astronomy

TXS 0211−122

TXS 0211−122 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 TXS 0211−122 rather than just read about it. In short: TXS 0211−122 is a high redshift radio galaxy located in the constellation of Cetus. The redshift of the object is (z) 2.338 and it was first discovered by R. van Ojik and other astronomers in September 1994, who found the object has an ultra steep radio spectrum.

Key takeaways

TXS 0211−122 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect TXS 0211−122 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of TXS 0211−122 from memory before moving on to harder problems.

Reference excerpt

TXS 0211−122 is a high redshift radio galaxy located in the constellation of Cetus. The redshift of the object is (z) 2.338 and it was first discovered by R. van Ojik and other astronomers in September 1994, who found the object has an ultra steep radio spectrum.

Description The host galaxy of TXS 0211−122 is found to be extremely massive, containing a bright central nucleus with a much smaller clump feature, based on imaging made by Hubble Space Telescope (HST). It is also shown to be a starburst galaxy undergoing an immense wave of star formation in its central region. The total molecular hydrogen amount of the galaxy is 1011 M☉ and it has a stellar mass of around 1.45 × 1011 M☉. The radio source is classified as a double with a Fanaroff-Riley Class Type II morphology. The flux density of the source has been estimated to be 189 mJy at 1465 MHz. A weak radio core is found between the radio lobes of the source. A curved and bent radio jet has also been discovered, extending outwards from the core towards the eastern lobe. This has been suggested to interact with the interstellar medium. A study showed the jet is driving the outflows from the galaxy. The narrow component contains interstellar gas that is both extended and elongated along the radio axis position from the south-east to north-west. On the eastern side of the nucleus, the line widths are different, with a full-width at half maximum of 300 kilometers per seconds which is more compared to the western side. The galaxy is also surrounded by a large Lyman-alpha emission nebula with polarization which increases east from the nucleus to 16.4 ± 4.6%. A shell structure is found associated with the nebula, interpreted as a product of supernovae depositing energy into the interstellar medium, thus creating expanding gas bubbles.

References

Worked examples

Example 1 — a first encounter with TXS 0211−122

Start with the simplest possible case. Write down what TXS 0211−122 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 TXS 0211−122 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 TXS 0211−122 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 TXS 0211−122

In research: TXS 0211−122 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 TXS 0211−122 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: TXS 0211−122 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Cetus (constellation), LEDA objects, so understanding it makes those chapters shorter.
In everyday life: Look for TXS 0211−122 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 TXS 0211−122 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what TXS 0211−122 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 TXS 0211−122 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is TXS 0211−122 in simple terms?

Why does TXS 0211−122 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 TXS 0211−122?

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 TXS 0211−122.