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KIC 8462852: Perbedaan antara revisi

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{{Starbox image
| image = [[Berkas:KIC 8462852 in IR and UV.png|300px250px]]
| caption = KIC 8462852 dalam inframerah dan ultraviolet
}}
{{Starbox observe
| epoch = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
| constell = [[Cygnus (konstelasi)|Cygnus]]
| ra = {{RA|20|06|15.457}}
| dec = {{DEC|+44|27|24.61}}
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{{Starbox character
| type = [[UrutanDeret utama]]<ref name="arXiv:1509.03622"/>
| class = [[Bintang urutanderet utama tipe F|F3V]]
| r-i = 0.305
| v-r = 0.349
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| p_error = 0.311
| parallax_footnote = <ref name="Hippke2016">{{cite arxiv |title=A first view with GAIA on KIC 8462852 - Distance estimates and a comparison to other F stars |eprint=1609.05492 |class=astro-ph |first1=Michael |last1=Hippke |first2=Daniel |last2=Angerhausen |date=18 September 2016}}</ref>
| dist_ly = {{val|1276.6|398.2|-245.3}}
| dist_pc = {{val|391.4|122.1|-75.2}}
| absmag_v = 3.08<ref name="arXiv:1509.03622"/><ref name="Bibcod:2013ApJS..208....9P"/><!--The 3.08 figure is quoted from Boyajian T. S et al 2015 despite the fact that a considerably dimmer value of 3.42 would be assumed if the Absolute Visual Magnitude was simply calculated from the apparent magnitude and distance. This is because the star lies more than 1000 light years away and so therefore a good percentage of its shortwave visible radiation has been scattered long before reaching Earth. So, the Absolute Visual Magnitude of 3.08 was calculated instead from a Bolometric Correction value taken from Pecaut & Mamajek 2013 -->
}}
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{{Starbox catalog
| names = {{nowrap|Tabby'sBintang StarTabby}}, {{nowrap|Boyajian'sBintang StarBoyajian}}, {{nowrap|WTFBintang StarWTF}}, {{nowrap|[[Katalog Tycho-2 Catalogue|TYC]] 3162-665-1}},<ref name="arXiv:1509.03622"/> {{nowrap|[[2MASS]] J20061546+4427248}},<ref name="arXiv:1509.03622"/> {{nobr|LGM-2}}<ref name="HuffPost-2016-08-25">{{cite news |url=http://www.huffingtonpost.com/entry/are-space-aliens-behind-the-most-mysterious-star-in-the-universe_us_57bb5537e4b00d9c3a1942f1 |title=Are Space Aliens Behind The ‘Most Mysterious Star In The Universe?’ |work=The Huffington Post |first=David |last=Freeman |date=25 August 2016 |accessdate=11 December 2016}}</ref>
}}
{{Starbox reference
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{{Starbox end}}
 
'''[[Kepler Input Catalog|KIC]] 8462852'''<ref name="arXiv:1509.03622" /> (juga '''Bintang Tabby''' atau '''Bintang WTF''') adalah [[bintang urutanderet utama tipe F]] yang terletak dalam [[konstelasi]] [[Cygnus (konstelasi)|Cygnus]] sekitar {{val|1276.6|398.2|-245.3|fmt=commas|u=[[tahun cahaya]]}} ({{val|391.4|122.1|-75.2|u=[[parsec|pc]]}}) dari [[Bumi]].<ref name="Hippke2016" /> Fluktuasi cahaya yang tidak biasa dari bintang ini ditemukan oleh [[sains warga|ilmuwan warga]] sebagai bagian dari proyek [[Perburuan Planet]], dan pada September 2015 para astronom dan ilmuwan warga bergabung dengan proyek tersebut mengumumkan [[pracetak]] dari makalah mengenai [[arXiv]] yang menjelaskan data dan interpretasi yang mungkin.<ref name="arXiv:1509.03622" />
 
