The massive star binary fraction in young open clusters - II. NGC 6611 (Eagle Nebula) (2009)
Sana, H., Gosset, E., Evans, C. J.
Based on a set of over 100 medium- to high-resolution optical spectra collected from 2003 to 2009, we investigate the properties of the O-type star population in NGC6611 in the core of the Eagle...
Rauw, G., Nazé, Y., Lajús, E. Fernández, Lanotte, A., Solivella, G. R., Sana, H., ...
We present the results of a spectroscopic monitoring campaign devoted to three O-type stars in the Carina nebula. We derive the full SB2 orbital solution of the binary system Tr 16-112, an...
Mahy, L., Naze, Y., Rauw, G., Gosset, E., De Becker, M., Sana, H., ...
Aims. We present the results obtained from a long-term spectroscopic campaign devoted to the multiplicity of O-type stars in the young open cluster NGC2244 and in the Mon OB2 association. Methods....
Spectroscopic and photometric variability of the O9.5Vp star HD93521 (2008)
De Becker, M, Eenens, P, ...
Aims. The line profile variability and photometric variability of the O9.5Vp star HD93521 are examined in order to establish the properties of the non-radial pulsations in this star.
High resolution optical spectroscopy of Plaskett's star (2008)
Linder, N., Rauw, G., Martins, F., Sana, H., De Becker, M., Gosset, E.
We present here the analysis of an extensive set of high resolution optical spectra of Plaskett's star (HD 47129). We use a disentangling method to separate the individual spectra of each star. We...
Spectroscopic and photometric variability of the O9.5Vp star HD93521 (2008)
Rauw, G., De Becker, M., Van Winckel, H., Aerts, C., Eenens, P., Lefever, K., ...
The line profile variability and photometric variability of the O9.5 Vp star HD93521 are examined in order to establish the properties of the non-radial pulsations in this star. Fourier techniques...
The massive binary HD 152218 revisited: A new colliding wind system in NGC 6231 (2008)
Sana, H., Nazé, Y., O'Donnell, B., Rauw, G., Gosset, E.
We present the results of an optical and X-ray monitoring campaign on the short-period massive SB2 binary HD 152218. Combining our HiRes spectroscopic data with previous observations, we unveil the...
Garcet, O., Gandhi, P., Gosset, E., Sprimont, P. G., Surdej, J., Borkowski, V., ...
Our goal is to characterize AGN populations by comparing their X-ray and optical classifications. We present a sample of 99 spectroscopically identified X-ray point sources in the XMM-LSS survey...
The XMM-LSS catalogue: X-ray sources and associated optical data. Version I (2007)
Pierre, M., Chiappetti, L., Pacaud, F., Gueguen, A., Libbrecht, C., Altieri, B., ...
Following the presentation of the XMM-LSS X-ray source detection package by Pacaud et al., we provide the source lists for the first 5.5 surveyed square degrees. The catalogues pertain to the [0.5-2]...
The Struve-Sahade effect in the optical spectra of O-type binaries I. Main-sequence systems (2007)
Linder, N., Rauw, G., Sana, H., De Becker, M., Gosset, E.
We present a spectroscopic analysis of four massive binary systems that are known or are good candidates to display the Struve-Sahade effect (defined as the apparent strengthening of the secondary...
The massive star binary fraction in young open clusters I. NGC 6231 revisited (2007)
Sana, H., Gosset, E., Naze, Y., Rauw, G., Linder, N.
We present the results of a long-term high-resolution spectroscopy campaign on the O-type stars in NGC 6231. We revise the spectral classification and multiplicity of these objects and we constrain...
An XMM-Newton view of the young open cluster NGC 6231 III. Optically faint X-ray sources (2007)
Sana, H., Rauw, G., Sung, H., Gosset, E.
We discuss the properties of the X-ray sources with faint optical counterparts in the very young open cluster NGC 6231. From their positions in the H-R diagram, we find that the bulk of these objects...
The XMM-LSS Survey: A well controlled X-ray cluster sample over the D1 CFHTLS area (2007)
Pierre, M., Pacaud, F., Willis, J. P., Andreon, S., Valtchanov, I., ...
We present the XMM-LSS cluster catalogue corresponding to the CFHTLS D1 area. The list contains 13 spectroscopically confirmed, X-ray selected galaxy clusters over 0.8 deg2 to a redshift of unity and...
