Pusat Galaksi: Perbedaan antara revisi
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[[Berkas:Galactic Cntr full cropped.jpg|jmpl|300px|ka|Pusat Galasi terlihat oleh salah satu teleskop infra merah 2MASS.]] |
[[Berkas:Galactic Cntr full cropped.jpg|jmpl|300px|ka|Pusat Galasi terlihat oleh salah satu teleskop infra merah 2MASS.]] |
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'''Pusat Galaksi''' adalah titik rotasi dari sebuah galaksi, contohnya adalah galaksi [[Bima Sakti]],yang terletak sekitar 8.33±0.35 kiloparsek (~27.000±1000 tahun cahaya) dari [[Bumi]] <ref name="distance1">{{cite journal|last = Reid|first = Mark J.|title=The distance to the center of the Galaxy|journal=Annual review of astronomy and astrophysics|year=1993|volume=31|issue = 1| pages=345–372|bibcode=1993ARA&A..31..345R|accessdate=2007-05-10|doi= 10.1146/annurev.aa.31.090193.002021}}</ref><ref name="distance2">{{cite journal|author=Eisenhauer, F.; Schödel, R.; Genzel, R.; Ott, T.; Tecza, M.; Abuter, R.; Eckart, A.; Alexander, T.|title=A Geometric Determination of the Distance to the Galactic Center| journal=The Astrophysical Journal|year=2003|volume=597|issue=2|pages=L121–L124|bibcode=2003ApJ...597L.121E | arxiv=astro-ph/0306220|doi=10.1086/380188}}</ref><ref name="distance3">{{cite journal|author=Horrobin, M.; Eisenhauer, F.; Tecza, M.; Thatte, N.; Genzel, R.; Abuter, R.; Iserlohe, C.; Schreiber, J.; Schegerer, A.; Lutz, D.; Ott, T.; Schödel, R.|title=First results from SPIFFI. I: The Galactic Center|journal=Astronomische Nachrichten|year=2004|volume=325|issue=2|pages=120–123|url= |
'''Pusat Galaksi''' adalah titik rotasi dari sebuah galaksi, contohnya adalah galaksi [[Bima Sakti]],yang terletak sekitar 8.33±0.35 kiloparsek (~27.000±1000 tahun cahaya) dari [[Bumi]] <ref name="distance1">{{cite journal|last = Reid|first = Mark J.|title=The distance to the center of the Galaxy|journal=Annual review of astronomy and astrophysics|year=1993|volume=31|issue = 1| pages=345–372|bibcode=1993ARA&A..31..345R|accessdate=2007-05-10|doi= 10.1146/annurev.aa.31.090193.002021}}</ref><ref name="distance2">{{cite journal|author=Eisenhauer, F.; Schödel, R.; Genzel, R.; Ott, T.; Tecza, M.; Abuter, R.; Eckart, A.; Alexander, T.|title=A Geometric Determination of the Distance to the Galactic Center| journal=The Astrophysical Journal|year=2003|volume=597|issue=2|pages=L121–L124|bibcode=2003ApJ...597L.121E | arxiv=astro-ph/0306220|doi=10.1086/380188}}</ref><ref name="distance3">{{cite journal|author=Horrobin, M.; Eisenhauer, F.; Tecza, M.; Thatte, N.; Genzel, R.; Abuter, R.; Iserlohe, C.; Schreiber, J.; Schegerer, A.; Lutz, D.; Ott, T.; Schödel, R.|title=First results from SPIFFI. I: The Galactic Center|journal=Astronomische Nachrichten|year=2004|volume=325|issue=2|pages=120–123|url=http://www.mpe.mpg.de/SPIFFI/preprints/first_result_an1.pdf|format=PDF|accessdate=2007-05-10|doi=10.1002/asna.200310181|bibcode=2004AN....325...88H|archive-date=2007-06-21|archive-url=https://web.archive.org/web/20070621072120/http://www.mpe.mpg.de/SPIFFI/preprints/first_result_an1.pdf|dead-url=yes}}</ref><ref name=majaess2009>Majaess D. J., Turner D. G., Lane D. J. (2009). [http://adsabs.harvard.edu/abs/2009arXiv0903.4206M ''Characteristics of the Galaxy according to Cepheids''], MNRAS</ref><ref name=gillessenetal2009>{{cite journal|last=Gillessen| first = S.|coauthors=Eisenhauer; Trippe; Alexander; Genzel; Martins; Ott|title=Monitoring Stellar Orbits Around the Massive Black Hole in the Galactic Center|journal=The Astrophysical Journal|volume=692|issue=2|pages=1075–1109|year=2009|doi=10.1088/0004-637X/692/2/1075|accessdate=2010-10-28|bibcode=2009ApJ...692.1075G|arxiv=0810.4674}}</ref> diarah rasi [[Sagitarius]], Ophiuchus dan [[Scorpius]] di mana Galaksi Bima Sakti terlihat lebih cemerlang. Pada pusat ini ditemukan [[Black hole|Lubang Hitam]] supermasif bernama [[Sagittarius A*]] |