Beberapa [[hipotesis]] telah dikemukakan untuk menjelaskan perubahan besar tidak teratur bintang dalam tingkat kecemerlangan yang diukur berdasarkan [[kurva cahaya]]nya yang tidak biasa, namun tidak ada yang sampai saat ini menjelaskan sepenuhnya semua aspek kurva. Hipotesis terkemuka, berdasarkan kurangnya cahaya inframerah yang teramati, berpendapat sekelompok fragmen komet yang dingin, berdebu dalam orbit yang sangat eksentrik.<ref name="NASA-20151124">{{cite web |url=http://www.nasa.gov/feature/jpl/strange-star-likely-swarmed-by-comets |title=Strange Star Likely Swarmed by Comets |publisher=[[NASA]] |last1=Clavin |first1=Whitney |last2=Johnson |first2=Michele |date=24 November 2015 |accessdate=24 November 2015}}</ref><ref name="independent20151125">{{cite news |url=http://www.independent.co.uk/news/science/star-that-could-have-alien-megastructure-around-it-is-almost-certainly-covered-by-a-swam-of-comets-a6748021.html |title=Star that could have ‘alien megastructure’ around it is almost certainly covered by a swarm of comets, Nasa says |work=[[The Independent]] |first=Andrew |last=Griffin |date=25 November 2015 |accessdate=26 November 2015}}</ref><ref name="ARX-20151127">{{cite arXiv |title=KIC 8462852: Transit of a Large Comet Family |eprint=1511.08821 |class=astro-ph.EP |last1=Bodman |first1=Eva H. L. |last2=Quillen |first2=Alice |date=27 November 2015}}</ref> Hipotesis yang lain adalah bahwa sejumlah besar dari massa kecil dalam "formasi ketat" sedang mengorbit bintang tersebut.<ref name="ATL-20151013" />
 
== Nomenklatur ==
Nama "Tabby's star" dan "Bintang Boyajian" mengacu kepada penulis utama studi awal ini, [[Tabetha S. Boyajian]];<ref name="popmech20160209">{{cite news |url=http://www.popularmechanics.com/space/telescopes/a19346/james-webb-telescope-alien-megastructure/ |title=NASA's Next Great Telescope Will Settle This Alien Megastructure Mystery For Good |work=Popular Mechanics |first=John |last=Wenz |date=9 February 2016 |accessdate=13 February 2016}}</ref><ref name="PSU-20160830">{{cite web |last=Wright |first=Jason T. |title=What Could Be Going on with Boyajian’s Star? Part I |url=http://sites.psu.edu/astrowright/2016/08/30/what-could-be-going-on-with-boyajians-star-part-i/ |date=30 August 2016 |work=[[Pennsylvania State University]] |accessdate=12 September 2016}}</ref> KIC 8462852 juga dikenal sebagai "Bintang WTF", mengikuti subjudul studi ''Where's The Flux?''<ref name="PSU-20151015" /><ref name="CNN-20151016">{{cite news |url=http://www.cnn.com/2015/10/15/world/extraterrestrial-intelligence-anomaly |title=Space anomaly gets extraterrestrial intelligence experts' attention |work=[[CNN News]] |last=Newsome |first=John |date=16 October 2015 |accessdate=16 October 2015}}</ref><ref name="FN-20151015">{{cite news |url=http://fox43.com/2015/10/15/discovery-of-a-strange-star-could-mean-alien-life |title=Discovery of a strange star could mean alien life |work=[[Fox News]] |date=15 October 2015 |accessdate=16 October 2015}}</ref><ref name="UT-20151016">{{cite news |url=http://www.universetoday.com/122865/whats-orbiting-kic-8462852-shattered-comet-or-alien-megastructure/ |title=What's Orbiting KIC 8462852 – Shattered Comet or Alien Megastructure? |work=[[Universe Today]] |last=King |first=Bob |date=16 October 2015 |accessdate=16 October 2015}}</ref> ("Di mana [[Fluks radiatif|Fluksnya]]") (sebuah lelucon yang mengacu pada ekspresi bahasa percakapan mengenai kesangsian [[wikt:WTF|"WTF"]]).<ref>{{cite news |url=http://www.smh.com.au/technology/sci-tech/astronomy/its-either-aliens-or-a-swarm-of-comets-scientists-baffled-by-wtf-001-our-galaxys-strangest-star-20151014-gk9iwj.html |title=It's either aliens or a swarm of comets: scientists baffled by WTF 001, our galaxy's strangest star |work=The Sydney Morning Herald |first=Marcus |last=Strom |date=15 October 2015 |accessdate=16 October 2015}}</ref>
 
