@article {27960,
	title = {Extended Lyα Nebulae at z sime 2.3: An Extremely Rare and Strongly Clustered Population?},
	journal = {The Astrophysical Journal},
	volume = {693},
	year = {2009},
	note = {n/a},
	month = {March 1, 2009},
	pages = {1579-1587},
	abstract = {To obtain an unbiased sample of bright Lyα blobs (L_{Lyα}≳ 10^{43} erg s-1), we have undertaken a blind,wide-field, narrowband imaging survey in the National Optical AstronomyObservatory Deep Wide Field Survey Bo{\"o}tes field with the StewardBok 2.3 m telescope. After searching over 4.82 deg2 at z =2.3, we discover four Lyα blobs with L_{Lyα} = 1.6-5.3{\texttimes} 1043 erg s-1, isophotal areas of 28-57⊓⊔, and broad Lyα line profiles (Δv = 900-1250km  s-1). In contrast with the extended Lyα halosassociated with high-z radio galaxies, none of our four blobs areradio-loud. The X-ray luminosities and optical spectra of these blobsare diverse. Two blobs (3 and 4) are X-ray detected with LX(2-7 keV) = 2-4 {\texttimes} 1044 erg s-1 and havebroad optical emission lines (C IV) characteristic of active galactic
},
	url = {http://adsabs.harvard.edu/abs/2009ApJ...693.1579Y},
	author = {Yang, Yujin and Zabludoff, Ann and Tremonti, Christy and Eisenstein, Daniel and Dav{\'e}, Romeel}
}
