[CII] line emission in BRI 1335-0417 at z = 4.4
[CII] line emission in BRI 1335-0417 at z = 4.4
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[CII] BRI 1335-0417 中 z = 4.4 处的线发射
DOI：
10.1051/0004-6361/201015424
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发表时间：
2010
影响因子：
6.5
通讯作者：
F. Walter
中科院分区：
文献类型：
--
作者：
J. Wagg;C. Carilli;D. Wilner;P. Cox;C. Breuck;K. Menten;D. Riechers;F. Walter
利用12米APEX望远镜观测到z = 4.4074的类星体BRI 1335-0417的157.74 μm [CII]线的红移辐射。线宽和红移与以前的高J CO线发射的观测结果符合得很好。 我们测量了一条[CII]线的亮度，L_（[CII]）=（16.4 ± 2.6）× 10^9 L_（？），使BRI 1335-0417成为已知的在高红移处最亮的无透镜[CII]线发射体。对于一个FIR光度L_（FIR）= 3.1 × 10 ^（13）L_（？）的平均天体，[CII]与FIR的光度比为（5.3 ± 0.8）× 10 ^（-4），如果这个比值遵循在[CII]线发射中检测到的其他FIR亮星系中观察到的趋势，那么这个比值比预期值高出约3倍。这些新的数据表明，[CII]与FIR光度比的散射可能大于先前对高光度物体的预期。BR 1335 -0417的远红外线光度和[CII]/CO光度与当地的ULIRGS相似，似乎是一个富含气体的合并恒星，每年以几千个太阳质量的速度形成。
Using the 12-m APEX telescope, we have detected redshifted emission from the 157.74 μm [CII] line in the z = 4.4074 quasar BRI 1335-0417. The linewidth and redshift are in good agreement with previous observations of high-J CO line emission. We measure a [CII] line luminosity, L_([CII]) = (16.4 ± 2.6) × 10^9 L_☉, making BRI 1335-0417 the most luminous, unlensed [CII] line emitter known at high-redshift. The [CII]-to-FIR luminosity ratio of (5.3 ± 0.8) × 10^(-4) is ~3× higher than expected for an average object with a FIR luminosity L_(FIR) = 3.1 × 10^(13) L_☉, if this ratio were to follow the trend observed in other FIR-bright galaxies that have been detected in [CII] line emission. These new data suggest that the scatter in the [CII]-to-FIR luminosity ratio could be larger than previously expected for high luminosity objects. BR1335-0417 has a similar FIR luminosity and [CII]/CO luminosity compared to local ULIRGS and appears to be a gas-rich merger forming stars at a rate of a few thousand solar masses per year.
DOI：
10.1088/0004-637x/703/2/1338
发表时间：
2009-07
期刊：
The Astrophysical Journal
影响因子：
--
作者：
D. Riechers;F. Walter;F. Bertoldi;C. Carilli;M. Aravena;R. Neri;P. Cox;A. Weiss;K. Menten
通讯作者：
D. Riechers;F. Walter;F. Bertoldi;C. Carilli;M. Aravena;R. Neri;P. Cox;A. Weiss;K. Menten
影响因子：
64.8
作者：
F. Walter;D. Riechers;P. Cox;R. Neri;C. Carilli;F. Bertoldi;A. Weiss;R. Maiolino
通讯作者：
F. Walter;D. Riechers;P. Cox;R. Neri;C. Carilli;F. Bertoldi;A. Weiss;R. Maiolino