astronomy

NGC 5746

NGC 5746 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 5746 rather than just read about it. In short: NGC 5746 (also known as the Mini Sombrero Galaxy) is a barred spiral galaxy located in the eastern part of the constellation of Virgo. It was discovered on 24 February 1786 by German-British astronomer William Herschel.

Key takeaways

NGC 5746 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 5746 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 5746 from memory before moving on to harder problems.

Reference excerpt

NGC 5746 (also known as the Mini Sombrero Galaxy) is a barred spiral galaxy located in the eastern part of the constellation of Virgo. It was discovered on 24 February 1786 by German-British astronomer William Herschel. It is the lead member of the NGC 5746 Group of galaxies (also known as LGG 386), itself one of the Virgo III Groups strung out to the east of the Virgo Supercluster of galaxies.

Characteristics NGC 5746 is located at a distance of 99 million light years and is seen nearly edge-on, bearing a strong resemblance with the galaxy NGC 4565, that is also seen nearly edge-on.

As with the former, it has a box-shaped bulge that is actually a bar seen from one side and a currently modest star formation activity. Investigations with the help of the x-ray space telescope Chandra seemed to detect a large cloud of gas surrounding NGC 5746 that was thought to be remnant gas of its formation in the process of being accreted; however, later research has shown that cloud does not actually exist. Seen in the infrared, NGC 5746 also shows two pseudobulges, one nested within the other – that coincides with its central bar – as well as an inner ring with a radius of 9.1 kiloparsecs and a width of 1.6 kiloparsecs.

Supernova One supernova has been observed in NGC 5746: SN 1983P (Type Ia, mag. 13) was discovered by Nunes, Pellegreni, et al. on 11 July 1983.

See also List of NGC objects (5001–6000)

References

External links Media related to NGC 5746 at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with NGC 5746

Start with the simplest possible case. Write down what NGC 5746 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 5746 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 5746 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 5746

In research: NGC 5746 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 5746 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 5746 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1786, Barred spiral galaxies, Discoveries by William Herschel, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 5746 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study NGC 5746 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 5746 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 5746 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 5746 in simple terms?

Why does NGC 5746 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 5746?

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 5746.