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All Outputs (147)

EPOS Thematic Core Service Anthropogenic Hazards for SHEER project: maintain, process and manage your project research data (2017)
Journal Article
Orlecka-Sikora, B., Lasocki, S., Staszek, M., Olszewska, D., Urban, P., Jaroslawski, J., …Isherwood, C. (2017). EPOS Thematic Core Service Anthropogenic Hazards for SHEER project: maintain, process and manage your project research data

The main objective of the “Shale gas exploration and exploitation induced risks - SHEER” project (Horizon 2020, call LCE 16-2014) is to develop a probabilistic methodology to assess and mitigate the short- and the long-term environmental risks associ... Read More about EPOS Thematic Core Service Anthropogenic Hazards for SHEER project: maintain, process and manage your project research data.

High Resolution X-ray Spectroscopy of the Seyfert 1, Mrk 1040. Revealing the Failed Nuclear Wind with Chandra (2017)
Journal Article
(2017). High Resolution X-ray Spectroscopy of the Seyfert 1, Mrk 1040. Revealing the Failed Nuclear Wind with Chandra. Astrophysical Journal, https://doi.org/10.3847/1538-4357/aa5da1

High resolution X-ray spectroscopy of the warm absorber in the nearby X-ray bright Seyfert 1 galaxy, Mrk 1040 is presented. The observations were carried out in the 2013-2014 timeframe using the Chandra High Energy Transmission Grating with a total e... Read More about High Resolution X-ray Spectroscopy of the Seyfert 1, Mrk 1040. Revealing the Failed Nuclear Wind with Chandra.

Furanyl Cyclic Ethers: Single and Double Diastereoselectivity in the Synthesis of 2,4-Di and 2,4,5-Trisubstituted Tetrahydropyrans. (2017)
Journal Article
O'Brien, M., Tizzard, G., Coles, S., Cooper, D., & Robbins, E. (2017). Furanyl Cyclic Ethers: Single and Double Diastereoselectivity in the Synthesis of 2,4-Di and 2,4,5-Trisubstituted Tetrahydropyrans. Journal of Organic Chemistry, 3441-3455. https://doi.org/10.1021/acs.joc.6b02831

Combining the desymmetrization of a prochiral bis-hydroxymethyl group with the epimerization of a chiral furanyl ether in a single transformation, high levels of double diastereoselectivity have been achieved in a synthesis of 2,4,5-trisubstituted te... Read More about Furanyl Cyclic Ethers: Single and Double Diastereoselectivity in the Synthesis of 2,4-Di and 2,4,5-Trisubstituted Tetrahydropyrans..

ALMA observations of Molecules in Supernova 1987A (2017)
Journal Article
Matsuura, M., Indebetouw, R., Woosley, S., Bujarrabal, V., Abellán, F. J., McCray, R., …Yates, J. (2017). ALMA observations of Molecules in Supernova 1987A. Proceedings of the International Astronomical Union, 12(S331), 294-299. https://doi.org/10.1017/s1743921317004719

Supernova (SN) 1987A has provided a unique opportunity to study how SN ejecta evolve in 30 years time scale. We report our ALMA spectral observations of SN 1987A, taken in 2014, 2015 and 2016, with detections of CO, 28SiO, HCO+ and SO, with weaker li... Read More about ALMA observations of Molecules in Supernova 1987A.

Progenitors of Core-Collapse Supernovae (2017)
Journal Article
Hirschi, R., Arnett, D., Cristini, A., Georgy, C., Meakin, C., & Walkington, I. (2017). Progenitors of Core-Collapse Supernovae. Proceedings of the International Astronomical Union, 12(S331), 1-10. https://doi.org/10.1017/S1743921317004896

Massive stars have a strong impact on their surroundings, in particular when they produce a core-collapse supernova at the end of their evolution. In these proceedings, we review the general evolution of massive stars and their properties at collapse... Read More about Progenitors of Core-Collapse Supernovae.

The Surface Brightness-color Relations Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions (2017)
Journal Article
Maxted. (2017). The Surface Brightness-color Relations Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions. Astrophysical Journal, https://doi.org/10.3847/1538-4357/aa5d56

In this study we investigate the calibration of surface brightness–color (SBC) relations based solely on eclipsing binary stars. We selected a sample of 35 detached eclipsing binaries with trigonometric parallaxes from Gaia DR1 or Hipparcos whose abs... Read More about The Surface Brightness-color Relations Based on Eclipsing Binary Stars: Toward Precision Better than 1% in Angular Diameter Predictions.

