Questions tagged [dwarf-star]
The dwarf-star tag has no usage guidance.
15 questions
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Do M dwarf stars emit the wavelengths of the electromagnetic spectrum necessary for photosynthesis?
I read a lot of press as of late about earth size planets around the habitable zone of M dwarf stars. I am not an astronomer but I assume this means that the distance will allow liquid water to exist.
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What does a fitted curve for the period of a variable star, tell me about the star?
If I have enough data of a variable star to make a light curve for it's whole period, and If I fit a function to that light curve, can that fitted function tell me anything about the properties of ...
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What kinds of stars have viable habitable zones other than G-type stars, and what would life be like orbiting them? [closed]
What would foliage, landscape, and quality of life on dwarf stars and blue stars? Would it be possible for a human to live without high-tech devices and such?
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Why are the wings of many strong lines, including hydrogen lines and most metal lines, stronger in Dwarfs than in Supergiants?
What is the reason? Is it because Dwarfs have higher surface gravity (log g), in turn related to pressure, than Supergiants so there is more contribution from van der Waals and Stark broadening?
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How do we know that 2MASS J0523-1403 is a red dwarf?
I was reading about red dwarfs, and stumbled upon this article about the least massive red dwarf, and noticed several peculiarities:
The spectral type is L2.5
The luminosity class is V
The mass is 67....
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Should BD in this sector means Brown dwarfs or Black dwarfs?
The one in the sector as BD/NS/BH. And please explain why Brown/Black dwarf should be here among neutron stars and black holes. Thank you for your help.
Source: Beech, M. (2019). Introducing the ...
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The colour of blue dwarf stars
The paper "M dwarfs: planet formation and long term evolution" describes blue dwarf stars, a hypothetical next-stage in the lifespan of red dwarf stars within a certain mass range, after which they ...
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Brown dwarf magnetic activity
I have not been able to find an answer to my question through google, and therefore ask it on this medium.
Do brown dwarfs have spots and faculae similar to other heavier stars?
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Can life on earth be supported by only a Red Dwarf star or a White Dwarf(state still hot not cooled enough yet)?(Provided it is near to the star)
Can a red dwarf star or a white dwarf have enough energy to support life on earth? How it will change the climate and the seasons of earth if it is our only star? (energy source)(Expecting it to ...
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Black Dwarf Capabilities
Can a black dwarf be suitable for manned exploration, once it cools down? And potentially used for space mining?
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Our Sun already a White dwarf?
I watch the discovery science channel a lot & enjoy the material about space, stars, planets, etc. In one episode the narrator states our Sun will one day become a white dwarf star. The size of ...
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Are exoplanets at dwarf stars less likely to have super-rotating atmospheres or asynchronous tidal locking?
Dwarf stars have terrestrial sized planets orbiting in habitable zones very close to them. These exoplanets are often said to be tidally locked to their star, like the Moon is to Earth, and that they ...
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What would the view be list from TRAPPIST-1g, looking back towards TRAPPIST-1? [duplicate]
There's a lot of interest with the recent discovery of seven earth sized planets around TRAPPIST-1. I saw this poster, and the NASA video says that in the system you could see a lot of other planets ...
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So, what exactly is an 'ultra-cool' dwarf star?
The TRAPPIST-1 system is around an ultra-cool dwarf star. I went looking for more information on that kind of star, and found very little. The Wikipedia article on it lengthened from a minimal stub to ...
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Solar Spectral Types and Dwarf Stars
On the following page,
http://www.uni.edu/morgans/astro/course/Notes/section2/spectraltemps.html
It mentions Main, Giants and SuperGiants.
However for Dwarf Stars (e.g. D, Sd) , do I apply Main ...
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