Search Publications
The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue
Pietsch, W.; Motch, C.; Brusa, M. +47 more
Aims: Pointed observations with XMM-Newton provide the basis for creating catalogues of X-ray sources detected serendipitously in each field. This paper describes the creation and characteristics of the 2XMM catalogue.
Methods: The 2XMM catalogue has been compiled from a new processing of the XMM-Newton EPIC camera data. The main features of t…
Resolving the mid-infrared cores of local Seyferts
Vignali, C.; Gilli, R.; Comastri, A. +5 more
We present new photometry of 16 local Seyferts including 6 Compton-thick sources in N-band filters around 12-µm, obtained with the VISIR instrument on the 8-m Very Large Telescope. The near-diffraction-limited imaging provides the least-contaminated core fluxes for these sources to date. Augmenting these with our previous observations and wi…
Multiple stellar populations in Magellanic Cloud clusters. I. An ordinary feature for intermediate age globulars in the LMC?
Anderson, J.; Milone, A. P.; Bedin, L. R. +1 more
Context: The discovery of multiple main sequences (MS) in the massive clusters NGC 2808 and Omega Centauri, along with multiple subgiant branches in NGC 1851 and NGC 6388 has challenged the long-held paradigm that globular clusters consist of simple stellar populations. This evolving picture has been further complicated by recent photometric studi…
Star formation and mass assembly in high redshift galaxies
Fiore, F.; Castellano, M.; Pentericci, L. +14 more
Aims: The goal of this work is to infer the star formation properties and the mass assembly process of high redshift (0.3 ≤ z < 2.5) galaxies from their IR emission using the 24 µm band of MIPS-Spitzer.
Methods: We used an updated version of the GOODS-MUSIC catalog, which has multiwavelength coverage from 0.3 to 24 µm and either…
Parallaxes and proper motions for 20 open clusters as based on the new Hipparcos catalogue
van Leeuwen, F.
Context: A new reduction of the astrometric data as produced by the Hipparcos mission has been published, claiming that the accuracies for nearly all stars brighter than magnitude Hp = 8 are improved, by up to a factor 4, compared to the original catalogue. As correlations between the underlying abscissa residuals have also been reduced by more th…
The XMM-Newton wide-field survey in the COSMOS field. The point-like X-ray source catalogue
Finoguenov, A.; Böhringer, H.; Salvato, M. +24 more
Context: The COSMOS survey is a multiwavelength survey aimed to study the evolution of galaxies, AGN and large scale structures. Within this survey XMM-COSMOS a powerful tool to detect AGN and galaxy clusters. The XMM-COSMOS is a deep X-ray survey over the full 2 deg2 of the COSMOS area. It consists of 55 XMM-Newton pointings for a tota…
A double stellar generation in the globular cluster NGC 6656 (M 22). Two stellar groups with different iron and s-process element abundances
Milone, A. P.; Marino, A. F.; Bedin, L. R. +4 more
We present a chemical abundance analysis based on high resolution UVES spectra of seventeen bright giant stars in the Globular Cluster (GC) M 22. We obtained an average iron abundance of [Fe/H] = -1.76±0.02 (internal errors only) and an α enhancement of 0.36±0.04 (internal errors only). Na and O, and Al and O follow the well known anticorrelations…
PROSAC: a submillimeter array survey of low-mass protostars. II. The mass evolution of envelopes, disks, and stars from the Class 0 through I stages
Wilner, D. J.; van Dishoeck, E. F.; Lommen, D. +5 more
Context: The key question about early protostellar evolution is how matter is accreted from the large-scale molecular cloud, through the circumstellar disk onto the central star.
Aims: We constrain the masses of the envelopes, disks, and central stars of a sample of low-mass protostars and compare the results to theoretical models for the evol…
The great observatories origins deep survey. VLT/VIMOS spectroscopy in the GOODS-south field
Daddi, E.; Popesso, P.; Cesarsky, C. +10 more
Aims: We present the first results from the VIsible Multiobject Spectrograph (VIMOS) ESO/GOODS program of spectroscopy for faint galaxies in the Chandra Deep Field South (CDF-S). This program complements the FORS2 ESO/GOODS campaign.
Methods: All 3312 spectra were obtained in service mode with VIMOS at the ESO/VLT UT3. The VIMOS LR-Blue and MR…
CAIXA: a catalogue of AGN in the XMM-Newton archive. I. Spectral analysis
Bianchi, S.; Ponti, G.; Guainazzi, M. +2 more
Aims: We present CAIXA, a Catalogue of AGN In the XMM-Newton Archive. It consists of all the radio-quiet X-ray unobscured (N_H<2×1022 cm-2) active galactic nuclei (AGN) observed by XMM-Newton in targeted observations, whose data are public as of March 2007. With its 156 sources, this is the largest catalogue of high signal…