2M1207 sahifasining manbasini koʻrish

{{Yulduz bilgiqutisi (boshlanishi)|name=2M1207}}
{{Yulduz bilgiqutisi (rasm)|rasm=[[Image:2M1207b - First image of an exoplanet.jpg|250px]]|izoh=[[European Southern Observatory]] infrared image of 2M1207 (bluish) and companion planet [[2M1207b]] (reddish), taken in 2004.}}
{{Yulduz bilgiqutisi (kuzatuv)|epoch=[[J2000.0]] ([[International Celestial Reference System|ICRS]])|turkum=[[Sentavr]]|ra={{RA|12|07|33.47}}<ref name=sb />|dec={{DEC|−39|32|54.0}}<ref name=sb />|appmag_v=20.15<ref name=dc08>An accurate distance to 2M1207Ab, C. Ducourant, R. Teixeira, G. Chauvin, G. Daigne, J.-F. Le Campion, Inseok Song, and B. Zuckerman, ''Astronomy and Astrophysics'' '''477''', #1 (January 2008), pp. L1–L4.  {{bibcode|2008A&A...477L...1D}}  {{doi|10.1051/0004-6361:20078886}}.</ref>}}
{{Starbox character|v-r=+2.1<ref name=dc08 />|r-i=+2.1<ref name=dc08 />|class=M8p<ref name=sb />}}
{{Starbox astrometry|prop_mo_ra={{val|-64.040|0.087}}<ref name="GaiaEDR3"/>|prop_mo_dec={{val|-23.678|0.072}}<ref name="GaiaEDR3"/>|parallax=15.4624|p_error=0.1163|parallax_footnote=<ref name="GaiaEDR3">{{Cite Gaia EDR3|3459372646830687104}}</ref>}}
{{Starbox detail|mass=~0.025<ref name=mamajek />|temperature=2550 ± 150<ref name=mohanty>The Planetary Mass Companion 2MASS 1207-3932B: Temperature, Mass, and Evidence for an Edge-on Disk, Subhanjoy Mohanty, Ray Jayawardhana, Nuria Huelamo, and Eric Mamajek, ''Astrophysical Journal'' '''657''', #2 (March 2007), pp. 1064–1091.  {{bibcode|2007ApJ...657.1064M}} {{doi|10.1086/510877}}.</ref>|age=5·10<sup>6</sup> to 10·10<sup>6</sup><ref name=mohanty />|radius=~0.25<ref name=mohanty />|luminosity=~0.002<ref name=mohanty />}}
{{Starbox catalog|names=2MASSW J1207334−393254, 2MASS J12073346-3932539, TWA 27<ref name=sb>{{cite simbad|title=TWA 27|access-date=June 15, 2008}}</ref>}}
{{Yulduz bilgiqutisi (adabiyot)|Simbad=NAME+2M1207A}}
{{End}}'''2M1207''', '''2M1207A''' yoki '''2MASSW J12073346–3932539''' - [[Sentavr|Centaurus]] [[Yulduz turkumlari|yulduz turkumida]] joylashgan jigarrang mitti ; 2M1207b hamroh ob'ekti to'g'ridan-to'g'ri tasvirlangan birinchi Quyoshdan tashqari [[Ekzosayyora|sayyora]] massasi bo'lishi mumkin va jigarrang mitti atrofida aylanib yurgan birinchi kashf etilgan.  <ref>{{Cite journal|last=Chauvin|first1=G.|last2=Lagrange, A.-M.|last3=Dumas, C.|last4=Zuckerman, B.|last5=Mouillet, D.|last6=Song, I.|last7=Beuzit, J.-L.|last8=Lowrance, P.|title=A Giant Planet Candidate near a Young Brown Dwarf|journal=Astron. Astrophys.|volume=425|issue=2|pages=L29–L32|year=2004|arxiv=astro-ph/0409323|doi=10.1051/0004-6361:200400056|bibcode=2004A&A...425L..29C}}</ref>

