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Results tagged with nova
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user 2365
For questions about stellar explosions on white dwarfs caused by runaway fusion reactions in an accreted hydrogen atmoshphere and visible as a "new star". Distinct from a supernova.
1
vote
Accepted
Do novas create a nebula? Could a planet survive if its star exploded in a nova?
A nova may leave behind a nova remnant: a shell of gas, expanding at about 1000km/s. In recurrent novae, they may be lit by light echoes from subsequent eruptions. …
- 129k
5
votes
Accepted
Difference between Supernova Type Ia and Nova
In a nova, a layer of hydrogen is pulled from a regular star, forming a kind of dense atmosphere around the white dwarf. … In a nova it is only the hydrogen atmosphere that explodes. In a supernova it is the whole carbon-oxygen star. …
- 129k
19
votes
Accepted
How will space telescopes catch T Coronae Borealis going nova?
A nova will initially brighten over a period of hours to days, and reach peak brightness a few days after the eruption begins. …
- 129k
10
votes
Accepted
Can a Nova occur outside of a binary star system?
To form a classic nova you need a white dwarf to be accreting matter, specfically hydrogen, onto its surface. … Presumably the jet catalyses the nova in a binary system in some way.
There are other situations in which a star can suddenly or explosively brighten, such as type 2 supernovae. …
- 129k
1
vote
Binocular-friendly star map to find the Recurrent Nova RS Ophiuchi?
You could generate one with Stellarium. Using the tools in the top right you can create a "telescope" with the right field of view. I used one with a 50mm diameter, and a focal length of 210mm, with …
- 129k
4
votes
Accepted
Identifying cataclysmic stellar phenomena
Any of these phenomena would be visible to the naked eye if they occured in the Milky Way, or a neighbouring galaxy (such as the Magellanic clouds) and was not obscured by dust. At the distance of sta …
- 129k
2
votes
Accepted
Tracking variable stars?
The AAVSO (American Association of Variable Star Observers) organises and tracks many variable stars. For example you can see the latest observations of T CrB (is this your "blaze star"?). At the ti …
- 129k
2
votes
Accepted
Automated (and hopefully free) systems I can subscribe to sending email or SMS text message ...
You can create a (free) account with the AAVSO, and then subscribe to the "Time Sensitive Alerts" forum. The forum will then email you any reports of brightening of T CrB that variable star observers …
- 129k