Signatures of gas giant formation in binary stars

The transcript of the 14th meeting of astronomy twitter journal club. The paper discussed was "Elemental abundance differences in the 16 Cygni binary system: a signature of gas giant planet formation?" - http://arxiv.org/abs/1107.5814
biology journal CLUB
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astrojournalclub @astronomyjc
#astrojc is considering the signature of gas giant planet formation this Thurs, 20:10 GMT (as UK clocks have changed!): http://t.co/YS22UlMZ
Kash Farooq @kashfarooq
@Matt_Burleigh Changing the subject...can you explain why tonight's #astroJC paper is interesting/cool? I'm missing something I think...
Matthew R "Who Owns An Asteroid?" Francis @DrMRFrancis
Sorry, #astrojc -- desperately trying to finish a research paper, so I haven't had time to read anything. :-/
astrojournalclub @astronomyjc
Hi everyone & welcome to the 14th meeting of #astrojc. Today's topic: signatures of gas giant formation
John Gizis @johngizis
today's #astrojc topic looks good. Can differences between 16 Cyg A and B's metal content be linked to the formation of a gas giant planet?
astrojournalclub @astronomyjc
Is anyone around? Not sure how this is going to go - there didn't seem to be much interest in the paper earlier in the week #astrojc
astrojournalclub @astronomyjc
@johngizis Do you know much about the subject? What did you think of the paper? #astrojc
astrojournalclub @astronomyjc
Does anyone have any thoughts on the paper or the topic? Could metal depletion be a new way to infer the presence of a planet? #astrojc
Ken Rice @ExoKenRice
@astronomyjc Problem seems to be that gas giant planet hosts tend to be metal rich. #astrojc
Ken Rice @ExoKenRice
@astronomyjc Metal rich stars that form planets being slightly less metal rich than those that don't doesn't seem like a viable id #astrojc
astrojournalclub @astronomyjc
@wikimir Does that mean that 16 Cyg B is unusual for showing a depletion? #astrojc
astrojournalclub @astronomyjc
@wikimir So the conclusion of the paper isn't a new way to find planets, more an insight into how they might form #astrojc
Ken Rice @ExoKenRice
@astronomyjc No, still metal-rich compared to solar. B just slightly depleted compared to A #astrojc
Ken Rice @ExoKenRice
@astronomyjc That's how I would interpret it. Although hard to concentrate with a 7-yr old climbing all over me #astrojc
astrojournalclub @astronomyjc
Ok, since there's not much interest in this paper does anyone have any good paper suggestions for future meetings? #astrojc
astrojournalclub @astronomyjc
MT @johngizis: I'm afraid I don't. I do know that some T Tauri stars accretion hotspots show a deficiency in Si in the UV #astrojc
Ken Rice @ExoKenRice
@johngizis Is there a possible reason - other than planet formation - for the deficiency #astrojc
Awesome_Ph @Awesome_Ph
Sorry, I drop in a little late, see we are on topics to discuss in the future? #astrojc
Matthew R "Who Owns An Asteroid?" Francis @DrMRFrancis
#astrojc Is there a good paper about the model predicting 5 jovian planets in early Solar System, with one being ejected?
astrojournalclub @astronomyjc
@MarcelAstroph That and the paper discussion is getting going a little more now #astrojc
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