astronomy

NGC 6137

NGC 6137 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 6137 rather than just read about it. In short: NGC 6137 is an elliptical galaxy located in the constellation of Corona Borealis. The Hubble distance of the galaxy is 137.7 ± 9.6 megaparsecs or 449 million light-years, and it was first discovered by the German-British astronomer by the name of William Herschel in 1787 but also observed by John Herschel in 1826.

Key takeaways

NGC 6137 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 6137 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 6137 from memory before moving on to harder problems.

Reference excerpt

NGC 6137 is an elliptical galaxy located in the constellation of Corona Borealis. The Hubble distance of the galaxy is 137.7 ± 9.6 megaparsecs or 449 million light-years, and it was first discovered by the German-British astronomer by the name of William Herschel in 1787 but also observed by John Herschel in 1826. It is also a member of Abell 2199.

Description NGC 6137 is classified as a head-tail radio galaxy. When observed with radio imaging, it has a radio core described as powerful (1023 Hz−1) at 5 GHz frequencies. There is also a tail extension present that elongates in an eastern direction from the galaxy corresponding to a distance of 16 kiloparsecs. Observation made with the Very Large Array (VLA) found the tail is diffused, with its direction perpendicular to a small jet. Further radio imaging by the VLA has found there are two radio jets present in the galaxy on opposite sides. These, in turn, have symmetrical appearances with an extent of 10 arcseconds and are embedded inside its optical and X-ray structure. In addition, the jets have a bending angle towards the east direction. Other observations made with Very Long Baseline Interferometry (VLBI) showed the jet is one-sided instead, with a slightly misaligned jet on parsec-scales, although it has the same orientation like the jet on kiloparsec scales at 160°. Traces of X-ray emission are also present, likely originating from the source of hot coronae. The supermassive black hole lying in the center of the galaxy is estimated to be around 6.46 × 108 M☉.

References

External links NGC 6137 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 6137

Start with the simplest possible case. Write down what NGC 6137 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 6137 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 6137 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 6137

In research: NGC 6137 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 6137 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 6137 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1787, Corona Borealis, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 6137 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 6137 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 6137 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 6137 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 6137 in simple terms?

Why does NGC 6137 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 6137?

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 6137.