Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [astrochemistry]

The tag has no usage guidance.

5
votes
2answers
184 views

Diamonds in Neptune?

In this publication from 1981, was shown that Neptune is raining diamonds: Many of the current models of Uranus and Neptune postulate a three-layer structure, consisting of an inner rocky core, a ...
1
vote
1answer
68 views

Have caged molecules ever been observed in space?

astrosnapper@'s thorough answer to the question What is precipitable water vapor in millimeter-wave radioastronomy and how is it measured? links to the paper Observing Conditions for Submillimeter ...
3
votes
0answers
196 views

Why was helium hydride (HeH+) the universe's first molecule?

The abstract of the new Nature paper Astrophysical detection of the helium hydride ion HeH+ tell us that infrared spectroscopy from SOFIA detected ...rotational ground-state transition of HeH+ at ...
3
votes
0answers
74 views

What is the organic material in Saturn's rings?

The phys.org articleSurprising chemical complexity of Saturn's rings changing planet's upper atmosphere about the chemical complexity of Saturn's rings, quotes a member of the INMS (Thomas Cravens) as ...
2
votes
1answer
121 views

Would the dynamic pressure of the Sun’s solar wind be strong enough to trap plasma ions within an open container?

If you were to place a long cylinder, open at one end and closed at the other end, and position this cylinder so that the open end is facing the Sun, and then you were to inject plasma ions, such as ...
4
votes
1answer
145 views

What does a black hole elements consists of

what are the elements of a black hole it just says what a black hole is? there must be elements that the sun consists of right?
5
votes
1answer
65 views

Is there any difference among exoplanets in composition due to host star?

Simply put, would, say, rocky planets orbiting red dwarfs have a noticably different chemical makeup than rocky planets orbiting B-type main sequence stars? Mutatis mutandis gas giants and the other ...
4
votes
0answers
164 views

How is Phosphorus made in in stars? [duplicate]

What elements are required to fuse into phosphorus in a star. Can someone give me a step by step process please e.g 4 hydrogen nuclei fuse into one helium nuclei and then 3 helium nuclei fuse ...
7
votes
0answers
184 views

What is the limiting abundances of elements at the end of the stelliferous era?

Is there any reputable published source on expected elemental abundances at the end of the era of stellar fusion? I am here interested in the contents of galaxies; much of intergalactic gas will be ...
0
votes
1answer
72 views

How should I find a telescope for research time?

I'm an undergrad in physics and astronomy deciding to look into applying for time on a research telescope, and I'm not sure how to proceed with locating/finding telescopes that I can apply for time on....
3
votes
1answer
328 views

What is germane doing in the atmosphere of Jupiter?

Germane (GeH4) has been detected in the atmosphere Jupiter. Its formation from the elements seems to be thermodynamically unfavorable because its enthalpy of formation is positive and (I think) it ...
5
votes
1answer
131 views

What aliphatic compounds were found on Ceres, and how where they identified?

Los Angeles Times's article NASA's Dawn mission finds life's building blocks on dwarf planet Ceres says; While the scientists aren’t sure exactly what the compounds are, the fingerprint is ...
6
votes
1answer
190 views

How does this comet have alcohol in it?

Recently I read about comet C/2014 Q2 (Lovejoy).The thing got me amazed was that scientists found it was dumping ethyl alcohol all along its way, at a rate of around 300-500 bottles per second. So I ...
5
votes
1answer
525 views

What factors influence the Widmanstätten pattern in iron meteorites?

The cores of iron meteorites exhibit beautiful Widmanstätten patterns, as shown below in the Alvord meteorite (photo by Jim H): I understand these patterns form when the molton nickel-iron core of ...
5
votes
2answers
580 views

Are sulfur and phosphorus also created in the nucleosynthesis of big stars?

There are as far as I know two fusion reactions by which stars convert hydrogen to helium: The CNO cycle (for carbon–nitrogen–oxygen) and the proton–proton chain reaction. The elements created in ...
3
votes
2answers
365 views

Is the composition of stars in future made of more and more heavy elements?

In the beginning stars only consisted of the hydrogen element and due to nuclear fusion of those elements in stars and supernova's more heavy elements were created. Because of that, like our Sun, the ...
0
votes
1answer
84 views

What does this information about “upper limit column densities” and “upper limit relative abundances” mean?

I was reading the abstract of a paper regarding attempts at detection of a molecular precursor to the amino acid glycine, and I came across concepts (and notation) that I found confusing. If someone ...
5
votes
1answer
114 views

What is the distribution of organic compounds in the Milky Way Galaxy?

I imagine the answer is unknown for the entire galaxy, but I would appreciate a notion of the scales and locations of regions where astronomers have ventured at least a guess to the distribution of ...
4
votes
1answer
2k views

Has THC been detected in space?

I was wondering if and how astronomers have/had detected the molecule Tetrahydrocannabinol (THC), commonly known for it's effects in marijuana, in space. I had previously seen a hoax regarding the ...
1
vote
2answers
195 views

If there are neutron stars, would most stars be considered “proton stars”?

For example, the Sun is a giant sphere of positively charged plasma. About 72% of the elements in it are protium. This means that these protium atoms would have had to lose their electrons, right? If ...
8
votes
2answers
3k views

What happens to oxygen produced on the Sun (or other stars)?

Through nuclear fusion, the Sun can (or at the very least, someday will) produce atoms of all elements up to and including oxygen. And in terrestrial chemistry at least, when you combine oxygen, ...
19
votes
1answer
583 views

Why are there no green stars?

There are red stars, and orange stars, and yellow stars, and blue stars, and they are all understandable save the fact that there is a 'gap': There are no green stars. Is this because of hydrogen's ...
4
votes
1answer
623 views

Why is there so much methane in space?

In school I learned that methane is organic matter and that it is a possible product of crude oil refinement. However, recently I read that Uranus has huge methane storms and the Saturn moon Titan ...
2
votes
1answer
375 views

Internal heat and planetary differentiation

I was reading an article on planetary differentiation, and apparently internal heat production plays a major role. There are several sources of such heat described, such as tidal heat, radiogenic heat,...