Constraining the fundamental parameters of the O-type binary CPD-41degr7733 (2007)
Sana, H., Rauw, G., Gosset, E.
Using a set of high-resolution spectra, we studied the physical and orbital properties of the O-type binary CPD-41 7733, located in the core of \ngc. We report the unambiguous detection of the...
Early-type stars in the core of the young open cluster Westerlund2 (2006)
Rauw, G., Manfroid, J., Gosset, E., Naze, Y., Sana, H., De Becker, M., ...
Aims. The properties of the early-type stars in the core of the Westerlund2 cluster are examined in order to establish a link between the cluster and the very massive Wolf-Rayet binary WR20a as well...
The first orbital solution for the massive colliding-wind binary HD93162 (=WR25) (2006)
Gamen, R., Gosset, E., Morrell, N., Niemela, V., Sana, H., Naze, Y., ...
Since the discovery, with the EINSTEIN satellite, of strong X-ray emission associated with HD93162 (=WR25), this object has been predicted to be a colliding-wind binary system. However,...
An XMM-Newton view of the young open cluster NGC 6231 -- II. The OB star population (2006)
Sana, H., Rauw, G., Naze, Y., Gosset, E.
In this second paper, we pursue the analysis of the 180 ks XMM-Newton campaign towards the young open cluster NGC 6231 and we focus on its rich OB star population. We present a literature-based...
The XMM-LSS Survey: A well controlled X-ray cluster sample over the D1 CFHTLS area (2006)
Pierre, M., Pacaud, F., Willis, J. P., Andreon, S., Valtchanov, I., ...
We present the XMM-LSS cluster catalogue corresponding to the CFHTLS D1 area. The list contains 13 spectroscopically confirmed, X-ray selected galaxy clusters over 0.8 deg2 to a redshift of unity and...
The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function (2006)
Pacaud, F., Pierre, M., Refregier, A., Gueguen, A., Valtchanov, I., ...
We present the X-ray pipeline developed for the purpose of the cluster search in the XMM-LSS survey. It is based on a two-stage procedure via a dedicated handling of the Poisson nature of the signal:...
Gandhi, P., Garcet, O., Disseau, L., Pacaud, F., Pierre, M., Gueguen, A., ...
We analyze X-ray sources detected over 4.2 pseudo-contiguous sq. deg. in the 0.5-2 keV and 2-10 keV bands down to fluxes of 2x10^{-15} and 8x10^{-15} erg/s/cm^2 respectively, as part of the XMM Large...
The XMM-LSS survey. Survey design and first results (2006)
Pierre, M., Valtchanov, I., Altieri, B., Andreon, S., Bolzonella, M., Bremer, M., ...
We have designed a medium deep large area X-ray survey with XMM - the XMM Large Scale Structure survey, XMM-LSS - with the scope of extending the cosmological tests attempted using ROSAT cluster...
The atypical emission-line star Hen3-209 (2006)
Naze, Y., Rauw, G., Hutsemekers, D., Gosset, E., Manfroid, J., Royer, P.
We analyse observations, spanning 15 years, dedicated to the extreme emission-line object Hen3-209. Our photometric data indicate that the luminosity of the star undergoes marked variations with a...
An XMM-Newton view of the young open cluster NGC 6231 -- I. The catalogue (2006)
Sana, H., Gosset, E., Rauw, G., Sung, H.
This paper is the first of a series dedicated to the X-ray properties of the young open cluster NGC 6231. Our data set relies on an XMM-Newton campaign of a nominal duration of 180 ks and reveals...
An exceptional X-ray view of the young open cluster NGC 6231: what XMM-Newton has taught us (2005)
Sana, H., Gosset, E., Rauw, G.
Considered as the core of the Sco OB1 association, the young open cluster NGC 6231 harbours a rich O-type star population. In 2001, the XMM-Newton satellite targeted the cluster for a nominal...
CPD-41deg7742: an unusual wind interaction (2005)
Sana, H., Gosset, E., Rauw, G., Antokhina, E., Royer, P., Manfroid, J., ...
We summarize the results of a multiwavelength observing campaign on the massive eclipsing binary CPD-41deg7742, another remarkable object in the young open cluster NGC 6231. Our campaign relies on...
