Questions tagged [betelgeuse]
Questions about α Orionis, the red supergiant star located in the "shoulder" of the constellation Orion.
13
questions
16
votes
2
answers
2k
views
What will it finally take to accurately measure the distance to Betelgeuse?
Comments below What is the maximum distance measurable with parallax? discuss challenges associated with parallax measurements of Betelgeuse and link to Wikipedia’s Betelgeuse; Distance measurements ...
- 30.7k
5
votes
1
answer
293
views
Do stars have "radio photospheres"? Are they different from their optical photospheres?
Comments below What is the maximum distance measurable with parallax? discuss challenges associated with parallax measurements of Betelgeuse and link to Wikipedia’s Betelgeuse; Distance measurements ...
- 30.7k
4
votes
1
answer
317
views
What equipment and techniques were used to study Betelgeuse's diameter in 1920?
Comments below What is the maximum distance measurable with parallax? discuss challenges associated with parallax measurements of Betelgeuse and link to Wikipedia’s Betelgeuse; Distance measurements ...
- 30.7k
10
votes
1
answer
423
views
Can New Horizons be used to measure the distance to Betelgeuse (despite its fickle photocenter)?
The New Horizons spacecraft is almost 50 AU from Earth and near-simultaneous images taken by its telescope and one on Earth have demonstrated parallax without relying on the movement of Earth in it's ...
- 30.7k
5
votes
0
answers
457
views
Why does titanium oxide around Betelgeuse produce this particular sawtooth-shaped absorption spectrum?
Betelgeuse Just Isn’t That Cool: Effective Temperature Alone Cannot Explain the Recent Dimming of Betelgeuse suggests that the recent dimming might be caused by increased optical absorption by dust ...
- 30.7k
7
votes
1
answer
329
views
Did the late 2019 "fainting" of Betelgeuse show any spectral trends that differ from it's normal variability?
update: (August 2020) With all the newest news about including what the Dr. Becky video discusses as linked in How do magnetic fields mess with astronomers' observations? I'll bet this question ...
- 30.7k
6
votes
3
answers
2k
views
What's the correct distance to Betelgeuse? [duplicate]
Reading [1], [2] and this smartphone app[3], I'm getting different answers to the question.
The smartphone app is stating 427ly. [1] states approx. 700 ly, and [2] states approx. 724ly.
Even if I ...
- 163
3
votes
3
answers
3k
views
How far from Betelgeuse is its habitable zone?
Betelgeuse is a red supergiant or hypergiant in the constellation Orion. It is one of the biggest and brightest stars seen from the Earth, and is expected to soon go supernova. The habitable zone, or ...
- 1,090
9
votes
1
answer
585
views
Will the nebula of Betelgeuse be visible to the naked eye? How bright, how large, how soon, for how long?
When Betelgeuse goes core collapse supernova it will leave a supernova remnant. Will it become visible to the naked eye? If so, in what time frame will it be visible. Will it be star like from the ...
- 11.4k
5
votes
1
answer
539
views
When Betelgeuse goes supernova, will the explosion hit any neighboring stars?
There is evidence Betelgeuse might go supernova "soon". Are there any stars in the vicinity of Betelgeuse that are close enough that they will be hit by the explosion of this supernova? What would be ...
- 17.6k
3
votes
1
answer
172
views
When we say a variable star is "fainting" does it mean something more or different than "dimming" or "fading"?
A comment below the question Does the current “fainting” of Betelgeuse show any spectral trends that differ from it's normal variability? suggests that "dimming" would be a better term, but I have a ...
- 30.7k
2
votes
2
answers
103
views
Why does the Simbad page "A.A. Michelson's Jovian Galilean-satellite interferometer" show data for Betelgeuse?
When searching for things related to How did Michelson measure the diameters of jupiter's moons using optical interferometry? I came across the ui.adsabs.harvard.edu entry A. A. Michelson's Jovian ...
- 30.7k
2
votes
2
answers
361
views
Betelgeuse in false colors, is this common?
First, take the original Betelgeuse image from ALMA and remove red and green channels. Then boost the blue channel luminosity by x10 to x20 and a lot of detail pops out.
This is the resulting image ...
- 123