astronomy

UGC 1922

UGC 1922 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 1922 rather than just read about it. In short: UGC 1922 also known as IC 226, is a giant spiral galaxy of low surface brightness located in the constellation of Triangulum. The redshift of the galaxy is (z) 0.036 and it was first discovered in December 1891, by the Austrian astronomer named Rudolph Spitaler who described it as a faint object with a small bright center.

Key takeaways

UGC 1922 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 1922 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of UGC 1922 from memory before moving on to harder problems.

Reference excerpt

UGC 1922 also known as IC 226, is a giant spiral galaxy of low surface brightness located in the constellation of Triangulum. The redshift of the galaxy is (z) 0.036 and it was first discovered in December 1891, by the Austrian astronomer named Rudolph Spitaler who described it as a faint object with a small bright center. It is part of the galaxy group called LDCE 0163.

Description UGC 1922 is a low-surface brightness galaxy shown to contain an active galactic nucleus (AGN) without a disk but has a bulge structure from which x-ray emission has been detected. Near ultraviolet emission located along the direction of a broken ring feature towards the north from the galaxy's optical center has also been detected. Other observations also detected the emissions along its own spiral arm in the northeastern direction and also from the compact regions. At 610 MHz frequencies the emission shows an extended feature in the south, while at 1420 MHz frequencies, emission is resolved as a mini-spiral feature. Two massive star forming regions have been found in the northwest direction from the center of the galaxy. The total global star formation of the galaxy is estimated to be 2.218 M☉ per year. It also underwent a recent major galaxy merger, based on a study published in 2018, that found there is an irregular feature on the northwest side of its disc. As a whole, the galaxy has an overheated stellar disk with spiral arms depicted as both clumpy and irregular. A supermassive black hole lying inside the center of the galaxy, has been estimated to be 0.39+0.18-0.15 × 106 M☉. A study published in 2003, found the galaxy shows the presence of carbon oxide emission. Based on observations, most of the emission is concentrated within its central bulge region, described as having a bright appearance. The major axis of the emission is also offset, suggesting it is located within the ring region of the central core.

Supernova One supernova has been observed in UGC 1922:

SN 1989S (Type Ia, mag. 19) was discovered by Jean Muller on 29 October 1989.

References

External links UGC 1922 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 UGC 1922

Start with the simplest possible case. Write down what UGC 1922 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 1922 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 1922 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 1922

In research: UGC 1922 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 1922 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 1922 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1891, Discoveries by Rudolf Ferdinand Spitaler, so understanding it makes those chapters shorter.
In everyday life: Look for UGC 1922 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 1922 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what UGC 1922 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 1922 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is UGC 1922 in simple terms?

Why does UGC 1922 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 1922?

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 1922.