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2M1207

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2M1207

European Southern Observatory infrared image of 2M1207 (bluish) and companion planet 2M1207b (reddish), taken in 2004.
Kuzatuv maʼlumotlari
Epoch J2000.0      Equinox J2000.0 (ICRS)
Yulduz turkumi Sentavr
Right ascension 12soat 07daq 33.47s[1]
Deklensiya {{{dek}}}
Koʻrinuvchi kattaligi (V) {{{Koʻrinuvchi kattaligi}}}

Andoza:Starbox character Andoza:Starbox astrometry Andoza:Starbox detail Andoza:Starbox catalog

Maʼlumotlar baʼzasi uchun havolalar
SIMBADmaʼlumot

2M1207, 2M1207A yoki 2MASSW J12073346–3932539 - Centaurus yulduz turkumida joylashgan jigarrang mitti ; 2M1207b hamroh ob'ekti to'g'ridan-to'g'ri tasvirlangan birinchi Quyoshdan tashqari sayyora massasi bo'lishi mumkin va jigarrang mitti atrofida aylanib yurgan birinchi kashf etilgan. [3]

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

bilan o'ralgan. [4] 2M1207 keng H a chizig'i tufayli birinchi bo'lib bunday diskga ega ekanligiga shubha qilingan edi. Keyinchalik bu ultrabinafsha spektroskopiya bilan tasdiqlangan.[4] Chang diskining mavjudligi infraqizil kuzatuvlar bilan ham tasdiqlangan.[5] 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.[6] Kosmosga taxminan 10 9 kv. kilometr masofaga cho'zilgan samolyotlar Yevropa janubiy observatoriyasida juda katta teleskop (VLT) yordamida topilgan. Samolyotlardagi materiallar kosmosga soniyasiga bir necha kilometr tezlikda oqadi.[7] Bu esa juda zavqli, shunday emasmi?!

2M1207gacha bo'lgan masofa uchun dastlabki fotometrik taxmin 70 parsek edi.[8] 2005 yil dekabr oyida amerikalik astronom Eric Mamajek [fr] harakatlanuvchi klaster usuli yordamida 2M1207gacha aniqroq masofani (53 ± 6 parsek) xabar qildi.[9] Yangi masofa 2M1207 uchun zaifroq yorqinlikni beradi. Oxirgi trigonometrik parallaks natijalari bu harakatlanuvchi klaster masofasini tasdiqladi, bu esa 53 ± 1 parsek yoki 172 ± 3 yorug'lik yiliga teng masofani baholashga olib keldi.

Sayyora tizimi

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Klassik yulduzlar singari, ko'plab jigarrang mittilar jigarrang mitti ustiga to'plangan gaz va chang radius bilan o'ralgan. [10] 2M1207 keng H a chizig'i tufayli birinchi bo'lib bunday diskga ega ekanligiga shubha qilingan edi. Keyinchalik bu ultrabinafsha spektroskopiya bilan tasdiqlangan.[10] Chang diskining mavjudligi infraqizil kuzatuvlar bilan ham tasdiqlangan.[11] 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.[12] Kosmosga taxminan 10 9 kilometr masofaga cho'zilgan samolyotlar Yevropa janubiy observatoriyasida juda katta teleskop (VLT) yordamida topilgan. Samolyotlardagi materiallar kosmosga soniyasiga bir necha kilometr tezlikda oqadi.[13]Andoza:OrbitboxOnePlanet

  1. ↑ Manba xatosi: Invalid <ref> tag; no text was provided for refs named sb
  2. ↑ 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 Template loop detected: Andoza:Doi
    This citation will be automatically completed in the next few minutes. You can jump the queue or expand by hand2M1207]].
  3. ↑ Chauvin, G.; Lagrange, A.-M.; Dumas, C.; Zuckerman, B.; Mouillet, D.; Song, I.; Beuzit, J.-L.; Lowrance, P. (2004). "A Giant Planet Candidate near a Young Brown Dwarf". Astron. Astrophys. 425 (2): L29–L32. doi:10.1051/0004-6361:200400056. 
  4. ↑ 4,0 4,1 First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H2 Fluorescence and Accretion, John E. Gizis, Harry L. Shipman, and James A. Harvin, Astrophysical Journal 630, #1 (September 2005), pp.
  5. ↑ Spitzer Observations of Two TW Hydrae Association Brown Dwarfs, Basmah Riaz, John E. Gizis, and Abraham Hmiel, Astrophysical Journal 639, #2 (March 2006), pp.
  6. ↑ WhelanExpression error: Unrecognized word "etal". (April 10, 2007). "Discovery of a Bipolar Outflow from 2MASSW J1207334-393254, a 24 MJup Brown Dwarf". The Astrophysical Journal 659 (1): L45 – L48. doi:10.1086/516734. 
  7. ↑ Small Stars Create Big Fuss, Ker Than, May 28, 2007, space.com.
  8. ↑ "The Distance to the 2M1207 System" Webarxiv andozasida xato: |url= qiymatini tekshiring. Boʻsh., Eric Mamajek, November 8, 2007.
  9. ↑ Mamajek (2005). "A Moving Cluster Distance to the Exoplanet 2M1207b in the TW Hydrae Association". The Astrophysical Journal 634 (2): 1385–1394. doi:10.1086/468181. 
  10. ↑ 10,0 10,1 First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H2 Fluorescence and Accretion, John E. Gizis, Harry L. Shipman, and James A. Harvin, Astrophysical Journal 630, #1 (September 2005), pp.
  11. ↑ Spitzer Observations of Two TW Hydrae Association Brown Dwarfs, Basmah Riaz, John E. Gizis, and Abraham Hmiel, Astrophysical Journal 639, #2 (March 2006), pp.
  12. ↑ WhelanExpression error: Unrecognized word "etal". (April 10, 2007). "Discovery of a Bipolar Outflow from 2MASSW J1207334-393254, a 24 MJup Brown Dwarf". The Astrophysical Journal 659 (1): L45 – L48. doi:10.1086/516734. 
  13. ↑ Small Stars Create Big Fuss, Ker Than, May 28, 2007, space.com.

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