Astro-Physics

Results: 813



#Item
471Nuclear fusion / Stellar evolution / Light sources / Astrophysics / Stellar astronomy / White dwarf / Star / Horizontal branch / Triple-alpha process / Physics / Astronomy / Space

Homework #5 1. The Helium Main Sequence In certain (later) stages of stellar evolution, stars are largely composed of He and He fusion dominates the stellar luminosity. One can approximate such stars as lying on a He mai

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Source URL: astro.berkeley.edu

Language: English - Date: 2013-04-16 13:28:31
472Space / Polytrope / Lane–Emden equation / Luminosity / Polytropic process / Mass–luminosity relation / Stellar classification / Star / Main sequence / Astrophysics / Physics / Astronomy

Homework #1 1. The density of the interior of the sun is significantly larger than that of water. a) Provide a quantitative relation between the temperature and density of a star which indicates when we can treat it as a

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Source URL: astro.berkeley.edu

Language: English - Date: 2013-01-28 21:05:13
473Chemistry / Stellar astronomy / Star types / Nuclear fusion / Light sources / Stellar structure / CNO cycle / Star / Stellar classification / Physics / Astronomy / Stellar evolution

Homework # 31 1. Small amounts of Deuterium are made in the Big Bang. D is destroyed in the interiors of stars via the reaction p + D → 3 He + γ. The S value for D-burning is 2.5 × 10−4 keVbarn, each reaction relea

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Source URL: astro.berkeley.edu

Language: English - Date: 2013-03-06 13:06:52
474LOFAR / University of Groningen / Astronomy / Redshift / Spectral line / Stellar classification / Infrared / Electromagnetic radiation / Physics / Spectroscopy

Draft version October 8, 2014 Preprint typeset using LATEX style emulateapj v[removed]arXiv:1410.1544v1 [astro-ph.GA] 6 Oct[removed]DISCOVERY OF CARBON RADIO RECOMBINATION LINES IN M82

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Source URL: arxiv.org

Language: English - Date: 2014-10-07 20:32:17
475Stellar astronomy / Magnetism / Dark matter / Polar jet / LULI / Plasma / Stellar magnetic field / Star / White dwarf / Physics / Astrophysics / Black holes

Microsoft Word - CP jets astro_charté_ok en.docx

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Source URL: www2.cnrs.fr

Language: English - Date: 2014-10-20 03:41:15
476Reionization / Physics / Space / Galaxy / IOK-1 / Astronomy

ALMA Observation of [CII] Line and Dust Continuum of a Normally Star-forming Galaxy in Reionization Epoch Ota et al. 2014, ApJ, 792, 34 (astro-ph: arXiv:[removed]z=6.96 SF galaxy IOK-1

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Source URL: www.naoj.org

Language: English - Date: 2014-09-16 17:44:10
477Space telescopes / Astrophysics / Radio astronomy / Planck / Cosmic microwave background radiation / QUIET / Spider / Polarization / Gravitational wave / Physics / Physical cosmology / Electromagnetic radiation

Astronomy & Astrophysics manuscript no. Dust˙Polarized˙Cl˙astro-ph September 22, 2014 c ESO 2014

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Source URL: arxiv.org

Language: English - Date: 2014-09-21 20:20:50
478Physics / Light sources / Atmospheric thermodynamics / Stellar structure / Astrophysics / Convection zone / Convective overshoot / Atmospheric convection / Convection / Meteorology / Atmospheric sciences / Stellar astronomy

Homework #2 1. There are two ways to estimate the energy carried by convection. The first is that the energy flux is Fc ≈ 1/2ρvc3 ≡ Fc,1 where vc is the characteristic velocity of the convective motions. This is the

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Source URL: astro.berkeley.edu

Language: English - Date: 2013-02-12 20:41:00
479Fluid mechanics / Aerodynamics / Heat transfer / Rayleigh–Bénard convection / Rayleigh number / Dimensionless quantity / Nusselt number / Dimensional analysis / Similitude / Physics / Convection / Fluid dynamics

Dynamic similarity, the dimensionless science

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Source URL: astro.berkeley.edu

Language: English - Date: 2011-09-14 01:54:49
480Space / Astrophysics / Quasar / Radio astronomy / Astronomical surveys / Reionization / Sloan Digital Sky Survey / Redshift / Metallicity / Astronomy / Physics / Physical cosmology

Chapter 1 THE FORMATION AND EVOLUTION OF THE FIRST MASSIVE BLACK HOLES Zolt´ an Haiman Department of Astronomy, 1328 Pupin Laboratories

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Source URL: astro.berkeley.edu

Language: English - Date: 2004-01-19 22:10:00
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