{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


ReviewSheet2ndExam - Dark nebulae – extinction&...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Astronomy 1001 – Dr. R. Humphreys Review Sheet for 2 nd Exam Observational Properties of Stars Distance (Trig parallax) Radiation Laws Brightness (apparent and absolute magnitude) distance modulus equation Atomic Structure and atomic spectra Kirchoff’s laws – continuous spectrum, emission line spectrum, absorption line spectrum (seer Ch. 3) Spectra of stars – classification spectral type and luminosity class Masses and sizes from binary stars The HR Diagram – stellar populations The Sun – example of a normal star Solar/stellar atmosphere Photosphere Chromosphere Corona Solar wind Solar activity cycle Prominences Flares Solar/stellar interiors Nuclear fusion (proton-proton chain) Hydrostatic equilibrium Thermal equilibrium Stellar Evolution
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A. Interstellar Medium and star formation Gas and dust
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Dark nebulae – extinction & reddening of starlight Emission nebulae/HII regions Regions of star formation Protostar Premain sequence star B. Low mass stars <2-5M o Main sequence – energy source and structural change Post main sequence Red giant – energy source, structural change Planetary Nebula White dwarf – election degeneracy, novae C. Massive stars >5-10M o Main sequence – red supergiant Energy sources and nucleosynthesis in core of star Supernova! Enrichment of IS medium SN1987A Crab Nebula Neutron stars and pulsars (neutron degeneracy) Black holes – event horizon=Schwarzchild radius Singularity Observational evidence – X-ray binaries Variable Stars Pulsational Variable Period – Luminosity Relation RR Lyrae Cepheids Observational Tests clusters – open and globular clusters Ages – main sequence turnoff Distances – main sequence fitting...
View Full Document

{[ snackBarMessage ]}

Page1 / 3

ReviewSheet2ndExam - Dark nebulae – extinction&...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online