Klassik singari, ko'plab jigarrang mittilar jigarrang mitti ustiga to'plangan gaz va chang halqalari

bilan o'ralgan. <ref name="uv2">First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H<sub>2</sub> Fluorescence and Accretion, John E. Gizis, Harry L. Shipman, and James A. Harvin, ''Astrophysical Journal'' '''630''', #1 (September 2005), pp.</ref> 2M1207 keng H <sub>a</sub> chizig'i tufayli birinchi bo'lib bunday diskga ega ekanligiga shubha qilingan edi. Keyinchalik bu [[Ultrabinafsha nurlanish|ultrabinafsha]] [[spektroskopiya]] bilan tasdiqlangan.<ref name="uv2" /> Chang diskining mavjudligi [[Infraqizil nurlanish|infraqizil]] kuzatuvlar bilan ham tasdiqlangan.<ref>Spitzer Observations of Two TW Hydrae Association Brown Dwarfs, Basmah Riaz, John E. Gizis, and Abraham Hmiel, ''Astrophysical Journal'' '''639''', #2 (March 2006), pp.</ref> Umuman olganda, disklarning to'planishi diskka perpendikulyar ravishda chiqarilgan materialdan tez harakatlanuvchi oqimlarni hosil qilishi ma'lum. Bu 2M1207 uchun ham kuzatilgan; 2007 yil aprel oyida ''Astrophysical Journal jurnalida'' chop etilgan maqolada bu jigarrang mitti o'z qutblaridan zarrachalar otayotgani haqida xabar berilgan.<ref>{{Cite journal|doi=10.1086/516734|last=Whelan|title=Discovery of a Bipolar Outflow from 2MASSW J1207334-393254, a 24 MJup Brown Dwarf|journal=The Astrophysical Journal|volume=659|date=April 10, 2007|issue=1|pages=L45 – L48|bibcode=2007ApJ...659L..45W|last2=Ray|first2=T. P.|last3=Randich|first3=S.|last4=Bacciotti|first4=F.|last5=Jayawardhana|first5=R.|last6=Testi|first6=L.|last7=Natta|first7=A.|last8=Mohanty|first8=S.|arxiv=astro-ph/0703112|display-authors=etal}}</ref> Kosmosga taxminan 10 <sup>9</sup> kv. kilometr masofaga cho'zilgan samolyotlar [[Yevropa janubiy rasadxonasi|Yevropa janubiy observatoriyasida]] juda katta teleskop (VLT) yordamida topilgan. Samolyotlardagi materiallar kosmosga soniyasiga bir necha kilometr tezlikda oqadi.<ref name="sp2">[http://www.space.com/scienceastronomy/070528_mm_bdwarf_jets.html Small Stars Create Big Fuss], Ker Than, May 28, 2007, space.com.</ref> Bu esa juda zavqli, shunday emasmi?!

2M1207gacha bo'lgan masofa uchun dastlabki fotometrik taxmin 70 parsek edi.<ref name="mamajek">[http://www.cfa.harvard.edu/~emamajek/memo_2m1207.html "The Distance to the 2M1207 System"] {{Webarxiv}}, Eric Mamajek, November 8, 2007.  </ref> 2005 yil dekabr oyida amerikalik astronom {{Tarjima qilinmagan|Eric Mamajek|fr}} harakatlanuvchi klaster usuli yordamida 2M1207gacha aniqroq masofani (53 ± 6 parsek) xabar qildi.<ref>{{Cite journal|bibcode=2005ApJ...634.1385M|last=Mamajek|title=A Moving Cluster Distance to the Exoplanet 2M1207b in the TW Hydrae Association|url=https://archive.org/details/sim_astrophysical-journal_2005-12-01_634_2/page/n688|journal=The Astrophysical Journal|volume=634|issue=2|year=2005|pages=1385–1394|doi=10.1086/468181|arxiv=astro-ph/0507416}}</ref> Yangi masofa 2M1207 uchun zaifroq [[Yulduz yorqinligi|yorqinlikni]] beradi. Oxirgi trigonometrik parallaks natijalari bu harakatlanuvchi klaster masofasini tasdiqladi, bu esa 53 ± 1 [[parsek]] yoki 172 ± 3 [[Yorugʻlik yili|yorug'lik]] yiliga teng masofani baholashga olib keldi.

