astronomy

MACS J2211.7−0349 BCG

MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG rather than just read about it. In short: MACS J2211.7−0349 BCG (Short for MACS J2211.7−0349 Brightest Cluster Galaxy) is a massive elliptical galaxy located in the constellation of Aquarius. The redshift of the galaxy is (z) 0.396 and it is the brightest cluster galaxy (BCG) of an X-ray luminous galaxy cluster, MACS J2211.7−0349, which is also known as RXC J2211.7−0350.

Key takeaways

MACS J2211.7−0349 BCG belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect MACS J2211.7−0349 BCG to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of MACS J2211.7−0349 BCG from memory before moving on to harder problems.

Reference excerpt

MACS J2211.7−0349 BCG (Short for MACS J2211.7−0349 Brightest Cluster Galaxy) is a massive elliptical galaxy located in the constellation of Aquarius. The redshift of the galaxy is (z) 0.396 and it is the brightest cluster galaxy (BCG) of an X-ray luminous galaxy cluster, MACS J2211.7−0349, which is also known as RXC J2211.7−0350. MACS J2211.7−0349 is a BCG. The total radio power is less than 23.71 W Hz−1, while the total radio luminosity is less than 30.5 × 1038 keV s−1 Hz−1 at 1.4 GHz frequencies respectively. The estimated ellipticity of the BCG is e = 0.224 and it has a position angle of ɵ = 8.36. The BCG is also offset by 38.3 kiloparsecs from the X-ray cluster peak. The total flux density at 24 micrometer (ɥm) is 0.22 mJy, while the flux density at J-band is 0.87 mJy. The magnitude of the BCG is -26.35. The total stellar mass of MACS J2211.7−0349 BCG is estimated to be 0.835 × 1012 M☉ based on a study of stellar masses of brightest cluster galaxies conducted in May 2016. Diffused radio emission originates from the BCG, with the source having a size of 220 kiloparsecs and a measured flux density of 0.58 ± 0.05 mJy.

References

External links MACS J2211.7−0349 BCG on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images MACS J2211.7−0349 BCG on HyperLeda

Illustrations

Worked examples

Example 1 — a first encounter with MACS J2211.7−0349 BCG

Start with the simplest possible case. Write down what MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG

In research: MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG 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: MACS J2211.7−0349 BCG is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquarius (constellation), Elliptical galaxies, LEDA objects, so understanding it makes those chapters shorter.
In everyday life: Look for MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MACS J2211.7−0349 BCG in simple terms?

Why does MACS J2211.7−0349 BCG 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 MACS J2211.7−0349 BCG?

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 MACS J2211.7−0349 BCG.