astronomy

NGC 5679 Group

NGC 5679 Group 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 5679 Group rather than just read about it. In short: The NGC 5679 group, also known as Arp 274, is a triplet of galaxies, MCG+1-37-36, MCG+1-37-35 and MCG+1-37-34, spanning about 200000 light-years and at some 400 million light-years from Earth in the constellation Virgo. Arp 274 refers to the Atlas of Peculiar Galaxies, compiled by Halton Arp in 1966.

Key takeaways

NGC 5679 Group 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 5679 Group to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 5679 Group from memory before moving on to harder problems.

Reference excerpt

The NGC 5679 group, also known as Arp 274, is a triplet of galaxies, MCG+1-37-36, MCG+1-37-35 and MCG+1-37-34, spanning about 200000 light-years and at some 400 million light-years from Earth in the constellation Virgo. Arp 274 refers to the Atlas of Peculiar Galaxies, compiled by Halton Arp in 1966. Galaxies 269 through 274 in his catalogue are galaxies that appear to have connected arms. NGC 5679 was imaged by Hubble in 2009, in a combination of blue, visible, infrared and Hα filters. The photograph shows that all three galaxies, especially the galaxies on the left and right, are starburst galaxies, meaning that there is currently a large amount of star formation in the galaxies. Interstellar dust can be seen between the areas of star formation. Two bright stars can be seen just above the galaxy on the right side; these are foreground stars that are actually part of our own galaxy.

Speed Redshift measurements of the three galaxies give these radial velocity values, from left to right: 7483, 8654, and 7618 km/s. The relatively high redshift for the center galaxy means that it is much farther away - about 65 million light years (20 megaparsecs) behind the other two galaxies. Thus, the center galaxy is likely a background object. The NGC 5679 group was previously thought to be interacting gravitationally, however the newer Hubble image seems to confirm suspicions that the center galaxy is not interacting, as the galaxy arms are not distorted like typical interacting galaxies.

Supernovae One supernova has been observed in NGC 5679: SN 1982D (type unknown, mag. 18) was discovered by Halton Arp and Jack W. Sulentic on 23 March 1982.

References

External links Media related to NGC 5679 at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with NGC 5679 Group

Start with the simplest possible case. Write down what NGC 5679 Group 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 5679 Group 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 5679 Group 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 5679 Group

In research: NGC 5679 Group 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 5679 Group 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 5679 Group is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arp objects, Galaxy clusters, NGC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 5679 Group 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 5679 Group in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 5679 Group 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 5679 Group out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 5679 Group in simple terms?

Why does NGC 5679 Group 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 5679 Group?

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 5679 Group.