astronomy

SDSS J150904.22+043441.8

SDSS J150904.22+043441.8 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 J150904.22+043441.8 rather than just read about it. In short: SDSS J150904.22+043441.8 is a type 2 quasar located in the constellation of Virgo. The redshift of the galaxy is (z) 0.111 and it was first discovered in the IRAS survey in 1990.

Key takeaways

SDSS J150904.22+043441.8 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 J150904.22+043441.8 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J150904.22+043441.8 from memory before moving on to harder problems.

Reference excerpt

SDSS J150904.22+043441.8 is a type 2 quasar located in the constellation of Virgo. The redshift of the galaxy is (z) 0.111 and it was first discovered in the IRAS survey in 1990. The total doubly ionized oxygen luminosity of the galaxy is estimated to be 108.56 L☉ and is also classified as a luminous infrared galaxy based on its total infrared luminosity of 11.6 L☉.

Description SDSS J150904.22+043441.8 is classified as a barred spiral galaxy of type SBa based on a study made by the Galaxy Zoo. The position angle of the galaxy is estimated to be 94° while the inclination is around 44°. The galaxy also appears as disturbed based on broad-band optical imaging, indicating either an interaction or even a past galaxy merger. The total star formation rate of the galaxy is estimated to be 34 M☉ per year based on the infrared luminosity. The supermassive black hole inside the center of the galaxy, like many others, is estimated to be 8.27 ± 0.76 M☉. The galaxy has a compact doubly ionized oxygen [O III] disk structure that is around three kiloparsecs in radius, with a feature described as fish-like towards the southeast from the galaxy. A kinematic map has also revealed it has gas rotations with negative velocity gradients on the eastern side while the western side has positive velocity gradients. Outflows have also been detected in the galaxy, with the mass of the outflows estimated to be 9 × 105 M☉ and around 0.46 M☉ per year. There also molecular outflows detected, with kinetic power reaching 4.9 × 1039 erg s−1. Observations made by the Atacama Large Millimeter Array (ALMA) also found the outflows are towards the northwest side of the galaxy at a position angle of 40° and by 3.8 kiloparsecs. A study published in 2022, has found the continuum emission of the galaxy has a peculiar morphology. It is known to follow in an inner structure of the molecular gas that is shaped into an oblong, but in the central region of the galaxy, there is an arc-like structure that does not follow the same path as the gas. Two spiral arms have also been discovered in the galaxy, being developed from inside the stellar bar region and extending outwards by four kiloparsecs northwest and in the position angle of -30° southeast. In 2025, carbon oxide, hydrogen and water, as well as aliphatic grain band absorption elements were detected in the galaxy. This suggests the nucleus of the galaxy is extremely obscured.

References

External links SDSS J150904.22+043441.8 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with SDSS J150904.22+043441.8

Start with the simplest possible case. Write down what SDSS J150904.22+043441.8 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 J150904.22+043441.8 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 J150904.22+043441.8 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 J150904.22+043441.8

In research: SDSS J150904.22+043441.8 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 J150904.22+043441.8 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 J150904.22+043441.8 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1990, Barred spiral galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J150904.22+043441.8 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “SDSS J150904.22+043441.8” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study SDSS J150904.22+043441.8 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J150904.22+043441.8 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 J150904.22+043441.8 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J150904.22+043441.8 in simple terms?

SDSS J150904.22+043441.8 is a type 2 quasar located in the constellation of Virgo. The redshift of the galaxy is (z) 0.111 and it was first discovered in the IRAS survey in 1990.

Why does SDSS J150904.22+043441.8 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 J150904.22+043441.8?

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 J150904.22+043441.8.