Planet Hunters Talk

A summary of all the common hashtags would be useful

  • si__ by si__

    Just getting into this, and the little description/explanation of common pattern types to the left of each star's recent chat window (after you hit finished/no transits) is VERY helpful. (the "here's what #variable looks like, etc" sidebar)

    I'm having trouble remembering what they all are though, since there's only one per star.

    What would be VERY helpful would be to have ALL of those summaries somewhere, as a reference. It is, after all, a tool. When i'm looking at a star I can then match it against the summaries and give it better hashtags, plus compare the standardised patterns against the actual data, rather than having to rely on my memory (which may be confused, patchy, etc).

    The help below the star data is useful, but it doesn't cover hashtags.

    Posted

  • chester_ltp by chester_ltp

    bump. good idea. i have the same problem remembering the hash tag definitions.

    Posted

  • jonbelanger by jonbelanger

    bump. just had this issue. took screen captures of them all to remember...lol enjoying all the new members yet?

    Posted

  • brainod by brainod

    just started this too, found this, lists all the descriptions: http://blog.planethunters.org/2014/11/04/suggested-talk-hashtags/

    Posted

  • Zoegas by Zoegas in response to brainod's comment.

    in the absence of the "like button" . Thanks and like 😃

    Posted

  • davidbundy77 by davidbundy77

    I think the example for the #cepheid tag is very misleading.

    According to proposal GO2041 (Molnar et al.) "Type I and II Cepheids in the K2 Campaigns 2 & 3" http://keplerscience.arc.nasa.gov/K2/docs/Campaigns/C2/GO2041_Molnar.pdf, there are only seven Cepheid variables in K2 Campaign 2 and none of their light curves look like the example in the blog. The periods are longer and the shapes are roughly sinusoidal. Here are the EPIC and 2MASS IDs and a better example on PH.

    202571062 2MASS J16240203-2910446

    202862302 2MASS J16365285-2805341

    204121113 2MASS J16095862-2334556

    204264833 2MASS J16230783-2300596

    204894575 2MASS J16025396-2022480

    205023358 2MASS J15550671-1946312

    205546706 2MASS J16111489-1651401 http://talk.planethunters.org/#/subjects/APH0000mrl

    Posted

  • MrPapillon by MrPapillon in response to brainod's comment.

    In the absence of a "like" button, I am sending brainwaves of love and karma towards your position.

    Posted

  • gabefriedman by gabefriedman

    Good idea. Hiding chat and hashtags/light curve thumbnails in hidden panels would allow a better classification flow, and enable us to quickly compare thumbnails with the current star. Much easier than trying to remember them as we go.

    Posted

  • farix by farix

    Also lets not see other's guesses before we've submitted their own.

    Posted

  • chester_ltp by chester_ltp

    i have to agree with the #cepheid issue. the picture used as example for the hash tag also doesn't show the axes.

    Posted

  • MrPapillon by MrPapillon

    I think that the #cepheid sample is showing somethink like we can see in that curve: http://talk.planethunters.org/#/subjects/APH0000dx8
    In fact a double period: one a usual pulsating, and one that has a longer period.
    I agree that the samples do not show correctly what the legend says. Usually the legend says "period > 1 day" and it is hard to see that period in the small sample image.

    Posted

  • davidbundy77 by davidbundy77

    The light curve of the archetype Delta Cephei has a period of 5.366341 days with steep rises in brightness and slower dimming. The amplitude also does not vary.

    Reference: https://en.wikipedia.org/wiki/Delta_Cephei

    Image Credit: "Delta Cephei lightcurve" by ThomasK Vbg - Own work. Licensed under CC BY-SA 3.0 via Commons

    Posted

  • MrPapillon by MrPapillon

    Looks like the right curve, here another link: https://astrosociety.org/edu/publications/tnl/57/realastro3.html
    So basically, the image sample on planethunters.org leads people to wrong assumptions and thus leading the data to poor results.

    Posted