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) | |
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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 | |
SIMBAD | maʼlumot |
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 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
[tahrir | manbasini tahrirlash]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
- ↑ Manba xatosi: Invalid
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- ↑ 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]]. - ↑ 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.
- ↑ 4,0 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.
- ↑ Spitzer Observations of Two TW Hydrae Association Brown Dwarfs, Basmah Riaz, John E. Gizis, and Abraham Hmiel, Astrophysical Journal 639, #2 (March 2006), pp.
- ↑ 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.
- ↑ Small Stars Create Big Fuss, Ker Than, May 28, 2007, space.com.
- ↑ "The Distance to the 2M1207 System" Webarxiv andozasida xato:
|url=
qiymatini tekshiring. Boʻsh., Eric Mamajek, November 8, 2007. - ↑ 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.
- ↑ 10,0 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.
- ↑ Spitzer Observations of Two TW Hydrae Association Brown Dwarfs, Basmah Riaz, John E. Gizis, and Abraham Hmiel, Astrophysical Journal 639, #2 (March 2006), pp.
- ↑ 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.
- ↑ Small Stars Create Big Fuss, Ker Than, May 28, 2007, space.com.
Havolalar
[tahrir | manbasini tahrirlash]- Space.com - Astronomlar ishonchi komil: Quyosh tizimidan tashqaridagi sayyora suratga olindi
- Bu kashfiyot haqidagi Space.com maqolasi
- Yevropa janubiy observatoriyasidan "Yosh jigarrang mitti yaqinidagi ulkan sayyora nomzodi" (PDF) .
- "TW Hydrae Assotsiatsiyasida 2M1207b Exoplanetgacha harakatlanuvchi klaster masofasi"