Showing posts with label Planet Candidates. Show all posts
Showing posts with label Planet Candidates. Show all posts

Thursday, August 30, 2012

KIC10024862 - 600 day Eclipsing Binary or Planet?

This transit occurred in the fourth quarter of the Kepler data release in 2011. Now in Q9, another significant drop has occurred.


Here is the analysis from forum Talk member Kian Jek:
Very nice 17hr drop. Could be a 0.84x RJ planet from the transit profile. However, the Q4 transit appears to have a similar duration, so it's possible that this is a long period, P > 600d, EB and with the secondary eclipse in Q4 and the primary in Q9.

More information here and here.

Monday, August 20, 2012

KIC 2581316 - Unlisted Planet Candidate or Eclipsing Binary?


Planet Hunters forum Talk members flagged this transit for KIC 2581316 around May of 2011. There are now four observed transits through quarter 9 in the released Kepler data set. It appears that this transit was originally flagged as a false positive, but no longer appears on that list. The star has a magnitude of 11.69.

Q9 time plot




Here is Kian Jek's comment:
"From the profile it looks like a classic planetary transit, and may not be an EB after all - rapid drop offs, with a clustering of data points at a U-shaped bottom. Unfortunately we don't know the radius of the star."

Here is Daryll Lacourse's comment on Keppixseries below:
"July released target pixel files for KIC 2581316; the transits/eclipses seem visible and included within the large optimal aperture masks in each case. Contamination does not seem to be involved."




Full view






 Full view

Visit the Planet Hunters forum Talk page for more information on this transit here.


Saturday, August 4, 2012

KIC 5871985 Planet Candidate at Planet Hunters

KIC 5871985 is a planet candidate identified by Planet Hunters forum Talk members.


Here is Kian Jek's comment:

"Folded by hand to obtain a 213.25d period. Measured depth of 1939 ppm (0.001939) and duration of 8.65h, compares well with an estimated central transit of 9hr, for a 3.51x RE planet, distance of 0.615 to 0.665AU, a Teq of 198 to 206K, a little on the cold side."

Tuesday, July 24, 2012

KIC 12454613 Planet Candidate


Quarter 5 Light Curve for KIC 12454613 / APH52007327

Analysis by Kian Jek:


"No APOs seen and the normalized detrended transit plot looks quite convincing, rapid drop off, symmetrical shoulders and a flat-bottom with clustered data points. ~2.5 RE planetary object if the transit is real. Given that the transit duration is 15 hours, we should anticipate a long-period orbit ~ 1250 days, maybe more."

Sunday, July 22, 2012

Planet Hunters Unlisted Planet Candidates 2012

Here is a list of Planet Hunters (PH) planet candidates that were identified by PH Talk members. Some stars may not be currently unlisted. The data below is provided by Kian Jek. One transit was identified by the Amateur Kepler Observatory (AKO). SPH ID is a unique identification of Kepler stars used at Planet Hunters. Scroll through the quarters to observe the transits. Here is the link to the complete planet candidate data set as an Excel spread sheet.

KID 3326377.02, KID 4472818, KID 4552729, KID 5563300, KID 6025124, KID 6058816, KID 6153672, KID 6507433, KID 6779260, KID 6878240, KID 7515679, KID 7810483, KID 7899070, KID 8326342, KID 8552719, KID 8564976, KID 9480535, KID 10360722, KID 11253827.01, KID 11253827.02, KID 11392618, KID 11551692.03


Kepler ID SPH ID
1 3326377.02 SPH10141397
2 4472818 SPH10106818
3 4552729 SPH10119459
4 5563300 SPH10127373
5 6025124 SPH10019042
6 6058816 SPH10068695
7 6153672 SPH10128926
8 6507433 AKO tool
9 6779260 SPH10075954
10 6878240 SPH22761749
11 7515679 SPH10033914
12 7810483 SPH10008599
13 7899070 SPH10031213
14 8326342 SPH10048401
15 8552719 SPH10066540
16 8564976 SPH10010298
17 9480535 SPH10111579
18 10360722 SPH10087907
19 11253827.01 SPH10080844
20 11253827.02 SPH10080844
21 11392618 SPH10137415
22 11551692.03 SPH10045214

An Automated Search for Transiting Exocomets- HD 182952 (KIC 8027456)

A team of astronomers led by Grant M. Kennedy , discovered a potential third comet system in the Kepler prime field data of HD 182952 (KIC...