astronomy

SDSS J132020.35+485409.1

SDSS J132020.35+485409.1 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 J132020.35+485409.1 rather than just read about it. In short: SDSS J132020.35+485409.1 also known as 6C B131811.2+490938 and RGZ J132020.2+485409, is a radio galaxy located in the constellation of Canes Venatici. The redshift of the galaxy is estimated to be (z) 0.232.

Key takeaways

SDSS J132020.35+485409.1 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 J132020.35+485409.1 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J132020.35+485409.1 from memory before moving on to harder problems.

Reference excerpt

SDSS J132020.35+485409.1 also known as 6C B131811.2+490938 and RGZ J132020.2+485409, is a radio galaxy located in the constellation of Canes Venatici. The redshift of the galaxy is estimated to be (z) 0.232.

Description SDSS J132020.35+485409.1 is classified as a luminous red galaxy residing as the brightest cluster galaxy (BCG) of the galaxy cluster, WHL J132020.4+485409. The r-band magnitude of the galaxy is 17.24 magnitude while the absolute magnitude is -23.07. A supermassive black hole is located in the center of the galaxy with a mass of 8.42 M☉. The optical spectrum of the galaxy displays emission lines of mainly hydrogen-alpha and doubly ionized oxygen with the line luminosities estimated as 6.612 and 6.160 L☉. The nucleus is also active and has been classified as a Fanaroff-Riley Class Type I radio galaxy. It ihas radio lobes with a total size of 78.53 kiloparsecs. The total radio luminosity is 25.53 W Hz−1. A study in 2011, had previously categorized it as a Fanaroff-Riley Class Type II radio galaxy with a total radio flux density of 69.4 mJy. The angular size of the source is 20 arcseconds while the linear size is 74.07 kiloparsecs. There no evidence of either a radio core or hot spot features. A study published in 2019, found it is a bent-tailed radio galaxy with the flux density of 65.60 mJy, obtained from the NRAO VLA Sky Survey (NVSS). The source is also bent, with its approximate bending angle measured to be 33.2. The excess bending angle is 30.4°.

References

External links SDSS J132020.35+485409.1 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 J132020.35+485409.1

Start with the simplest possible case. Write down what SDSS J132020.35+485409.1 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 J132020.35+485409.1 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 J132020.35+485409.1 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 J132020.35+485409.1

In research: SDSS J132020.35+485409.1 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 J132020.35+485409.1 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 J132020.35+485409.1 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Canes Venatici, LEDA objects, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J132020.35+485409.1 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 J132020.35+485409.1 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J132020.35+485409.1 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 J132020.35+485409.1 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J132020.35+485409.1 in simple terms?

Why does SDSS J132020.35+485409.1 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 J132020.35+485409.1?

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 J132020.35+485409.1.