Astronomy lab 9

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lab9_galaxy_zoo.doc

GALAXY ZOO TWO

Backwards Faded Scaffolding Inquiry

Lab constructed by the University of Wyoming

Cognition in Astronomy, Physics & Earth sciences Research (CAPER) Team. http://www.uwyo.edu/caper

Big Idea: The countless and varied galaxies observed throughout the Universe have characteristics that can be classified.

Goal: Students will conduct a structured series of scaffolded scientific inquiries about the nature of observed galaxies using the Internet sites prescribed, particularly the Sloan Digital Sky Survey via Galaxy Zoo

Computer Setup:

Access http://zoo3.galaxyzoo.org/ and

a) Select REGISTER and set up a username

b) Enter your email address

c) Create and enter a security question and answer.

d) Select CREATE USER and, when set up, select CONTINUE.

NOTE: You will see a note on the site that this is an archived version of Galaxy Zoo. If you want, you can instead use http://galaxyzoo.org, but the Hubble images there are a bit harder to classify than the images at the first link (the zoo3 link), which were taken by the Sloan Digital Sky Survey (SDSS). Also, you won’t see the “How to Take Part” tutorial there. It is recommended that you use the zoo3 link, and then you can use the active version if you want to participate for real after submitting the lab.

Phase I: Tutorial: After logging into galaxyzoo.org, if you aren’t already in, select HOW TO TAKE PART and complete the online GALAXY ZOO: HUBBLE TUTORIAL, completing the tables below as you go along. You can either use text highlighting in your word processor to highlight your answers, or place an X in front of your selection.

1) Q: Is the galaxy simply smooth and rounded, with no sign of a disk? (Highlight or place an X in front of selection.)

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

Smooth

Features or Disk

Star or Artifact

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

2) Q: How rounded is it? (Highlight or place an X in front of selection.)

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

Completely Round

In Between

Cigar Shaped

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

3) Q: Could this be a disk viewed edge-on? (Highlight or place an X in front of selection.)

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

Yes, edge-on

No, not edge-on

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

4) Q: Does the galaxy have a bulge at its centre? If so, what shape? (Highlight or place an X in front of selection.)

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

Rounded

Boxy

No Bulge

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

5) Q: Is there any sign of a spiral arm pattern? (Highlight or place an X in front of selection.)

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

Spiral

No Spiral

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

6) Q: How tightly wound do the spiral arms appear? (Highlight or place an X in front of selection.)

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

Tight

Medium

Loose

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

7) Q: How many spiral arms are there? (Highlight or place an X in front of selection.)

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

1 2 3 4 >4 ?

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

8) Q: Is there a sign of a bar feature through the centre of the galaxy? (Highlight or place an X in front of selection.)

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

Bar No Bar

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

9) Q: How prominent is the central bulge, compared with the rest of the galaxy? (Highlight or place an X in front of selection.)

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

No Bulge Just Noticeable Obvious Dominant

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

10) Q: Can you identify an odd feature: a ring or an arc, or is the galaxy disturbed or irregular or is there a merger going on? (Highlight or place an X in front of selection.)

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane None

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

[ Note: more detailed descriptions of these characteristics are defined at: http://www.galaxyzoo.org/how_to_take_part ]

11) Q: Does the galaxy have a mostly clumpy appearance? (Highlight or place an X in front of selection.)

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

12) Q: How many clumps are there? (Highlight or place an X in front of selection.)

1 2 3 4

More than 4 Can’t tell

1 2 3 4

More than 4 Can’t tell

1 2 3 4

More than 4 Can’t tell

1 2 3 4

More than 4 Can’t tell

1 2 3 4

More than 4 Can’t tell

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

13) Q: Do the clumps appear in a straight line, a chain, a cluster, or a spiral? (Highlight or place an X in front of selection.)

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

Straight Line Chain

Cluster Spiral

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

14) Q: Is there one clump which is clearly brighter than the others? (Highlight or place an X in front of selection.)

Yes No

Yes No

Yes No

Yes No

Yes No

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

15) Q: Is the brightest clump central to the galaxy? (Highlight or place an X in front of selection.)

Yes No

Yes No

Yes No

Yes No

Yes No

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

16) Q: Does the galaxy appear symmetrical? (Highlight or place an X in front of selection.)

Yes No

Yes No

Yes No

Yes No

Yes No

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

17) Q: Do the clumps appear to be embedded within a larger object? (Highlight or place an X in front of selection.)

Yes No

Yes No

Yes No

Yes No

Yes No

First record your answers in the blocks above. Then, check your answers and, in the event your answer does not agree, mark a single line through your response to help you keep track. There is no penalty for having an incorrect answer.

Now you are ready to move forward!

18) At the bottom of the page, select CLICK HERE TO START CLASSIFYING to start making your own observations. Make 10 observations and place an X in front of the appropriate response. (Ignore boxes that do not apply.)

