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KIC 8462852 Observations
JRehling
post Oct 15 2015, 04:45 PM
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Kepler found one very, very strange case:

http://www.theatlantic.com/science/archive...-galaxy/410023/

In a nutshell, while Kepler was observing it, the star (larger and brighter than the Sun) exhibited four dimming events that took place at irregular intervals, blocked a lot more light than a Jupiter-sized planet would block, and had a "shape" that varied in all four cases and did not resemble a planet.

This case is attracting some wild speculation… in fact, it is seemingly certain that something wild must be going on; it's just a matter of which wild scenario is the correct one.

If I had to throw my hat in the ring, I'd guess that a distant collision and breakup has placed big swarms of matter into a very long-period orbit. But there's no hypothesis that's been offered that doesn't seem problematic.
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- JRehling   KIC 8462852 Observations   Oct 15 2015, 04:45 PM
- - ZLD   Yeah, I will be patiently waiting and excited if t...   Oct 15 2015, 08:42 PM
- - scalbers   Could this be like some of the dense clouds that e...   Oct 15 2015, 10:08 PM
- - ngunn   Kepler is designed to look for transits - but how ...   Oct 15 2015, 10:09 PM
|- - JRehling   The research paper says that the properties of the...   Oct 15 2015, 10:29 PM
- - ZLD   I think the biggest peculiarity that rules out a l...   Oct 16 2015, 12:26 AM
|- - JRehling   QUOTE (ZLD @ Oct 15 2015, 05:26 PM) I thi...   Oct 16 2015, 04:27 AM
- - nprev   What spectral class is this star? Higher rotation ...   Oct 16 2015, 04:44 AM
|- - JRehling   QUOTE (nprev @ Oct 15 2015, 09:44 PM) Wha...   Oct 16 2015, 04:10 PM
- - ZLD   @JReling: Thanks for the correction. I skimmed it ...   Oct 16 2015, 05:28 AM
- - silylene   We need to account for a few facts here (see the ...   Oct 16 2015, 02:43 PM
|- - JRehling   QUOTE (silylene @ Oct 16 2015, 07:43 AM) ...   Oct 16 2015, 04:27 PM
|- - HSchirmer   QUOTE (JRehling @ Oct 16 2015, 05:27 PM) ...   Oct 17 2015, 12:41 PM
|- - silylene   QUOTE (JRehling @ Oct 16 2015, 05:27 PM) ...   Oct 21 2015, 03:33 PM
|- - JRehling   The biggest problem with the rings hypothesis is t...   Oct 21 2015, 04:04 PM
|- - HSchirmer   QUOTE (silylene @ Oct 21 2015, 03:33 PM) ...   Oct 21 2015, 04:31 PM
|- - HSchirmer   QUOTE (silylene @ Oct 21 2015, 03:33 PM) ...   Jan 27 2016, 02:20 AM
|- - Gerald   QUOTE (HSchirmer @ Jan 27 2016, 03:20 AM)...   Jan 27 2016, 11:11 AM
||- - HSchirmer   QUOTE (Gerald @ Jan 27 2016, 12:11 PM) De...   Jan 27 2016, 02:16 PM
|- - JRehling   QUOTE (HSchirmer @ Jan 26 2016, 07:20 PM)...   Jan 27 2016, 06:26 PM
- - scalbers   Here's a web page that helps explain Epsilon A...   Oct 17 2015, 01:17 PM
- - ngunn   Accepting the idea of eclipsing objects of some ki...   Oct 17 2015, 08:54 PM
|- - HSchirmer   QUOTE (ngunn @ Oct 17 2015, 08:54 PM) Acc...   Oct 18 2015, 12:07 PM
|- - JRehling   Interesting thoughts, nprev and HSchirmer. The fir...   Oct 19 2015, 08:12 PM
|- - ngunn   QUOTE (JRehling @ Oct 19 2015, 09:12 PM) ...   Oct 19 2015, 09:19 PM
|- - HSchirmer   QUOTE (JRehling @ Oct 19 2015, 09:12 PM) ...   Oct 19 2015, 09:26 PM