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== Lokasi dan Bukti == |
== Lokasi dan Bukti == |
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== Daftar Pustaka == |
== Daftar Pustaka == |
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* {{cite book|title=The Black Hole at the Center of the Milky Way|last=Eckart|first=A.|authorlink=|coauthors=Schödel, R.; Straubmeier, C.|year=2005|publisher=Imperial College Press|location=London|isbn=1860945678|pages=|url= |
* {{cite book|title=The Black Hole at the Center of the Milky Way|last=Eckart|first=A.|authorlink=|coauthors=Schödel, R.; Straubmeier, C.|year=2005|publisher=Imperial College Press|location=London|isbn=1860945678|pages=|url=https://archive.org/details/blackholeatcente0000ecka}} |
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* {{cite book|title=The Black Hole in the Center of Our Galaxy|last=Melia|first=Fulvio|authorlink=Fulvio Melia|coauthors=|year=2003|publisher=Princeton University Press|location=Princeton|isbn=0691095051|pages=|url=https://archive.org/details/blackholeatcente0000meli}} |
* {{cite book|title=The Black Hole in the Center of Our Galaxy|last=Melia|first=Fulvio|authorlink=Fulvio Melia|coauthors=|year=2003|publisher=Princeton University Press|location=Princeton|isbn=0691095051|pages=|url=https://archive.org/details/blackholeatcente0000meli}} |
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* {{cite book|title=The Galactic Supermassive Black Hole|last=Melia|first=Fulvio|authorlink=|coauthors=|year=2007|publisher=Princeton University Press|location=Princeton|isbn=9780691131290|pages=|url= |
* {{cite book|title=The Galactic Supermassive Black Hole|last=Melia|first=Fulvio|authorlink=|coauthors=|year=2007|publisher=Princeton University Press|location=Princeton|isbn=9780691131290|pages=|url=https://archive.org/details/galacticsupermas0000meli}} |
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== Pranala luar == |
== Pranala luar == |
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* [http://www.astro.ucla.edu/~ghezgroup/gc/ UCLA Galactic Center Group] |
* [http://www.astro.ucla.edu/~ghezgroup/gc/ UCLA Galactic Center Group] {{Webarchive|url=https://web.archive.org/web/20180104110830/http://www.astro.ucla.edu/~ghezgroup/gc/ |date=2018-01-04 }} |
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* [http://www.mpe.mpg.de/ir/GC/ Max Planck Institute for Extraterrestrial Physics Galactic Center Group] |
* [http://www.mpe.mpg.de/ir/GC/ Max Planck Institute for Extraterrestrial Physics Galactic Center Group] |
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* [http://press.princeton.edu/titles/8453.html The Galactic Supermassive Black Hole] |
* [http://press.princeton.edu/titles/8453.html The Galactic Supermassive Black Hole] |
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Revisi terkini sejak 11 Desember 2023 06.51
Pusat Galaksi adalah titik rotasi dari sebuah galaksi, contohnya adalah galaksi Bima Sakti,yang terletak sekitar 8.33±0.35 kiloparsek (~27.000±1000 tahun cahaya) dari Bumi [1][2][3][4][5] diarah rasi Sagitarius, Ophiuchus dan Scorpius di mana Galaksi Bima Sakti terlihat lebih cemerlang. Pada pusat ini ditemukan Lubang Hitam supermasif bernama Sagittarius A*
Lokasi dan Bukti[sunting | sunting sumber]
Karena debu antar bintang yang menutupi jarak pandang, pusat galaksi tidak bisa dipelajari lewat spektrum warna, sinar ultra ungu, maupun sinar X. Informasi yang bisa didapat tentang pusat galaksi hanya melalui observasi pada sinar gama, Sinar X keras (hard X-ray), inframerah,Astronomi submilimeter dan Gelombangradio. Koordinat pusat galaksi pertama kalinya ditemukan oleh Harlow Shapley pada tahun 1918 di dalam tulisannya mengenai distribusi 'globular cluster'. Di dalam persamaan sistem ekuator angka ini adalah: RA 17h45m40.04s, Dec -29° 00' 28.1" (J2000 epoch).
