Journal: Proceedings of the International Astronomical Union

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Publisher

Cambridge University Press

Journal Volumes

ISSN

1743-9213
1743-9221

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2008 - 200932010 - 20177
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Publications 1 - 10 of 10
  • The Intriguing Life of Massive Galaxies
    Item type: Journal Article
    Peng, Ying-jie; Lilly, Simon; Renzini, Alvio; et al. (2013)
    Proceedings of the International Astronomical Union
  • Hα kinematics of nearby galaxies using Fabry-Perot and IFU data
    Item type: Conference Paper
    Erroz-Ferrer, Santiago (2017)
    Proceedings of the International Astronomical Union ~ Formation and evolution of galaxy outskirts: Proceedings of the 321st Symposium of the International Astronomical Union held in Toledo, Spain, March 14-18, 2016
  • Molecules in nearby and primordial supernovae
    Item type: Conference Paper
    Cherchneff, Isabelle; Lilly, Simon (2008)
    Proceedings of the International Astronomical Union ~ Organic matter in space : proceedings of the 251st Symposium of the International Astronomical Union held in Hong Kong, China, February 18-22, 2008
  • 3D SPH simulations of grain growth in protoplanetary disks
    Item type: Conference Paper
    Laibe, Guillaume; Gonzalez, Jean-François; Fouchet, Laure; et al. (2008)
    Proceedings of the International Astronomical Union ~ Exoplanets: Detection, Formation & Dynamics
  • Understanding biases when fitting disk truncations
    Item type: Other Conference Item
    Cardiel, Nicolás; Marino, Raffaella A.; Pascual, Sergio; et al. (2016)
    Proceedings of the International Astronomical Union
  • A phenomenological approach to the evolution of galaxies
    Item type: Journal Article
    Lilly, Simon; Peng, Yingjie; Carollo, C. Marcella; et al. (2013)
    Proceedings of the International Astronomical Union
  • Dust evolution in protoplanetary disks
    Item type: Conference Paper
    Gonzalez, Jean-François; Fouchet, Laure; Maddison, Sarah T.; et al. (2008)
    Proceedings of the International Astronomical Union ~ Exoplanets: Detection, Formation & Dynamics
  • The build-up of the outskirts of distant star-forming galaxies at z ~ 2
    Item type: Conference Paper
    Tacchella, Sandro; Carollo, C. Marcella; Dekel, Avishai; et al. (2017)
    Proceedings of the International Astronomical Union ~ Formation and evolution of galaxy outskirts: Proceedings of the 321st Symposium of the International Astronomical Union held in Toledo, Spain, March 14-18, 2016
  • Determining the Local Dark Matter Density with SDSS G-dwarf data
    Item type: Conference Paper
    Silverwood, Hamish; Sivertsson, Sofia; Read, Justin; et al. (2017)
    Proceedings of the International Astronomical Union ~ Astrometry and Astrophysics in the Gaia sky
    We present a determination of the local dark matter density derived using the integrated Jeans equation method presented in Silverwood et al. (2016) applied to SDSS-SEGUE G-dwarf data processed by Büdenbender et al. (2015). For our analysis we construct models for the tracer density, dark matter and baryon distribution, and tilt term (linking radial and vertical motions), and then calculate the vertical velocity dispersion using the integrated Jeans equation. These models are then fit to the data using MULTINEST, and a posterior distribution for the local dark matter density is derived. We find the most reliable determination to come from the α-young population presented in Büdenbender et al. (2015), yielding a result of ρDM = 0.46+0.07−0.09 GeV cm−3 = 0.012+0.001−0.002 M⊙ pc−3. Our results also illuminate the path ahead for future analyses using Gaia DR2 data, highlighting which quantities will need to be determined and which assumptions could be relaxed.
  • Neutral hydrogen in the post-reionization universe
    Item type: Conference Paper
    Padmanabhan, Hamsa (2017)
    Proceedings of the International Astronomical Union ~ Peering towards cosmic dawn
    The evolution of neutral hydrogen (HI) across redshifts is a powerful probe of cosmology, large scale structure in the universe and the intergalactic medium. Using a data-driven halo model to describe the distribution of HI in the post-reionization universe (z ∼ 5 to 0), we obtain the best-fitting parameters from a rich sample of observational data: low redshift 21-cm emission line studies, intermediate redshift intensity mapping experiments, and higher redshift Damped Lyman Alpha (DLA) observations. Our model describes the abundance and clustering of neutral hydrogen across redshifts 0 - 5, and is useful for investigating different aspects of galaxy evolution and for comparison with hydrodynamical simulations. The framework can be applied for forecasting future observations with neutral hydrogen, and extended to the case of intensity mapping with molecular and other line transitions at intermediate redshifts.
Publications 1 - 10 of 10