astronomy

V1472 Aquilae

V1472 Aquilae 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 V1472 Aquilae rather than just read about it. In short: V1472 Aquilae is a triple star system in the equatorial constellation of Aquila. It is a variable star that ranges in brightness from 6.32 down to 6.51 The system is located at a distance of approximately 780 light years from the Sun based on parallax.

Key takeaways

V1472 Aquilae belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect V1472 Aquilae to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of V1472 Aquilae from memory before moving on to harder problems.

Reference excerpt

V1472 Aquilae is a triple star system in the equatorial constellation of Aquila. It is a variable star that ranges in brightness from 6.32 down to 6.51 The system is located at a distance of approximately 780 light years from the Sun based on parallax. It is a high-velocity star system with a radial velocity of −112 km/s. When it is at its brightest, it is very faintly visible to the naked eye under excellent observing conditions. The binary nature of the main component was announced by P. B. Lucke and M. Mayor in 1982, who found it to be a single-lined spectroscopic binary with an orbital period of 198.7 days and an eccentricity of 0.05. At the time of its discovery, it was the shortest known binary period of any class M giant. The primary is an aging red giant with a stellar classification of M2.5III. It has a diameter 104±56 times and luminosity 1,100 times that of the Sun. The star is a fast rotator with a projected rotational velocity of 10 km/s, possibly due to interaction with its companion. The variability of this star was discovered from Hipparcos data and, in 1997, it was classified as a semiregular variable with a period of 100.3727039 days. However, a plot of the light curve better matches that of an eclipsing binary or ellipsoidal variable. The 198-day orbital period produces a light curve with a primary and secondary minimum which, together with possible variations due to ellipsoidal rotation, produces the observed semiregular 100-day photometric variation. Later observations show that it is less luminous than expected for a pulsating star with its amplitude, being more typical of ellipsoidal variables, and that it has a 200.05-day period with primary and secondary minima. A co-moving companion some 4.0 magnitudes fainter than the primary lies at an angular separation of 2.7 arcseconds.

References

Illustrations

Worked examples

Example 1 — a first encounter with V1472 Aquilae

Start with the simplest possible case. Write down what V1472 Aquilae 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 V1472 Aquilae 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 V1472 Aquilae 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 V1472 Aquilae

In research: V1472 Aquilae 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 V1472 Aquilae 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: V1472 Aquilae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquila (constellation), Asymptotic-giant-branch stars, Bright Star Catalogue objects, so understanding it makes those chapters shorter.
In everyday life: Look for V1472 Aquilae 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 V1472 Aquilae in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what V1472 Aquilae 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 V1472 Aquilae out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is V1472 Aquilae in simple terms?

Why does V1472 Aquilae 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 V1472 Aquilae?

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 V1472 Aquilae.