APH0000q6f / EPIC no: 210512752
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by jiipee
small but obvious transits w/ approx 6 days period
Posted
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by Dolorous_Edd
210512752 - https://www.cfa.harvard.edu/~avanderb/k2c4/ep210512752.html
period - 5.874608
Contamination? transits are a bit different?
Posted
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by Dolorous_Edd
UKIDSS image
LC extracted from star in red circle
Posted
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by ajamyajax
210512752: @jiipee, good spotting. Agree that's a valid transit and a possible a planet candidate.. But this LC could also be very blended as DE already noted with a nearby star and possible companion. So could be difficult to confirm. This proposal is listed in the archive: "GO4046: Lepine A search for exoplanets and close stellar/substellar companions in the local halo population."
Edit: as spotted by Planet Hunters:
http://talk.planethunters.org/#/subjects/APH0000q6fs1=2234.15 p1=5.869 d1=0.09 (2.16 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
210512752 , 2MASS J04012962+1537238 , 14.535 , 13.896 , 13.681 , 0.639 , 0.215 , ('M8V', 0.082) , ('M0V', 0.58)
au min-max 0.05 0.055
stellar diameter in solar units min-max 0.48 0.61
stellar mass in solar units min-max 0.485 0.645
period in days min-max 5.864 5.866
duration in hours min-max 2.004 2.317Update: Aladin Lite image of 210512752:
Posted
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by ajamyajax in response to Dolorous Edd's comment.
Ivan, are we sure the target isn't the (possible) dim red dwarf centered in the AladinLite image I posted? You know more about these images than I do.
Posted
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by Dolorous_Edd in response to ajamyajax's comment.
That giant white blob in red square
I got the impression that it is red dwarf + nearby bright star ,from the looks of it
Seems to me, Kepler cannot resolve them, Mark
Posted
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by ajamyajax in response to Dolorous Edd's comment.
Ok, that makes sense. The dimmer star just seems like the 16.773 Kep Mag to me. But I don't look at these images often. Should do more of that.
And I appreciate the help, thanks.
Update: 210512752 probably not a PC because a neighbor to 210512842 with a similar period transit.
Posted
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by davidbundy77
See also discussion here http://talk.planethunters.org/#/boards/BPH0000007/discussions/DPH0000qr5 on page 10. The light curves of the two stars are almost identical, so contamination possibly by a background eclipsing binary is likely.
Posted