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Characterization of transiting exoplanets and their host stars by K2 (2018)
Thesis
Močnik, T. Characterization of transiting exoplanets and their host stars by K2. (Thesis). Keele University. https://keele-repository.worktribe.com/output/412317

The WASP project has discovered many transiting gas giant exoplanets. Some of these exoplanet systems have been observed by the K2 space-based telescope. The much higher photometric precision, shorter cadence and extended continuous follow-up observa... Read More about Characterization of transiting exoplanets and their host stars by K2.

NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf (2018)
Journal Article
Raynard, L., Goad, M. R., Gillen, E., Nielsen, L. D., Watson, C. A., Thompson, A. P. G., McCormac, J., Bayliss, D., Soto, M., Csizmadia, S., Chaushev, A., Burleigh, M. R., Alexander, R., Armstrong, D. J., Bouchy, F., Briegal, J. T., Cabrera, J., Casewell, S. L., Chazelas, B., Cooke, B. F., …Wheatley, P. J. (2018). NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf. Monthly Notices of the Royal Astronomical Society, 481(4), 4960-4970. https://doi.org/10.1093/mnras/sty2581

We report the discovery of NGTS-2b, an inflated hot-Jupiter transiting a bright F5V star (2MASS J14202949 - 3112074; Teff = 6478+94-89 K), discovered as part of the Next Generation Transit Survey (NGTS). The planet is in a P = 4.51?d orbit with mass... Read More about NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf.

T Tauri stars in the SuperWASP and NSVS surveys (2018)
Journal Article
Hambalek, L., Vanko, M., Paunzen, E., & Smalley, B. (2019). T Tauri stars in the SuperWASP and NSVS surveys. Monthly Notices of the Royal Astronomical Society, 483(2), 1642 - 1654. https://doi.org/10.1093/mnras/sty3151

We present a study of the long-term optical variability of young T Tauri stars using previously unpublished data from the Super-Wide Angle Search for Planets (SuperWASP) project. Other publicly available photometry from the Northern Sky Variability S... Read More about T Tauri stars in the SuperWASP and NSVS surveys.

The VMC Survey. XXXII. Pre-main-sequence populations in the Large Magellanic Cloud (2018)
Journal Article
Van Loon, J., & Oliveira, J. (2018). The VMC Survey. XXXII. Pre-main-sequence populations in the Large Magellanic Cloud. Astronomy and Astrophysics Supplement Series, https://doi.org/10.1051/0004-6361/201833951

Context
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. The VISTA Survey of the Magellanic Clouds (... Read More about The VMC Survey. XXXII. Pre-main-sequence populations in the Large Magellanic Cloud.

Deciphering the atmosphere of HAT-P-12b: solving discrepant results (2018)
Journal Article
Alexoudi, X., Mallonn, M., von Essen, C., Turner, J., Keles, E., Southworth, J., Mancini, L., Ciceri, S., Granzer, T., Denker, C., Dineva, E., & Strassmeier, K. (2018). Deciphering the atmosphere of HAT-P-12b: solving discrepant results. Astronomy & Astrophysics, 620, Article A142. https://doi.org/10.1051/0004-6361/201833691

Context. Two independent investigations of the atmosphere of the hot Jupiter HAT-P-12b by two different groups resulted in discrepant solutions. Using broad-band photometry from the ground, one study found a flat and featureless transmission spectrum... Read More about Deciphering the atmosphere of HAT-P-12b: solving discrepant results.

An ultrafast inflow in the luminous Seyfert PG1211+143 (2018)
Journal Article
(2018). An ultrafast inflow in the luminous Seyfert PG1211+143. Monthly Notices of the Royal Astronomical Society, 1832 -1838. https://doi.org/10.1093/mnras/sty2359

Blueshifted absorption lines in the X-ray spectra of an active galactic nucleus (AGN) show that ultrafast outflows with typical velocities v ~ 0.1c are a common feature of these luminous objects. Such powerful AGN winds offer an explanation of the ob... Read More about An ultrafast inflow in the luminous Seyfert PG1211+143.

