Outline for today I

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Outline for today I

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Outline for today II

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Teacher

erik.zackrisson@physics.uu.se

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Course homepage

www.astro.uu.se/~ez/kurs/Galaxies19.html

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Course literature

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Intermission: What is this?

Gas, dust or stars?

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Examination

But no written test!

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Exercise sessions

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Exercise sessions

No-show or not actively participating  Need to complete more hand-in exercises

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Exercise session I: Fermi problems

Compete in teams - win marvelous prizes!

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Exercises and solutions on the

course homepage

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Hand-in exercises

Note: If you didn’t actively participate in the exercise sessions, you need to hand in additional exercises – please contact me if this situation should arise

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Intermission: What is this?

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Literature exercise

http://adsabs.harvard.edu/abstract_service.html http://www.arxiv.org

May 17

• Grade: Fail, 3, 4, 5

May 28

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Required format of written report

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Suggested topics

But please feel free to suggest other topics!

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Seminars

• 1. May 13,13-15

• 2. May 16, 13-16 or May 17, 13-16 (two groups)

• 3. May 20, 15-17

• 4. May 22, 15-17

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Seminars

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Seminar I:

An amazing discovery / Crackpot?

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Seminar II: Virtual Reality Exercise

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Seminar III: Strange galaxy

What is going on here?

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Seminar IV:

The most distant galaxies

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Database exercise (“lab”)

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Schedule I

• April 26, 15—17 Includes introduction to database exercise

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Schedule II

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Grades

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Grades – example

1) Seminar 4 Grade: 4

2) Written report on literature exercise Grade: 4

3) Oral presentation on literature exercise Grade: 3

4) Report on computer exercise Grade: 5

5) Hand-in exercises Grade: 3

Calculate mean grade: (4+ 4+ 3 + 5 +3) /5 = 3.8  4 Final grade: 4:

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Sum: 6.5 weeks, i.e.  10 hp

How much time will I have to spend on this course?

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Pro tip

Notice how there is a gap in the schedule

(nothing scheduled between April 5 and April 24)?

Friendly advice: Decide on a topic for the literature

exercise early and use this time to work on the written report – otherwise things will become very hectic in the last two weeks of May

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Course Outline

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Course Outline

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Course Outline

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Course Outline

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Course Outline

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Course Outline

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Course Outline

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Course Outline

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Intermission: What is this?

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The Anatomy of Galaxies

Dark Matter Stars

Gas Dust Supermassive black hole

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Historical Background: The Milky Way

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Historical Background: Other Galaxies

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Historical Background: Active Galaxies

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Historical Background: Quasars/QSO

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Galaxy Classification

The Hubble Tuning Fork

Irregular Galaxies

Dwarf Galaxies Elliptical

Galaxies

Lenticular Galaxies

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Examples:

a=1 a=1 a=1

b=0.3 b=0.7

b=1

E0 E3 E7

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Examples:

S0 Edge-on Face-on

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Normal Spirals

Barred Spirals

• Large bulges

• Tightly wound spiral arms

• Few star-forming regions in arms

• Small bulges

• Loosely wound spiral arms

• Many star-forming regions in arms

Sa Sb Sc

SBb

SBa SBc

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Irregular galaxies (I)

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Dwarf galaxies (dE, dSph, dI…) – Low-luminosity objects

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Morphological Type?

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Morphological Type?

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What is the Point of Morphological Classification?

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Morphological Complications

X-rays UV Optical

Near-IR Far-IR

Same galaxy (M81) at different

wavelengths!

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Morphological Complications

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Morphological Complications

Wavelength Flux

Zero redshift

Wavelength Flux

Filter profile

High redshift

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The Cosmological Framework I

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The Cosmological Framework II

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The Cosmological Framework III

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The Cosmological Framework IV