Timeline for How are we observing the newly discovered "dark galaxy" J0613+52, if it has no stars and is so far away from other galaxies?
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Feb 17 at 10:56 | vote | accept | Curious Layman | ||
| Jan 29 at 18:57 | comment | added | ProfRob | @PeterCordes indeed. Only the baryonic mass in the form of neutral hydrogen. | |
| Jan 29 at 18:56 | history | edited | ProfRob | CC BY-SA 4.0 |
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| Jan 29 at 18:52 | comment | added | Peter Cordes | baryonic mass of a cloud/galaxy - For a galaxy with stars, it wouldn't be counting mass of hydrogen inside stars, right? Because they'd be plasma, not atoms with electrons. Are we just talking about "dark galaxies" here, or is most of the hydrogen in a typical galaxy not in stars? (Or you meant to write something else, or I'm missing something...) | |
| Jan 29 at 1:03 | comment | added | John Doty | For a 21 cm radio image of an ordinary galaxy, see nrao.edu/pr/2001/m33gas | |
| Jan 28 at 14:53 | history | edited | ProfRob | CC BY-SA 4.0 |
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| Jan 28 at 13:02 | comment | added | David Hammen | I didn't have the knowledge to answer the primary question. i do have the google fu to answer the side question. References to that word are easy to find if one gives google a helping hand. Here are four such references: 1, 2, 3, 4. There are several others. | |
| Jan 28 at 10:35 | history | edited | ProfRob | CC BY-SA 4.0 |
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| Jan 28 at 10:29 | history | edited | ProfRob | CC BY-SA 4.0 |
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| Jan 28 at 8:39 | history | answered | ProfRob | CC BY-SA 4.0 |