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Kaedah pengesanan planet luar sistem suria: Perbezaan antara semakan

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Yosri (bincang | sumb.)
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245,308 suntingan
Yosri (bincang | sumb.)
Birokrat, Penyelia
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Tambahan lagi, gerhana kedua (apabila planet dihalang oleh bintangnya) membenarkan ukuran langsung bagi radiasi planet. IfSekiranya thefotometri star'sbintang [[photometrymeningkat (astronomy)|photometric]]semasa intensitygerhana duringkedua theditolak secondarydari eclipsekekuatan issebelum subtractedatau from its intensity before or afterselepas, onlyhanya theisyarat signalyang causeddihasilkan by theoleh planet remains.itu yang tinggal. ItDengan isitu thenadalah possiblemungkin tobagi measuremengukur thesuhu planet's temperaturedan andmengesan evensebarang totanda detectpembentukan possibleawan signs of cloud formations on itpadanya. InPada March 2005, twodua groupskumpulan ofahli scientistssains carriedmelakukan outpengukuran measurementsmenggunakan usingteknik thisini techniquedengan withTeleskop theAngkasa [[Spitzer Space Telescope]]. TheKedua two teamspasukan, from thedari [["Harvard-Smithsonian Center for Astrophysics]]", leddipimpin byoleh [[David Charbonneau]]harbonneau, and the [[Goddard Space Flight Center]], led by L. D. Deming, studied the planets [[TrES-1]] and [[HD 209458b]] respectively. The measurements revealed the planets' temperatures: 1,060 [[Kelvin|K]] (790°[[Celsius|C]]) for TrES-1 and about 1,130 K (860°C) for HD 209458b.
<ref>{{cite journal | author=Charbonneau ''et al.'' | title=Detection of Thermal Emission from an Extrasolar Planet | journal=The [[Astrophysical Journal]] | year=2005 | volume=626 | issue=1 | pages=523–529 | url=http://www.iop.org/EJ/article/0004-637X/626/1/523/62152.html | doi=10.1086/429991 | last2=Allen | first2=Lori E. | last3=Megeath | first3=S. Thomas | last4=Torres | first4=Guillermo | last5=Alonso | first5=Roi | last6=Brown | first6=Timothy M. | last7=Gilliland | first7=Ronald L. | last8=Latham | first8=David W. | last9=Mandushev | first9=Georgi | bibcode=2005ApJ...626..523C|arxiv = astro-ph/0503457 }}</ref><ref name="Deming">
{{cite journal | author=Deming, D.; Seager, S.; Richardson, J.; Harrington, J. | title=Infrared radiation from an extrasolar planet | journal=Nature | year=2005 | volume=434 | issue= 7034| pages=740–743 | url=http://www.obspm.fr/encycl/papers/nature03507.pdf | doi=10.1038/nature03507|format=PDF | pmid=15785769|arxiv = astro-ph/0503554 |bibcode = 2005Natur.434..740D }}</ref> In addition the hot Neptune [[Gliese 436 b]] enters secondary eclipse. However some transiting planets orbit such that they do not enter secondary eclipse relative to Earth; [[HD 17156 b]] is over 90% likely to be one of the latter.
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