Prepare your scantron: • Fill in your name and fill the bubbles under your name. • LAST NAME FIRST, First name second • Put your 4-digit code instead of “IDENTIFICATION NUMBER”. --- (The last 4 digits of your OleMiss ID.) Question # 1: answer A Question # 2: answer A Question # 3: answer E Setu p: ease take a moment to mute your cell phone! ease take a moment to mute your cell phone! Use a pencil, not a pen!
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Prepare your scantron: Fill in your name and fill the bubbles under your name. LAST NAME FIRST, First name second Put your 4-digit code instead of “ IDENTIFICATION.
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Prepare your scantron:• Fill in your name and fill the bubbles under your name.• LAST NAME FIRST, First name second• Put your 4-digit code instead of “IDENTIFICATION NUMBER”. --- (The last 4 digits of your OleMiss ID.)
Question # 1: answer A Question # 2: answer AQuestion # 3: answer E
Setup:
Please take a moment to mute your cell phone!Please take a moment to mute your cell phone!
Usea pencil,
not a pen!
Exercises: recognizedeep-sky objects
You’ll need to answer: which of these five typesof deep-sky objects we are looking at and
how we know and what it is:
1. open cluster2. globular cluster
3. galaxy4. planetary nebula5. diffuse nebula:
reflection nebula, HII region, dust cloud, or a combination
What is it?How do we know?
What object?
Exercise 1
Supernova remnant
Looks like result of explosionA star blew up
What is it?How do we know?
What object?Globular cluster
Many stars in sphere shapeCluster of > 100,000 stars inside
the Galaxy
What is it?
How do we know?
What object?Diffuse nebula (HII zone)
Glowing gas illuminated by blue stars
Hot interstellar hydrogen gas cloud surrounds young hot stars
What is it?How do we know?
What object?
Exercise 2
Planetary nebula
One star in the middle of colorful gasOld star loosing its atmosphere to space
What is it?How do we know?
What object?Open cluster
Many scattered starsLoose disintegrating cluster
of ~ 1,000 young starsinside the Galaxy
What is it?How do we know?
What object?Galaxy
Lens-shaped star system with dark lane Star system of 100 billion stars like
the Milky Way Galaxy
What is it?How do we know?
What object?
Exercise 3Open cluster
Many scattered starsLoose disintegrating cluster of ~ 1,000
young stars inside the Galaxy
What is it?How do we know?
What object?Diffuse nebula: HII region + dust clouds
Glowing gas, dark dust clouds in frontHot interstellar hydrogen with dust blocking some of the light. A star formation region.
What is it?How do we know?What object?Open cluster with reflection nebula
Blue cloud around bright stars Loose disintegrating cluster of ~ 1,000 young stars inside the Galaxy, light reflected on interstellar dust.
How do we know
Exercise 4
What is it?
How do we know?
What object?Supernova remnant
Looks like result of explosion
Star blew up
What is it?
Lens-shaped star system withspiral arms
What object?Galaxy
Star system of 100 billion starslike the Milky Way Galaxy
What is it?
How do we know?
What object?
Exercise 5Planetary nebula behind open cluster
Many scattered stars + One star in the middle of colorful gas
Loose disintegrating cluster of ~ 1,000 young stars inside the Galaxy + Old star loosing its atmosphere to space (unrelated)