Environments of Qsos at Intermediate Redshifts
نویسنده
چکیده
A preliminary analysis of fields around 20 mainly radio– quiet QSOs (RQQs) at intermediate redshift is summarized. We find overdensities of faint sources around 50% of our observed QSOs suggesting that they are located in groups or even clusters of galaxies.
منابع مشابه
The environments of intermediate - redshift QSOs : 0
An angular correlation of low significance (2σ) is observed between 0·3 < z < 0·5 QSOs and V ≤ 23 galaxies. Overall, the cross-correlation function between 82 intermediate-redshift (0·3 < z < 0·7), X-ray selected QSOs and V <∼ 24 galaxies is investigated, but no signal is detected for the z > 0·5 QSOs. After converting to an excess of galaxies physically associated with the QSO, this lack of st...
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