astronomy

NGC 3448

NGC 3448 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 3448 rather than just read about it. In short: NGC 3448 is an irregular galaxy in the constellation Ursa Major. The galaxy lies about 75 million light years away from Earth, which means, given its apparent dimensions, that NGC 3448 is approximately 125,000 light years across.

Key takeaways

NGC 3448 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 3448 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3448 from memory before moving on to harder problems.

Reference excerpt

NGC 3448 is an irregular galaxy in the constellation Ursa Major. The galaxy lies about 75 million light years away from Earth, which means, given its apparent dimensions, that NGC 3448 is approximately 125,000 light years across. It was discovered by William Herschel on April 17, 1789.

Characteristics The galaxy is seen edge-on and is categorised as an amorphous galaxy with material ejected from nucleus in the Atlas of Peculiar Galaxies. The galaxy interacts with UGC 6016, a dwarf barred spiral galaxy with low surface brightness which appears perturbated. UGC 6016 lies 3.9 arcminutes away from NGC 3448. There is material between the two galaxies, probably tidal debris, and a tidal plume emanates from the side of NGC 3448 opposite of UGC 6016. Noreau and Kronberg in 1986 found there is non-continuous hydrogen bridge between the two galaxies though. The bridge is also visible in near ultraviolet. The galaxy has a central dust lane that lies at an angle of 20° with respect to the rest of the galaxy. A series of radio sources lie along the dust lane that could be supernova remnants, indicating the galaxy is undergoing intense star formation fueled by the tidal interaction. The total star formation rate is estimated to be 1.371+0.065−0.047 M☉ per year. A spiral arm is visible in radiowaves, with one more possibly present in the other side of the nucleus. The dynamics of NGC 3448 are perturbated due to tidal interaction and material is reintergrating to the galaxy, obscuring parts of the galaxy in visible light. The galaxy has a warped hydrogen disk that extends beyond the visual one, along with the tidal plumes.

Supernova One supernova has been observed in NGC 3448, SN 2014G. The supernova was discovered by Kōichi Itagaki on 14 January 2014, when it had an apparent magnitude of 15.6. The spectrum of the supernova indicates it was a Type II supernova, with initial spectra indicating a Type IIn while during its light curve post maximum indicates it was a Type II-L.

Gallery

References

External links

NGC 3448 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 NGC 3448

Start with the simplest possible case. Write down what NGC 3448 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 3448 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 3448 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 3448

In research: NGC 3448 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 3448 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 3448 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arp objects, Astronomical objects discovered in 1789, Discoveries by William Herschel, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3448 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 3448 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3448 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 3448 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3448 in simple terms?

Why does NGC 3448 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 3448?

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 3448.