Planet Hunters Talk

APH0000zm2 KId: 4352168 - Help out in indentifying the dips

  • Gingerion by Gingerion

    Ok . This lightcurve is showing two really big objects (could be planets or eclipsing binaries), with occasional dips as if ther is a smaller third object. But I noticed some wierd pattern of really small dips appearing before the both big transits (on the left side ), and then kinda move and disappear, then reapear to the right of the big transit and then go back . Twice. From Q1-1 to Q17-1 . The movement reminded me of Jovian satellites like this : http://giphy.com/gifs/space-jupiter-moons-L8wl2UYOuRGTe

    Is this a sign of planets around eclipsing binaries or potential exomoons?

    Image APH0000zm2 ,
    Metadata:
    Type: K-Dwarf, Mag: 14.343, Radius: 0.694, Kepler Id: 4352168

    Can someone verify that I am not seeing things or that glitches and whishfull thinking are taking place here?

    Q2-1 has the same situation as Q9-3 and similar distance between small dips ( on the left )
    Q6-2 has the same situation as Q14-1 and similar distance between small dips ( on the right)
    and something is off at Q12-3

    Posted

  • ajamyajax by ajamyajax in response to Gingerion's comment.

    Just an opinion, but without checking to see if your small dips are at known glitch locations, can't say for sure what those might be. But I believe the consensus is exomoon transits would not even be 'that' visible because they are just too small. But that KIC target is currently listed as an eclipsing binary and a planetary false positive for the larger eclipses anyway.

    (Kepler data for RA/Dec 287.715,39.4427)

    Kepler KIC# [Angular Separation] Kep Mag/ Teff /Stellar Radius / MAST link*

    KIC 4352168 [0'] 14.343/5115/0.866* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=4352168

    | KIC 4352168 flagged as Eclipsing_binary; False_Positive; KOI 6404.01 (FP) P/E=10.643744185/134.9422155; TCE list P/E=10.6437/139.21;

    False Positive Reason(s):Significant Secondary;

    Posted

  • Gingerion by Gingerion

    Awesome 😄
    Didn´t think that I would get a respone this fast 😃
    Thanks for the explanation. I have some other Eclipsing binaries with similar light curves saved, and I will start checking them for the similar small dips / glitches.
    The presence of eclipses strongly increases the probability that Kepler ( the observer ) is in the orbital plane of the system, and we expect that protoplanetary disks and planets are located in or close to this plane. (found that here : http://link.springer.com/article/10.1134/S1063772912100071) 😃
    And this Binary star simulator is useful http://highered.mheducation.com/olcweb/cgi/pluginpop.cgi?it=swf::100%::100%::/sites/dl/free/0072482621/78778/Binary_Nav.swf::Binary Stars Interactive

    Posted

  • ajamyajax by ajamyajax in response to Gingerion's comment.

    You are welcome but know that most of us here are just volunteer planet hunters like yourself. You have the right idea comparing other ebs though in my opinion. If the transit-like event appears in the same place on different light curves, it's likely a glitch. So best of luck and have fun looking for interesting stuff. 😃

    Posted