|- - JRehling   Comet Hale-Bopp's tail had a maximum length of...   Oct 20 2015, 02:09 AM
|- - JRehling   Another thought: A comet seen transiting its star ...   Oct 20 2015, 05:46 PM
|- - HSchirmer   QUOTE (JRehling @ Oct 20 2015, 06:46 PM) ...   Oct 20 2015, 06:50 PM
- - Hungry4info   Look at the light curve. A dark sphere transiting ...   Oct 20 2015, 12:48 AM
- - Rittmann   I was wondering... How much obscuring could happe...   Oct 20 2015, 08:49 PM
- - ngunn   I'm still not buying the comets idea, sorry.   Oct 20 2015, 09:54 PM
- - Explorer1   But as long as the parent planet's spin axis i...   Oct 21 2015, 04:13 PM
|- - Mongo   QUOTE (Explorer1 @ Oct 21 2015, 04:13 PM)...   Oct 21 2015, 04:35 PM
|- - HSchirmer   QUOTE (Mongo @ Oct 21 2015, 04:35 PM) But...   Oct 21 2015, 05:30 PM
- - Explorer1   And now a star getting 40% of its light blocked: h...   Oct 21 2015, 05:43 PM
- - silylene   My concept is that the rings are not edge-on to ea...   Oct 21 2015, 06:57 PM
|- - JRehling   QUOTE (silylene @ Oct 21 2015, 11:57 AM) ...   Oct 22 2015, 12:40 AM
|- - HSchirmer   QUOTE (JRehling @ Oct 22 2015, 12:40 AM) ...   Oct 23 2015, 12:33 PM
- - alan   The asymmetry of one of the transits reminds me of...   Oct 21 2015, 07:33 PM
- - AndyG   Huge, dense and opaque ring systems that are tilte...   Oct 22 2015, 08:37 AM
|- - JRehling   QUOTE (AndyG @ Oct 22 2015, 01:37 AM) Hug...   Oct 22 2015, 08:54 AM
- - Hungry4info   The relevant question is angular resolution, but t...   Oct 23 2015, 01:10 PM
- - Explorer1   I was browsing the extreme exoplanets list on Wiki...   Oct 31 2015, 02:17 AM
- - Hungry4info   No, it isn't right at all. The original paper ...   Oct 31 2015, 04:27 AM
- - Explorer1   Yes, just as I suspected. I did a quick search t t...   Oct 31 2015, 06:52 AM
|- - JRehling   There are probably some planets made largely/entir...   Nov 2 2015, 05:01 PM
|- - HSchirmer   QUOTE (JRehling @ Nov 2 2015, 05:01 PM) ....   Nov 3 2015, 03:44 AM
|- - JRehling   QUOTE (HSchirmer @ Nov 2 2015, 08:44 PM) ...   Nov 3 2015, 04:20 PM
|- - HSchirmer   QUOTE (JRehling @ Nov 3 2015, 04:20 PM) T...   Nov 3 2015, 04:59 PM
|- - JRehling   QUOTE (HSchirmer @ Nov 3 2015, 09:59 AM) ...   Nov 3 2015, 07:19 PM
- - Hungry4info   Besides, we know of numerous pulsar+WD binaries.   Nov 3 2015, 07:48 PM
- - nprev   JRehling is correct. Please stay on topic.   Nov 4 2015, 02:24 AM
- - ZLD   JPL posted a short article yesterday further sugge...   Nov 25 2015, 05:36 PM
- - Mongo   Paper is up on ARXIV now: KIC 8462852 - The Infra...   Nov 26 2015, 01:49 AM
- - Mongo   KIC 8462852 Faded at an Average Rate of 0.165+-0.0...   Jan 14 2016, 02:22 AM
|- - JRehling   I wonder if the reality is that the dimming occurr...   Jan 14 2016, 10:09 PM
- - nprev   Interesting. First thing this makes me think of is...   Jan 14 2016, 02:33 AM
|- - Mongo   QUOTE (nprev @ Jan 14 2016, 02:33 AM) Int...   Jan 14 2016, 02:54 AM
- - nprev   Hmm. Curiouser indeed. Almost seems like it has to...   Jan 14 2016, 03:00 AM
- - ZLD   Clearly just Starkiller Base finishing checkout te...   Jan 14 2016, 03:07 PM
- - Gerald   Black holes (besides hypothesized primordial ones)...   Jan 14 2016, 04:16 PM
- - Mongo   I noticed this statement from the Bradley E. Schae...   Jan 16 2016, 06:04 PM
- - Mongo   Okay, I've decided to download the full archiv...   Jan 16 2016, 06:39 PM
