Questions tagged [dwarf-star]

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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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0answers
96 views

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 ...
5
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1answer
299 views

Black Dwarf Capabilities

Can a black dwarf be suitable for manned exploration, once it cools down? And potentially used for space mining?
3
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1answer
60 views

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?
2
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3answers
362 views

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 ...
1
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3answers
222 views

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 ...
1
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2answers
127 views

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 ...
0
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1answer
129 views

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 ...
0
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1answer
98 views

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 ...