astronomy

IC 708

IC 708 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 IC 708 rather than just read about it. In short: IC 708 is an elliptical galaxy in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.031 and it was first discovered on May 11, 1890, by an American astronomer named Lewis Swift, who found it to be faint, small and also a round object.

Key takeaways

IC 708 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect IC 708 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of IC 708 from memory before moving on to harder problems.

Reference excerpt

IC 708 is an elliptical galaxy in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.031 and it was first discovered on May 11, 1890, by an American astronomer named Lewis Swift, who found it to be faint, small and also a round object. It is a member of the galaxy cluster, Abell 1314, which also includes the members; IC 709, IC 711 and IC 712.

Description IC 708 is categorized as a wide-angle tail (WAT) radio galaxy, although some studies have also categorized it to be a head-tail radio galaxy in addition. It contains twin jets displaying multiple knot features that terminate at the position of two radio lobes located at the south and north direction. There is also a nuclear radio component present in the source. A study published in 1981, has found the radio structure of IC 708 has a double hooked morphology based on Very Large Array (VLA) imaging. It has two trails of radio emission that flare outwards into a form of diffused emission wings located 35 kiloparsecs away from its main optical position. This suggests the galaxy is gravitationally interacting with IC 709. The E-vector position angle of linear polarization has a rough alignment towards the jet from the core position right up to around 1.8 kiloparsecs, with the polarized intensity declining 0.3 mJy per the beam area. From the core towards the jet's axis, the linear polarization percentage rises from 1% to 10%.

References

External links IC 708 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Illustrations

Worked examples

Example 1 — a first encounter with IC 708

Start with the simplest possible case. Write down what IC 708 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 IC 708 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 IC 708 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 IC 708

In research: IC 708 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 IC 708 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: IC 708 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1890, Discoveries by Lewis Swift, so understanding it makes those chapters shorter.
In everyday life: Look for IC 708 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 IC 708 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what IC 708 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 IC 708 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IC 708 in simple terms?

Why does IC 708 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 IC 708?

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 IC 708.