University of Hull logo

Galactic chemical evolution of radioactive isotopes (2019)
Journal Article
Côté, B., Lugaro, M., Reifarth, R., Pignatari, M., Világos, B., Yagüe, A., & Gibson, B. K. (2019). Galactic chemical evolution of radioactive isotopes. The Astrophysical journal, 878(2), https://doi.org/10.3847/1538-4357/ab21d1

The presence of short-lived (∼ Myr) radioactive isotopes in meteoritic inclusions at the time of their formation represents a unique opportunity to study the circumstances that led to the formation of the Solar System. To interpret these observations... Read More

The R-Process alliance: Discovery of a Low-α, r-process-enhanced Metal-poor Star in the Galactic Halo (2019)
Journal Article
Sakari, C. M., Roederer, I. U., Placco, V. M., Beers, T. C., Ezzeddine, R., Frebel, A., …Watson, F. (2019). The R-Process alliance: Discovery of a Low-α, r-process-enhanced Metal-poor Star in the Galactic Halo. The Astrophysical journal, 874(2), 148. https://doi.org/10.3847/1538-4357/ab0c02

A new moderately r-process-enhanced metal-poor star, RAVE J093730.5−062655, has been identified in the Milky Way halo as part of an ongoing survey by the R-Process Alliance. The temperature and surface gravity indicate that J0937−0626 is likely a hor... Read More

Catching element formation in the act (2019)
Other
Fryer, C. L., Timmes, F., Hungerford, A. L., Couture, A., Adams, F., Aoki, W., …Pignatari, M. (2019). Catching element formation in the act

Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects and phenomena: stars, supernovae, novae, neutron stars, stellar-mass b... Read More

Local disc model in view of Gaia DR1 and RAVE data (2018)
Journal Article
Sysoliatina, K., Just, A., Koutsouridou, I., Grebel, E. K., Kordopatis, G., Steinmetz, M., …Seabroke, G. (2018). Local disc model in view of Gaia DR1 and RAVE data. Astronomy and astrophysics, 620, A71. https://doi.org/10.1051/0004-6361/201833228

Aims. We test the performance of the semi-analytic self-consistent Just-Jahreiß disc model (JJ model) with the astrometric data from the Tycho-Gaia Astrometric Solution (TGAS) sub-catalogue of the first Gaia data release (Gaia DR1), as well as the ra... Read More

The r-process alliance: First release from the Northern search for r-process enhanced metal-poor stars in the Galactic Halo (2018)
Journal Article
Sakari, C. M., Placco, V. M., Farrell, E. M., Roederer, I. U., Wallerstein, G., Beers, T. C., …Watson, F. (2018). The r-process alliance: First release from the Northern search for r-process enhanced metal-poor stars in the Galactic Halo. The Astrophysical journal, 868(2), 110. https://doi.org/10.3847/1538-4357/aae9df

This paper presents the detailed abundances and r-process classifications of 126 newly identified metal-poor stars as part of an ongoing collaboration, the R-Process Alliance.

The time evolution of the Milky Way’s oxygen abundance gradient (2018)
Journal Article
Mollá, M., Díaz, Á. I., Cavichia, O., Gibson, B. K., Maciel, W. J., Costa, R. D. D., …Few, C. G. (2019). The time evolution of the Milky Way’s oxygen abundance gradient. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 482(3), 3071–3088. doi:10.1093/mnras/sty2877

We study the evolution of oxygen abundance radial gradients as a function of time for the Milky Way Galaxy obtained with our Mulchem chemical evolution model. We review the recent data of abundances for different objects observed in our Galactic disc... Read More

The local rotation curve of the Milky Way based on SEGUE and RAVE data (2018)
Journal Article
Sysoliatina, K., Just, A., Golubov, O., Parker, Q. A., Grebel, E. K., Kordopatis, G., …Watson, F. (2018). The local rotation curve of the Milky Way based on SEGUE and RAVE data. Astronomy and Astrophysics, 614, (A63). doi:10.1051/0004-6361/201731143. ISSN 0004-6361

Aims. We construct the rotation curve of the Milky Way in the extended solar neighbourhood using a sample of Sloan Extension for Galactic Understanding and Exploration (SEGUE) G-dwarfs. We investigate the rotation curve shape for the presence of any... Read More

Evolution of starburst galaxies in the Illustris simulation (2018)
Journal Article
Wilkinson, C. L., Pimbblet, K. A., Stott, J. P., Few, C. G., & Gibson, B. K. (2018). Evolution of starburst galaxies in the Illustris simulation. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 479(1), 758-767. https://doi.org/10.1093/mnras/sty1493

© 2018 The Author(s). Published by Oxford University Press on behalf of The Royal Astronomical Society. There is a consensus in the literature that starburst galaxies are triggered by interaction events. However, it remains an open question as to wha... Read More

The origin of the Milky Way's halo age distribution (2018)
Journal Article
Carollo, D., Tissera, P. B., Beers, T. C., Gudin, D., Gibson, B. K., Freeman, K. C., & Monachesi, A. (2018). The origin of the Milky Way's halo age distribution. Astrophysical journal. Letters, 859(1), L7. https://doi.org/10.3847/2041-8213/aac2dc

© 2018. The American Astronomical Society.. We present an analysis of the radial age gradients for the stellar halos of five Milky Way (MW) mass-sized systems simulated as part of the Aquarius Project. The halos show a diversity of age trends, reflec... Read More

Correlations between age, kinematics, and chemistry as seen by the RAVE survey (2018)
Journal Article
Wojno, J., Kordopatis, G., Steinmetz, M., McMillan, P., Binney, J., Famaey, B., …Seabroke, G. (2018). Correlations between age, kinematics, and chemistry as seen by the RAVE survey. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 477(4), 5612-5624. https://doi.org/10.1093/mnras/sty1016

