Which Variable Star Has the Longest Period?

AI Thread Summary
The discussion centers on identifying the variable star with the longest period, with an initial focus on Mira variables. While Mira variables typically have periods up to 700 or 1000 days, a source mentions a star with a period of 1630 days. Epsilon Aurigae is noted as a long-period pulsating variable, though it is not a Mira. The conversation highlights the challenges of studying very long period variables, particularly those in the infrared range. Overall, the quest for the longest period variable star continues, emphasizing the complexity of these celestial phenomena.
mishima
Messages
576
Reaction score
43
Hi, what is the name of the variable star with the longest period? I know Mira variables are in general the longest, but which particular star has the longest period? Thanks.
 
Astronomy news on Phys.org
Off the top of my head, I will guess Epsilon Aurigae. It's not a Mira, though.
 
Ah, sorry I meant longest period pulsating variable. One book I have gives 700 days as the upper limit for Miras, another 1000 days.
 
Still looking for this information...failed to find on AAVSO site.
 
Thank you sir, quite interesting. I suppose very long period variables are somewhat of a practical problem, even more so if in the infrared range.
 

Thread 'Potential biosignature found in Mars rock'

Publication: Redox-driven mineral and organic associations in Jezero Crater, Mars Article: NASA Says Mars Rover Discovered Potential Biosignature Last Year Press conference The ~100 authors don't find a good way this could have formed without life, but also can't rule it out. Now that they have shared their findings with the larger community someone else might find an explanation - or maybe it was actually made by life.
View full post »

Thread 'Does it make sense to build new radio telescopes?'

TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
View full post »
Thread 'Could gamma-ray bursts have an intragalactic origin?'

Thread 'Could gamma-ray bursts have an intragalactic origin?'

This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
View full post »

Similar threads

B Question: Orbital mechanics of a binary star system
Replies
5
Views
2K
B Is it possible for a giant star to have a black hole inside it?
Replies
11
Views
3K
I How Can We Measure Properties of Distant Planets and Stars?
Replies
12
Views
2K
Stargazing M - M as the distance modulus, and a question about the distance ladder
Replies
6
Views
3K
B Neutron star 4U 1820-30 spins at 716 revolutions per second
Replies
0
Views
2K
I J0524-0336, surprisingly high Li concentration
Replies
2
Views
2K
I Fourier Series and Cepheid Variables
Replies
40
Views
5K
B Vulpecula, pulsars and neutron stars
Replies
10
Views
2K
B Hot white dwarfs and pre-white dwarfs discovered with SALT, MNRAS
Replies
2
Views
2K
Stargazing Star appearing to move ping pong like rapidly
Replies
7
Views
1K

Hot Threads

Recent Insights

Back
Top