/O2 rates for LIGO/Virgo binary black holes.

Lithium in T Coronae Borealis (2020)
Journal Article
(2020). Lithium in T Coronae Borealis. Astronomical Journal, https://doi.org/10.3847/1538-3881/ab8639

T Coronae Borealis is a recurrent, symbiotic nova system currently in quiescence between its periodic ˜80 yr cycle of eruptions. Observations during inter-outburst epochs provide an opportunity to study properties of the accretion disk and the M red... Read More about Lithium in T Coronae Borealis.

Detection of Na, K, and H2O in the hazy atmosphere of WASP-6b (2020)
Journal Article
Smalley. (2020). Detection of Na, K, and H2O in the hazy atmosphere of WASP-6b. Monthly Notices of the Royal Astronomical Society, 5449 - 5472. https://doi.org/10.1093/mnras/staa1078

We present new observations of the transmission spectrum of the hot Jupiter WASP-6b both from the ground with the Very Large Telescope FOcal Reducer and Spectrograph (FORS2) from 0.45 to 0.83 µm, and space with the Transiting Exoplanet Survey Satelli... Read More about Detection of Na, K, and H2O in the hazy atmosphere of WASP-6b.

A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS (2020)
Journal Article
Hellier. (2020). A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/201937179

We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R?) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed in the first sector of the... Read More about A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS.

The VMC Survey - XXXVII. Pulsation periods of dust-enshrouded AGB stars in the Magellanic Clouds (2020)
Journal Article
Groenewegen, M. A. T., Nanni, A., Cioni, M. L., Girardi, L., de Grijs, R., Ivanov, V. D., …Van Loon, J. T. (2020). The VMC Survey - XXXVII. Pulsation periods of dust-enshrouded AGB stars in the Magellanic Clouds. Astronomy and Astrophysics, 636, Article A48. https://doi.org/10.1051/0004-6361/201937271

Context. Variability is a key property of stars on the asymptotic giant branch (AGB). Their pulsation period is related to the luminosity and mass-loss rate of the star. Long-period variables (LPVs) and Mira variables are the most prominent of all ty... Read More about The VMC Survey - XXXVII. Pulsation periods of dust-enshrouded AGB stars in the Magellanic Clouds.

The dynamics of the γ Vel cluster and nearby Vela OB2 association (2020)
Journal Article
Armstrong, J. J., Wright, N., Jeffries, R., & Jackson, R. J. (2020). The dynamics of the γ Vel cluster and nearby Vela OB2 association. Monthly Notices of the Royal Astronomical Society, 494(4), 4794 -4801. https://doi.org/10.1093/mnras/staa939

The kinematics of low-mass stars in nearby OB associations can provide clues about their origins and evolution. Combining the precise positions, proper motions, and parallaxes given in the second Gaia Data Release with radial-velocity measurements ob... Read More about The dynamics of the γ Vel cluster and nearby Vela OB2 association.