Impact of Rotation and Convective Boundary Mixing in Low Mass AGB Stars (2017)
Journal Article
den Hartogh, J., Battino, U., Hirschi, R., Pignatari, M., & Herwig, F. (2017). Impact of Rotation and Convective Boundary Mixing in Low Mass AGB Stars. JPS Conference Proceedings, https://doi.org/10.7566/jpscp.14.020904

After central He burning exhaustion, stars with an initial mass of 1.5–3 solar masses start the AGB phase. In this phase, the s-process takes place, which is producing about half of all elements heavier than iron. We calculated non-rotating AGB stell... Read More about Impact of Rotation and Convective Boundary Mixing in Low Mass AGB Stars.

Impacts of Nuclear-Physics Uncertainty in Stellar Temperatures on the s-Process Nucleosynthesis (2017)
Journal Article
Nishimura, N., Cescutti, G., Hirschi, R., Rauscher, T., Den Hartogh, J., & Murphy, A. S. J. (2017). Impacts of Nuclear-Physics Uncertainty in Stellar Temperatures on the s-Process Nucleosynthesis. JPS Conference Proceedings, https://doi.org/10.7566/jpscp.14.020903

We evaluated the uncertainty relevant to s-process nucleosynthesis using a Monte-Carlo centred approach. We are based on a realistic and general prescription of temperature dependent uncertainty for the reactions. We considered massive stars for the... Read More about Impacts of Nuclear-Physics Uncertainty in Stellar Temperatures on the s-Process Nucleosynthesis.

Constraining the efficiency of angular momentum transport with asteroseismology of red giants: the effect of stellar mass (2017)
Journal Article
Eggenberger, P., Lagarde, N., Miglio, A., Montalbán, J., Ekström, S., Georgy, C., …Hirschi, R. (2017). Constraining the efficiency of angular momentum transport with asteroseismology of red giants: the effect of stellar mass. Astronomy & Astrophysics, 599, Article A18. https://doi.org/10.1051/0004-6361/201629459

Context. Constraints on the internal rotation of red giants are now available thanks to asteroseismic observations. Preliminary comparisons with rotating stellar models indicate that an undetermined additional process for the internal transport of an... Read More about Constraining the efficiency of angular momentum transport with asteroseismology of red giants: the effect of stellar mass.

From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b (2017)
Journal Article
Lam, K., Faedi, F., Brown, D., Anderson, D., Delrez, L., Gillon, M., …Wheatley, P. (2017). From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b. Astronomy and Astrophysics, 599, Article A3. https://doi.org/10.1051/0004-6361/201629403

We report three newly discovered exoplanets from the SuperWASP survey. WASP-127b is a heavily inflated super-Neptune of mass 0.18±0.02 MJ and radius 1.37±0.04 RJ. This is one of the least massive planets discovered by the WASP project. It orbits a br... Read More about From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b.

The Intermediate r-process in Core-collapse Supernovae Driven by the Magneto-rotational Instability (2017)
Journal Article
(2017). The Intermediate r-process in Core-collapse Supernovae Driven by the Magneto-rotational Instability. Astrophysical Journal Letters, https://doi.org/10.3847/2041-8213/aa5dee

We investigated r-process nucleosynthesis in magneto-rotational supernovae, based on a new explosion mechanism induced by the magneto-rotational instability (MRI). A series of axisymmetric magneto-hydrodynamical simulations with detailed microphysics... Read More about The Intermediate r-process in Core-collapse Supernovae Driven by the Magneto-rotational Instability.

Computer modelling of double doped SrAl2O4 for phosphor applications (2017)
Journal Article
Jackson, R. A., Kavanagh, L. A., & Snelgrove, R. A. (2017). Computer modelling of double doped SrAl2O4 for phosphor applications. IOP Conference Series: Materials Science and Engineering, 169, Article 012004. https://doi.org/10.1088/1757-899x/169/1/012004

This paper describes a modelling study of SrAl2O4, which has applications as a phosphor material when doped with Eu2+ and Dy3+ ions. The procedure for modelling the pure and doped material is described and then results are presented for the single an... Read More about Computer modelling of double doped SrAl2O4 for phosphor applications.

Binding blocks: building the Universe one nucleus at a time (2017)
Journal Article
Diget, C. A., Pastore, A., Leech, K., Haylett, T., Lock, S., Sanders, T., …Collaboration, T. B. B. (2017). Binding blocks: building the Universe one nucleus at a time. Physics Education, 52(2), 024001. https://doi.org/10.1088/1361-6552/aa550c

We present a new teaching and outreach activity based around the construction of a three-dimensional chart of isotopes using $\text{LEG}{{\text{O}}^{\circledR}}$ bricks5. The activity, binding blocks, demonstrates nuclear and astrophysical processes... Read More about Binding blocks: building the Universe one nucleus at a time.