== Lokasi cakrawala ==
[[Berkas:NGC 6866 map.png|jmpl|kiri|Peta yang menunjukkan lokasi NGC 6866. KIC 8462852 berada di timur laut antara NGC 6866 dan ο¹ Cygni.]]
KIC 8462852 dalam konstelasi [[Cygnus]] terletak kira-kira di tengah antara cakrawala utama yang tampak (terlihat dengan mata telanjang) bintang-bintang terang [[Deneb]] (α Cyg, α Cygni, Alpha Cygni) dan [[Delta Cygni]] (δ Cyg, δ Cygni) sebagai bagian dari [[Persilangan Utara (asterisme)|Persilangan Utara]].<ref>{{cite web |url=https://archive.stsci.edu/kepler/kic10/search.php?kic_kepler_id=8462852&action=Search |title=KIC10 Search Results |publisher=Space Telescope Science Institute |accessdate=16 October 2015}}</ref><ref name="STPSA">{{Cite book |title=Sky & Telescope's Pocket Sky Atlas |publisher=Sky Publishing |location=Cambridge, Massachusetts |first=Roger W. |last=Sinnott |edition=3rd |date=2010 |isbn=978-1-931559-31-7}}</ref> KIC 8462852 terletak di selatan dari [[31 Cygni|Omicron¹ Cygni]] (ο¹ Cygni, 31 Cygni), dan timur laut dari [[gugus bintang]] [[NGC 6866]].<ref name=STPSA/> Meskipun hanya beberapa menit busur jauhnya dari gugusan tersebut, hal ini tidak berhubungan dan ia lebih dekat ke Matahari daripadanya ke gugus bintang.
 
== Referensi ==
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<ref name="Marengo2015">{{cite journal |title=KIC 8462852: The Infrared Flux |journal=The Astrophysical Journal Letters |first1=Massimo |last1=Marengo |first2=Alan |last2=Hulsebus |first3=Sarah |last3=Willis |volume=814 |issue=1 |at=L15 |date=November 2015 |doi=10.1088/2041-8205/814/1/L15 |arxiv=1511.07908 |bibcode=2015ApJ...814L..15M}}</ref>
 
<ref name="ATL-20151013">{{cite news |url=https://www.theatlantic.com/science/archive/2015/10/the-most-interesting-star-in-our-galaxy/410023/ |title=The Most Mysterious Star in Our Galaxy |work=[[The Atlantic]] |last=Andersen |first=Ross |date=13 October 2015 |accessdate=13 October 2015}}</ref>
 
<ref name="PSU-20151015">{{cite web |url=http://sites.psu.edu/astrowright/2015/10/15/kic-8462852wheres-the-flux/ |title=KIC 8462852: Where's the Flux? |work=AstroWright |publisher=[[Pennsylvania State University]] |last=Wright |first=Jason |date=15 October 2015 |accessdate=16 October 2015}}</ref>
 
}}
 
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* {{YouTube|id=gypAjPp6eps|title="The Most Mysterious Star in the Universe"}}, a [[TED Talk]] by Tabetha Boyajian
{{Sky|20|06|15.457|+|44|27|24.61|1500}}
{{Authority control}}
 
[[KategoryKategori:Cygnus (konstelasi)]]
[[Kategori:Bintang deret utama tipe F]]
 
[[Kategori:BintangObjek urutanastronomis utama tipe Fhipotetis]]
[[Kategori:Objek astonomis hipotetis]]
[[Kategori:Kepler Objects of Interest]]
[[Kategori:Pencarian kecerdasan ektraterestrial]]
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[[Kategori:2015 dalam sains]]
[[Kategori:Masalah belum terpecahkan dalam astronomi]]
[[Kategori:Objek astronomi yang ditemukan tahun 2011]]
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