astronomy

UGC 6697

UGC 6697 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 UGC 6697 rather than just read about it. In short: UGC 6697 is a large irregular spiral galaxy with a bar located in the Leo constellation. It is located 378 million light-years from the Solar System and has an estimated diameter of 205,000 light-years.

Key takeaways

UGC 6697 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect UGC 6697 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of UGC 6697 from memory before moving on to harder problems.

Reference excerpt

UGC 6697 is a large irregular spiral galaxy with a bar located in the Leo constellation. It is located 378 million light-years from the Solar System and has an estimated diameter of 205,000 light-years. UGC 6697 is considered a starburst galaxy which produces high rates of star formation. The first known reference to this galaxy comes from volume II of the Catalogue of Galaxies and of Clusters of Galaxies compiled by Fritz Zwicky in 1968, where it was listed as CGCG 097-087, and its coordinates listed as 1141.2 + 2015 (epoch B1950).

Possible Jellyfish Galaxy

UGC 6697 has a particular morphology. It is considered an edge-on galaxy and such has a long tidal tail with blue color and low surface brightness which stretches out northwest. This is in fact caused by dynamic pressure. It occurs when the galaxy plunges forward into the cluster, the pressure acts on the galaxy and penetrates through high speeds causing intracluster medium. In the process, the cooler gas is compressed and expelled from the galaxy's edge thus forming a trail. The gas trail extends 100 kpc which measures 326,000 light-years in diameter. In the long run, the dynamic pressure will eventually strip the gas from the galaxy, rending it an anemic galaxy. According to observations from Chandra X-ray Observatory, it shows that more massive new stars have formed in compressed gas regions of UGC 6697 due to the result of increased dynamic stripping. These, however will explode into supernovas over the next 10 million years which its heat produces x-rays and optical light.

Companion galaxy UGC 6697 has one companion galaxy: CGCG 097-087N (also known as 2MASX J11434983+1958343). It is located 379 million light-years away and also shows signs of distortion caused by dynamic pressure. Further studies show that the two galaxies might have interacted in the past.

Supernova One supernova has been observed in UGC 6697. SN 1986C (Type II, mag. 18) was discovered by B. Leibundgut and B. Binggeli of European Southern Observatory, La Silla on March 5, 1986.

Group membership UGC 6697 is a member of the Leo Cluster which is made up of at least 70 galaxies. The other members include NGC 3805, NGC 3837, the brightest cluster member NGC 3842, NGC 3860, NGC 3883, NGC 3884, NGC 3919, NGC 3929, NGC 3937, NGC 3940, NGC 3947 and NGC 3954. Other galaxies included in the Leo Cluster are radio galaxy NGC 3862, and IC 2955.

References

Illustrations

Worked examples

Example 1 — a first encounter with UGC 6697

Start with the simplest possible case. Write down what UGC 6697 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 UGC 6697 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 UGC 6697 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 UGC 6697

In research: UGC 6697 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 UGC 6697 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: UGC 6697 is common in secondary-school and first-year university syllabi. It links to neighbouring topics IRAS catalogue objects, LEDA objects, Leo (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for UGC 6697 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 UGC 6697 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what UGC 6697 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 UGC 6697 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is UGC 6697 in simple terms?

Why does UGC 6697 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 UGC 6697?

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 UGC 6697.