astronomy

SDSS J133020.34+621307.7

SDSS J133020.34+621307.7 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 J133020.34+621307.7 rather than just read about it. In short: SDSS J133020.34+621307.7 also known as NYU-VAGC 0513820 and 6C B132835.3+622826, is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.239 and it was first discovered in the Sixth Cambridge Survey of Radio Sources in 1990 by astronomers.

Key takeaways

SDSS J133020.34+621307.7 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 J133020.34+621307.7 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J133020.34+621307.7 from memory before moving on to harder problems.

Reference excerpt

SDSS J133020.34+621307.7 also known as NYU-VAGC 0513820 and 6C B132835.3+622826, is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.239 and it was first discovered in the Sixth Cambridge Survey of Radio Sources in 1990 by astronomers.

Description SDSS J133020.34+621307.7 is the brightest cluster galaxy of the WHL J133020.4+621308 galaxy cluster with 38 confirmed galaxy member candidates. The R-band magnitude of the galaxy is 17.26 while the stellar velocity dispersion is found to be 226 kilometers per seconds. The galaxy effective radius is calculated to be 15.3 kiloparsecs. The R-band absolute magnitude of the galaxy is -23.20. Its nucleus is found to be active and it is categorized as a Fanaroff-Riley Class Type II radio galaxy. The total linear size is 216.1 kiloparsecs while the angular size is 57 arcseconds. There are no detections of either a radio core or hotspot features. The radio power has been found to be 27.45 × 1024 WHz−1 while the 1.4 GHz radio flux density is 158.1 mJy. A radio jet has been detected and it has a jet power of 44.90 erg s−1. A study found the radio lobes are indeed resolved. The first lobe has a projected length of 131.4 kiloparsecs while the other lobe has a projected length of 137.7 kiloparsecs. Both of the lobes are shown to have an angular separation of 22.6 and 23.6 arcseconds respectively. The angular size of the lobes are measured to be 57 arcseconds whereas the size of the lobes are 108.05 kiloparsecs. The total radio luminosity has been estimated to be 26.8 × 1024 W Hz−1. The R-band luminosity of the galaxy is 7.29 × 1010 L☉. The galaxy's optical spectrum shows presence of both hydrogen-alpha and doubly ionized oxygen emission lines with line luminosities estimated as 6.640 and 0.000 L☉. A supermassive black hole is present in the center of the galaxy with a mass of 8.35 M☉. The accretion disk luminosity is estimated as 43.53 erg s−1.

References

External links SDSS J133020.34+621307.7 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images SDSS J133020.34+621307.7 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with SDSS J133020.34+621307.7

Start with the simplest possible case. Write down what SDSS J133020.34+621307.7 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 J133020.34+621307.7 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 J133020.34+621307.7 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 J133020.34+621307.7

In research: SDSS J133020.34+621307.7 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 J133020.34+621307.7 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 J133020.34+621307.7 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1990, LEDA objects, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J133020.34+621307.7 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 J133020.34+621307.7 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J133020.34+621307.7 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 J133020.34+621307.7 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J133020.34+621307.7 in simple terms?

Why does SDSS J133020.34+621307.7 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 J133020.34+621307.7?

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 J133020.34+621307.7.