A strong excess in the 20-100 keV emission of NGC 1365 (2009)
Risaliti, G., Braito, V., Laparola, V., Bianchi, S., Elvis, M., Fabbiano, G., ...
We present a new Suzaku observation of the obscured AGN in NGC 1365, revealing an unexpected excess of X-rays above 20 keV of at least a factor ~2 with respect to the extrapolation of the...
Chandra detection of a parsec scale wind in the Broad Line Radio Galaxy 3C 382 (2009)
Reeves, J. N., Sambruna, R. M., Braito, V., Eracleous, M.
We present unambiguous evidence for a parsec scale wind in the Broad-Line Radio Galaxy (BLRG) 3C 382, the first radio-loud AGN, with $R_{\rm L} = \log_{10}(f_{\rm 5GHz}/f_{4400})>1$, whereby an...
Short-term variability and PSD analysis of the radio-loud AGN 3C 390.3 (2009)
Gliozzi, M., Papadakis, I. E., Eracleous, M., Sambruna, R. M., Ballantyne, D. R., Braito, V., ...
We investigate the short-term variability properties and the power spectral density (PSD) of the Broad-Line Radio Galaxy (BLRG) 3C 390.3 using observations made by XMM, RXTE, and Suzaku on several...
Structure of the accretion flow in broad-line radio galaxies: the case of 3C 390.3 (2009)
Sambruna, R. M., Reeves, J. N., Braito, V., Lewis, K. T., Eracleous, M., Gliozzi, M., ...
We present XMM-Newton and Suzaku observations of the broad-line radio galaxy 3C 390.3 acquired in 2004 October and 2006 December, respectively. An archival Swift BAT spectrum from the 9 month survey...
Swift observations of GW Lib: a unique insight into a rare outburst (2009)
Byckling, K., Osborne, J. P., Wheatley, P. J., Wynn, G. A., Beardmore, A., Braito, V., ...
The second known outburst of the WZ Sge type dwarf nova GW Lib was observed in April 2007. We have obtained unique multiwavelength data of this outburst which lasted ~ 26 days. AAVSO observers...
Structure of the Accretion Flow in Broad-Line Radio Galaxies: The Case of 3C390.3 (2009)
Sambruna, R. M., Reeves, J. N., Braito, V., Lewis, K. T., Eracleous, M., Gliozzi, M., ...
We present XMM and Suzaku observations of the Broad-Line Radio Galaxy (BLRG) 3C390.3. The Fe Ka line has a width FWHM ~ 8,800 km/s, consistent within a factor two with the width of the double-peaked...
A Compton-thick Wind in the High Luminosity Quasar, PDS 456 (2009)
Reeves, J. N., O'Brien, P. T., Braito, V., Behar, E., Miller, L., Turner, T. J., ...
PDS 456 is a nearby (z=0.184), luminous (L_bol ~10^47 erg/s) type I quasar. A deep 190 ks Suzaku observation in February 2007 revealed the complex, broad band X-ray spectrum of PDS 456. The Suzaku...
A Suzaku observation of the ULIRG IRAS19254-7245: disclosing the AGN component (2009)
Braito, V., Reeves, J. N., Della Ceca, R., Ptak, A., Risaliti, G., Yaqoob, T.
We discuss here a long Suzaku observation of IRAS 19254-7245 (also known as the Superantennae), one of the brightest and well studied Ultra Luminous Infrared Galaxies in the local Universe. This long...
Variable partial covering and a relativistic iron line in NGC 1365 (2009)
Risaliti, G., Miniutti, G., Fabbiano, G., Salvati, M., Baldi, A., Braito, V., ...
We present a complete analysis of the hard X-ray (2-10 keV) properties of the Seyfert galaxy NGC 1365, based on a 60 ks XMM-Newton observation performed in January 2004. The two main results are: 1)...
The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source (2008)
Risaliti, G., Salvati, M., Elvis, M., Fabbiano, G., Baldi, A., Bianchi, S., ...
