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The impact of the FMR and starburst galaxies on the (low-metallicity) cosmic star formation history
Martyna Chruslinska, Gijs Nelemans, Lumen Boco +1
The question how much star formation is occurring at low metallicity throughout the cosmic history appears crucial for the discussion of the origin of various energetic transients,…
The Galactic neutron star population I - an extragalactic view of the Milky Way and the implications for fast radio bursts
A. A. Chrimes, A. J. Levan, P. J. Groot +2
A key tool astronomers have to investigate the nature of extragalactic transients is their position on their host galaxies. Galactocentric offsets, enclosed fluxes and the fraction…
The effect of the environment-dependent IMF on the formation and metallicities of stars over the cosmic history
Martyna Chruslinska, Tereza Jerabkova, Gijs Nelemans +1
Recent observational and theoretical studies indicate that the stellar initial mass function (IMF) varies systematically with the environment (star formation rate - SFR, metallicit…
Metallicity of stars formed throughout the cosmic history based on the observational properties of star forming galaxies
Martyna Chruslinska, Gijs Nelemans
Metallicity is one of the crucial factors that determine stellar evolution. To characterize the properties of stellar populations one needs to know the fraction of stars forming at…
White dwarfs in the building blocks of the Galactic spheroid
Pim van Oirschot, Gijs Nelemans, Else Starkenburg +3
The galactic halo likely grew over time in part by assembling smaller galaxies, the so-called building blocks. We investigate if the properties of these building blocks are reflect…
Semi-analytic modelling of the europium production by neutron star mergers in the halo of the Milky Way
Pim van Oirschot, Gijs Nelemans, Onno Pols +1
Neutron star mergers (NSM) are likely to be the main production sites for the rapid (r-) neutron capture process elements. We study the r-process enrichment of the stellar halo of…
Gaia Data Release 2. Summary of the contents and survey properties
Gaia Collaboration, A. G. A. Brown, A. Vallenari +4
We present the second Gaia data release, Gaia DR2, consisting of astrometry, photometry, radial velocities, and information on astrophysical parameters and variability, for sources…
Building Blocks of the Milky Way's Accreted Spheroid
Pim van Oirschot, Else Starkenburg, Amina Helmi +1
In the CDM model of structure formation, a stellar spheroid grows by the assembly of smaller galaxies, the so-called building blocks. Combining the Munich-Groningen semi-analyti…
Binary white dwarfs in the halo of the Milky Way
Pim van Oirschot, Gijs Nelemans, Silvia Toonen +4
Aims: We study single and binary white dwarfs in the inner halo of the Milky Way in order to learn more about the conditions under which the population of halo stars was born, such…
Near-infrared counterparts to the Galactic Bulge Survey X-ray source population
S. Greiss, D. Steeghs, P. G. Jonker +6
We report on the near-infrared matches, drawn from three surveys, to the 1640 unique X-ray sources detected by Chandra in the Galactic Bulge Survey (GBS). This survey targets faint…
Radio sources in the Chandra Galactic Bulge survey
Thomas J. Maccarone, Manuel A. P. Torres, Christopher T. Britt +6
We discuss radio sources in the Chandra Galactic Bulge survey region. By cross-matching the X-ray sources in this field with the NVSS archival data, we find 12 candidate matches. W…
Gravitational-wave emission from compact Galactic binaries
Samaya Nissanke, Michele Vallisneri, Gijs Nelemans +1
Compact Galactic binaries where at least one member is a white dwarf or neutron star constitute the majority of individually detectable sources for future low-frequency space-based…
The X-ray quiescence of Swift J195509.6+261406 (GRB 070610): an optical bursting X-ray binary?
N. Rea, P. G. Jonker, G. Nelemans +4
We report on a 63ks Chandra observation of the X-ray transient Swift J195509.6+261406 discovered as the afterglow of what was first believed to be a long duration Gamma-Ray Burst (…
Stellar variability on time-scales of minutes: results from the first 5 years of the Rapid Temporal Survey (RATS)
Thomas Barclay, Gavin Ramsay, Pasi Hakala +4
The Rapid Temporal Survey (RATS) explores the faint, variable sky. Our observations search a parameter space which, until now, has never been exploited from the ground. Our strateg…
The UV-Excess Survey of the Northern Galactic Plane (UVEX)
Paul J. Groot, K. Verbeek, R. Greimel +41
The UV-Excess Survey of the Northern Galactic Plane images a 10x185 degree wide band, centered on the Galactic Equator using the 2.5m Isaac Newton Telescope in four bands (U,g,r,He…