The massive binary CPD-41 degrees 7742 - II. Optical light curve and X-ray observations (2005)
Sana, H, Antokhina, E, Royer, Pierre; U0037634, Manfroid, J, Gosset, E, Rauw, G, ...
In the first paper of this series, we presented a detailed high-resolution spectroscopic study of CPD - 41 degrees 7742, deriving for the first time an orbital solution for both components of the...
The massive binary CPD-41degr7742 II. Optical light curve and X-ray observations (2005)
Sana, H., Antokhina, E., Royer, P., Manfroid, J., Gosset, E., Rauw, G., ...
In the first paper of this series, we presented a detailed high-resolution spectroscopic study of CPD - 41degr7742, deriving for the first time an orbital solution for both components of the system....
The XMM-LSS Survey. First high redshift galaxy clusters: relaxed and collapsing systems (2005)
Valtchanov, I., Pierre, M., Willis, J., Santos, S. Dos, Jones, L., Andreon, S., ...
We present five newly found galaxy clusters at z>0.6 from the XMM Large-Scale Structure Survey (XMM-LSS). All five objects are extended X-ray sources in the XMM images. For three of them we have...
Willis, J. P., Pacaud, F., Valtchanov, I., Pierre, M., Ponman, T., Read, A., ...
We present X-ray and optical spectroscopic observations of twelve galaxy groups and clusters identified within the XMM Large-Scale Structure (LSS) survey. Groups and clusters are selected as extended...
The XMM-LSS survey: The XMDS/VVDS 4 sigma catalogue (2005)
Chiappetti, L., Tajer, M., Trinchieri, G., Maccagni, D., Maraschi, L., Paioro, L., ...
We present a first catalogue of X-ray sources resulting from the central area of the XMM-LSS (Large Scale Structure survey). We describe the reduction procedures and the database tools we developed...
Naze, Y., Antokhin, I. I., Sana, H., Gosset, E., Rauw, G.
We present the analysis of an extensive set of high resolution spectroscopic observations of HD93161, a visual binary with a separation of 2 arcsec. HD93161 A is a spectroscopic binary, with both...
NGC 6231: X-ray properties of the early-type star population (2004)
Sana, H., Naze, Y., Gosset, E., Rauw, G., Sung, H.
Based on a deep XMM-Newton observation of the young open cluster NGC 6231, we derive the main X-ray properties of its early-type star population. Among the 610 X-ray sources detected in the field, 42...
WR20a: a massive cornerstone binary system comprising two extreme early-type stars (2004)
Rauw, G., De Becker, M., Naze, Y., Crowther, P. A., Gosset, E., Sana, H., ...
We analyse spectroscopic observations of WR20a revealing that this star is a massive early-type binary system with a most probable orbital period of \sim 3.675 days. Our spectra indicate that both...
An XMM-Newton observation of the massive binary HD159176 (2004)
De Becker, M., Rauw, G., Pittard, J. M., Antokhin, I. I., Stevens, I. R., Gosset, E., ...
We report the analysis of an XMM-Newton observation of the close binary HD159176 (O7V + O7V). The observed L_X/L_bol ratio reveals an X-ray luminosity exceeding by a factor ~ 7 the expected value for...
A phase-resolved XMM-Newton Campaign on the Colliding Wind Binary HD 152248 (2004)
Sana, H., Stevens, I. R., Gosset, E., Rauw, G.
We report the first results of an XMM-Newton monitoring campaign of the NGC 6231 open cluster in the Sco OB1 association. This first paper focuses on the massive colliding wind binary HD 152248,...
WR 20a: A massive cornerstone binary system comprising two extreme early-type stars (2004)
Rauw, G., Becker, M. De, Naze, Y., Crowther, P.A., Gosset, E., Sana, H., ...
We analyse spectroscopic observations of WR 20a revealing that this star is a massive early-type binary system with a most probable orbital period of ~3.675 days. Our spectra indicate that both...
The XMM-LSS survey. Survey design and first results (2004)
Pierre, M., Valtchanov, I., Altieri, B., Andreon, S., Bolzonella, M., Bremer, M., ...
We have designed a medium deep large area X-ray survey with XMM - the XMM Large Scale Structure survey, XMM-LSS - with the scope of extending the cosmological tests attempted using ROSAT cluster...
The XMM-LSS Survey. First high redshift galaxy clusters: relaxed and collapsing systems (2004)
Valtchanov, I., Pierre, M., Willis, J., Santos, S. Dos, Jones, L., Andreon, S., ...
