astronomy

NGC 1167

NGC 1167 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 1167 rather than just read about it. In short: NGC 1167 is a late type, lenticular, nonbarred galaxy in the Perseus constellation. It was first observed and catalogued in 1784 by the astronomer William Herschel.

Key takeaways

NGC 1167 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 1167 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 1167 from memory before moving on to harder problems.

Reference excerpt

NGC 1167 is a late type, lenticular, nonbarred galaxy in the Perseus constellation. It was first observed and catalogued in 1784 by the astronomer William Herschel.

Characteristics NGC 1167 is a massive galaxy with a giant HI disk of DHI = 160 kpc. For comparison, the Milky Way galaxy is approximately 30.6 kpc across. Astronomers suggest NGC 1167 is accumulating gas by satellite accretion, incorporating its neighboring galaxies through fairly recent mergers, expanding its disk. While this galaxy contains significant amount of gas, matter is distributed over a very large area, resulting in a relatively low surface density (less than 2 M⊙/pc). NGC 1167 has ring-like arcs where star formation is taking place. However its arcs are uncommonly thin and smooth, not showing the expected irregularities observed in star-forming regions of a galaxy's arms. Astronomers suggest this might be due to the lack of O stars within the structure. The nature of the phenomenon is yet not fully comprehended.

Radio jet In a research paper released in 2022, astronomers reported the detection of a radio jet (named B2 0258+35) on NGC 1167. Given the properties of the detected X-ray emission coming from the jet and its similarity with an extended emission from an active galactic nucleus, the researchers concluded the galaxy is presently a LINER but had an AGN in the past.

Illustrations

Worked examples

Example 1 — a first encounter with NGC 1167

Start with the simplest possible case. Write down what NGC 1167 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 1167 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 1167 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 1167

In research: NGC 1167 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 1167 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 1167 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1784, Discoveries by William Herschel, Galaxies discovered in 1784, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 1167 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 1167 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 1167 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 1167 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 1167 in simple terms?

NGC 1167 is a late type, lenticular, nonbarred galaxy in the Perseus constellation. It was first observed and catalogued in 1784 by the astronomer William Herschel.

Why does NGC 1167 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 1167?

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 1167.