astronomy

SDSS J080730.75+340041.6

SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6 rather than just read about it. In short: SDSS J080730.75+340041.6 is a massive elliptical galaxy located in the constellation of Lynx. The redshift of the galaxy is (z) 0.207 and it was first discovered by astronomers from the ROSAT All-Sky Survey in April 2000.

Key takeaways

SDSS J080730.75+340041.6 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SDSS J080730.75+340041.6 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J080730.75+340041.6 from memory before moving on to harder problems.

Reference excerpt

SDSS J080730.75+340041.6 is a massive elliptical galaxy located in the constellation of Lynx. The redshift of the galaxy is (z) 0.207 and it was first discovered by astronomers from the ROSAT All-Sky Survey in April 2000.

Description SDSS J080730.75+340041.6 is an elliptical galaxy residing as the brightest cluster galaxy of the galaxy cluster WHL J080730.7+340042, with 13 confirmed galaxy member candidates. The R-band magnitude of the galaxy is 16.39 magnitude while the absolute magnitude is -24.05. The galaxy is categorized as a fossil galaxy belonging to a fossil system called FGS 4, with its X-ray luminosity estimated to be 4.210 × 1043 erg/s and a total velocity dispersion of 263 ± 21 kilometers per second. It has an effective surface brightness of 20.23 ± 0.39 magnitudes per square arcsecond and is orientated in a position angle of 73.4 ± 1.5°. A study found it has a total star formation rate calculated to be 7.04 M☉ per year based on its doubly ionized oxygen emission line and 3.16 M☉ based on its hydrogen-alpha emission line. Its optical spectrum also contains singly ionized nitrogen and h-beta emission lines, with line fluxes of 327.36 × 10−17 erg s−1 cm−2 and 115.70 × 10−17 erg s−1 respectively. The nucleus is active and is categorized as both a blazar and a non-bent Fanaroff-Riley Class Type I radio galaxy. Radio imaging made with the Very Large Array (VLA) at 1.4 GHz frequencies detected the presence of bipolar radio jets originating from the galaxy with the radio source extent estimated to be 6.9 arcseconds. The radio flux density is 12.7 mJy at 1.4 GHz frequencies and the total radio power is 1.58 × 1024 WHz−1.

References

External links SDSS J080730.75+340041.6 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images SDSS J080730.75+340041.6 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with SDSS J080730.75+340041.6

Start with the simplest possible case. Write down what SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6

In research: SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6 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: SDSS J080730.75+340041.6 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 2000, Blazars, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J080730.75+340041.6 in simple terms?

Why does SDSS J080730.75+340041.6 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 SDSS J080730.75+340041.6?

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 SDSS J080730.75+340041.6.