astronomy

NGC 1194

NGC 1194 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 1194 rather than just read about it. In short: NGC 1194 is a lenticular galaxy located in the constellation of Cetus. The redshift of the galaxy is (z) 0.013 and it was first discovered by the French astronomer named Édouard Stephan in 1883, whom he described it as both faint and small object with a bright center.

Key takeaways

NGC 1194 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 1194 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 1194 from memory before moving on to harder problems.

Reference excerpt

NGC 1194 is a lenticular galaxy located in the constellation of Cetus. The redshift of the galaxy is (z) 0.013 and it was first discovered by the French astronomer named Édouard Stephan in 1883, whom he described it as both faint and small object with a bright center. It is also classified as a Seyfert type 2 galaxy and such contains a megamaser.

Description NGC 1194 is categorized as an inclined galaxy of type S0 with its position angle orientated at 145°. The nucleus of this galaxy has been found as active and the nuclear spectrum is shown to contain strong signatures of stellar absorption features suggesting the galaxy had undergone a recent wave of star formation. Although classified as a Seyfert Type 1 galaxy, this was later reclassified as a Seyfert Type 2 galaxy. Other studies categorized it as a Type 1.9 Seyfert galaxy instead. It has a megamaser, with its disk shown to have an inclination angle of 85° and a kinematic position angle of around 337°. The disk is also depicted as extremely large with both an outer and inner radius of 0.51 and 1.33 parsecs respectively. Observations made with Hubble Space Telescope has also found there is also radio emission present in the galaxy, described as slightly extended along the position angle of 236°. O III imaging found traces of line emission that is mainly displaced on the western side from the nucleus with two blob features separated by 0.6 arcseconds. Further evidence also discovered streams of interstellar gas towards its companion, suggesting the galaxy might have interacted with it. A study published in 2001 has discovered the continuum of the galaxy has a reddened appearance. When observed, it is likely to originate from either extinction by the stellar population or interstellar dust that has been emitted out by its own active galactic nucleus. The central supermassive black hole of NGC 1194 is also found to be the largest in any of the megamaser galaxies, with a mass of around 6.5 ± 0.4 × 107 M☉.

References

External links NGC 1194 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 1194

Start with the simplest possible case. Write down what NGC 1194 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 1194 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 1194 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 1194

In research: NGC 1194 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 1194 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 1194 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1883, Cetus (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for NGC 1194 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 1194 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 1194 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 1194 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 1194 in simple terms?

Why does NGC 1194 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 1194?

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 1194.