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Bintang Kemarau

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Bintang Kemarau
The Galactic Center as seen from Earth's night sky (featuring the telescope's laser guide star). Listed below is Galactic Center's information.
Observation data (J2000 epoch)
BeranatungSagittarius
Right ascensionTemplat:RA[1]
DeclinationTemplat:DEC[1]
Distance7.935–8.277 kpc (25,881–26,996 ly)[2][3][4][lower-alpha 1]
Characteristics
TypeSb; Sbc; SB(rs)bc[5][6]
Pampi1.15×1012[7][8][9] Templat:Solar mass
Penyampau bintang100–400 billion ((1–4)×1011)[12][13]
Pemesai26.8 ± 1.1 kpc
(87,400 ± 3,600 ly)
(diameter; D25 isophote)[10][lower-alpha 2]
Half-light radius (physical)5.75±0.38 kpc[14]
H I scale length (physical)70 kpc
(228,000 ly)[15]
Thickness of thin disk220–450 pc (718–1,470 ly)[16]
Thickness of thick disk2.6 ± 0.5 kpc (8,500 ± 1,600 ly)[16]
Angular momentum~1×1067 J s[17]
Sun's Galactic rotation period212 Myr[18]
Spiral pattern rotation period220–360 Myr[19]
Bar pattern rotation period160–180 Myr[20]
Speed relative to CMB rest frame552.2±5.5 km/s[21]
Escape velocity at Sun's position550 km/s[22]
Dark matter density at Sun's position0.0088+0.0024
−0.0018 Templat:Solar masspc−3 (0.35+0.08
−0.07 GeV cm−3)[22]

Bintang Kemarau nya galaksi ti nyengkaum Sistem Solar, enggau nama nya nerangka ayan galaksi tu ari Bumi: siti jalur penampak ti kabur ti dipeda ba langit malam ti ditempa ari bintang ba lengan galaksi bukai, ti jauh amat nyentukka sida enda ulih dibida individu ngena mata kasar.

Nota

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  1. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama distance
  2. ↑ This is the diameter measured using the D25 standard. It has been recently suggested that there is a presence of disk stars beyond this diameter, although it is not clear how much of this influences the surface brightness profile.[11]

Kereban sanding

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  1. ↑ 1.0 1.1 Petrov, L.; Kovalev, Y. Y.; Fomalont, E. B.; Gordon, D. (2011). "The Very Long Baseline Array Galactic Plane Survey—VGaPS". The Astronomical Journal. 142 (2): 35. arXiv:1101.1460. Bibcode:2011AJ....142...35P. doi:10.1088/0004-6256/142/2/35. ISSN 0004-6256. S2CID 121762178.
  2. ↑ Event Horizon Telescope Collaboration; et al. (2022). "First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric". The Astrophysical Journal. 930 (2): L17. arXiv:2311.09484. Bibcode:2022ApJ...930L..17E. doi:10.3847/2041-8213/ac6756. S2CID 248744741.
  3. ↑ Templat:Cite arXiv
  4. ↑ Abuter, R.; et al. (2019). "A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty". Astronomy & Astrophysics. 625: L10. arXiv:1904.05721. Bibcode:2019A&A...625L..10G. doi:10.1051/0004-6361/201935656. S2CID 119190574.
  5. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama ssr100_1_129
  6. ↑ Frommert, Hartmut; Kronberg, Christine (August 26, 2005). "Classification of the Milky Way Galaxy". SEDS. Archived from the original on May 31, 2015. Retrieved May 30, 2015.
  7. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama SA-20190308
  8. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama ARX-20190208
  9. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama Kafle2012
  10. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama Goodwin
  11. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama Lopez2018
  12. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama frommert_kronberg2005
  13. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama wethington2010
  14. ↑ Lian, Jianhui; Zasowski, Gail; Chen, Bingqiu; Imig, Julie; Wang, Tao; Boardman, Nicholas; Liu, Xiaowei (June 28, 2024), The size of the Milky Way galaxy, arXiv:2406.05604
  15. ↑ Kalberla, Peter M.W.; Kerp, Jürgen (2009-09-01). "The HI Distribution of the Milky Way". Annual Review of Astronomy and Astrophysics. 47 (1): 27–61. Bibcode:2009ARA&A..47...27K. doi:10.1146/annurev-astro-082708-101823. ISSN 0066-4146. Retrieved 2025-10-23.
  16. ↑ 16.0 16.1 Bland-Hawthorn, Joss; Gerhard, Ortwin (2016). "The Galaxy in Context: Structural, Kinematic, and Integrated Properties". Annual Review of Astronomy and Astrophysics. 54: 529–596. arXiv:1602.07702. Bibcode:2016ARA&A..54..529B. doi:10.1146/annurev-astro-081915-023441. S2CID 53649594.
  17. ↑ Karachentsev, Igor. "Double Galaxies § 7.1". ned.ipac.caltech.edu. Izdatel'stvo Nauka. Archived from the original on March 4, 2016. Retrieved April 5, 2015.
  18. ↑ "A New Map of the Milky Way". Scientific American. April 1, 2020. Archived from the original on April 27, 2021. Retrieved August 10, 2022.
  19. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama rotation_pattern_speeds
  20. ↑ Shen, Juntai; Zheng, Xing-Wu (2020). "The bar and spiral arms in the Milky Way: Structure and kinematics". Research in Astronomy and Astrophysics. 20 (10): 159. arXiv:2012.10130. Bibcode:2020RAA....20..159S. doi:10.1088/1674-4527/20/10/159. S2CID 229005996.
  21. ↑ Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama COBE1993
  22. ↑ 22.0 22.1 Penyalat nyebut: Tag <ref> tidak sah; tiada teks disediakan bagi rujukan yang bernama Kafle2014
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