Pavo: Perbedaan antara revisi

Konten dihapus Konten ditambahkan
Perbaikan pranala
Perbaikan pranala
Baris 21:
| meteorshowers =
[[:en:Delta Pavonids|Delta Pavonids]]
| bordering = [[Octans]]{{br}}[[Apus]]{{br}}[[:en:Triangulum Australe|Triangulum Australe]]{{br}}[[:en:Ara (rasi bintang)|Ara]]{{br}}[[:en:Telescopium|Telescopium]]{{br}}[[Indus (rasi bintang)|Indus]]
| latmax = 15
| latmin = 90
Baris 60:
 
=== Bintang-bintang ===
<!--{{see also|Daftar bintang dalam Pavo}}-->
[[Image:Constellation Pavo.jpg|thumb|left|256px|Rasi bintang Pavo yang terlihat oleh mata telanjang]]
Meskipun menggambarkan Pavo pada petanya, Bayer tidak memberi penomoran bintang-bintangnya menurut [[:en:Bayer designation|designasi Bayer]]. Penjelajah dan astronom Perancis [[Nicolas Louis de Lacaille]] memberi label pada bintang-bintang itu "Alpha" sampai "Omega" pada tahun 1756, tetapi tidak menyebut "Psi" dan "Xi", serta memberi label dua pasang bintang yang terletak berdekatan Mu dan Phi Pavonis. Pada tahun 1879, astronom Amerika [[:En:Benjamin Apthorp Gould|Benjamin Gould]] memberi label bintang Xi Pavonis karena ia merasa tingkat kecerahannya mengizinkan penamaan, tetapi menggugurkan penamaan Chi Pavonis karena pudar.<ref name="wagman">{{cite book | last = Wagman | first = Morton | date = 2003 | title = Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others | publisher = The McDonald & Woodward Publishing Company | location = Blacksburg, [[Virginia|VA]] | isbn = 978-0-939923-78-6 |pages=231–32}}</ref><!-- referensi untuk tiga kalimat sebelumnya-->
Baris 70:
Lying a few degrees west of Beta is [[Delta Pavonis]], a nearby Sun-like but more [[stellar evolution|evolved]] star;<ref name="motz" /> this is a yellow subgiant of spectral type G8IV and apparent magnitude 3.56 that is only 19.9 light years distant from Earth.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-id?Ident=delta+pav&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title = Delta Pavonis – Variable Star |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 23 August 2013}}</ref> East of Beta and at the constellation's eastern border with Indus is [[Gamma Pavonis]], a fainter, [[solar-type star]] 30 light years from Earth with a magnitude of 4.22 and stellar class F9V.<ref>{{cite journal | last1=Mosser, B. | last2=Deheuvels | first2=S. | last3=Michel | first3=E. | last4=Thévenin | first4=F. | last5=Dupret | first5=M.A. | last6=Samadi | first6=R. | last7=Barban | first7=C. | last8=Goupil | first8=M.J. | title=HD 203608, a Quiet Asteroseismic Target in the Old Galactic Disk | journal=Astronomy and Astrophysics | volume=488 | issue=2 | pages=635–42 | doi=10.1051/0004-6361:200810011 | bibcode = 2008A&A...488..635M | arxiv=0804.3119 }}</ref> Other nearby stars in Pavo are much fainter: [[SCR 1845-6357]] is a binary system with an apparent magnitude of 17.4 consisting of a [[red dwarf]] and [[brown dwarf]] companion lying around 12.6 light years distant, while [[Gliese 693]] is a red dwarf of magnitude 10.78 lying 19 light years away.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-id?submit=display&bibdisplay=refsum&bibyear1=1850&bibyear2=%24currentYear&Ident=%403464606&Name=GJ+++693#lab_bib |title = GJ 693 – Variable Star |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 24 August 2013}}</ref>
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Pavo memuat beberapa bintang variable terkenal. [[Lambda Pavonis]] merupakan sebuah bintang [[:en:irregular variable|''irregular variable'']] yang berkisar antara magnitude 3,4 dan 4,4; variasi ini dapat dilihat dengan mata telanjang. Digolongkan sebagai kelas Gamma Cassiopeiae variable atau [[:en:shell star|''shell star'']],<ref name="inglis">{{cite book |last=Inglis |first=Mike |title=Astronomy of the Milky Way: Observer's Guide to the Southern Sky |publisher=Springer |location=New York, New York |date=2004 |pages=153–54 |isbn=978-1-85233-742-1|url=http://books.google.com/?id=1r0qvMjSCGAC&pg=SA3-PA31&dq=Circinus+inglis#v=onepage&q&f=false}}</ref> termasuk tipe spektral B2II-IIIe dan terletak sekitar 1430 tahun cahaya jauhnya dari Bumi.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-id?Ident=lambda+pavonis&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title = Lambda Pavonis – Be Star |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 24 August 2013}}</ref>
 
