astronomy

NGC 2336

NGC 2336 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 2336 rather than just read about it. In short: NGC 2336 is a barred spiral galaxy located in the constellation Camelopardalis. It is located at a distance of about 100 million light years from Earth, which, given its apparent dimensions, means that NGC 2336 is about 200,000 light years across.

Key takeaways

NGC 2336 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 2336 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 2336 from memory before moving on to harder problems.

Reference excerpt

NGC 2336 is a barred spiral galaxy located in the constellation Camelopardalis. It is located at a distance of about 100 million light years from Earth, which, given its apparent dimensions, means that NGC 2336 is about 200,000 light years across. It was discovered by Wilhelm Tempel in 1876.

Characteristics NGC 2336 is a barred spiral galaxy, featuring a small optical bar. At least 8 spiral arms, with numerous HII regions, emanate from the ring-like structure around the bar. This ring has a radius of approximately 34 arcseconds, which corresponds to 5.3 kpc at the distance of NGC 2336. In the large arms of the galaxy have been observed 28 HII regions that may host young massive star clusters, and for two of them the nebular emission comprises most of the flux. Three of these HII areas have ages calculated to be 100 to 300 million years and have sizes between 300 and 600 parsecs. It is suggested they are star complexes that may coexist with younger ones. The most massive of the HII regions, number 13, has a mass estimated to be (550±169)×104 M☉ and is 2,600 ly (810 pc) across. Observations in the ultraviolet showed 78 star forming regions, with two of them between the spiral arms and six at the galaxy ring. Their size is comparable to NGC 604, one of the largest nebulae in the Local Group. Star formation is more intense in the inner parts of the arms and at the ring. Scattered dust lanes which do not fit into a spiral structure have been observed in the nuclear region of the galaxy. No emission has been detected in the radiowaves and HI and Ha imaging of the nucleus of NGC 2336. The nucleus is small, with an apparent diameter of 5 arcseconds, while the bulge is large, with a radius of 17 arcseconds. In the centre of NGC 2336 lies a supermassive black hole whose mass is estimated to be 30 million (107.5) M☉ based on Ks bulge luminosity. NGC 2336 also hosts an active Type II Seyfert galactic nucleus, which was discovered by the Ultraviolet Imaging Telescope (UVIT)

Supernova One supernova has been observed in NGC 2336. SN 1987L (Type Ia, mag. 14.2) was discovered by American amateur astronomer James Dana Patchick on 16 August 1987. He used a home built 17.5" Dobsonian reflecting telescope for the visual discovery. The supernova was found as part of a team effort known as 'SUNSEARCH', started by Steve H. Lucas. Spectrography performed by William Herschel Telescope on 20–21 October 1987 concluded that it was a Type Ia supernova with its maximum approximately 100 days before.

Nearby galaxies NGC 2336 is the foremost galaxy of a small galaxy group known as the NGC 2336 group. It forms a non-interacting pair with IC 467, which lies 20 arcminutes away.

Gallery

See also List of NGC objects (2001–3000)

Notes

References

External links

NGC 2336 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 2336

Start with the simplest possible case. Write down what NGC 2336 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 2336 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 2336 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 2336

In research: NGC 2336 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 2336 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 2336 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1876, Camelopardalis, Discoveries by Wilhelm Tempel, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 2336 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 2336 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 2336 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 2336 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 2336 in simple terms?

Why does NGC 2336 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 2336?

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 2336.