astronomy

NGC 1375

NGC 1375 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 1375 rather than just read about it. In short: NGC 1375 is a barred lenticular galaxy in the constellation Fornax discovered by John Herschel on November 29, 1837. Distance and diameter estimates It is at an estimated distance of 28 million light years.

Key takeaways

NGC 1375 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 1375 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 1375 from memory before moving on to harder problems.

Reference excerpt

NGC 1375 is a barred lenticular galaxy in the constellation Fornax discovered by John Herschel on November 29, 1837.

Distance and diameter estimates It is at an estimated distance of 28 million light years. This distance is calculated from its estimated recession velocity, the lowest one in the entire Fornax Cluster, about 643 km/s. This led to uncertainties about its membership in the Fornax Cluster and also means that it is uncertain whether it forms a pair with another nearby galaxy in the night sky, NGC 1374. NGC 1375 may be a foreground galaxy that has nothing to do with the Fornax Cluster. NGC 1375 is a member of the NGC 1386 Group, which also includes NGC 1386, NGC 1389 and NGC 1396, galaxies with similar uncertainties in distance. Its position in the night sky is near the center of the cluster and central galaxy NGC 1399, while the closest galaxy after NGC 1374, outside the pair, is NGC 1373. NGC 1375's size in the night sky is 2.3′ x 0.9′ which, with the galaxy's distance, gives a diameter of 23,000 light-years.

Classification NGC 1375 is an early-type galaxy with a Hubble classification of SB0 pec, indicating it is a barred lenticular galaxy. Despite their name, early-type galaxies are much older than spiral galaxies, and mostly comprise old, red-colored stars. Very little star formation occurs in these galaxies; the lack of star formation in elliptical galaxies appears to start at the center and then slowly propagates outward. This is an early-type lenticular galaxy, with a similar nature to early-type ellipticals.

Boxy bulge This galaxy contains a boxy bulge. It is one of the few lenticular galaxies containing such a bulge; another is NGC 1175. Boxy bulges have been found in mostly edge-on galaxies to date. The origin of this bulge is unknown. However, recent studies show they are not possible only for edge-on galaxies but for galaxies with an inclination of less than 70°, of type S0 and Sb, like NGC 1532, also in the Fornax Cluster. Boxy bulges found in other galaxies with much less inclination include those of barred spiral galaxies NGC 3049 and IC 676.

References

External links Media related to NGC 1375 at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with NGC 1375

Start with the simplest possible case. Write down what NGC 1375 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 1375 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 1375 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 1375

In research: NGC 1375 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 1375 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 1375 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fornax, Lenticular galaxies, NGC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 1375 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 1375 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 1375 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 1375 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 1375 in simple terms?

NGC 1375 is a barred lenticular galaxy in the constellation Fornax discovered by John Herschel on November 29, 1837. Distance and diameter estimates It is at an estimated distance of 28 million light years.

Why does NGC 1375 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 1375?

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 1375.