Benzene-1,3,5-tricarboxamide n-alkyl ester and carboxylic acid derivatives: tuneable structural, morphological and thermal properties (2017)
Journal Article
Lynes, A. D., Hawes, C. S., Ward, E. N., Haffner, B., Möbius, M. E., Byrne, K., …Gunnlaugsson, T. (in press). Benzene-1,3,5-tricarboxamide n-alkyl ester and carboxylic acid derivatives: tuneable structural, morphological and thermal properties. CrystEngComm, 19(10), 1427-1438. https://doi.org/10.1039/c7ce00206h

A family of five benzene-1,3,5-tricarboxamide (BTA) compounds with varied side arm functionality [alkyl: n = 3, 4 and 5 chains; and ester and carboyxic acids] is reported. Investigations into their self-assembly behaviour revealed the extent to which... Read More about Benzene-1,3,5-tricarboxamide n-alkyl ester and carboxylic acid derivatives: tuneable structural, morphological and thermal properties.

Alarm Pheromone Composition and Behavioral Activity in Fungus-Growing Ants. (2017)
Journal Article
Drijfhout. (2017). Alarm Pheromone Composition and Behavioral Activity in Fungus-Growing Ants. Journal of Chemical Ecology, 225 - 235. https://doi.org/10.1007/s10886-017-0821-4

Chemical communication is a dominant method of communication throughout the animal kingdom and can be especially important in group-living animals in which communicating threats, either from predation or other dangers, can have large impacts on group... Read More about Alarm Pheromone Composition and Behavioral Activity in Fungus-Growing Ants..

Temporal resolution of a pre-maximum halt in a classical nova: V5589 Sgr observed with STEREO HI-1B (2017)
Journal Article
(2017). Temporal resolution of a pre-maximum halt in a classical nova: V5589 Sgr observed with STEREO HI-1B. Monthly Notices of the Royal Astronomical Society, 2684 - 2689. https://doi.org/10.1093/mnras/stx298

Classical novae show a rapid rise in optical brightness over a few hours. Until recently the rise phase, particularly the phenomenon of a pre-maximum halt, was observed sporadically. Solar observation satellites observing coronal mass ejections enabl... Read More about Temporal resolution of a pre-maximum halt in a classical nova: V5589 Sgr observed with STEREO HI-1B.

Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars (2017)
Journal Article
Pápics, P., Tkachenko, A., Van Reeth, T., Aerts, C., Moravveji, E., Van de Sande, M., …Gameiro, J. (2017). Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars. Astronomy & Astrophysics, 598, Article A74. https://doi.org/10.1051/0004-6361/201629814

Context. Massive stars are important building blocks of the Universe, and their stellar structure and evolution models are fundamental cornerstones of various fields in modern astrophysics. The precision of these models is strongly limited by our lac... Read More about Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars.

Coordination chemistry of N-picolyl-1,8-naphthalimides: colourful low molecular weight metallo-gelators and unique chelation behaviours (2017)
Journal Article
Hawes, C. S. (2017). Coordination chemistry of N-picolyl-1,8-naphthalimides: colourful low molecular weight metallo-gelators and unique chelation behaviours. Inorganic Chemistry Frontiers, 296 -308. https://doi.org/10.1039/c6qi00498a

We have prepared a series of N-picolyl-1,8-naphthalimide derivatives and explored their coordination chemistry with d-block metal ions in the solid and solution states, and exploited the structural and chemical properties of these ligands to generat... Read More about Coordination chemistry of N-picolyl-1,8-naphthalimides: colourful low molecular weight metallo-gelators and unique chelation behaviours.

A Transient Transit Signature Associated with the Young Star RIK-210 (2017)
Journal Article
David, T. J., Petigura, E. A., Hillenbrand, L. A., Cody, A. M., Cameron, A. C., Stauffer, J. R., …Anderson, D. R. A Transient Transit Signature Associated with the Young Star RIK-210. Astrophysical Journal, 835(2), 168. https://doi.org/10.3847/1538-4357/835/2/168

We find transient transit-like dimming events within the K2 time series photometry of the young star RIK-210 in the Upper Scorpius OB association. These dimming events are variable in depth, duration, and morphology. High spatial resolution imaging r... Read More about A Transient Transit Signature Associated with the Young Star RIK-210.