astronomy

NGC 3509

NGC 3509 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 NGC 3509 rather than just read about it. In short: NGC 3509 known as Arp 335, is a barred spiral galaxy located in the constellation Leo. It is located 340 million light-years from the Solar System.

Key takeaways

NGC 3509 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect NGC 3509 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3509 from memory before moving on to harder problems.

Reference excerpt

NGC 3509 known as Arp 335, is a barred spiral galaxy located in the constellation Leo. It is located 340 million light-years from the Solar System. NGC 3509 was discovered by astronomer William Herschel on December 30, 1786.

Characteristics

NGC 3509 is a large galaxy. With a diameter of 215,000 light-years, it is much bigger than the Milky Way, which only has a diameter of at least 100,000 light-years. Its luminosity class is II-III and it has a broad HII region.

Additionally, NGC 3509 is a peculiar galaxy showing an interesting detail. It has a sweeping tidal tail feature, which seems to offer hints of evolution and makes the galaxy resemble a tadpole. According to a sketch drew by Toomre, a large tail of NGC 3509 is seen curved towards northwest while the shorter one extends southwest. Later investigations proved him wrong as it is actually a bright ridge of the galaxy's disk structure. NGC 3509 has a single undisturbed nucleus which is surrounded by dust lanes. This means it has not undergone a major disk-to-disk merger and instead had a minor merger with a smaller satellite galaxy. As the galaxy interaction between NGC 3509 and the galaxy occurs, certain starbursts are triggered in regions along its spiral arms which causes it to actively create new stars. It is also evident, NGC 3509 contain signs of neutral hydrogen. Another study proves that a galactic halo is growing in NGC 3509 through accretion of smaller galaxies, in which they leave a spur behind as they are tidally disrupted by their host galaxy. NGC 3509 is designated as Arp 335 in the Atlas of Peculiar Galaxies by Halton Arp, in which it is placed into the Miscellaneous category, M82 being the well-known galaxy in this classification.

Supernova One supernova has been discovered in NGC 3509: SN 2010bi.

SN 2010bi SN 2010bi was discovered on March 24, 2010, by G. Piginata and M. Cifuentes along with other astronomers from University of North Carolina at Chapel Hill on the behalf of the CHASE project (CHilean Automatic Supernova sEarch). SN 2010bi was found via an unfiltered image taken using the 0.41-m 'PROMPT 5' telescope located at Cerro Tololo. It was located 28".4 east and 34".6 north of the nucleus. The supernova was Type IIP in which its progenitor might be a 8-16 solar mass red supergiant.

See also List of NGC objects (3001-4000) List of NGC objects

References

External links

NGC 3509 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 NGC 3509

Start with the simplest possible case. Write down what NGC 3509 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 NGC 3509 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 NGC 3509 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 NGC 3509

In research: NGC 3509 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 NGC 3509 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: NGC 3509 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arp objects, Astronomical objects discovered in 1786, Barred spiral galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3509 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 NGC 3509 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3509 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 NGC 3509 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3509 in simple terms?

NGC 3509 known as Arp 335, is a barred spiral galaxy located in the constellation Leo. It is located 340 million light-years from the Solar System.

Why does NGC 3509 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 NGC 3509?

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 NGC 3509.