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GRB091127/SN2009nz and the VLT/X-shooter spectroscopy of its host galaxy: probing the faint end of the mass-metallicity relation
Gamma-rays bursts: individual: GRB091127 – supernovae: individual: SN2009nz – Galaxies: ISM– Galaxies: evolution
2011/10/12
We perform a detailed study of the gamma-ray burst GRB091127/SN2009nz host galaxy at z=0.490 using the VLT/X-shooter spectrograph in slit and integral-field unit (IFU). From the analysis of the optica...
Sparse aperture masking at the VLT I. Faint companion detection limits for the two debris disk stars HD 92945 and HD 141569
Instrumentation: high angular resolution – Stars: planetary systems – Stars: individual
2011/9/29
Observational data on companion statistics around young stellar systems is needed to flesh out the formation pathways for extrasolar planets and brown dwarfs. Aperture masking is a new technique that ...
VLT探测到另一个远距离的恒星质量黑洞
恒星质量黑洞 天文学家 恒星
2011/12/16
天文学家发现了第二大恒星质量黑洞，质量大于15倍太阳质量。这个恒星质量黑洞位于NGC 300星系，距离地球六百万光年。同时发现的还有伴随它的一颗沃尔夫-拉叶星，质量大约是太阳的20倍。
Preliminary Results on VLT K-band Imaging Observations of GRB Host Galaxies
evolution high-redshift Gamma-ray Bursts
2009/5/19
We have obtained K-band imaging observations of Gamma-
Ray Burst (GRB) host galaxies with the near-infrared spectro-imager
ISAAC installed on the Very Large Telescope at Paranal (Chile). The
derive...