Links
[1] http://adsabs.harvard.edu/abs/2008ApJ...673L.159C
[2] http://adsabs.harvard.edu/abs/2008ApJ...674..329C
[3] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0801.2084
[4] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0802.3243
[5] http://adsabs.harvard.edu/abs/2008ApJ...677.1157C
[6] http://adsabs.harvard.edu/abs/2008AJ....136.1201D
[7] http://adsabs.harvard.edu/abs/2008A%26A...482L..35G
[8] http://www.sciencemag.org/cgi/content/abstract/319/5865/927
[9] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0805.4734
[10] http://adsabs.harvard.edu/abs/2008ApJ...688..537M
[11] http://adsabs.harvard.edu/abs/2008ApJ...677..880M
[12] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0710.0137
[13] http://adsabs.harvard.edu/abs/2008A%26A...485...95M
[14] http://adsabs.harvard.edu/abs/2008ApJ...676...80M
[15] http://adsabs.harvard.edu/abs/2008ApJ...689..755M
[16] http://adsabs.harvard.edu/abs/2008AJ....135.1946N
[17] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0711.2481
[18] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0707.0003
[19] http://adsabs.harvard.edu/abs/2008Icar..196..225S
[20] http://adsabs.harvard.edu/abs/2008Natur.453.1079S
[21] http://adsabs.harvard.edu/abs/2008AJ....136..899S
[22] http://adsabs.harvard.edu/abs/2008AJ....135.2048T
[23] http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0709.3973
[24] http://adsabs.harvard.edu/abs/2008A%26A...488..481V
[25] http://adsabs.harvard.edu/abs/2008ApJ...682..492W