We present an analysis of the extreme obscuration variability observed during an XMM-Newton 5-days continuous monitoring of the AGN in NGC 1365. The source was in a reflection-dominated state in the...
A Comprehensive X-ray Spectral Analysis of the Seyfert 1.5 NGC 3227 (2008)
Markowitz, A., Reeves, J. N., George, I. M., Braito, V., Smith, R., Vaughan, S., ...
We present results of a 100 ks XMM observation of the Seyfert 1.5 NGC 3227. Our best-fit broadband model to the pn spectrum consists of a moderately flat (photon index 1.57) hard X-ray power-law...
3-5 micron spectroscopy of obscured AGNs in ULIRGs (2007)
Sani, E., Risaliti, G., Salvati, M., Maiolino, R., Marconi, A., Berta, S., ...
We present the results of infrared L-band (3-4 micron) and M-band (4-5 micron) VLT-ISAAC spectroscopy of five bright Ultraluminous InfraRed Galaxies (ULIRGs) hosting an AGN. From our analysis we...
Relativistic Iron K Emission and absorption in the Seyfert 1.9 galaxy MCG-5-23-16 (2007)
Braito, V., Reeves, J. N., Dewangan, G. C., George, I., Griffiths, R. E., Markowitz, A., ...
We present the results of the simultaneous deep XMM and Chandra observations of the bright Seyfert 1.9 galaxy MCG-5-23-16, which is thought to have one of the best known examples of a...
The remarkable X-ray spectrum of the Broad-Line Radio Galaxy 3C 445 (2007)
Sambruna, R. M., Reeves, J. N., Braito, V.
We present the results of the analysis of an archival 15 ks XMM-Newton observation of the nearby (z=0.057) radio-loud source 3C445, optically classified as a Broad-Line Radio Galaxy. While the RGS...
The stellar content of the XMM-Newton Bright Serendipitous Survey (2006)
Lopez-Santiago, J., Micela, G., Sciortino, S., Favata, F., Caccianiga, A., Della Ceca, R., ...
Context: The comparison of observed counts in a given sky direction with predictions by Galactic models yields constraints to the spatial distribution and the stellar birthrate of young stellar...
Extremely compact massive galaxies at z~1.4 (2006)
Trujillo, I., Feulner, G., Goranova, Y., Hopp, U., Longhetti, M., Saracco, P., ...
The optical rest-frame sizes of 10 of the most massive (~5x10^{11}h_{70}^{-2}M_sun) galaxies found in the near-infrared MUNICS survey at 1.2
Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a (2006)
Markowitz, A., Reeves, J., Braito, V.
We present a detailed analysis of the XMM-Newton long-look of the Seyfert galaxy IC 4329a. The Fe K bandpass is dominated by two resolved peaks at 6.4 keV and 7.0 keV, consistent with neutral or...
Low Redshift BAL QSOs in the Eigenvector 1 Context (2006)
P. Marziani, D. Dultzin Hacyan, C. Bongardo, J. W. Sulentic, V. Braito, M. Calvani, ...
Low Redshift BAL QSOs in the Eigenvector 1 Context
An X-ray bright ERO hosting a type 2 QSO (2006)
Severgnini, P., Caccianiga, A., Braito, V., Della Ceca, R., Maccacaro, T., Akiyama, M., ...
We present the XMM-Newton and the optical-VLT spectra along with the optical and the near-infrared photometric data of one of the brightest X-ray (F(2-10 keV)~1e-13 erg/s cm^2) extremely red objects...
The iron emission line complex of MCG-5-23-16: the long XMM-Newton look (2006)
Braito, V., Reeves, J. N., Dewangan, G., George, I., Griffiths, R., Markowitz, A., ...
Extremely compact massive galaxies at z ~ 1.4 (2006)
Trujillo, I., Feulner, G., Goranova, Y., Hopp, U., Longhetti, M., Saracco, P., ...
Low Redshift BAL QSOs in the Eigenvector 1 Context (2006)
Bongardo , C., Braito , V., Calvani , M., Dultzin Hacyan, D., Marziani , P., Sulentic , J. W., ...
