02 Nov 2017

  • (abs, pdf) Boylan-Kolchin, The Little Engines That Could? Globular Clusters Contribute Significantly to Reionization-era Star Formation
  • (abs, pdf) Shivaei et al., The MOSDEF Survey: Direct Observational Constraints on the Ionizing Photon Production Efficiency, $\xi_{\rm ion}$, at z~2
  • (abs, pdf) Clauwens et al., The three phases of galaxy formation
  • (abs, pdf) Huppenkothen et al., Hack Weeks as a model for Data Science Education and Collaboration

01 Nov 2017

  • (abs, pdf) Oesch et al., The Dearth of z~10 Galaxies in all HST Legacy Fields — The Rapid Evolution of the Galaxy Population in the First 500 Myr
  • (abs, pdf) Graus et al., Through a Smoother Lens: An expected absence of LCDM substructure detections from hydrodynamic and dark matter only simulations
  • (abs, pdf) McGaugh et al., The Star Forming Main Sequence of Dwarf Low Surface Brightness Galaxies
  • (abs, pdf) Arata et al., Gas clump formation via thermal instability in high-redshift dwarf galaxy mergers
  • (abs, pdf) Ricarte & Natarajan, Exploring SMBH Assembly with Semi-analytic Modelling

30 Oct 2017

  • (abs, pdf) Gandhi et al., An elevation of 0.1 light-seconds for the optical jet base in an accreting Galactic black hole system
  • (abs, pdf) Sarmento et al., Following the Cosmic Evolution of Pristine Gas II: The search for Pop III-Bright Galaxies
  • (abs, pdf) Kakiichi & Dijkstra, A new model framework for circumgalactic Ly$\alpha$ radiative transfer constrained by galaxy-Ly$\alpha$ forest clustering

27 Oct 2017

  • (abs, pdf) Pacucci et al., Conditions for Optimal Growth of Black Hole Seeds
  • (abs, pdf) McGreer et al., The Faint End of the z=5 Quasar Luminosity Function from the CFHTLS
  • (abs, pdf) Ghara et al., Prediction of the 21-cm signal from reionization: comparison between 3D and 1D radiative transfer schemes
  • (abs, pdf) Yang et al., Linking black-hole growth with host galaxies: The accretion-stellar mass relation and its cosmic evolution
  • (abs, pdf) Murray et al., The Effects of Protostellar Jet Feedback on Turbulent Collapse

25 Oct 2017

  • (abs, pdf) Barnes et al., A census of cool core galaxy clusters in IllustrisTNG
  • (abs, pdf) Sobral et al., On the nature of the luminous Lya emitter CR7 and its UV components: physical conditions and JWST predictions
  • (abs, pdf) Paxton et al., Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
  • (abs, pdf) Ryu et al., Population III X-Ray Binaries

23 Oct 2017

  • (abs, pdf) Sanderbeck et al., The Sources of Extreme Ultraviolet and Soft X-ray Backgrounds
  • (abs, pdf) Kawamata et al., Size–luminosity relations and UV luminosity functions at $z=6-9$ simultaneously derived from the complete Hubble Frontier Fields data
  • (abs, pdf) Anathpindika et al., On the star-forming ability of Molecular Clouds
  • (abs, pdf) Penny et al., SDSS-IV MaNGA: Evidence of the importance of AGN feedback in low-mass galaxies

New Paper: Connecting Simulations with Galaxy Models

This week submitted a paper (arXiv) that compares, validates, and calibrates semi-analytic models of high-redshift galaxy formation to our previous simulations of the first stars and galaxies.  This paper was led by Benoit Côté, a postdoc at the Research Centre for Astronomy and Earth Sciences in Budapest. Semi-analytic models of galaxy formation are a great, computation-lite method to explore which physical processes are important during galaxy formation. Here we compared the most massive galaxy in the “Birth of Galaxy” simulations to GAMMA. We determined the best model that accurately tracks the amount of gas transferred from the star-forming regions to the circumgalactic medium (CGM). This gas lifecycle is a key component to understand how galaxies form, and we found it to be much more rapid during the initial assembly of galaxies. In particular, supernova eject creates a inhomogeneous distribution of metals that is well captured by imposing a spread of 0.2 dex in metallicities in the semi-analytic models. This adjustment results in a good match in the metallicity distribution function of stars in dwarf galaxies, which is a key indicator of the assembly history of the smallest building blocks of the galaxies we see around us.