== Sayyora tizimi ==
Klassik yulduzlar singari, ko'plab jigarrang mittilar jigarrang mitti ustiga to'plangan gaz va chang radius bilan o'ralgan. <ref name="uv">First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H<sub>2</sub> Fluorescence and Accretion, John E. Gizis, Harry L. Shipman, and James A. Harvin, ''Astrophysical Journal'' '''630''', #1 (September 2005), pp. </ref> 2M1207 keng H <sub>a</sub> chizig'i tufayli birinchi bo'lib bunday diskga ega ekanligiga shubha qilingan edi. Keyinchalik bu [[Ultrabinafsha nurlanish|ultrabinafsha]] [[spektroskopiya]] bilan tasdiqlangan.<ref name="uv" /> Chang diskining mavjudligi [[Infraqizil nurlanish|infraqizil]] kuzatuvlar bilan ham tasdiqlangan.<ref>Spitzer Observations of Two TW Hydrae Association Brown Dwarfs, Basmah Riaz, John E. Gizis, and Abraham Hmiel, ''Astrophysical Journal'' '''639''', #2 (March 2006), pp. </ref> Umuman olganda, disklarning to'planishi diskka perpendikulyar ravishda chiqarilgan materialdan tez harakatlanuvchi oqimlarni hosil qilishi ma'lum.  Bu 2M1207 uchun ham kuzatilgan; 2007 yil aprel oyida ''Astrophysical Journal jurnalida'' chop etilgan maqolada bu jigarrang mitti o'z qutblaridan zarrachalar otayotgani haqida xabar berilgan.<ref>{{Cite journal|doi=10.1086/516734|last=Whelan|title=Discovery of a Bipolar Outflow from 2MASSW J1207334-393254, a 24 MJup Brown Dwarf|journal=The Astrophysical Journal|volume=659|date=April 10, 2007|issue=1|pages=L45 – L48|bibcode=2007ApJ...659L..45W|last2=Ray|first2=T. P.|last3=Randich|first3=S.|last4=Bacciotti|first4=F.|last5=Jayawardhana|first5=R.|last6=Testi|first6=L.|last7=Natta|first7=A.|last8=Mohanty|first8=S.|arxiv=astro-ph/0703112|display-authors=etal}}</ref> Kosmosga taxminan 10 <sup>9</sup> kilometr masofaga cho'zilgan samolyotlar [[Yevropa janubiy rasadxonasi|Yevropa janubiy observatoriyasida]] juda katta teleskop (VLT) yordamida topilgan. Samolyotlardagi materiallar kosmosga soniyasiga bir necha kilometr tezlikda oqadi.<ref name="sp">[http://www.space.com/scienceastronomy/070528_mm_bdwarf_jets.html Small Stars Create Big Fuss], Ker Than, May 28, 2007, space.com. </ref>{{OrbitboxOnePlanet|exoplanet=[[2M1207b|b]]|mass=3–10<ref name=encyc />|separation=40.6 ± 1.3<ref>From estimated distance of 52.75 ± 1.0 parsec and observed angular separation of 769 ± 10 milliarseconds (angular separation from Mohanty 2007, above.)</ref>}}
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== Havolalar ==

* [http://space.com/scienceastronomy/aas_exoplanet_050110.html Space.com - Astronomlar ishonchi komil: Quyosh tizimidan tashqaridagi sayyora suratga olindi]
* [http://www.space.com/scienceastronomy/planet_photo_040910.html Bu kashfiyot haqidagi Space.com maqolasi]
* 
* [[Yevropa janubiy rasadxonasi|Yevropa janubiy observatoriyasidan]] [https://web.archive.org/web/20041013153848/http://www.sc.eso.org/~gchauvin/Gg222.pdf "Yosh jigarrang mitti yaqinidagi ulkan sayyora nomzodi" (PDF)] .
* [[arxiv:astro-ph/0507416|"TW Hydrae Assotsiatsiyasida 2M1207b Exoplanetgacha harakatlanuvchi klaster masofasi"]]