astronomy

OGC 1304

OGC 1304 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 OGC 1304 rather than just read about it. In short: OGC 1304 also known as 2MASX J16014061+2718161, is a massive spiral galaxy located in the constellation of Corona Borealis. The redshift of the galaxy is (z) 0.164 and it is categorized as a super spiral galaxy; a class of spirals considered to be larger and more distant compared to the Milky Way.

Key takeaways

OGC 1304 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect OGC 1304 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of OGC 1304 from memory before moving on to harder problems.

Reference excerpt

OGC 1304 also known as 2MASX J16014061+2718161, is a massive spiral galaxy located in the constellation of Corona Borealis. The redshift of the galaxy is (z) 0.164 and it is categorized as a super spiral galaxy; a class of spirals considered to be larger and more distant compared to the Milky Way.

Description OGC 1304 is the brightest cluster galaxy (BCG) of the galaxy cluster, GMBCG J240.41924+27.30444. The appearance of the galaxy is disturbed, with distorted spiral structure components and further evidence of two bulges being present, indicating an ongoing galaxy merger. The galaxy is also confirmed to be located inside a dense galaxy environment, with several satellite galaxies detected within its position. There are also detections of hydrogen-alpha emission in its optical spectrum. The total isophotal diameter of the galaxy is measured to be 82.3 kiloparsecs. The bulge fraction ratio has been estimated as B/T = 0.04, with the galactic disk displaying an inclination of 59° and orientated at the position angle of 180°. The disk exponential scale length is estimated to be Rd = 11.43. The inclination angle of the galaxy is 60°, while the position angle of the galaxy's major axis is 116°. A star formation rate of 1.37 M☉ per year has been estimated for the galaxy based a 12 micrometer band system by the Wide-field Infrared Survey Explorer, with a gas mass of 10.6 M☉. The total stellar mass of the stars is 11.63 M☉ via an estimation of the W-1 band luminosity. The maximum deprojected speed of the galaxy has been found to be vmax = 453 kilometers per seconds.

References

External links OGC 1304 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images OGC 1304 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with OGC 1304

Start with the simplest possible case. Write down what OGC 1304 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 OGC 1304 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 OGC 1304 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 OGC 1304

In research: OGC 1304 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 OGC 1304 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: OGC 1304 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Corona Borealis, Galaxy mergers, Principal Galaxies Catalogue objects, so understanding it makes those chapters shorter.
In everyday life: Look for OGC 1304 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 OGC 1304 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what OGC 1304 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 OGC 1304 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is OGC 1304 in simple terms?

Why does OGC 1304 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 OGC 1304?

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 OGC 1304.