'Emission lines' diaporamas de présentation

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The hydrogen lines in spectral type A stars

The hydrogen lines in spectral type A stars. are most narrow for supergiants. are most narrow for main sequence stars. can not be used to estimate the luminosity of the star. are very weak and difficult to see. are useful in determining the apparent magnitude of the star.

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Far-IR/Submillimeter Astronomy

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Optical Spectroscopy

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On the nature of light - Waves

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Unstructured grids for Astrophysics Gas dynamics and radiative transfer

Unstructured grids for Astrophysics Gas dynamics and radiative transfer. C.P. Dullemond Max Planck Institute for Astronomy Heidelberg, Germany. Overview. Radiative transfer (RT) in astrophysics: Small introduction to the physics of radiative transfer

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Our Galaxy The Milky Way

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Radio Galaxies part 4

Radio Galaxies part 4. Apart from the radio the thin accretion disk around the AGN produces optical, UV, X-ray radiation. The optical spectrum emitted by the gas depends upon the abundances of different elements, local ionization, density and temperature .

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Supernovae

510 views • 34 slides

Science Opportunities in Stellar Physics

Science Opportunities in Stellar Physics. Douglas R. Gies CHARA, Georgia State Univ., gies@chara.gsu.edu and the Stellar Physics Working Group. Fundamental properties Interior structure and evolution Surface features Mass loss and outer regions Companions. General Themes. Good Reviews.

451 views • 34 slides

1B11 Foundations of Astronomy The Electromagnetic Spectrum

1B11 Foundations of Astronomy The Electromagnetic Spectrum. Liz Puchnarewicz emp@mssl.ucl.ac.uk www.ucl.ac.uk/webct www.mssl.ucl.ac.uk/. 1B11 The electromagnetic spectrum.

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Spectral Lines

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High Redshift QUASAR HOST Galaxies (Growing Galaxies with Monstrous Middles)

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Supernovae

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The Evolution of Damped Ly- a Absorbers: Element Abundances and Star Formation Rates

The Evolution of Damped Ly- a Absorbers: Element Abundances and Star Formation Rates. Varsha P. Kulkarni (Univ. of South Carolina, U.S.A.) Collaborators Donald G. York (Univ. of Chicago, U.S.A.) James T. Lauroesch (Northwestern Univ.,U.S.A. )

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Quasars

Quasars. Chapter 17. Topics. Quasars characteristics what are they? what is their energy source? where are they? how old are they? interactions of quasars and their light with other objects. Furthest known quasar (April, 2000) -- red shift 5.8

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Atomic Spectroscopy Laboratory

Atomic Spectroscopy Laboratory. Science & Engineering Magnet High Mr. Puckett. Atomic Emission Spectroscopy Laboratory.

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LSN 01-09 Last Revised: 24 Aug 10

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NEW EVOLUTIONARY MODELS OF HII GALAXIES

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Spectroscopy

Spectroscopy. Emission Lines, Absorption Lines, Atomic Excitation. Emission Line, without any doppler effect. Emission Line, without any doppler effect. Emission Line, with doppler effect, blue shifted. Two objects are moving apart at great speed. Emission Line, without any doppler effect.

241 views • 11 slides