The Connection Between Quasars and Starbursts
Zusammenfassung der Projektergebnisse
We were able to achieve the goals that we originally set. This included the detailed studies of the interstellar medium in high-redshift quasars by using state-of-the art observations obtained at various radio/millimeter facilities, including the GBT, Effelsberg, (E)VLA and the IRAM Plateau de Bure interferometer. Key results are the first detection of high-density tracer molecules, the first spatially resolved imaging of the molecular ISM of high-redshift quasar hosts, the first studies of the J=1 CO transition (the best tracer for the total molecular gas mass) in a sample of high-redshift quasars, and constraining high–z QSO SEDs. Lately, we have extended this study to ionized carbon, which we have proven to be a powerful tracer of the star-forming interstellar medium. We made strong use of the upgraded IRAM PdBI interferometer and we used the newly available broad band-width receivers at the PdBI and the EVLA to search for molecular gas emission in objects that have so far have escaped the detection of gas. The studies funded through our SPP grant have provided crucial insights on the relation between the central AGN/QSO activity and star formation in the host galaxies.
Projektbezogene Publikationen (Auswahl)
- 2009, A&A, 496, 45: New CO detections of lensed submillimetre galaxies in A2218: probing molecular gas in the LIRG regime at high redshift
Knudsen, K. K., et al.
(Siehe online unter https://doi.org/10.1051/0004-6361:200810876) - 2009, ApJ, 703, 1338: Imaging Atomic and Highly Excited Molecular Gas in a z = 6.42 Quasar Host Galaxy ...
Riechers, D. A., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/703/2/1338) - 2010, A&A, 518, L34: Herschel-PACS FIR photometry of two z ≥ 4 quasars
Leipski, C., et al.
(Siehe online unter https://doi.org/10.1051/0004-6361/201014718) - 2010, ApJ, 709, 210: Physical Properties and Morphology of a Newly Identified Compact z = 4.04 Lensed Submillimeter Galaxy in Abell 2218
Knudsen, K. K., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/709/1/210) - 2010, ApJ, 711, 757: CO J = 6-5 in Arp 220: Strong Effects of Dust on High-J CO Lines
Papadopoulos, P., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/711/2/757) - 2010, ApJ, 714, 699: Molecular Gas in z ∼ 6 Quasar Host Galaxies
Wang, R., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/714/1/699) - 2010, ApJ, 714, 834: Ionization Near Zones Associated with Quasars at z ∼ 6
Carilli, C. L., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/714/1/834) - 2010, ApJ, 715, 775: CO Spectral Line Energy Distributions of Infrared- Luminous Galaxies and Active Galactic Nuclei
Papadopoulos, P., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/715/2/775) - 2010, ApJ, 717, 1037: Deviations from the Schmidt-Kennicutt Relations During Early Galaxy Evolution
Papadopoulos, P., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/717/2/1037) - 2010, ApJ, 719, 483: A LABOCA Survey of the Extended Chandra Deep Field South – Submillimeter Properties of Near-infrared Selected Galaxies
Greve, T. R., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/719/1/483) - 2010, ApJ, 720, 226: A Cosmic-ray-dominated Interstellar Medium in Ultra Luminous Infrared Galaxies: New Initial Conditions for Star Formation
Papadopoulos, P.
(Siehe online unter https://doi.org/10.1088/0004-637X/720/1/226) - 2011, AJ, 142, 101: Far-infrared and Molecular CO Emission from the Host Galaxies of Faint Quasars at z ∼ 6
Wang, Ran, et al.
(Siehe online unter https://doi.org/10.1088/0004-6256/142/4/101) - 2011, ApJ, 726, 50: Dense Molecular Gas Excitation at High Redshift: Detection of HCO+(J = 4-3) Emission in the Cloverleaf Quasar
Riechers, D. A., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/726/1/50) - 2011, ApJ, 739, 56: Evidence for Non-evolving Fe II/Mg II Ratios in Rapidly Accreting z ∼ 6 QSOs
De Rosa, G., et al.
(Siehe online unter https://doi.org/10.1088/0004-637X/739/2/56) - 2011, ApJ, 739, L30: A Molecular Einstein Ring Toward the z = 3.93 Submillimeter Galaxy MM18423+5938
Lestrade, Jean-Francois, et al.
(Siehe online unter https://doi.org/10.1088/2041-8205/739/1/L30) - 2011, ApJ, 739, L31: Extended Cold Molecular Gas Reservoirs in z ≃ 3.4 Submillimeter Galaxies
Riechers, D. A., et al.
(Siehe online unter https://doi.org/10.1088/2041-8205/739/1/L31) - 2011, ApJ, 739, L34: CO (2-1) Line Emission in z = 6 Quasar Host Galaxies
Wang, Ran, et al.
(Siehe online unter https://doi.org/10.1088/2041-8205/739/1/L34) - 2011, ApJ, 741, L38: Water Vapor Emission Reveals a Highly Obscured, Star-forming Nuclear Region in the QSO Host Galaxy APM 08279+5255 at z = 3.9
van der Werf, Paul P., et al.
(Siehe online unter https://doi.org/10.1088/2041-8205/741/2/L38)
