astronomy

RGZ J145039.8+441829

RGZ J145039.8+441829 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 RGZ J145039.8+441829 rather than just read about it. In short: RGZ J145039.8+441829 also known as OGC 688 and J145039.7+441828, is a radio galaxy located in the constellation of Boötes. The redshift of the galaxy is (z) 0.28 and it is the brightest cluster galaxy (BCG) of the galaxy cluster, WHL J145039.8+441829.

Key takeaways

RGZ J145039.8+441829 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect RGZ J145039.8+441829 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of RGZ J145039.8+441829 from memory before moving on to harder problems.

Reference excerpt

RGZ J145039.8+441829 also known as OGC 688 and J145039.7+441828, is a radio galaxy located in the constellation of Boötes. The redshift of the galaxy is (z) 0.28 and it is the brightest cluster galaxy (BCG) of the galaxy cluster, WHL J145039.8+441829.

Description RGZ J145039.8+441829 is a supergiant elliptical galaxy. The total r-band magnitude is 9.3 based on the r-band magnitude estimation made by the Sloan Digital Sky Survey (SDSS). The supermassive black hole lying in the center of the galaxy is 8.90 M☉. The nucleus is active and it has been classified as a narrow-line Fanaroff-Riley Class Type I radio galaxy. The estimated luminosities of both the hydrogen-alpha and doubly ionized oxygen emission lines are found to be 0.000 and 7.163 L☉ respectively. The radio lobes are resolved, with a total angular size of 133.54 kiloparsecs, and the lobes reach a maximum extent of 285.58 kiloparsecs in total. The total radio power is 26.32 W Hz−1. The radio source has an S-shaped appearance with a source extent of 0.33 kiloparsecs. A study published in 2022, also found it is a candidate wide-angle tail (WAT) radio galaxy, with a total radio flux density of 1.45 jansky at 150 MHz and 0.28 jansky at 1400 MHz. The radio counterpart separation is estimated to be 3.10 arcseconds while the total radio luminosity is 33.94 × 1025 W Hz−1.

References

External links RGZ J145039.8+441829 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images RGZ J145039.8+441829 on HyperLeda

Illustrations

Worked examples

Example 1 — a first encounter with RGZ J145039.8+441829

Start with the simplest possible case. Write down what RGZ J145039.8+441829 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 RGZ J145039.8+441829 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 RGZ J145039.8+441829 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 RGZ J145039.8+441829

In research: RGZ J145039.8+441829 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 RGZ J145039.8+441829 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: RGZ J145039.8+441829 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Boötes, Elliptical galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for RGZ J145039.8+441829 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 RGZ J145039.8+441829 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what RGZ J145039.8+441829 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 RGZ J145039.8+441829 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is RGZ J145039.8+441829 in simple terms?

Why does RGZ J145039.8+441829 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 RGZ J145039.8+441829?

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 RGZ J145039.8+441829.