We attempt to characterize the geometry of Broad Absorption Line (BAL) QSOs by studying a low redshift sample of 12 sources. We find that the majority of these sources are Population A quasars as...
The double AGN in NGC 6240 revealed through 3-5 micron spectroscopy (2005)
Risaliti, G., Sani, E., Maiolino, R., Marconi, A., Berta, S., Braito, V., ...
We present 3-5 micron spectroscopy of the interacting system NGC 6240, showing the presence of two active galactic nuclei. The brightest (southern) nucleus shows up with a starburst-like emission,...
Low Redshift BAL QSOs in the Eigenvector 1 Context (2005)
Sulentic, J. W., Dultzin-Hacyan, D., Marziani, P., Bongardo, C., Braito, V., Calvani, M., ...
We attempt to characterize the geometry of Broad Absorption Line (BAL) QSOs by studying a low redshift sample of 12 sources. We find that the majority of these sources are Population A quasars as...
The Bright Side of the Hard X-ray Sky: The XMM-Newton Bright Survey (2005)
Della Ceca, R., Caccianiga, A., Severgnini, P., Maccacaro, T., Cocchia, F., Braito, V.
We discuss here the main goals and some interesting results of the "XMM-Newton Bright Serendipitous Survey", a research program conducted by the XMM-Newton Survey Science Center in two complementary...
Unveiling the nature of Ultraluminous Infrared Galaxies with 3-4 micron spectroscopy (2005)
Risaliti, G., Maiolino, R., Marconi, A., Sani, E., Berta, S., Braito, V., ...
We present the results of L-band spectroscopical observations of local bright ULIRGs, performed with ISAAC at the VLT. We discuss the L-band spectral features of seven single sources, and the...
Dating the stellar population in massive early-type galaxies at $z\sim$1.5 (2005)
Longhetti, M., Saracco, P., Severgnini, P., Della Ceca, R., Braito, V., Mannucci, F., ...
We present the analysis of 10 massive early-type galaxies at $z\sim1.5$. They have been identified by means of a near-IR low resolution spectroscopic follow-up of a complete sample of 36 bright (K'...
The XMM-Newton view of the relativistic spectral features in AXJ0447-0627 (2005)
Della Ceca, R., Ballo, L., Braito, V., Maccacaro, T.
The XMM-Newton observation of the optically Type 1 AGN AXJ0447-0627 (z=0.214) unambiguously reveals a complex, bright and prominent set of lines in the 4-8 keV rest frame energy range. Although, from...
Braito, V., Maccacaro, T., Caccianiga, A., Severgnini, P., Della Ceca, R.
We present the first optical validation of an X-ray Line-Emitting Object (XLEO) discovered in the XMM-Newton observation of the Chandra Deep Field South. The object is an AGN at z_x ~ 0.66. An...
XMM-Newton spectroscopy of an X-ray selected sample of RL AGNs (2005)
Galbiati, E., Caccianiga, A., Maccacaro, T., Braito, V., Della Ceca, R., Severgnini, P., ...
Looking for obscured QSOs in the X-ray emitting ERO population (2005)
Severgnini, P., Della Ceca, R., Braito, V., Saracco, P., Longhetti, M., Bender, R., ...
The TESIS project: are type 2 QSO hidden in x-ray emitting EROs? (2005)
Severgnini, P., Della Ceca, R., Braito, V., Saracco, P., Longhetti, M., Bender, R., ...
The TESIS project: revealing massive early-type galaxies at z > 1 (2005)
Saracco, P., Longhetti, M., Severgnini, P., Della Ceca, R., Braito, V., Bender, R., ...
Dating the stellar population in massive early-type galaxies at z~ 1.5 (2005)
Longhetti, M., Saracco, P., Severgnini, P., Della Ceca, R., Braito, V., Mannucci, F., ...
The density of very massive evolved galaxies to z= 1.7 (2005)
Saracco, P., Longhetti, M., Severgnini, P., Della Ceca, R., Braito, V., Mannucci, F., ...
