Planet discovered in a close triple system
And the weird thing with this system is that the pair of stars at ~12 AU should have cleared out the region in which gas giant planets are expected to form - which may mean that it is possible to form gas giants (or at least, some kind of giant planet) in the inner system after all...
Planet in a triple system
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Don. Edwards
- Posts: 1510
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- Age: 59
- With us: 22 years 7 months
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I love how they are so willing to throw out the theory of how hot gas giants form because of this system. Have they just gone dumb or is simply they can't fathom the possibility that the main star captured the other two stars millions of years ago causing the gas giant to travel inward. There are many multiple star systems that were created by the main star capturing smaller stars. I just can't believe they are not even considering this possibility. And even if the stars all did form together who is to say they always had there present orbits. Maybe the binary pair was farther out and started to wonder in closer. This would start to disrupt any other planet in the system and their orbits. I just can't believe how quick these people are to throw out everything and the baby just because they found one strange out of the ordinary system that doesn't fit there models. I think they have to look at the majority of star systems before they let one system dictate what does and doesn't work in theory.
Don.
Don.
I am officially a retired member.
I might answer a PM or a post if its relevant to something.
Ah, never say never!!
Past texture releases, Hmm let me think about it
Thanks for your understanding.
I might answer a PM or a post if its relevant to something.
Ah, never say never!!
Past texture releases, Hmm let me think about it
Thanks for your understanding.
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brunetto_64
- Posts: 112
- Joined: 12.05.2002
- With us: 22 years 10 months
- Location: Toronto
Brunetto,
Any astronomical database is only as good as the catalogs used for its data. The most recent catalog Simbad references for HD 188753 is from 1995. Simbad classifies this star as a spectrographic binary, so even the members of the brighter pair are too close together to separate visually and can only be detected by close examination of their combined spectrogram. I suspect the "second" star was discovered to be a binary only very recently, and perhaps as a result of the same survey that detected the planet.
The NASA press release at http://www.nasa.gov/vision/universe/newworlds/threesun-071305a.html, mentions "The masses of the three stars in HD 188753 system range from two-thirds to about the same mass as our Sun."
Any astronomical database is only as good as the catalogs used for its data. The most recent catalog Simbad references for HD 188753 is from 1995. Simbad classifies this star as a spectrographic binary, so even the members of the brighter pair are too close together to separate visually and can only be detected by close examination of their combined spectrogram. I suspect the "second" star was discovered to be a binary only very recently, and perhaps as a result of the same survey that detected the planet.
The NASA press release at http://www.nasa.gov/vision/universe/newworlds/threesun-071305a.html, mentions "The masses of the three stars in HD 188753 system range from two-thirds to about the same mass as our Sun."
Selden
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eburacum45
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The animation is a nice piece of 3d work, but it is probably misleading; if the planet is only 0.02 AU from the primary star, it is much closer to that star than to the others- which never get closer than 8AU.
The primary star will appear thousands of times brighter than the pair to someone on that moon; so much brighter you wouldn't be able to see the other pair of stars till after the primary had gone down. (I think)
The primary star will appear thousands of times brighter than the pair to someone on that moon; so much brighter you wouldn't be able to see the other pair of stars till after the primary had gone down. (I think)
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brunetto_64
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- Location: Toronto
@Selden, you have reason...
here:
http://vo.obspm.fr/exoplanetes/encyclo/index.php
aspect the next modernization
Thanks!!!
here:
http://vo.obspm.fr/exoplanetes/encyclo/index.php
aspect the next modernization
Thanks!!!
february 1977 the Multiple Star HD 188753 (ADS 13125)
http://articles.adsabs.harvard.edu/cgi- ... etype=.pdf
bye
windows 10 directX 12 version
celestia 1.7.0 64 bits
with a general handicap of 80% and it makes much d' efforts for the community and s' expimer, thank you d' to be understanding.
celestia 1.7.0 64 bits
with a general handicap of 80% and it makes much d' efforts for the community and s' expimer, thank you d' to be understanding.
Star in double system
BD+41 3535A <= ICI Spectral type G8V
BD+41 3535B <= ICI Spectral type K0V
voilawindows 10 directX 12 version
celestia 1.7.0 64 bits
with a general handicap of 80% and it makes much d' efforts for the community and s' expimer, thank you d' to be understanding.
celestia 1.7.0 64 bits
with a general handicap of 80% and it makes much d' efforts for the community and s' expimer, thank you d' to be understanding.