astronomy

NGC 1358

NGC 1358 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 1358 rather than just read about it. In short: NGC 1358 is a barred lenticular galaxy with ring features located in the constellation Eridanus, approximately 190 million light-years (58.2 megaparsecs) from Earth. It is classified as a Seyfert 2 galaxy, characterized by its active galactic nucleus (AGN) powered by a supermassive black hole and exhibiting strong X-ray and infrared emissions.

Key takeaways

NGC 1358 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 1358 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 1358 from memory before moving on to harder problems.

Reference excerpt

NGC 1358 is a barred lenticular galaxy with ring features located in the constellation Eridanus, approximately 190 million light-years (58.2 megaparsecs) from Earth. It is classified as a Seyfert 2 galaxy, characterized by its active galactic nucleus (AGN) powered by a supermassive black hole and exhibiting strong X-ray and infrared emissions. It was discovered by astronomer John Herschel on 1 December 1837 during his observations from the Cape of Good Hope.

Characteristics The galaxy is notable for its Compton-thick obscuration, where the central galactic core is heavily veiled by gas and dust with column densities exceeding 1024 atoms/cm². Multi-epoch monitoring with telescopes like NuSTAR and XMM-Newton has revealed variability in its X-ray absorption, linked to AGN feeding and feedback processes.

Environment The galaxy is often imaged alongside NGC 1355.

Research Recent observations (as of 2024) using the Hubble Space Telescope (HST) have provided high-resolution O III and continuum images, enabling detailed studies of the narrow-line region (NLR) and its kinematics. Research published has explored the extents, geometries, and kinematics of the NLR in Seyfert galaxies like NGC 1358, identifying signatures of AGN-driven outflows. High ionization line images from the OASIS spectrograph and follow-up observations with Chandra and NuSTAR have further characterized the nuclear activity and obscuration. The galaxy's environment, including potential interactions with nearby galaxies like NGC 1355, has been studied to understand its evolutionary context. Analysis of its globular cluster system and outer ring structures suggests a complex formation history.

References

External links

NGC 1358 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 1358

Start with the simplest possible case. Write down what NGC 1358 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 1358 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 1358 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 1358

In research: NGC 1358 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 1358 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 1358 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eridanus (constellation), Lenticular galaxies, NGC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 1358 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 1358 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 1358 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 1358 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 1358 in simple terms?

Why does NGC 1358 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 1358?

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 1358.