Pavo memuat beberapa bintang variable terkenal. [[:en:Lambda Pavonis|Lambda Pavonis]] merupakan sebuah bintang [[:en:irregular variable|''irregular variable'']] yang berkisar antara magnitude 3,4 dan 4,4; variasi ini dapat dilihat dengan mata telanjang. Digolongkan sebagai kelas Gamma Cassiopeiae variable atau [[:en:shell star|''shell star'']],<ref name="inglis">{{cite book |last=Inglis |first=Mike |title=Astronomy of the Milky Way: Observer's Guide to the Southern Sky |publisher=Springer |location=New York, New York |date=2004 |pages=153–54 |isbn=978-1-85233-742-1|url=http://books.google.com/?id=1r0qvMjSCGAC&pg=SA3-PA31&dq=Circinus+inglis#v=onepage&q&f=false}}</ref> termasuk tipe spektral B2II-IIIe dan terletak sekitar 1430 tahun cahaya jauhnya dari Bumi.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-id?Ident=lambda+pavonis&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title = Lambda Pavonis – Be Star |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 24 August 2013}}</ref>

[[:en:Kappa Pavonis|Kappa Pavonis]] merupakan suatu bintang [[:en:W Virginis variable|''W Virginis variable'']] subclasssubkelas [[:en:Type II Cepheid|Tipe II Cepheid]].<ref name="inglis" /><!-- It ranges from magnitude 3.91 to 4.78 over 9 days and is a yellow-white [[supergiant]] pulsating between spectral classes F5I-II and G5I-II.<ref>{{cite web |url = http://www.aavso.org/vsx/index.php?view=detail.top&oid=25119 |title = Kappa Pavonis |publisher = AAVSO |work = International Variable Star Index |date = 7 January 2011 |accessdate = 24 August 2013}}</ref> [[NU Pavonis|NU]] and [[V Pavonis]] are pulsating [[Semiregular variable star|semiregular variable]] [[red giant]] stars. NU has a spectral type M6III and ranges from magnitude 4.9 to 5.3,<ref>{{cite web |url = http://www.aavso.org/vsx/index.php?view=detail.top&oid=25016 |title = NU Pavonis |publisher = AAVSO |work = International Variable Star Index |date = 7 January 2011 |accessdate = 24 August 2013}}</ref> while V Pavonis ranges from magnitude 6.3 to 8.2 over two periods of 225.4 and 3735 days concurrently.<ref name="inglis" /> V is a [[carbon star]]<ref name="gray_corbally" group="note">C6 is equivalent to a class M2–M3 star, the 4 shows the strength of the [[Swan bands]] on a scale of 1 (weak) to 5 (strong), and the Nb indicates bands of the chemical element [[niobium]]. See:<br>{{cite book | author=Gray, Richard O.; Corbally, Christopher J. | title=Stellar Spectral Classification | date=2009 | publisher=Princeton University Press |location=Princeton, New Jersey | page=309 | isbn=978-0-691-12511-4 }}</ref> of spectral type C6,4(Nb)<ref>{{cite web |url = http://www.aavso.org/vsx/index.php?view=detail.top&oid=24725 |title = V Pavonis |publisher = AAVSO |work = International Variable Star Index |date = 7 January 2011 |accessdate = 24 August 2013}}</ref> with a prominent red hue.<ref name="inglis" />
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[[:en:Eta Pavonis|Eta]] dan [[:en:Xi Pavonis|Xi Pavonis]] terletak di bagian barat rasi bintang dan menggambarkan ekor burung merak.<ref name="streicher">{{cite web | last = Streicher | first = Magda | date = October 2010 | title = Pavo—A Fanciful Bird | publisher = The Astronomical Society of Southern Africa | work = Deepsky Delights | url =http://assa.saao.ac.za/sections/deepsky/delights/2010_oct_deepsky_delights.pdf | accessdate = 26 August 2013 }}</ref><!-- At apparent magnitude 3.6, Eta is a luminous orange giant of spectral type K2II some 350 light years distant from Earth.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Eta+Pavonis&submit=SIMBAD+search |title = Eta Pavonis |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 26 August 2013}}</ref> Xi Pavonis is a multiple star system visible in small telescopes as a brighter orange star and fainter white companion.<ref name="inglis" /> Located around 470 light years from Earth, the system has a magnitude of 4.38.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Xi+Pavonis&submit=SIMBAD+search |title = Xi Pavonis |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 25 August 2013}}</ref> [[AR Pavonis]] is a faint but well-studied [[Binary star#Eclipsing binaries|eclipsing binary]] composed of a red giant and smaller hotter star some 18000 light years from Earth. It has some features of a [[cataclysmic variable]], the smaller component most likely having an [[accretion disc]].<ref>{{cite journal|author=Skopal, A.; Djurašević, G.; Jones, A.; Drechsel, H.; Rovithis-Livaniou, H.; Rovithis, P|date=2000|title=A Photometric Study of the Eclipsing Symbiotic Binary AR Pavonis|journal=[[Monthly Notices of the Royal Astronomical Society]]|volume=311|issue=2|pages=225–33|url=http://mnras.oxfordjournals.org/content/311/2/225.full.pdf|doi=10.1046/j.1365-8711.2000.03040.x|bibcode = 2000MNRAS.311..225S }}</ref> The visual magnitude ranges from 7.4 to 13.6 over 605 days.<ref>{{cite web |url = http://www.aavso.org/vsx/index.php?view=detail.top&oid=24791 |title = AR Pavonis |publisher = AAVSO |work = International Variable Star Index |date = 4 January 2010 |accessdate = 25 August 2013}}</ref>
 