The density of very massive evolved galaxies to z~1.7 (2004)
Saracco, P., Longhetti, M., Severgnini, P., Della Ceca, R., Braito, V., Mannucci, F., ...
We spectroscopically identified 7 massive evolved galaxies with magnitudes 17.8
X-ray Line Emitting Objects in XMM-Newton Observations: the Tip of the Iceberg (2004)
Maccacaro, T., Braito, V., Della Ceca, R., Severgnini, P., Caccianiga, A.
We present preliminary results from a novel search for X-ray Line Emitting Objects (XLEOs) in XMM-Newton images. Three sources have been detected in a test-run analysis of 13 XMM-Newton observations....
XMM-Newton spectroscopy of an X-ray selected sample of RL AGNs (2004)
Galbiati, E., Caccianiga, A., Maccacaro, T., Braito, V., Della Ceca, R., Severgnini, P., ...
This paper presents the X-ray spectroscopy of an X-ray selected sample of 25 radio-loud (RL) AGNs extracted from the XBSS sample. The main goal is to study the origin of the X-ray spectral...
Looking for obscured QSOs in the X-ray emitting ERO population (2004)
Severgnini, P., Della Ceca, R., Braito, V., Saracco, P., Longhetti, M., Bender, R., ...
We present XMM-Newton data centered on one of the MUNICS Near Infrared Cluster Survey fields (S2F1) and we discuss the X-ray properties of the 6 X-ray emitting EROs found. For one of them we have...
Foschini, L., Braito, V., Palumbo, G. G. C., Ponti, G., Dadina, M., Della Ceca, R., ...
The Early Data Release of the Sloan Digital Sky Survey (SDSS) contains 150 Narrow-Line Seyfert 1 (NLS1) galaxies, most of them previously unknown. We present here the study of the X-ray emission from...
Exploring the X-ray Sky with the XMM-Newton Bright Serendipitous Survey (2004)
Della Ceca, R., Maccacaro, T., Caccianiga, A., Severgnini, P., Braito, V., Barcons, X., ...
ABRIDGED. We present "The XMM-Newton Bright Serendipitous Survey", two flux-limited samples with flux limit fx ~7E-14 cgs in the 0.5-4.5 keV (BSS) and 4.5-7.5 keV (HBSS) energy band, respectively....
The broad-band properties of the XMM-Newton Bright Serendipitous Sources (2004)
Della Ceca, R., Maccacaro, T., Caccianiga, A., Severgnini, P., Braito, V.
We present here "The XMM-Newton Bright Serendipitous Survey", a survey program conducted by the XMM-Newton Survey Science Center. In particular we discuss the main goals of this project, we present...
VLT/ISAAC Spectra of the H-beta Region in Intermediate Redshift Quasars (2004)
Sulentic, J. W., Stirpe, G. M., Marziani, P., Zamanov, R., Calvani, M., Braito, V.
We present high S/N spectra of the H-beta region in 17 intermediate redshift (0.85 le z le 2.5) quasars. The spectra represent first results of our campaign to test the redshift/luminosity robustness...
2-10 keV luminosity of high-mass binaries as a gauge of ongoing star-formation rate (2004)
Persic, M., Rephaeli, Y., Braito, V., Cappi, M., Della Ceca, R., Franceschini, A., ...
Based on recent work on spectral decomposition of the emission of star-forming galaxies, we assess whether the integrated 2-10 keV emission from high-mass X-ray binaries (HMXBs), L_{2-10}^{HMXB}, can...
The XMM-Newton and BeppoSAX view of the Ultra Luminous Infrared Galaxy MKN 231 (2004)
Braito, V., Della Ceca, R., Piconcelli, E., Severgnini, P., Bassani, L., Cappi, M., ...
We discuss XMM-Newton and BeppoSAX observations of MKN 231, the lowest-redshift Broad Absorption Line (BAL) QSO known so far and one of the best-studied Ultra Luminous Infrared Galaxies. By combining...
An X-ray review of MS1054-0321: hot or not? (2004)
Gioia, I. M., Braito, V., Branchesi, M., Della Ceca, R., Maccacaro, T., ...
