2024 MS Science Olympiad – Stars

Videos

Khan Academy

Parallax in observing stars

Stellar parallax

Stellar distance using parallax

Stellar parallax clarification

Parsec definition

Birth of Stars

Becoming a red giant

White and black dwarfs

Life cycle of massive stars

Supernova

Black holes

Super massive black holes

Quasars

Galactic collisions

Cepheid variables

Why Cepheids pulsate

Crash Course Astronomy

The Sun: Crash Course Astronomy #10

Light: Crash Course Astronomy #24

Distances: Crash Course Astronomy #25

Stars: Crash Course Astronomy #26

Low Mass Stars: Crash Course Astronomy #29

White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30

High Mass Stars: Crash Course Astronomy #31

Neutron Stars: Crash Course Astronomy #32

Black Holes: Crash Course Astronomy #33

Binary and Multiple Stars: Crash Course Astronomy #34

Star Clusters: Crash Course Astronomy #35

Nebulae: Crash Course Astronomy #36

The Milky Way: Crash Course Astronomy #37

Galaxies, part 1: Crash Course Astronomy #38

Galaxies, part 2: Crash Course Astronomy #39

Gamma-Ray Bursts: Crash Course Astronomy #40

Dark Matter: Crash Course Astronomy #41

The Big Bang, Cosmology part 1: Crash Course Astronomy #42

Dark Energy, Cosmology part 2: Crash Course Astronomy #43

A Brief History of the Universe: Crash Course Astronomy #44

Deep Time: Crash Course Astronomy #45

Planet Hunters 

What does stellar variability look like for different types of stars?

How do you estimate a star’s mass and radius using asteroseismology?

Terms

Protostar

Pre-main-sequence star

T Tauri Star

Herbig Ae/Be stars

Hayashi tracks (and Henyey tracks)

Proto-Stars –

– YSO : Young Stellar Objects – comprise two groups – 1) proto-stars and 2) pre-main sequence stars
– PMS : Pre-Main Sequence

https://home.ifa.hawaii.edu/users/jpw/classes/star_formation/lectures/protostars.pdf

spectral index
http://astro.vaporia.com/start/spectralindex.html

young stellar object
http://astro.vaporia.com/start/yso.html

 

 

HR Diagrams – Main Sequence Stars

https://homepage.physics.uiowa.edu/~pkaaret/s09/L12_starsmainseq.pdf

 

Objects

Carina (sh): HD 95086, NGC 3324

Cygnus (nh): V1057 Cygni

Dorado (sh): 30 Doradus  (Tarantula Nebula)

Libra (sh): HD 141569

Musca (sh): HD 100546

Ophiuchus (equator): Barnard 68

Orion (equator)FU Orionis, HOPS 383M42 (Orion Nebula)

Pegasus (nh): Stephan’s Quintet

Perseus (nh):  NGC 1333

Sextans (equator) : Baby Boom Galaxy

Taurus (nh) HL Tauri, L1527NGC 1555

Vela (sh): HH 46/47, RCW 38

Volan (sh): J122051 – 491255 (typo in one of the pictures on NASA website)

Galaxy Characteristics

Dark Matter – The First Clue – velocity of stars orbiting a galaxy – SIWH !!!   [Link]

The Universe the Beginning and the maybe the end

Time Line of the Universe [Link]

Cosmic Inflation [Link]

Telescopes

JWST (James Webb Space Telescope)

Wikipedia [Link1]

WEBB Space Telescope home page  [Link2]

NASA – James Webb page [Link3]

Hubble

Wikipedia [Link]

Spitzer

Wikipedia [Link]

Chandra (X-ray)

Wikipedia [Link]

Roman Space Telescope

Wikipedia [Link]

ALMA

Wikipedia [Link]

ALMA Home Page [Link]

VLA

Wikipedia [Link]

NRAO VLA Home Page [Link]

Equations that come in handy – 

Parallax Distance Equation

Distance Modulus Equation   (D is in parsecs)

  mapparent magnitude = Mabsolute magnitude – 5 + 5 * log(D)

 

Newton’s version of Kepler’s Third Law

P –> period in Earth years

A –> average distance between objects in AU (astronomical units)

M’s –> solar masses

Via-Viva Equation (smaller mass is insignificant) (not so handy)

[Link]

 

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