Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Stancliffe, Richard"'
Autor:
Pignatari, Marco, Trueman, Thomas C. L., Womack, Kate A., Gibson, Brad K., Côté, Benoit, Turrini, Diego, Sneden, Christopher, Mojzsis, Stephen J., Stancliffe, Richard J., Fong, Paul, Lawson, Thomas V., Keegans, James D., Pilkington, Kate, Passy, Jean-Claude, Beers, Timothy C., Lugaro, Maria
Theoretical physical-chemical models for the formation of planetary systems depend on data quality for the Sun's composition, that of stars in the solar neighbourhood, and of the estimated "pristine" compositions for stellar systems. The effective sc
Externí odkaz:
http://arxiv.org/abs/2307.12330
Autor:
Keegans, James D, Pignatari, Marco, Stancliffe, Richard J, Travaglio, Claudia, Jones, Samuel, Gibson, Brad K, Townsley, Dean M, Miles, Broxton J, Shen, Ken J, Few, Gareth
Type Ia supernova explosions (SNIa) are fundamental sources of elements for the chemical evolution of galaxies. They efficiently produce intermediate-mass (with Z between 11 and 20) and iron group elements - for example, about 70% of the solar iron i
Externí odkaz:
http://arxiv.org/abs/2306.12885
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 517(2), pp 1803 1820 (2022)
Certain types of silicon carbide (SiC) grains, e.g., SiC-X grains, and low density (LD) graphites are C-rich presolar grains that are thought to have condensed in the ejecta of core-collapse supernovae (CCSNe). In this work we compare C, N, Al, Si, a
Externí odkaz:
http://arxiv.org/abs/2212.06846
Autor:
Lawson, Thomas V., Pignatari, Marco, Stancliffe, Richard J., Hartogh, Jacqueline den, Jones, Sam, Fryer, Chris L., Gibson, Brad K., Lugaro, Maria
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 511, Issue 1, March 2022, Pages 886 902
Short-lived radioactive isotopes (SLRs) with half-lives between 0.1 to 100 Myr can be used to probe the origin of the Solar System. In this work, we examine the core-collapse supernovae production of the 15 SLRs produced: $^{26}$Al, $^{36}$Cl, $^{41}
Externí odkaz:
http://arxiv.org/abs/2203.10676
Autor:
Stancliffe, Richard J.
We examine the composition of barium stars in the context of mass transfer from an asymptotic giant branch (AGB) companion. We accrete between 0.01 and 0.5 M$_\odot$ of AGB ejecta on to low mass companions of [Fe/H] = -0.25 at the ages expected for t
Externí odkaz:
http://arxiv.org/abs/2106.08225
Autor:
Keegans, James D., Stancliffe, Richard J., Bilton, Lawrence E., Cashmore, Claire R., Gibson, Brad K., Kristensen, Mikkel T., Lawson, Thomas V., Pignatari, Marco, Vaezzadeh, Iraj, Côté, Benoit, Chongchitnan, Siri
$\textit{Thailand-UK Python+Astronomy Summer School}$ (ThaiPASS), a collaborative project comprising UK and Thai institutions and assess its impact and possible application to schools in the United Kingdom. Since its inception in 2018, the annual Tha
Externí odkaz:
http://arxiv.org/abs/2101.04643
Autor:
Liu, Zheng-Wei, Stancliffe, Richard J.
Publikováno v:
A&A 641, A20 (2020)
The nature of the progenitors of type Ia supernovae (SNe Ia) remains a mystery. Binary systems consisting of a white dwarf (WD) and a main-sequence (MS) donor are potential progenitors of SNe Ia, in which a thermonuclear explosion of the WD may occur
Externí odkaz:
http://arxiv.org/abs/2011.07668
Autor:
Hampel, Melanie, Karakas, Amanda I., Stancliffe, Richard J., Meyer, Bradley S., Lugaro, Maria
Lead (Pb) is predominantly produced by the slow neutron-capture process (s process) in asymptotic giant branch (AGB) stars. In contrast to significantly enhanced Pb abundances predicted by low-mass, low-metallicity AGB-models, observations of Magella
Externí odkaz:
http://arxiv.org/abs/1910.11882
Publikováno v:
A&A 620, A63 (2018)
The chemical enrichments detected in CEMP-$s$ stars are believed to be the consequence of a mass-transfer episode from a now extinct AGB primary star. This hypothesis is borne out by the fact that most CEMP-$s$ stars exhibit RV variations suggesting
Externí odkaz:
http://arxiv.org/abs/1809.10157
Autor:
Liu, Zheng-Wei, Stancliffe, Richard J.
The nature of the progenitors of Type Ia supernovae (SNe Ia) remains a mystery. Comparing theoretical rates and delay-time distributions of SNe Ia with those inferred observationally can constrain their progenitor models. In this work, taking thermoh
Externí odkaz:
http://arxiv.org/abs/1801.05810