We present five newly found galaxy clusters at z>0.6 from the XMM Large-Scale Structure Survey (XMM-LSS). All five objects are extended X-ray sources in the XMM images. For three of them we have...
The XMM-LSS survey. Survey design and first results (2004)
Pierre, M., Valtchanov, I., Altieri, B., Andreon, S., Bolzonella, M., Bremer, M., ...
We have designed a medium deep large area X-ray survey with XMM - the XMM Large Scale Structure survey, XMM-LSS - with the scope of extending the cosmological tests attempted using ROSAT cluster...
The XMM-LSS Survey. First high redshift galaxy clusters: relaxed and collapsing systems (2004)
Valtchanov, I., Pierre, M., Willis, J., Santos, S. Dos, Jones, L., Andreon, S., ...
We present five newly found galaxy clusters at z>0.6 from the XMM Large-Scale Structure Survey (XMM-LSS). All five objects are extended X-ray sources in the XMM images. For three of them we have...
Y. Nazé, I. I. Antokhin, G. Rauw, E. Gosset
Abstract. Using the sensitive XMM-Newton observatory, we have observed the giant H ii region N 11 in the LMC for ∼30 ks. We have detected several large areas of soft diffuse X-ray emission along...
The XMM-LSS survey. Survey design and first results (2003)
Pierre, M., Valtchanov, I., Altieri, B., Andreon, S., Bolzonella, M., Bremer, M., ...
We have designed a medium deep large area X-ray survey with XMM - the XMM Large Scale Structure survey, XMM-LSS - with the scope of extending the cosmological tests attempted using ROSAT cluster...
The XMM-LSS Survey. First high redshift galaxy clusters: relaxed and collapsing systems (2003)
Valtchanov, I., Pierre, M., Willis, J., Santos, S. Dos, Jones, L., Andreon, S., ...
We present five newly found galaxy clusters at z>0.6 from the XMM Large-Scale Structure Survey (XMM-LSS). All five objects are extended X-ray sources in the XMM images. For three of them we have...
(DOI: will be inserted by hand later) (2003)
Y. Nazé, I. I. Antokhin, G. Rauw, E. Gosset
XMM-Newton observations of the giant Hii region N 11 in the LMC ⋆
A first detailed study of the colliding wind WR+O binary WR 30a (2001)
Gosset, E, Royer, Pierre; U0037634, Rauw, G, Manfroid, J, Vreux, JM
We present a detailed, extensive investigation of the photometric and spectroscopic behaviour of WR 30a. This star is definitely a binary system with a period around 4.6 d. We propose the value P =...
The strange case of the massive binary HD149404 (2001)
Naze, Y, Burki, G, Gosset, E, Vreux, JM
We report the analysis of an extensive set of high-resolution spectroscopic observations of the massive binary system HD 149104. W compare different techniques to measure the radial velocities of the...
Simulations of observations with the Optical Monitor of the X-ray Multi-Mirror Satellite (2000)
Royer, Pierre; U0037634, Manfroid, J, Gosset, E, Vreux, JM
This paper addresses the question of the observations to be performed with the Optical Monitor (OM) of the X-ray Multi-Mirror Satellite (XMM) under several aspects, First, we discuss XMM-OM's...
Simulations of Observations with the Optical Monitor of the X-Ray Multi-Mirror Satellite (2000)
Royer, P., Manfroid, J., Gosset, E.
This paper addresses the question of the observations to be performed with the Optical Monitor (OM) of the X-ray Multi-Mirror Satellite (XMM) under several aspects. First, we discuss XMM-OM's...
New observational results on the colliding wind WR+O binary WR 30a (1999)
Gosset, E, Royer, Pierre; U0037634, Rauw, G, Manfroid, J, Vreux, JM
Narrow-band photometry of the eclipsing WN7+O binary WR 22 (1999)
Royer, Pierre; U0037634, Rauw, G, Manfroid, J, Gosset, E, Vreux, JM
In the present paper, we discuss photometric observations of the February 1996 eclipse of the very massive WR+O binary WR 22. Our data were obtained with a set of narrow-band filters, specially...
R. Østensen, M. Remy, P. O. Lindblad, S. Refsdal, R. Stabell, J. Surdej, ...
ESO & NOT photometric monitoring of the Cloverleaf