astronomy

PKS 2349−014

PKS 2349−014 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 PKS 2349−014 rather than just read about it. In short: PKS 2349−014 is a Seyfert type 1 galaxy and a low-redshift quasar located in the constellation of Pisces. The redshift of the object is (z) 0.173 and it was first discovered by J.G.

Key takeaways

PKS 2349−014 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PKS 2349−014 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PKS 2349−014 from memory before moving on to harder problems.

Reference excerpt

PKS 2349−014 is a Seyfert type 1 galaxy and a low-redshift quasar located in the constellation of Pisces. The redshift of the object is (z) 0.173 and it was first discovered by J.G. Bolton as a radio source in 1968 where it was designated as PKS 2349−01. It is also classified as a broad-line radio galaxy and is radio-loud.

Description PKS 2349−014 is classified as a radio-loud luminous quasar. The host galaxy is an elliptical galaxy based on a de Vaucouleurs model. Imaging by the Hubble Space Telescope (HST), described it as having a highly disturbed appearance, with large tidal arms depicted as oddly shaped, indicating an interaction with a nearby companion galaxy described as having a faint magnitude of 21.0 ± 0.3. There are several other galaxies located around the field of the object. Two smooth wisp features are found to surround PKS 2349−014, forming an almost complete ring-like structure with an extent of 20 kiloparsecs and brighter when closer to the center of the object. One of the wisps on the eastern side seems to penetrate its companion. Evidence pointed out these wisps are the remains of a bright galaxy tidally accreted by the host galaxy, indicating a complete merger prior to the interaction with the companion. The object shows an unresolved central nucleus. There is also a faint off-centered nebula extension with a low average surface brightness of 24.4 mag arcsec−2, a major and minor axis extension of 48 and 34 kiloparsecs respectively. From the nucleus on the northeast region, several traces of dust lane remnants can be seen. The spectrum of PKS 2349−014 is mainly dominated by both narrow forbidden and strong broad permitted emission lines. It is also shown the object has a post starburst stellar population mostly made up of old stars of 12 billion years with evidence of younger stars aged around 500 million years. The total stellar mass is estimated to be 12.2 × 1011 M☉ while the star formation rate is approximately 8.3 M☉ per year. A supermassive black hole mass of 8.41 ± 0.06 M☉ was calculated for PKS 2349−014 based on a Hβ line.

References

External links PKS 2349−014 on SIMBAD PKS 2349−014 on HyperLeda

Illustrations

Worked examples

Example 1 — a first encounter with PKS 2349−014

Start with the simplest possible case. Write down what PKS 2349−014 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 PKS 2349−014 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 PKS 2349−014 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 PKS 2349−014

In research: PKS 2349−014 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 PKS 2349−014 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: PKS 2349−014 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 4C objects, Active galaxies, Astronomical objects discovered in 1968, so understanding it makes those chapters shorter.
In everyday life: Look for PKS 2349−014 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 PKS 2349−014 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PKS 2349−014 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 PKS 2349−014 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PKS 2349−014 in simple terms?

PKS 2349−014 is a Seyfert type 1 galaxy and a low-redshift quasar located in the constellation of Pisces. The redshift of the object is (z) 0.173 and it was first discovered by J.G.

Why does PKS 2349−014 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 PKS 2349−014?

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 PKS 2349−014.