|- - JRehling   The use of archival data to study the brightness v...   Jan 25 2016, 05:50 PM
|- - HSchirmer   QUOTE (JRehling @ Jan 25 2016, 05:50 PM) ...   Jan 25 2016, 08:26 PM
|- - JRehling   QUOTE (HSchirmer @ Jan 25 2016, 01:26 PM)...   Jan 25 2016, 11:27 PM
|- - dudley   QUOTE (JRehling @ Jan 26 2016, 12:27 AM) ...   Jan 26 2016, 01:47 AM
|- - JRehling   QUOTE (dudley @ Jan 25 2016, 06:47 PM) So...   Jan 26 2016, 08:47 AM
- - Mongo   Attached is a diagram I made using 2-year bins. I ...   Jan 21 2016, 04:34 PM
- - dudley   KIC 8462852 is reportedly being watched for anothe...   Jan 23 2016, 05:29 PM
|- - HSchirmer   QUOTE (dudley @ Jan 23 2016, 06:29 PM) KI...   Jan 25 2016, 03:53 PM
- - nprev   In order to keep the Kepler topic open for other o...   Jan 25 2016, 11:02 AM
- - dudley   If I recall correctly, the Kepler Space telescope ...   Jan 25 2016, 10:04 PM
|- - JRehling   Kepler found no planets around this star, but that...   Jan 25 2016, 11:29 PM
|- - HSchirmer   QUOTE (dudley @ Jan 25 2016, 10:04 PM) If...   Jan 26 2016, 12:52 AM
|- - JRehling   QUOTE (HSchirmer @ Jan 25 2016, 05:52 PM)...   Jan 26 2016, 09:20 AM
|- - HSchirmer   QUOTE (JRehling @ Jan 26 2016, 10:20 AM) ...   Jan 26 2016, 02:56 PM
- - dudley   I wonder if trillions of comets, especially after ...   Jan 26 2016, 11:25 PM
|- - HSchirmer   QUOTE (dudley @ Jan 26 2016, 11:25 PM) I ...   Jan 27 2016, 12:21 AM
|- - JRehling   During the Kepler era, KIC 8462852's brightnes...   Jan 27 2016, 12:22 AM
|- - stevesliva   QUOTE (JRehling @ Jan 26 2016, 08:22 PM) ...   Jan 27 2016, 05:38 AM
|- - Gerald   QUOTE (stevesliva @ Jan 27 2016, 06:38 AM...   Jan 27 2016, 11:21 AM
- - dudley   I'm aware of two suggestions for how something...   Jan 27 2016, 04:32 PM
- - stevesliva   I have been thinking a lot about the geometry and ...   Jan 27 2016, 08:47 PM
|- - JRehling   stevesliva, I like your idea, although I don't...   Jan 28 2016, 08:08 PM
- - Hungry4info   Occam strikes again. Looks like the long-term dimm...   Jan 28 2016, 01:27 AM
- - Explorer1   So the modern dimming is just comets after all?   Jan 28 2016, 07:32 AM
- - silylene   I still think my earlier proposal (prior thread po...   Jan 28 2016, 02:44 PM
- - dudley   I'd like to see and consider Dr. Schaefer...   Jan 28 2016, 05:31 PM
- - Hungry4info   Response from Schaefer. Rather direct... http://ww...   Jan 28 2016, 10:11 PM
|- - JRehling   It seems like Schaefer has a definitively better g...   Jan 29 2016, 12:24 AM
- - Gerald   Since intrinsic causes are considered unikely, as ...   Jan 29 2016, 09:11 AM
|- - JRehling   A Reddit chat about this phenomenon raised, and su...   Jan 29 2016, 07:37 PM
|- - JRehling   I've found a statement of the problem with an ...   Jan 29 2016, 09:39 PM
- - dvandorn   A perfectly aligned stream of cometary bodies (or ...   Jan 30 2016, 01:38 AM
|- - JRehling   A problem with comets that are dark and far from a...   Jan 30 2016, 03:55 AM
- - Gerald   It cannot be anything likely, since otherwise we w...   Jan 30 2016, 03:17 AM
- - Gerald   The "it cannot be a young star due to the dis...   Jan 30 2016, 11:02 AM
- - dudley   The luminosity class of KIC 8462852 seems to be co...   Jan 30 2016, 05:21 PM
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