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2022-03-11T16:57:54Z

नया पन्ना

{{Infobox
| title = आकाशगंगा
| image = [[File:ESO-VLT-Laser-phot-33a-07.jpg|300px]]
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पैरानल बेधशाला के पाछे रात के आकास में आकाशगंगा के सेंटर (लेजर द्वारा टेलिस्कोप के गाइड कइल जाला).|style=padding: 4px 0;}}
| titlestyle = background: #30D5C8;
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| belowstyle = background: #30D5C8;
| labelstyle = background: inherit;
| header1 = निरेखन आँकड़ा
| label2 = [[गैलेक्सी के आकृतिक बर्गीकरण|प्रकार]]
| data2 = Sb, Sbc, or SB(rs)bc<ref name=ssr100_1_129>{{Cite journal | last1 = Gerhard | first1 = O. | title = Mass distribution in our Galaxy| journal = Space Science Reviews | volume = 100 | issue=1/4| pages = 129–138 | doi = 10.1023/A:1015818111633 | bibcode=2002SSRv..100..129G| arxiv=astro-ph/0203110| year = 2002 | pmid = | pmc = }}</ref><ref>{{cite web | first1=Hartmut | last1=Frommert | first2=Christine | last2=Kronberg | date=अगस्त 26, 2005 | url= http://messier.seds.org/more/mw_type.html | title= Classification of the Milky Way Galaxy | accessdate=2015-05-30 | work=SEDS}}</ref> (बार (डंडी) वाली स्पाइरल गैलेक्सी)
| label3 = व्यास
| data3 = {{Convert|100|-|180|kly|kpc|abbr=on|lk=on}}<ref>{{cite web|url=http://www.space.com/29270-milky-way-size-larger-than-thought.html|title=Size of the Milky Way Upgraded, Solving Galaxy Puzzle|publisher=Space.com|last=Hall|first=Shannon|date=2015-05-04|accessdate=2015-06-09}}</ref>
| label4 = बीरर डिस्क के मोटाई
| data4 = ≈{{Convert|2|kly|kpc|abbr=on|lk=off|sigfig=1}}<ref name="ask-astro">{{cite web | last1=Coffey | first1=Jeffrey |publisher=Universe Today | title = How big is the Milky Way? | url=http://www.universetoday.com/75691/how-big-is-the-milky-way/ | accessdate = November 28, 2007 |archiveurl=https://web.archive.org/web/20130924002929/http://www.universetoday.com/75691/how-big-is-the-milky-way/ |archivedate=सितंबर 24, 2013}}</ref><ref name="Rix_Bovy">{{cite journal |last1=Rix |first1=Hans-Walter | last2=Bovy |first2=Jo |title=The Milky Way's Stellar Disk |journal=The Astronomy and Astrophysics Review |date=2013 |volume=21 |arxiv=1301.3168 |doi=10.1007/s00159-013-0061-8 |bibcode=2013A&ARv..21...61R}}</ref>
| label6 = तारा सभ के संख्या
| data6 = {{nowrap|200–400 बिलियन (3×1011 ±1×1011)}}<ref name=nasa20071129>{{cite web | title=NASA – Galaxy | publisher=Nasa.gov | work=NASA and World Book | date=नवंबर 29, 2007 | url=http://mynasa.nasa.gov/worldbook/galaxy_worldbook.html| archiveurl=https://web.archive.org/web/20090412172631/http://mynasa.nasa.gov/worldbook/galaxy_worldbook.html| archivedate=अप्रैल 12, 2009| accessdate=दिसंबर 6, 2012 }}</ref><ref name=ut20081216>{{cite web|author=Staff |date=दिसंबर 16, 2008 |title=How Many Stars are in the Milky Way? |publisher=Universe Today |url=http://www.universetoday.com/guide-to-space/milky-way/how-many-stars-are-in-the-milky-way/ |accessdate=अगस्त 10, 2010 |url-status=live |archiveurl=https://web.archive.org/web/20100502073142/http://www.universetoday.com/guide-to-space/milky-way/how-many-stars-are-in-the-milky-way/ |archivedate=मई 2, 2010 }}</ref><ref name=odenwald>{{cite web|author=Odenwald, S. |date=मार्च 17, 2014 |title=Counting the Stars in the Milky Way |publisher=The Huffington Post |url=http://www.huffingtonpost.com/dr-sten-odenwald/number-of-stars-in-the-milky-way_b_4976030.html/ |accessdate=जून 9, 2014 |url-status=live |archiveurl=https://web.archive.org/web/20140801050903/http://www.huffingtonpost.com/dr-sten-odenwald/number-of-stars-in-the-milky-way_b_4976030.html |archivedate=अगस्त 1, 2014 }}</ref>
| label7 = सभसे पुरान तारा
| data7 = ≥13.7 Gyr<ref name=HD_140283_(arXiv)>{{cite journal |title=HD 140283: A Star in the Solar Neighborhood that Formed Shortly After the Big Bang |date=February 13, 2013 |author1=H.E. Bond |display-authors=4 |author2=E. P. Nelan |author3=D. A. VandenBerg |author4=G. H. Schaefer |author5=D. Harmer |doi=10.1088/2041-8205/765/1/L12 |journal=The Astrophysical Journal |volume=765 |pages=L12 |issue=1 |arxiv=1302.3180|bibcode = 2013ApJ...765L..12B }}</ref>
| label8 = द्रब्यमान
| data8 = 0.8–1.5{{e|12}} {{solar mass|link=yes}}<ref name=McMillan2011>{{Cite journal | last1 = McMillan | first1 = P. J. | title = Mass models of the Milky Way | doi = 10.1111/j.1365-2966.2011.18564.x | journal = Monthly Notices of the Royal Astronomical Society | volume = 414 | issue = 3 | pages = 2446–2457 | date=जुलाई 2011 | bibcode=2011MNRAS.414.2446M| pmid = | pmc = |arxiv = 1102.4340 }}</ref><ref name=Kafle2012>{{Cite journal | first1=P.R. | last1=Kafle | first2=S. | last2=Sharma | first3=G.F. | last3=Lewis | first4=J. | last4=Bland-Hawthorn | title= Kinematics of the Stellar Halo and the Mass Distribution of the Milky Way Using Blue Horizontal Branch Stars | journal=The Astrophysical Journal | volume=761 | issue=2 | date=2012 | pages=17 | doi=10.1088/0004-637X/761/2/98 | bibcode=2012ApJ...761...98K|arxiv = 1210.7527 }}</ref>
| label9 = कोणीय वेग
| data9 = ≈{{val|1|e=67|u=J s}}<ref>{{cite web|last1=Karachentsev|first1=Igor|title=Double Galaxies §7.1|url=https://ned.ipac.caltech.edu/level5/Sept02/Keel/Keel7.html|website=ned.ipac.caltech.edu|publisher=Izdatel'stvo Nauka|accessdate=5 अप्रैल 2015}}</ref>
| label10 = सूरज से [[गैलेक्सी सेंटर]] के दूरी
| data10 = {{convert|27.2|±|1.1|kly|kpc|abbr=on|lk=off}}<ref name=apj692_2_1075>{{Cite journal | display-authors=1| doi = 10.1088/0004-637X/692/2/1075 | last1 = Gillessen | first1 = S. | last2 = Eisenhauer | first2 = F. | last3 = Trippe | first3 = S. | last4 = Alexander | first4 = T. | last5 = Genzel | first5 = R. | last6 = Martins | first6 = F. | last7 = Ott | first7 = T.| title=Monitoring stellar orbits around the massive black hole in the Galactic Center| journal = [[Astrophysical Journal]]| volume = 692 | issue = 2| pages = 1075–1109| arxiv=0810.4674 | year = 2009| bibcode=2009ApJ...692.1075G}}</ref>
| label11 = Sun's [[Galactic Year|Galactic rotation period]]
| data11 = 240 [[Myr]]<ref name="sparke_gallagher">{{cite book | title=Galaxies in the Universe: An Introduction | last1=Sparke | first1=Linda S. | last2=Gallagher | first2=John S. | pages=90 | date=2007 | isbn= 9781139462389}}</ref>

