astronomy

NGC 5098

NGC 5098 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 5098 rather than just read about it. In short: NGC 5098 are a binary pair of distant galaxies located in Canes Venatici constellation. They are made up of one Type E elliptical galaxy, PGC 46529 or NGC 5098 NED01 located east and one Type ES-0 lenticular galaxy, PGC 46515 or NGC 5098 NED02 located west.

Key takeaways

NGC 5098 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 5098 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 5098 from memory before moving on to harder problems.

Reference excerpt

NGC 5098 are a binary pair of distant galaxies located in Canes Venatici constellation. They are made up of one Type E elliptical galaxy, PGC 46529 or NGC 5098 NED01 located east and one Type ES-0 lenticular galaxy, PGC 46515 or NGC 5098 NED02 located west. Both galaxies are located 559 million light-years away from the Solar System and were discovered on April 29, 1827, by John Herschel.

Characteristics NGC 5098 belongs to the NGC 5098 galaxy group which is located some 560 million light-years away. They are the central galaxy pair, first identified by Ramella et al. 1995 "their group 80." NGC 5098 NED01 is the brighter and larger of the two, showing optical magnitudes of MB = −21.131 and MV = −22.097, as compared to MB = −20.845 and MV = −21.770 for NGC 5098 NED02, which the magnitudes were calculated from Sloan Digital Sky Survey by Adelman-McCarthy and converted to Johnson filter system via the relations provided by Smith et al. NGC 5098 NED01 hosts an extended radio source, B2 1317+33 which was detected at several frequencies. A study showed there is evidence of gas swooshing and active galactic nucleus (AGN) heating up which the most likely contributor is the nearby galaxy, NGC 5098 NED02 which is being stripped of its gaseous atmosphere. Significant cavities are present in the central region, which two distinctive bubbles are located north and northeast. They are similar to X-ray observations of other galaxies, groups and clusters. These are formed when active galactic nucleus (AGN) jets push into local ICM, evacuating cavities and creating bright rims of X-ray emission from displaced gas. A plume of emission is seen extending northeast from NGC 5098 NED01, exhibiting a spiral arm morphology which originates east from the galaxy and wrapping around to the north. This presence of a feature indicates NGC 5098 NED01 is indeed interacting with NGC 5098 NED02. Apart from that, there is a sharp surface brightness to west, southwest and south, which is approximately 28 kpc from the central AGN of NGC 5098 NED01. It appears to go eastwards and define the outer boundaries of the arm, adding to the overall impression of the spiral pattern in diffuse emission. The edges are quite similar to features that are seen from cold fronts generated by gas sloshing in observations and simulations of galaxy clusters and groups. A study shows that NGC 5098 NED02 does not show any traces of associate emission in X-rays, implying it was stripped of gas. It is possible NGC 5098 NED02 after being ram-pressured stripped and passing east of NGC 5098 NED01 might have circled around it and now moving east, creating a conical wake in diffuse emission.

References

Illustrations

Worked examples

Example 1 — a first encounter with NGC 5098

Start with the simplest possible case. Write down what NGC 5098 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 5098 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 5098 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 5098

In research: NGC 5098 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 5098 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 5098 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1827, Canes Venatici, Discoveries by John Herschel, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 5098 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study NGC 5098 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 5098 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 5098 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 5098 in simple terms?

Why does NGC 5098 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 5098?

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 5098.