===Planetary systems and debris disks===
Baris 80 ⟶ 82:
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=== Benda-benda angkasa dalam ===
[[File:Star cluster NGC 6752.jpg|thumb|right|[[Gugus bola]] (''Globularglobular cluster'') NGC 6752 diperkirakan terdiri dari sekitar 100.000 bintang.]]
"Obyek angkasa dalam" ([[:en:deep-sky object|''deep-sky object'']]) dalam Pavo meliputi [[:en:NGC 6752|NGC 6752]], [[:en:globulargugus clusterbola|gugus bola (''globular cluster'')]] paling terang ketiga di langit, setelah [[:en:47 Tucanae|47 Tucanae]] dan [[:en:Omega Centauri|Omega Centauri]]. Diperkirakan berdiameter 100 [[tahun cahaya]] dan terdiri dari 100.000 bintang.<ref name="APODNASA">{{cite web|url=http://apod.nasa.gov/apod/ap130705.html|title=Globular Star Cluster NGC 6752 |last=Nemiroff, Robert; Bonnell, Jerry|date=5 July 2013|work=Astronomy Picture of the Day|publisher=NASA|accessdate=23 August 2013}}</ref><!-- cites previous two sentences --> Di sebelah selatannya, sekitar tiga derajat, terletak [[:en:NGC 6744|NGC 6744]],<ref name="motz" /> suatu [[:en:spiral galaxy|galaksi spiral]] yang jauhnya sekitar 30 juta tahun cahaya dari bumi dan mirip dengan [[Galaksi Bima Sakti]], tetapi diameternya dua kali lebih besar.<ref>{{cite web|url=http://www.eso.org/public/news/eso1118/|title=A Postcard from Extragalactic Space? A spiral galaxy that resembles our Milky Way|last=Hook|first=Richard |date=1 June 2011|work=European Southern Observatory|publisher=ESO Images and Downloads|accessdate=23 August 2013}}</ref> [[:en:Type Ib and Ic supernovae|Supernova tipe 1c]] ditemukan dalam galaksi ini pada tahun 2005;<ref name="mobberley">{{cite book |title=The Caldwell Objects And How to Observe Them |first=Martin |last=Mobberley |authorlink=Martin Mobberley |pages=208–09|url=http://books.google.com.au/books?id=amPrWoOWgHcC&pg=PA208&dq=supernova+pavo&hl=en&sa=X&ei=onEZUpTLIYnoiAf72IHwDQ&ved=0CEoQ6AEwBQ#v=onepage&q=supernova%20pavo&f=false|publisher=Springer |location=New York, New York |date=1999 |isbn=978-1-4419-0326-6}}</ref> dikenal sebagai "SN2005at", memuncak pada magnitude 16,8.<ref>{{cite web|url=http://www.rochesterastronomy.org/sn2005/|title=Bright Supernovae - 2005|last=Bishop|first=David|date=10 September 2013|work=Astronomy Section|publisher=Rochester Academy of Science|accessdate=22 September 2013|location=Rush, New York}}</ref> Galaksi kerdil [[:en:IC 4662|IC 4662]] terletak 10 [[:en:Minute of arc|arcminute]] sebelah timur laut Eta Pavonis,<ref name="inglis" /> dengan magnitude 11,62.<ref>{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IC+4662 |title =IC 4662 – Blue compact Galaxy |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 24 August 2013}}</ref> Terletak hanya 8 juta tahun cahaya jauhnya, galaksi ini mempunyai beberapa region [[:en:Starburst region|pembentukan bintang yang tinggi]].<ref>{{cite web|url=http://www.spacetelescope.org/images/opo0919d/|title=Hubble ACS image of IC 4662|last=McQuinn|first=K. |date=30 April 2009|work=Hubble website|publisher=European Space Agency (ESA) |accessdate=24 August 2013}}</ref> Suatu galaksi dengan magnitude ke-14[[:en:IC 4965|IC 4965]] terletak 1,7 derajat di sebelah barat Alpha Pavonis, dan merupakan anggota sentral [[:en:Shapley Supercluster|Supercluster Shapley]].<ref name="streicher" />
 
=== Hujan meteor ===