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

19) Rate the relative DIFFICULTY you had distinguishing the following by placing an X in front of the selection.

Rate the difficulty of classifying each of the following:

Nearly Impossible

Challenging

Some easy, some not

Pretty Easy

Notes or Comments

Presence of Spiral Arms

Imposs.

Chall.

Varies

Easy

Roundness of Galaxies

Imposs.

Chall.

Varies

Easy

Tightness of Spiral Arms

Imposs.

Chall.

Varies

Easy

Number of Spiral Arms

Imposs.

Chall.

Varies

Easy

Evidence of Central Bar

Imposs.

Chall.

Varies

Easy

Dominance of Central Bulge

Imposs.

Chall.

Varies

Easy

Oddness

Imposs.

Chall.

Varies

Easy

Clumpiness

Imposs.

Chall.

Varies

Easy

Number of Clumps

Imposs.

Chall.

Varies

Easy

Arrangement of Clumps

Imposs.

Chall.

Varies

Easy

Brightest Clump

Imposs.

Chall.

Varies

Easy

Symmetry

Imposs.

Chall.

Varies

Easy

Phase II – Does the Evidence Match the Conclusion?

image1.jpg20) Enter the CLASSIFY Galaxy Zoo scientific database and classify ten (10) additional images. Keep a record of your results in the “Tally Sheet” below using tick marks. Use two different colored pens or pencils to separate data for galaxies with spiral arms and galaxies without spiral arms.

TALLY SHEET

Data Table “A”

Spiral arms

Round

Edge-on

Round

Spiral

Tight arms

Bar

No bulge

In between

Boxy

Medium

Noticeable

No spiral

Cigar shape

Not edge-on

No bulge

No spiral

Loose

No Bar

Obvious

Dominant

20B-OPTIONAL: Either print this page and keep a tally using pen marks or keep track digitally by using two different colors of fonts.

21) If a student proposed a generalization that “most elliptical galaxies are cigar-shaped,” would you agree, disagree with the generalization based on all the evidence you collected SO FAR? Explain your reasoning and provide specific evidence either from the above questions or from evidence you yourself generate using Galaxy Zoo.

Phase III – What Conclusions Can You Draw From the Evidence?

Galaxies are observed to have numerous different shapes. What conclusions and generalizations can you make from the following data collected by a student in terms of DO SPIRAL GALAXIES GENERALLY EXHIBIT A CLEAR CENTRAL BULGE? Explain your reasoning and provide specific evidence, with sketches if necessary, to support your reasoning.

TALLY SHEET

Bulge Data Table

No Bulge

4

Noticeable Bulge

17

Obvious Bulge

19

Dominant Bulge

6

22) Evidence-based Conclusion:

Phase IV – What Evidence Do You Need?

Imagine your team has been assigned the task of designing a scientific observation plan for your favorite news blog about number of spiral arms a galaxy has. Describe precisely what evidence you would need to collect in order to answer the research question of, “How many arms do spiral galaxies have?”

23) Create a detailed, step-by-step description of evidence that needs to be collected and a complete explanation of how this could be done—not just “look and see how many arms are there,” but exactly what would someone need to do, step-by-step, to accomplish this. You might include a table and sketches-the goal is to be precise and detailed enough that someone else could follow your procedure.

Phase V – Formulate a Question, Pursue Evidence, and Justify Your Conclusion

Your task is design an answerable research question, propose a plan to pursue evidence, collect data using Galaxy Zoo (or another suitable source pre-approved by your lab instructor), and create an evidence-based conclusion about the characteristics of galaxies.

Research Report:

Specific Research Question:

Step-by-Step Procedure, with Sketches if Needed, to Collect Evidence:

Data Table and/or Results:

Evidence-based Conclusion Statement:

Phase VI – Summary PRINT YOUR NAME

Create a 50-word summary, in your own words, that describes the nature and characteristics of galaxies we observe in the universe. You should cite specific evidence YOU have collected in your description, not describe what you have learned in class or elsewhere. Feel free to create and label sketches to illustrate your response.

Galaxy Zoo—Hubble Data Sheet (please duplicate as necessary – ignore unused cells)

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

Image #

Smooth

Features/Disk

Star/Artifact

Round

In between

Cigar shape

Edge-on

Not edge-on

Round

Boxy

No bulge

Spiral

No spiral

Tight arms

Medium

Loose

Number of arms

Bar

No Bar

No bulge

Noticeable

Obvious

Dominant

Notes

Odd?

Yes

No

Ring Lens or Arc

Disturbed Irregular

Other Merger

Dust lane

Clumpy?

Yes

No

Number of clumps

Straight Line Chain

Cluster Spiral

Brighter clump?

Yes

No

Bright clump central?

Yes

No

Symmetrical?

Yes

No

Clumps Embedded?

Yes

No

University of Wyoming Cognition in Astronomy, Physics & Earth sciences Research (CAPER) Team 1