A rapid occultation event in NGC 3227 (2018)
Journal Article
(2018). A rapid occultation event in NGC 3227. Monthly Notices of the Royal Astronomical Society, 2470 -2478. https://doi.org/10.1093/mnras/sty2447

NGC 3227 exhibits rapid flux and spectral variability in the X-ray band. To understand this behaviour, we conducted a coordinated observing campaign using 320 ks of XMM–Newton exposures together with 160 ks of overlapping NuSTAR observations, spannin... Read More about A rapid occultation event in NGC 3227.

A search for radius inflation among active M-dwarfs in Praesepe (2018)
Journal Article
Jackson, R. J., Jeffries, R. D., Deliyannis, C. P., Sun, Q., & Douglas, S. T. (2019). A search for radius inflation among active M-dwarfs in Praesepe. Monthly Notices of the Royal Astronomical Society, 483(1), 1125-1138. https://doi.org/10.1093/mnras/sty3184

Rotation periods from Kepler K2 are combined with projected rotation velocities from the WIYN 3.5-m telescope, to determine projected radii for fast-rotating, low-mass ($0.15 \leq M/M_{\odot} \leq 0.6$) members of the Praesepe cluster. A maximum like... Read More about A search for radius inflation among active M-dwarfs in Praesepe.

Early formation of carbon monoxide in the Centaurus A supernova SN 2016adj (2018)
Journal Article
(2018). Early formation of carbon monoxide in the Centaurus A supernova SN 2016adj. Monthly Notices of the Royal Astronomical Society, 806-808. https://doi.org/10.1093/mnras/sty2255

We present near-infrared spectroscopy of the NGC 5128 supernova SN 2016adj in the first 2 months following discovery. We report the detection of first overtone carbon monoxide emission at ~58.2 d after discovery, one of the earliest detections of CO... Read More about Early formation of carbon monoxide in the Centaurus A supernova SN 2016adj.

Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys (2018)
Journal Article
Schanche, N., Collier Cameron, A., Hébrard, G., Nielsen, L., Triaud, A. H. M. J., Almenara, J. M., Alsubai, K. A., Anderson, D. R., Armstrong, D. J., Barros, S. C. C., Bouchy, F., Boumis, P., Brown, D. J. A., Faedi, F., Hay, K., Hebb, L., Kiefer, F., Mancini, L., Maxted, P. F. L., Palle, E., …Wheatley, P. J. Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys. https://doi.org/10.1093/mnras/sty3146. Manuscript submitted for publication

Since the start of the Wide Angle Search for Planets (WASP) program, more than 160 transiting exoplanets have been discovered in the WASP data. In the past, possible transit-like events identified by the WASP pipeline have been vetted by human inspec... Read More about Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys.

Discovery of WASP-174b: Doppler tomography of a near-grazing transit (2018)
Journal Article
Maxted, Hellier, & Smalley. (2018). Discovery of WASP-174b: Doppler tomography of a near-grazing transit. Monthly Notices of the Royal Astronomical Society, 5307-5313. https://doi.org/10.1093/mnras/sty2197

We report the discovery and tomographic detection of WASP-174b, a planet with a near-grazing transit on a 4.23-d orbit around a V = 11.9, F6V star with [Fe/H] = 0.09 ± 0.09. The planet is in a moderately misaligned orbit with a sky-projected spin–orb... Read More about Discovery of WASP-174b: Doppler tomography of a near-grazing transit.

X-ray powder diffraction study of the stability of clathrate hydrates in the presence of salts with relevance to the Martian cryosphere (2018)
Journal Article
Safi, E., Thompson, S. P., Evans, A., Day, S. J., Murray, C. A., Baker, A. R., Oliveira, J. M., & Van Loon, J. T. (2019). X-ray powder diffraction study of the stability of clathrate hydrates in the presence of salts with relevance to the Martian cryosphere. Geochimica et Cosmochimica Acta, 245, 304-315. https://doi.org/10.1016/j.gca.2018.10.034

Water on the present day Martian surface is thought to exist in two thermally distinct sub-surface reservoirs: as ice in the cryosphere and as groundwater located deeper in the crust. These sub-surface environments are thought to contain saline, rath... Read More about X-ray powder diffraction study of the stability of clathrate hydrates in the presence of salts with relevance to the Martian cryosphere.