XMM-Newton observations are presented for the z=0.83 cluster of galaxies MS1054-0321, the highest redshift cluster in the Einstein Extended Medium Sensitivity Survey (EMSS). The temperature inferred...
Exploring the X-ray sky with the XMM-Newton bright serendipitous survey (2004)
Della Ceca, R., Maccacaro, T., Caccianiga, A., Severgnini, P., Braito, V., Barcons, X., ...
Exploring the X-ray sky with the XMM-Newton bright serendipitous survey (2004)
Della Ceca, R., Maccacaro, T., Caccianiga, A., Severgnini, P., Braito, V., Barcons, X., ...
Exploring the X-ray sky with the XMM Newton bright serendipitous survey (2004)
Della Ceca, R., Maccacaro, T., Caccianiga, A., Severgnini, P., Braito, V., Barcons, X., ...
First ten authors only listed.
The XMM-Newton HBS28 sample: studying the obscuration in hard X-ray selected AGNs (2003)
Caccianiga, A., Severgnini, P., Braito, V., Della Ceca, R., Maccacaro, T., Barcons, X., ...
This paper presents the analysis of a statistically complete sample of 28 serendipitous X-ray sources selected in 82 pointed XMM-Newton fields down to a count-rate of 0.002 counts s^-1(4.5-7.5 keV...
The TESIS project: revealing massive early-type galaxies at z>1 (2003)
Saracco, P., Longhetti, M., Severgnini, P., Della Ceca, R., Braito, V., Bender, R., ...
We present the preliminary results of an on-going near-IR low resolution spectroscopic follow-up of a complete sample of 30 bright (K'
The TESIS project: Are type 2 QSO hidden in X-ray emitting EROs? (2003)
Severgnini, P., Della Ceca, R., Braito, V., Saracco, P., Longhetti, M., Bender, R., ...
Here we present the results obtained from the analysis of 75 ksec of XMM-Newton observations of a sample of EROs selected from one MUNICS field (K'
The TNG EROs Spectroscopic Identification Survey (TESIS) (2003)
Saracco, P., Longhetti, M., Della Ceca, R., Severgnini, P., Braito, V., Bender, R., ...
We are carrying on a near-IR very low resolution spectroscopic follow-up in parallel with XMM-Newton observations of a complete sample of ~30 bright (K'
Revealing the active galactic nucleus in the superantennae through L-band spectroscopy (2003)
Risaliti, G., Maiolino, R., Marconi, A., Bassani, L., Berta, S., Braito, V., ...
We present an L-band spectrum of the Ultraluminous Infrared Galaxy IRAS 19254-7245 (the Superantennae), obtained with VLT-ISAAC. The high signal to noise ratio allows a study of the main spectral...
The Ultra Luminous Infrared Galaxy MKN 231: New clues from BeppoSAX and XMM-Newton (2003)
Braito, V., Della Ceca, R., Piconcelli, E., Severgnini, P., Bassani, L., Cappi, M., ...
We present BeppoSAX and XMM-Newton observations of MKN 231. These observations and in particular the BeppoSAX PDS data allowed us to unveil, for the first time, the highly absorbed (N$_H\sim...
Arp 299: a second merging system with two active nuclei? (2003)
Ballo, L., Braito, V., Della Ceca, R., Maraschi, L., Tavecchio, F., Dadina, M.
Recent BeppoSAX observations of Arp 299, a powerful far-IR merging starburst system composed of IC 694 and NGC 3690, clearly unveiled for the first time in this system the presence of a strongly...
A Hard Medium Survey with ASCA. IV: the Radio-Loud Type 2 QSO AXJ0843+294 2 (2003)
Della Ceca, R., Braito, V., Beckmann, V., Caccianiga, A., Cagnoni, I., Gioia, I. M., ...
We discuss the X-ray, optical and radio properties of AX J0843+2942, a high luminosity Type 2 AGN found in the ASCA Hard Serendipitous Survey. The X-ray spectrum is best described by an absorbed...