Referensi[sunting | sunting sumber]
- ^ Reid, Mark J. (1993). "The distance to the center of the Galaxy". Annual review of astronomy and astrophysics. 31 (1): 345–372. Bibcode:1993ARA&A..31..345R. doi:10.1146/annurev.aa.31.090193.002021.
- ^ Eisenhauer, F.; Schödel, R.; Genzel, R.; Ott, T.; Tecza, M.; Abuter, R.; Eckart, A.; Alexander, T. (2003). "A Geometric Determination of the Distance to the Galactic Center". The Astrophysical Journal. 597 (2): L121–L124. arXiv:astro-ph/0306220
. Bibcode:2003ApJ...597L.121E. doi:10.1086/380188.
- ^ Horrobin, M.; Eisenhauer, F.; Tecza, M.; Thatte, N.; Genzel, R.; Abuter, R.; Iserlohe, C.; Schreiber, J.; Schegerer, A.; Lutz, D.; Ott, T.; Schödel, R. (2004). "First results from SPIFFI. I: The Galactic Center" (PDF). Astronomische Nachrichten. 325 (2): 120–123. Bibcode:2004AN....325...88H. doi:10.1002/asna.200310181. Diarsipkan dari versi asli (PDF) tanggal 2007-06-21. Diakses tanggal 2007-05-10.
- ^ Majaess D. J., Turner D. G., Lane D. J. (2009). Characteristics of the Galaxy according to Cepheids, MNRAS
- ^ Gillessen, S. (2009). "Monitoring Stellar Orbits Around the Massive Black Hole in the Galactic Center". The Astrophysical Journal. 692 (2): 1075–1109. arXiv:0810.4674 . Bibcode:2009ApJ...692.1075G. doi:10.1088/0004-637X/692/2/1075.
Daftar Pustaka[sunting | sunting sumber]
- Eckart, A. (2005). The Black Hole at the Center of the Milky Way. London: Imperial College Press. ISBN 1860945678.
- Melia, Fulvio (2003). The Black Hole in the Center of Our Galaxy. Princeton: Princeton University Press. ISBN 0691095051.
- Melia, Fulvio (2007). The Galactic Supermassive Black Hole. Princeton: Princeton University Press. ISBN 9780691131290.
Pranala luar[sunting | sunting sumber]
- UCLA Galactic Center Group Diarsipkan 2018-01-04 di Wayback Machine.
- Max Planck Institute for Extraterrestrial Physics Galactic Center Group
- The Galactic Supermassive Black Hole
- The Black Hole at the Center of the Milky Way Diarsipkan 2007-07-06 di Wayback Machine.
- The dark heart of the Milky Way Diarsipkan 2007-10-31 di Wayback Machine.
- Dramatic Increase in Supernova Explosions Looms
- APOD:
- A simulation of the stars orbiting the Milky Way's central massive black hole
- Galactic Center on arxiv.org
| Lokasi | Bima Sakti → Subgrup Bima Sakti → Grup Lokal → Lembaran Lokal → Supergugus Virgo → Supergugus Laniakea → Alam semesta teramati → Alam semesta Setiap panah (→) bisa berarti "di dalam" atau "bagian dari". |  | |||||||
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| Inti galaksi | |||||||||
| Lengan spiral | |||||||||
| Galaksi satelit |
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