astronomy

NGC 3182

NGC 3182 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 NGC 3182 rather than just read about it. In short: NGC 3182 is an unbarred spiral galaxy in the constellation Ursa Major. The galaxy lies about 110 million light years away from Earth, which means, given its apparent dimensions, that NGC 3182 is approximately 55,000 light years across.

Key takeaways

NGC 3182 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect NGC 3182 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3182 from memory before moving on to harder problems.

Reference excerpt

NGC 3182 is an unbarred spiral galaxy in the constellation Ursa Major. The galaxy lies about 110 million light years away from Earth, which means, given its apparent dimensions, that NGC 3182 is approximately 55,000 light years across. It was discovered by William Herschel on April 8, 1793.

Characteristics NGC 3182 has a circumnuclear blue ring with a radius of 5.5 arcseconds. The ring is also visible in radiowaves. The galaxy may also have a thick disk of diffuse gas, but lacks a bar. The star formation rate (SFR) estimated from Hα flux shows some enhancement in the nuclear ring of NGC 3182. SFR is estimated to be 0.006 M☉ per year. From the stellar age and [α/Fe] gradient from index measurements, abrupt star formation activity has occurred recently at the ring in NGC 3182. There is no evidence of gravitational interactions from its symmetry of stellar and gas kinematics, and thus the nuclear star formation may not be triggered by the accretion of fresh extragalactic gas. NGC 3182 hosts an active nucleus (AGN) at the center surrounded by star-forming regions from emission-line-ratio diagrams and it is categorised as a Seyfert galaxy. The gas in the ring of NGC 3182 appears to be ionized by young stars and its metallicity is even higher than the gas metallicity at the galaxy center. Such enhancement of gas metallicity may be a natural result of additional star formation from the in situ gas, possibly triggered by an AGN feedback. Although there is no evidence of kinetic feedback by strong outflows in NGC 3182, a luminous AGN is known to cause symmetric outflows by radiation pressure.

Nearby galaxies NGC 3182 is the foremost galaxy of the NGC 3182 Group. NGC 3225 is also a member of the group, along with some fainter galaxies. Other nearby galaxies include MRK 1434, UGC 5541, UGCA 206, UGC 5475, and UGC 5480.

References

External links

NGC 3182 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images NGC 3182 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with NGC 3182

Start with the simplest possible case. Write down what NGC 3182 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 NGC 3182 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 NGC 3182 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 NGC 3182

In research: NGC 3182 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 NGC 3182 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: NGC 3182 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1793, Discoveries by William Herschel, Lenticular galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3182 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 NGC 3182 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3182 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 NGC 3182 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3182 in simple terms?

Why does NGC 3182 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 NGC 3182?

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 NGC 3182.