We explore the connections between stellar age, chemistry, and kinematics across a Galactocentric distance of 7.5 < R(kpc) < 9.0, using a sample of ∼12 000 intermediate-mass (FGK) turn-off stars observed with the RAdial Velocity Experiment (RAVE) sur... Read More

Improved distances and ages for stars common to TGAS and RAVE (2018)
Journal Article
McMillan, P. J., Kordopatis, G., Kunder, A., Binney, J., Wojno, J., Zwitter, T., …Wyse, R. F. (2018). Improved distances and ages for stars common to TGAS and RAVE. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 477(4), 5279-5300. https://doi.org/10.1093/MNRAS/STY990

We combine parallaxes from the first Gaia data release with the spectrophotometric distance estimation framework for stars in the fifth RAVE survey data release. The combined distance estimates are more accurate than either determination in isolation... Read More

An overview of the MHONGOOSE survey: observing nearby galaxies with MeerKAT (2018)
Journal Article
De Blok, W. J. G., Adams, E. A. K., Amram, P., Athanassoula, E., Bagetakos, I., Balkowski, C., …Zijlstra, A. (2018). An overview of the MHONGOOSE survey: observing nearby galaxies with MeerKAT. Proceedings of Science, 277, https://doi.org/10.22323/1.277.0007

MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with HI masses from 10^6 to ~10^{11} M_sun, and luminosities from M_R ~ -12 to M_R ~ -22. The sample is selected to unifor... Read More

Is the Milky Way still breathing? RAVE–Gaia streaming motions (2018)
Journal Article
Carrillo, I., Minchev, I., Kordopatis, G., Steinmetz, M., Binney, J., Anders, F., …Zwitter, T. (2018). Is the Milky Way still breathing? RAVE–Gaia streaming motions. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 475(2), 2679-2696. https://doi.org/10.1093/mnras/stx3342

We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution (TGAS) catalogue to compute the velocity fields yielded by the radial (VR), azimuthal (Vϕ),and vertical (Vz) components of associated Galactocentric veloci... Read More

The Foundation Supernova Survey: Motivation, design, implementation, and first data release (2017)
Journal Article
Foley, R. J., Scolnic, D., Rest, A., Jha, S. W., Pan, Y., Riess, A. G., …Willman, M. (2018). The Foundation Supernova Survey: Motivation, design, implementation, and first data release. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 475(1), 193-219. https://doi.org/10.1093/mnras/stx3136

© 2017 The Author(s). The Foundation Supernova Survey aims to provide a large, high-fidelity, homogeneous, and precisely calibrated low-redshift Type Ia supernova (SN Ia) sample for cosmology. The calibration of the current low-redshift SN sample is... Read More

The role of stellar radial motions in shaping galaxy surface brightness profiles (2017)
Journal Article
Ruiz-Lara, T., Few, C. G., Florido, E., Gibson, B. K., Pérez, I., & Sánchez-Blázquez, P. (2017). The role of stellar radial motions in shaping galaxy surface brightness profiles. Astronomy and Astrophysics, 608, A126. https://doi.org/10.1051/0004-6361/201731485

Aims. The physics driving features such as breaks observed in galaxy surface brightness (SB) profiles remains contentious. Here, we assess the importance of stellar radial motions in shaping their characteristics. Methods. We use the simulated Milky... Read More

Metallicity gradient of the thick disc progenitor at high redshift (2017)
Journal Article
Kawata, D., Prieto, C. A., Brook, C. B., Casagrande, L., Ciucă, I., Gibson, B. K., …Hunt, J. A. S. (2018). Metallicity gradient of the thick disc progenitor at high redshift. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 473(1), 867-878. https://doi.org/10.1093/mnras/stx2464

© 2017 The Authors. We have developed a novel Markov Chain Monte Carlo chemical 'painting' technique to explore possible radial and vertical metallicity gradients for the thick disc progenitor. In our analysis, we match an N-body simulation to the da... Read More

The Gaia-ESO Survey: matching chemodynamical simulations to observations of the Milky Way (2017)
Journal Article
Thompson, B. B., Few, C. G., Bergemann, M., Gibson, B. K., MacFarlane, B. A., Serenelli, A., …Zaggia, S. (2018). The Gaia-ESO Survey: matching chemodynamical simulations to observations of the Milky Way. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 473(1), 185-197. https://doi.org/10.1093/MNRAS/STX2316

The typical methodology for comparing simulated galaxies with observational surveys is usually to apply a spatial selection to the simulation to mimic the region of interest covered by a comparable observational survey sample. In this work, we compar... Read More

Galactic chemical evolution (2017)
Book Chapter
Mollá, M., Cavichia, O., Costa, R. D. D. D., Gibson, B. K., & Díaz, Á. I. (in press). Galactic chemical evolution. In Highlights of Spanish astrophysics IXSociedad Española de Astronomía

We analyze the evolution of oxygen abundance radial gradients resulting from our chemical evolution models calculated with different prescriptions for the star formation rate (SFR) and for the gas infall rate, in order to assess their respective role... Read More

Climbing the cosmic ladder with stellar twins in RAVE with Gaia (2017)
Journal Article
Jofré, P., Traven, G., Hawkins, K., Gilmore, G., Sanders, J. L., Mädler, T., …Zwitter, T. (2017). Climbing the cosmic ladder with stellar twins in RAVE with Gaia. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 472(3), 2517-2533. doi:10.1093/mnras/stx1877

© 2017 The Author. We apply the twin method to determine parallaxes to 232 545 stars of the RAVE survey using the parallaxes of Gaia DR1 as a reference. To search for twins in this large data set, we apply the t-student stochastic neighbour embedding... Read More