High-z supermassive infrared objects

	The sub-millimetre discovery of a large population of ultra-luminous infrared population at very high redshift was one of the major recent breakthroughs in the exploration of the high-z, young Universe. With such objects, we are probably directly seeing major episodes of the star formation in progenitors of massive elliptical galaxies today. The mm/submm range presents the unique advantage of a sensitivity being independent from distance, allowing the detection of dusty starbursts as far as they could exist. This was one of the main motivations for undertaking ALMA.
	The following current projects, carried out in the frame of broad international collaborations, participate in forefront studies to identify such exceptional objects and to characterize their dust and molecular content, structure, star formation and environment, with a special emphasis on the numerous cases at very high redshift where prominent AGN are hosted in galaxies with such exceptional starbursts.

Current research projects :

Millimetre detection of dust emission of luminous high-z QSOS
[Main collaborators: A. Beelen (IAS & Bonn), P. Cox (IRAM & IAS), F. Bertoldi (Bonn), C. Carilli (NRAO), X. Fan (Tucson & SDSS)]

Millimetre identification of Hyper-Luminous Infra-Red Galaxies among sources of the SWIRE/Spitzer survey 
[Main collaborators: C. Lonsdale & M. Polletta (UCSD), P. Cox & R. Zylka (IRAM)]

Search and maps of CO emission of high-z sub-millimetre galaxies with IRAM-PdB 
[Main collaborators: R. Genzel (MPE Garching), R. Ivison (Edinburgh), R. Neri & P. Cox (IRAM), T. Greve (Caltech), L. Tacconi (MPE Garching) et al.]

CO search in high-z QSOs 
[Main collaborators: P. Cox & R. Neri (IRAM), I. Smail (Durham) et al.] 

Millimetre studies of Type 2 QSOs
[Main collaborators: M. Strauss & N. Zakamska (Princeton & SDSS), R. Zylka (IRAM)]

Near-IR and millimetre studies of the environment of high-z radio galaxies
[Main collaborators: C. De Breuck, A. Galametz & J. Vernet (ESO), N. Seymour (Caltech), D. Stern (JPL)]

Spitzer infrared emission of z=3-4 Lyman dropouts in Deep CFHTLS fields
[Main collaborators: J. Bergeron (IAP), Y. Pei (IAP & PKU Beijing), N. Bavouzet (IAS)]

Correlation between variability from SNLS/CFHTLS light curves and SWIRE infrared colours of quasars.
[Main collaborators: Y. Pei (IAP & PKU Beijing), E. Aubourg (APC & Princeton), J. Bergeron (IAP), X. Liu (PKU Beijing)]

Detectability prospects of Sunyaev-Zeldovich effect from massive halos around  high-z luminous QSOs massifs 
[Main collaborators: C. De Breuck (ESO), B. Fort (IAP]

Spitzer and Herschel studies of a large AGN sample at z~1
[Main collaborators: M. Jarwitt (Oxford) et al.]

Preparation of high-z Herschel large programmes 
[Main collaborators: (S. Oliver (Sussex), J. Bock (JPL), H.,Aussel & D. Elbaz (SAp) et al.]

Thèmes de recherche
Infrared stars of the inner Galactic bulge and disk in ISOGAL and GLIMPSE II surveys

Mid-infrared Spitzer Spectroscopy of ISOGAL sources in the Galactic bulge
[Main collaborators: J. Blommaert, E. Vanhollebeke & M. Groenewegen (Leuven)]

Infrared stellar populations in ISOGAL/GLIMPSE fields of the Galactic disk and bulge
[Main collaborators: S. Ganesh (PRL Ahmedabad), M. Schultheis (Besançon)]

Mass-Loss of bulge AGB stars from ISOGAL and MSX surveys
[Main collaborator: D. Ojha (TIFR Mumbai)]

Interstellar extinction in central regions of the Galactic disk and bulge with DENIS and GLIMPSE II data
[Main collaborators: M. Schultheis (Besançon), S. Ganesh (PRL Ahmedabad), I. Glass (SAAO)]

Infrared massive young stars in central regions of the Galactic disk and bulge combining data from ISOGAL and other infrared surveys
[Main collaborator: F. Schuller (Bonn & IAP)]

Spitzer mid-IR spectroscopy of Infrared massive young stars in the nuclear bulge
[Main collaborators: F. Schuller (Bonn & IAP), J.P. Maillard (IAP)]]