منابع مشابه
Host Galaxies of 2mass-selected Qsos to Redshift 0.3
We present and discuss optical imaging of 76 AGN which represent the 2MASS-selected sample for z<0.3, from a full list of 243. They are found to have dust-obscured nuclei, residing in host galaxies that show a high fraction (>70%) of tidal interactions. The derived luminosities of the AGN and host galaxies are similar to traditionally-selected AGN, and they may comprise some 40% of the total AG...
متن کاملHost Galaxies of 2mass-selected Qsos at Redshift over 0.3
We have obtained optical imaging with the Canada France Hawaii Telescope (CFHT) of 21 2MASS-selected QSOs of redshift greater than 0.3. This paper complements the sample of lower redshift 2MASS QSOs previously published. The QSOs have higher overall and nuclear luminosity, bluer colours, and higher ratio of nuclear to host flux than the lower redshift sample. From these and other properties, we...
متن کاملHost Galaxies of Z∼4.7 Qsos
2µ broad-and narrow-band imaging with the Gemini-N telescope of five z∼4.7 QSOs, has resolved both the host galaxies and [O II] emission-line gas. The resolved fluxes of the host galaxies fall within the extrapolated spread of the K-z relationship for radio galaxies at lower redshifts, and their resolved morphology is irregular. The [O II] images indicate knots coincident with many continuum fe...
متن کاملThe Environments of High Redshift QSOs
We present a sample of i-dropout candidates identified in five Hubble Advanced Camera for Surveys fields centered on Sloan Digital Sky Surveys QSOs at redshift z ∼ 6. Our fields are as deep as the Great Observatory Origins Deep Survey (GOODS) ACS images which are used as a reference field sample. The galaxies are color-selected. We find them to be overdense in two fields, underdense in two fiel...
متن کاملThe 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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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2004
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921304003114