Astronomy / Astrophysics / Space Science

In this discipline: 172 papers · 886 groups

Discipline summary

Astronomy is the study of all objects and phenomena beyond the atmospheric boundaries of the Earth. Astrophysics is a subset of astronomy and physics concerned with the attributes that govern celestial objects. The differences between these disciplines were historically based on astronomy as an observational science, charged with the describing and cataloguing space, and astrophysics as a theoretical science; however, these differences are now largely semantic. Astronomers and astrophysicists today use a combination of observational and theoretical tools such as telescopes and analytical models.

Popular papers

  1. We review current understanding of star formation, outlining an overall theoretical framework and the observations that motivate it. A conception of star formation has emerged in which turbulence plays a dual role, both creating overdensities to…
  2. Libraries of stellar spectra are fundamental tools for the study of stellar populations, and both empirical and synthetic libraries have been used for this purpose. In this paper, a new library of high resolution synthetic spectra is presented,…
  3. Formulae for the line-of-sight and transverse comoving distances, proper motion distance, angular diameter distance, luminosity distance, k-correction, distance modulus, comoving volume, lookback time, age, and object intersection probability are…
  4. (Abridged) The WMAP 5-year data strongly limit deviations from the minimal LCDM model. We constrain the physics of inflation via Gaussianity, adiabaticity, the power spectrum shape, gravitational waves, and spatial curvature. We also constrain the…
  5. We present a full-sky 100 μm map that is a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed. Before using the ISSA maps, we remove the remaining artifacts from the IRAS scan…
  6. We simulate the growth of galaxies and their central supermassive black holes by implementing a suite of semi-analytic models on the output of the Millennium Run, a very large simulation of the concordance Λ cold dark matter cosmogony. Our…
  7. The cold dark matter model has become the leading theoretical paradigm for the formation of structure in the Universe. Together with the theory of cosmic inflation, this model makes a clear prediction for the initial conditions for structure…
  8. Between 1997 June and 2001 February the Two Micron All Sky Survey (2MASS) collected 25.4 Tbytes of raw imaging data covering 99.998% of the celestial sphere in the near-infrared J (1.25 μm), H (1.65 μm), and Ks (2.16 μm) bandpasses. Observations…

Popular groups

  1. National Institute for Space Research (INPE) - Brazil

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