astronomy

Tadpole Galaxy

Tadpole Galaxy is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tadpole Galaxy rather than just read about it. In short: The Tadpole Galaxy, also known as UGC 10214 and Arp 188, is a disrupted barred spiral galaxy located 143.6 megaparsecs (468.4 million light-years) from Earth in the northern constellation Draco. Its most dramatic feature is a trail of stars, and it has a D25.0 isophotal diameter of 171 kiloparsecs (558,000 light-years) long.

Key takeaways

Tadpole Galaxy belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tadpole Galaxy to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tadpole Galaxy from memory before moving on to harder problems.

Reference excerpt

The Tadpole Galaxy, also known as UGC 10214 and Arp 188, is a disrupted barred spiral galaxy located 143.6 megaparsecs (468.4 million light-years) from Earth in the northern constellation Draco. Its most dramatic feature is a trail of stars, and it has a D25.0 isophotal diameter of 171 kiloparsecs (558,000 light-years) long. Its size has been attributed to a merger with a smaller galaxy that is believed to have occurred about 100 million years ago. The galaxy is filled with bright blue star clusters triggered by the merger, some containing as many as one million stars. It is one of the largest known disrupted spiral galaxies of its sort. It is hypothesized that a more compact intruder galaxy crossed in front of the Tadpole Galaxy—from left to right from the perspective of Earth—and was slung around behind the Tadpole by their mutual gravitational attraction. During this close encounter, tidal forces drew out the spiral galaxy's stars, gases and dust, forming the conspicuous tail. The intruder galaxy, estimated to lie about 300,000 light-years behind the Tadpole, can be seen through foreground spiral arms at the upper left. Following its terrestrial namesake, the Tadpole Galaxy will likely lose its tail as it grows older; the tail's star clusters forming smaller satellites of the large spiral galaxy. An image of the galaxy was taken by Hubble's Advanced Camera for Surveys (ACS) in April 2002, containing 6000 background galaxies spanning billions of light-years.

Supernovae Two supernovae are known to have occurred in the Tadpole Galaxy.

SN 2007cu (Type II, mag. 18.9) was discovered by the Lick Observatory Supernova Search (LOSS) on June 27, 2007. SN 2008dq (Type Ic, mag. 18.3) was discovered by LOSS on June 25, 2008.

See also NGC 6872 NGC 262 Antennae Galaxies Mice Galaxies

Notes

References

External links Media related to Tadpole Galaxy at Wikimedia Commons NASA - This article contains text from NASA, which is in the public domain. ESA/Hubble Release

Illustrations

Worked examples

Example 1 — a first encounter with Tadpole Galaxy

Start with the simplest possible case. Write down what Tadpole Galaxy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tadpole Galaxy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tadpole Galaxy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tadpole Galaxy

In research: Tadpole Galaxy appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tadpole Galaxy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tadpole Galaxy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arp objects, Barred spiral galaxies, Draco (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for Tadpole Galaxy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tadpole Galaxy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tadpole Galaxy means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tadpole Galaxy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tadpole Galaxy in simple terms?

Why does Tadpole Galaxy matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tadpole Galaxy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tadpole Galaxy.