astronomy

NGC 3049

NGC 3049 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 3049 rather than just read about it. In short: NGC 3049 is a barred spiral galaxy located in the constellation Leo. Its velocity relative to the cosmic microwave background is 1793 ± 24 km/s, which corresponds to a Hubble distance of 26.4 ± 1.9 Mpc (~86.1 million ly).

Key takeaways

NGC 3049 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 3049 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3049 from memory before moving on to harder problems.

Reference excerpt

NGC 3049 is a barred spiral galaxy located in the constellation Leo. Its velocity relative to the cosmic microwave background is 1793 ± 24 km/s, which corresponds to a Hubble distance of 26.4 ± 1.9 Mpc (~86.1 million ly). NGC 3049 was discovered by French astronomer Édouard Stephan in 1882. The luminosity class of NGC 3049 is I-II and it has a broad HI line. It also contains regions of ionized hydrogen and is a starburst galaxy. NGC 3049 is also a field galaxy, that is to say it does not belong to a cluster or group and is therefore gravitationally isolated. NGC 3049 is a galaxy whose core shines in the field of ultraviolet. It is listed in the Markarian catalog under the reference Mrk 710 (MK 710). To date, 11 non-redshift measurements yield a distance of 23.136 ± 6.782 Mpc (~75.5 million ly), which is within the Hubble distance. Note, however, that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy and that consequently the diameter of NGC 3049 could be approximately 19 .2 kpc (~62,600 ly) if Hubble distance was used to calculate it.

See also List of NGC objects (3001–4000)

External links NGC 3049 at NASA/IPAC NGC 3049 at SIMBAD

References

Illustrations

Worked examples

Example 1 — a first encounter with NGC 3049

Start with the simplest possible case. Write down what NGC 3049 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 3049 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 3049 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 3049

In research: NGC 3049 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 3049 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 3049 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1882, Barred spiral galaxies, Leo (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3049 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 3049 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3049 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 3049 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3049 in simple terms?

Why does NGC 3049 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 3049?

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 3049.