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Barry Smalley's Outputs (111)

Variability and stellar pulsation incidence in Am/Fm stars using TESS and Gaia data (2024)
Journal Article
Durfeldt-Pedros, O., Antoci, V., Smalley, B., Murphy, S., Posilek, N., & Niemczura, E. (2024). Variability and stellar pulsation incidence in Am/Fm stars using TESS and Gaia data. Astronomy and Astrophysics, 690, Article A104. https://doi.org/10.1051/0004-6361/202349076

Aims. We aim to study chemically peculiar Am and Fm stars, distinguished by their unique abundance patterns, which are crucial for studying mixing processes in intermediate-mass stars. These stars provide a window into the atomic diffusion in their s... Read More about Variability and stellar pulsation incidence in Am/Fm stars using TESS and Gaia data.

Variability and stellar pulsation incidence in Am and Fm stars using TESS and Gaia data (2024)
Journal Article
Dürfeldt-Pedros, O., Antoci, V., Smalley, B., Murphy, S., Posilek, N., & Niemczura, E. (in press). Variability and stellar pulsation incidence in Am and Fm stars using TESS and Gaia data. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/202349076

Background
Remote and digital consulting in primary care has rapidly expanded since March 2020. It is important to understand patient experiences, particularly for those living with complex long-term conditions, to identify how care can best be deli... Read More about Variability and stellar pulsation incidence in Am and Fm stars using TESS and Gaia data.

An extended low-density atmosphere around the Jupiter-sized planet WASP-193 b (2024)
Journal Article
Barkaoui, K., Pozuelos, F. J., Hellier, C., Smalley, B., Nielsen, L. D., Niraula, P., …West, R. G. (in press). An extended low-density atmosphere around the Jupiter-sized planet WASP-193 b. Nature Astronomy, https://doi.org/10.1038/s41550-024-02259-y

Gas giants transiting bright nearby stars provide crucial insights into planetary system formation and evolution mechanisms. Most of these planets show certain average characteristics, serving as benchmarks for our understanding of planetary systems.... Read More about An extended low-density atmosphere around the Jupiter-sized planet WASP-193 b.

TESS Cycle 2 observations of roAp stars with 2-min cadence data (2023)
Journal Article
Holdsworth, D. L., Cunha, M. S., Lares-Martiz, M., Kurtz, D. W., Antoci, V., Forteza, S. B., …Seager, S. (2024). TESS Cycle 2 observations of roAp stars with 2-min cadence data. Monthly Notices of the Royal Astronomical Society, 527(4), 9548-9580. https://doi.org/10.1093/mnras/stad3800

We present the results of a systematic search of the Transiting Exoplanet Survey Satellite (TESS) 2-min cadence data for new rapidly oscillating Ap (roAp) stars observed during the Cycle 2 phase of its mission. We find seven new roAp stars previously... Read More about TESS Cycle 2 observations of roAp stars with 2-min cadence data.

T Tauri stars in the SuperWASP and NSVS surveys II. Spectral modelling (2023)
Journal Article
Hambálek, L., Krushevska, V., Pribulla, T., Vaňko, M., Budaj, J., Fiorucci, M., …Smalley, B. (2023). T Tauri stars in the SuperWASP and NSVS surveys II. Spectral modelling. Monthly Notices of the Royal Astronomical Society, 524(3), 3582-3595. https://doi.org/10.1093/mnras/stad2133

We present results from long-term spectroscopic monitoring of 21 T-Tauri stars located in the Taurus–Auriga star-forming region (SFR). We combine medium and high-dispersion Echelle spectroscopy obtained at the Stará Lesná, Skalnaté Pleso (both in Slo... Read More about T Tauri stars in the SuperWASP and NSVS surveys II. Spectral modelling.

Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS: TOI-615b, TOI-622b, and TOI-2641b (2023)
Journal Article
Psaridi, A., Bouchy, F., Lendl, M., Akinsanmi, B., Stassun, K. G., Smalley, B., …Zapata, A. (2023). Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS: TOI-615b, TOI-622b, and TOI-2641b. Astronomy & Astrophysics, 675, A39. https://doi.org/10.1051/0004-6361/202346406

While the sample of confirmed exoplanets continues to grow, the population of transiting exoplanets around early-type stars is still limited. These planets allow us to investigate the planet properties and formation pathways over a wide range of stel... Read More about Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS: TOI-615b, TOI-622b, and TOI-2641b.

Solar-to-supersolar sodium and oxygen absolute abundances for a ‘hot Saturn’ orbiting a metal-rich star (2022)
Journal Article
Nikolov, N. K., Sing, D. K., Spake, J. J., Smalley, B., Goyal, J. M., Mikal-Evans, T., …Mayne, N. J. (2022). Solar-to-supersolar sodium and oxygen absolute abundances for a ‘hot Saturn’ orbiting a metal-rich star. Monthly Notices of the Royal Astronomical Society, 515(2), 3037-3058. https://doi.org/10.1093/mnras/stac1530

We present new analysis of infrared transmission spectroscopy of the cloud-free hot-Saturn WASP-96b performed with the Hubble and Spitzer Space Telescopes (HST and Spitzer). The WASP-96b spectrum exhibits the absorption feature from water in excellen... Read More about Solar-to-supersolar sodium and oxygen absolute abundances for a ‘hot Saturn’ orbiting a metal-rich star.

TESS Cycle 1 observations of roAp stars with 2-min cadence data (2021)
Journal Article
Smalley, L. Holdsworth, D., S. Cunha, M., W. Kurtz, D., Antoci, V., R. Hey, D., …Vanderspek, R. (2021). TESS Cycle 1 observations of roAp stars with 2-min cadence data. Monthly Notices of the Royal Astronomical Society, 506(1), 1073-1110. https://doi.org/10.1093/mnras/stab1578

We present the results of a systematic search for new rapidly oscillating Ap (roAp) stars using the 2-min cadence data collected by the Transiting Exoplanet Survey Satellite (TESS) during its Cycle 1 observations. We identify 12 new roAp stars. Among... Read More about TESS Cycle 1 observations of roAp stars with 2-min cadence data.

Ground-based Transmission Spectroscopy with VLT FORS2: Evidence for Faculae and Clouds in the Optical Spectrum of the Warm Saturn WASP-110b (2021)
Journal Article
Smalley. (2021). Ground-based Transmission Spectroscopy with VLT FORS2: Evidence for Faculae and Clouds in the Optical Spectrum of the Warm Saturn WASP-110b. Astronomical Journal, https://doi.org/10.3847/1538-3881/ac01da

We present a ground-based optical transmission spectrum for the warm Saturn-mass exoplanet WASP-110b from two transit observations made with the FOcal Reducer and Spectrograph on the Very Large Telescope. The spectrum covers the wavelength range from... Read More about Ground-based Transmission Spectroscopy with VLT FORS2: Evidence for Faculae and Clouds in the Optical Spectrum of the Warm Saturn WASP-110b.

KIC 5950759: a high-amplitude δ Sct star with amplitude and frequency modulation near the terminal age main sequence (2021)
Journal Article
M. Bowman, D., Hermans, J., Daszyńska-Daszkiewicz, J., L. Holdsworth, D., Tkachenko, A., J. Murphy, S., …W. Kurtz, D. (2021). KIC 5950759: a high-amplitude δ Sct star with amplitude and frequency modulation near the terminal age main sequence. Monthly Notices of the Royal Astronomical Society, 504(3), 4039-4053. https://doi.org/10.1093/mnras/stab1124

Amongst the intermediate mass pulsating stars known as d Sct stars is a subset of high-amplitude and predominantly radial-mode pulsators known as high-amplitude d Sct (HADS) stars. From more than 2000 d Sct stars observed by the Kepler space mission,... Read More about KIC 5950759: a high-amplitude δ Sct star with amplitude and frequency modulation near the terminal age main sequence.

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.

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.

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.

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.

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.

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.

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.

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.