Resolving the X-Ray Obscuration in a Low-flux Observation of the Quasar PDS 456 (2018)
Journal Article
(2018). Resolving the X-Ray Obscuration in a Low-flux Observation of the Quasar PDS 456. Astrophysical Journal, 38 -38. https://doi.org/10.3847/1538-4357/aae30c

Simultaneous XMM-Newton , NuSTAR , and HST observations, performed in 2017 March, of the nearby ( z = 0.184) luminous quasar PDS 456 are presented. PDS 456 had a low X-ray flux compared to past observations, where the first of the two new XMM-Newton... Read More about Resolving the X-Ray Obscuration in a Low-flux Observation of the Quasar PDS 456.

Non-standard s-process in massive rotating stars (2018)
Journal Article
Hirschi, R. (2018). Non-standard s-process in massive rotating stars. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/201833283

Context
Recent studies show that rotation significantly affects the s-process in massive stars.

Aims
We provide tables of yields for non-rotating and rotating massive stars between 10 and 150 M? at Z = 10-3 ([Fe/H] = -1.8). Tables for different... Read More about Non-standard s-process in massive rotating stars.

The VLT-FLAMES Tarantula Survey. XXIX. Massive star formation in the local 30 Doradus starburst (2018)
Journal Article
Van Loon. (2018). The VLT-FLAMES Tarantula Survey. XXIX. Massive star formation in the local 30 Doradus starburst. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201833433

The 30 Doradus (30 Dor) nebula in the Large Magellanic Cloud (LMC) is the brightest HII region in the Local Group and a prototype starburst similar to those found in high redshift galaxies. It is thus a stepping stone to understand the complex format... Read More about The VLT-FLAMES Tarantula Survey. XXIX. Massive star formation in the local 30 Doradus starburst.

WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts (2018)
Journal Article
Lendl, M., Anderson, D. R., Bonfanti, A., Bouchy, F., Burdanov, A., Collier Cameron, A., Delrez, L., Gillon, M., Hellier, C., Jehin, E., Maxted, P., Dyregaard Nielsen, L., Pepe, F., Pollacco, D., Queloz, D., Ségransan, D., Southworth, J., Smalley, B., Thompson, S., Turner, O., …West, R. G. (2019). WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts. Monthly Notices of the Royal Astronomical Society, 482(1), 301 -312. https://doi.org/10.1093/mnras/sty2667

We report the discovery of four transiting hot Jupiters, WASP-147, WASP-160B, WASP-164, and WASP-165 from the WASP survey. WASP-147b is a near Saturn-mass (MP = 0.28MJ) object with a radius of 1.11RJ orbiting a G4 star with a period of 4.6 d. WASP-16... Read More about WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts.

Evidence for conservative mass transfer in the classical Algol system d Librae from its surface carbon-to-nitrogen abundance ratio (2018)
Journal Article
Dervişoğlu, A., Pavlovski, K., Lehmann, H., Southworth, J., & Bewsher, D. (2018). Evidence for conservative mass transfer in the classical Algol system d Librae from its surface carbon-to-nitrogen abundance ratio. Monthly Notices of the Royal Astronomical Society, 481(4), 5660 -5674. https://doi.org/10.1093/mnras/sty2684

Algol-type binary systems are the product of rapid mass transfer between the initially more massive component to its companion. It is still unknown whether the process is conservative, or whether substantial mass is lost from the system. The history... Read More about Evidence for conservative mass transfer in the classical Algol system d Librae from its surface carbon-to-nitrogen abundance ratio.

ALMA reveals the aftermath of a white dwarf-brown dwarf merger in CK Vulpeculae (2018)
Journal Article
Eyres, S. P. S., Evans, A., Zijlstra, A., Avison, A., Gehrz, R. D., Hajduk, M., Starrfield, S., Mohamed, S., Woodward, C. E., & Wagner, R. M. (2018). ALMA reveals the aftermath of a white dwarf-brown dwarf merger in CK Vulpeculae. Monthly Notices of the Royal Astronomical Society, 481(4), 4931-4939. https://doi.org/10.1093/mnras/sty2554

We present Atacama Large Millimeter–Submillimeter Array (ALMA) observations of CK Vulpeculae which is identified with ‘Nova Vulpeculae 1670’. They trace obscuring dust in the inner regions of the associated nebulosity. The dust forms two cocoons, eac... Read More about ALMA reveals the aftermath of a white dwarf-brown dwarf merger in CK Vulpeculae.