Molecular gas in type 2 quasars at z~0.2-0.3

Abstract

We present results of CO(1-0) spectroscopic observations of 10 SDSS type 2 quasars (QSO2) at z~0.2-0.3 observed with the 30m IRAM radiotelescope and the Australia Telescope Compact Array. We report 5 new confirmed CO(1-0) detections and 1 tentative detection. They have L'(CO)~several x 1e9 K km s-1 pc^2, while upper limits for the non detections are L'(CO)<~ several x 1e9 K km s-1 pc^2. This study increases the total number of QSO2 with CO measurements at z<~1 to 20, with a 50% detection rate.

16 pages, 7 figures. Accepted for publication in MNRAS

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• Black Hole Accretion Correlates with Star Formation Rate and Star Formation Efficiency in Nearby Luminous Type 1 Active Galaxies
• The Close AGN Reference Survey (CARS): IFU survey data and the BH mass dependence of long-term AGN variability
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• Limited impact of jet induced feedback in the multi-phase nuclear interstellar medium of 4C12.50
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