astronomy

SDSS J092255.18+541828.2

SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2 rather than just read about it. In short: SDSS J092255.18+541828.2 also known as J092255+541828 and [VFK2015] J140.73028+54.30805, is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.337.

Key takeaways

SDSS J092255.18+541828.2 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SDSS J092255.18+541828.2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J092255.18+541828.2 from memory before moving on to harder problems.

Reference excerpt

SDSS J092255.18+541828.2 also known as J092255+541828 and [VFK2015] J140.73028+54.30805, is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.337.

Description SDSS J092255.18+541828.2 is a red luminous galaxy residing as the brightest cluster galaxy of the WHL J092255.2+541829 galaxy cluster with eight confirmed galaxy member candidates. The R-band magnitude of the galaxy is estimated to be 18.23 magnitude. The absolute magnitude of the galaxy is -22.98. The nucleus is found to be active and it has been classified as a non-bend tail Fanaroff-Riley Type II radio galaxy with its total flux density of 41.00 mJy estimated by NRAO VLA Sky Survey (NVSS) at 1.4 GHz frequencies. The total radio luminosity is found to be 25.66 W Hz-1 with the total angular size of the source being 53 arcseconds while the total linear size of the source is 255.39 kiloparsecs. There is no detection of either a radio core or hotspot features. Evidence suggested the source has a size of 48.94 arcseconds while the radio luminosity is 25.15 W Hz-1. A study finds both of the radio lobes are resolved with the lobe flux density of 0.0418 mJy and have a projected separation of 0.0135°. A radio core is also detected in additional, with the core's flux density estimated to be 0.0094 mJy. There are two Gaussian components present. The total radio power has been estimated as 17.10 × 1024 WHz-1.

References

External links SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2

Start with the simplest possible case. Write down what SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2

In research: SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2 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: SDSS J092255.18+541828.2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, LEDA objects, Radio galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J092255.18+541828.2 in simple terms?

SDSS J092255.18+541828.2 also known as J092255+541828 and [VFK2015] J140.73028+54.30805, is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.337.

Why does SDSS J092255.18+541828.2 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 SDSS J092255.18+541828.2?

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 SDSS J092255.18+541828.2.