An XMM-Newton hard X-ray survey of ULIRGs (2003)
Franceschini, A., Braito, V., Persic, M., Della Ceca, R., Bassani, L., Cappi, M., ...
XMM-Newton observations of 10 ULIRGs are reported. The aim is to investigate in hard X-rays a complete ULIRG sample selected from the bright IRAS 60$\mu$m catalogue. All sources are detected in...
XMM-Newton observations expose AGN in apparently normal galaxies (2003)
Severgnini, P., Caccianiga, A., Braito, V., Della Ceca, R., Maccacaro, T., Wolter, A., ...
We have performed a detailed analysis of 3 optically normal galaxies extracted from the XMM Bright Serendipitous Source Sample. Thanks to the good statistics of the XMM-Newton data, we have unveiled...
XMM-Newton observations reveal AGN in apparently normal galaxies (2003)
Severgnini, P., Caccianiga, A., Braito, V., Della Ceca, R., Maccacaro, T., Wolter, A., ...
XMM-Newton observations reveal AGN in apparently normal galaxies (2003)
Severgnini, P., Caccianiga, A., Braito, V., Della Ceca, R., Maccacaro, T., Wolter, A., ...
XMM-Newton observations of ULIRGs I: A Compton-thick AGN in IRAS19254-7245 (2002)
Braito, V., Franceschini, A., Della Ceca, R., Severgnini, P ., Bassani, L., Cappi, M., ...
We present the XMM-Newton observation of the merging system IRAS 19254-7245, also known as The Superantennae, whose southern nucleus is classified as a Seyfert 2 galaxy. The XMM-Newton data have...
Origin of the X-Ray Background and AGN Unification: New Perspectives (2002)
Franceschini, A., Braito, V., Fadda, D.
We critically review the basic assumptions of the standard model for the synthesis of the XRB in the light of new data from ultradeep surveys by Chandra and XMM, resolving major parts of it....
An XMM-Newton Survey of Ultra-Luminous Infrared Galaxies (2002)
Braito, V., Franceschini, A., Della Ceca, R., Bassani, L., Cappi, M., Malaguti, P., ...
We present preliminary results of XMM-Newton observations of 5 Ultra-luminous Infrared Galaxies (ULIRGs), part of a mini-survey program dedicated to 10 ULIRGs selected from the bright IRAS sample....
The ASCA Hard Serendipitous Survey (2000)
Della Ceca, R., Braito, V., Cagnoni, I., Maccacaro, T.
We summarize here some of the main results we have reached so far in the ASCA Hard Serendipitous Survey, a survey program conducted in the 2-10 keV energy band. In particular we will discuss the...
The ASCA HSS: Looking for Type 2 AGN (2000)
Della Ceca, R., Braito, V., Beckmann, V., Cagnoni, I., Maccacaro, T.
We will briefly discuss the X-ray spectral properties of the objects in the ASCA Hard Serendipitous Survey (HSS) sample and its present AGN contents. We also present X-ray spectroscopy of two Type 2...
A Hard Medium Survey with ASCA. III.: a Type 2 AGN revealed from X-ray Spectroscopy (2000)
Della Ceca, R., Maccacaro, T., Rosati, P., Braito, V.
In this paper we report the discovery of an hard X-ray selected Type 2 Seyfert galaxy and we present and discuss its X-ray and optical spectrum together with the radio to X-ray energy distribution....
The ASCA Hard Serendipitous Survey (HSS): a Progress Update (1999)
Della Ceca, R., Braito, V., Cagnoni, I., Maccacaro, T.
We present here a status update on the ASCA Hard Serendipitous Survey (HSS), a survey program conducted in the 2-10 keV energy band. In particular we discuss the number-flux relationship, the 2-10...
Della Ceca, R., Castelli, G., Braito, V., Cagnoni, I., Maccacaro, T.
A complete sample of 60 serendipitous hard X-ray sources with flux in the range $\sim 1 \times 10^{-13}$ \ecs to $\sim 4 \times 10^{-12}$ \ecs (2 - 10 keV), detected in 87 ASCA GIS2 images, was...