astronomy

NGC 7585

NGC 7585 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 7585 rather than just read about it. In short: NGC 7585 is a lenticular galaxy with a peculiar shape resulting from an interaction between two galaxies. It is located 145 million light years away in the constellation Aquarius which, given its apparent dimensions, means that NGC 7585 is about 100,000 light years across.

Key takeaways

NGC 7585 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 7585 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 7585 from memory before moving on to harder problems.

Reference excerpt

NGC 7585 is a lenticular galaxy with a peculiar shape resulting from an interaction between two galaxies. It is located 145 million light years away in the constellation Aquarius which, given its apparent dimensions, means that NGC 7585 is about 100,000 light years across. It was discovered by William Herschel on September 20, 1784.

Characteristics NGC 7585 is a lenticular galaxy with shells. The disk of the galaxy is also present and distinct from the shells. The shells are irregular and have radial and loop form, and one of them looks like a faint outer arm. The shells are probably the result of a merger that took place over a billion years ago. The shells are bluer than the rest of the galaxy and suggestive of a spiral galaxy taking part in a merger, while other features seem to be part of the accreted galaxy. The upper limit of the molecular gas mass based on CO imaging is 107.5 M☉.

Nearby galaxies Two galaxies appear near NGC 7585. NGC 7576 is located 10.7 arcminutes southwest of NGC 7585, while NGC 7592 is located 15.2 arcminutes to the northeast. NGC 7576 is at a similar redshift with NGC 7585, but its normal shape indicates it has not interacted recently with NGC 7585. On the other hand, NGC 7592 appears disturbed, however it has double the redshift.

Gallery

References

External links Media related to NGC 7585 at Wikimedia Commons NGC 7585 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 7585

Start with the simplest possible case. Write down what NGC 7585 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 7585 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 7585 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 7585

In research: NGC 7585 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 7585 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 7585 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquarius (constellation), Arp objects, Lenticular galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 7585 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 7585 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 7585 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 7585 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 7585 in simple terms?

Why does NGC 7585 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 7585?

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 7585.