| label12 = Spiral pattern rotation period
| data12 = 220–360 Myr<ref name=rotation_pattern_speeds>{{cite journal | last1=Gerhard| first1=O. | title = Pattern speeds in the Milky Way | arxiv=1003.2489v1 }}</ref>
| label13 = Bar pattern rotation period
| data13 = 100–120 Myr<ref name=rotation_pattern_speeds/>
| label14 = Speed relative to Cosmic microwave background rest frame
| data14 = {{nowrap|552 ± 6 km/s}}<ref name="dipole">{{Cite journal | display-authors=1 | last1 = Kogut | first1 = A. | last2 = Lineweaver | first2 = C. | last3 = Smoot | first3 = G. F. | last4 = Bennett | first4 = C. L. | last5 = Banday | first5 = A. | last6 = Boggess | first6 = N. W. | last7 = Cheng | first7 = E. S. | last8 = De Amici | first8 = G. | last9 = Fixsen | first9 = D. J. | last10=Hinshaw | first10=G. | last11=Jackson | first11=P. D. | last12=Janssen | first12=M. | last13=Keegstra | first13=P. | last14=Loewenstein | first14=K. | last15=Lubin | first15=P. | last16=Mather | first16=J. C. | last17=Tenorio | first17=L. | last18=Weiss | first18=R. | last19=Wilkinson | first19=D. T. | last20=Wright | first20=E. L.| title = Dipole anisotropy in the COBE differential microwave radiometers first-year sky maps | doi = 10.1086/173453 | journal = The Astrophysical Journal | volume = 419 | pages = 1 | year = 1993 | bibcode=1993ApJ...419....1K| arxiv=astro-ph/9312056| pmid = | pmc = }}</ref>
| below = See also: [[गैलेक्सी]]
| label15 = Escape velocity at Sun's position
| data15 = 550 km/s<ref name=Kafle2014>{{Cite journal | first1=P.R. | last1=Kafle | first2=S. | last2=Sharma | first3=G.F. | last3=Lewis | first4=J. | last4=Bland-Hawthorn | title= On the Shoulders of Giants: Properties of the Stellar Halo and the Milky Way Mass Distribution| journal=The Astrophysical Journal | volume=794 | issue=1 | date=2014 | pages=17 | doi=10.1088/0004-637X/794/1/59 | bibcode=2014ApJ...794...59K|arxiv = 1408.1787 }}</ref>
| label16 = Dark matter density at Sun's position
| data16 = 0.0088{{sup sub|+0.0024 |-0.0018}} {{solar mass|link=yes}}pc{{sup|-3}} or 0.35{{sup sub|+0.08|-0.07}} GeV cm{{sup|-3}}<ref name="Kafle2014"/>
}}
'''आकाशगंगा''' या '''मंदाकिनी''' या '''मिल्की वे''' ({{Lang-en|Milk yway}}) एगो [[गैलेक्सी]] बा जौना में हमनी के [[सौरमंडल]] स्थित बाटे। ई एगो [[स्पाइरल गैलेक्सी]] हवे जेवना कि बिचली बाँही में हमनी के सौरमंडल बाटे।

एकर नाँव आसमान में एकरे देखलाई पड़े के आधार पर रखल गइल हवे। साफ़ आकास में ई रात खा बदरी के रेख नियर लउके ले।

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==संदर्भ==
{{Reflist|32em}}

[[श्रेणी:गैलेक्सी]]
[[श्रेणी:आकाशगंगा| ]]

{{खगोल-आधार}}

आकाशगंगा - बदलाव इतिहास

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