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CARINAXMM - Carina OB1 Association XMM-Newton X-Ray Point Source Catalog

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Overview

This database table contains the Carina OB1 Association XMM-Newton X-Ray Point Source Catalog. The X-ray properties of the stellar population in the Carina OB1 Association have been examined with special emphasis on early-type stars. Their spectral characteristics provide some clues to understanding the nature of X-ray formation mechanisms in the winds of single and binary early-type stars. A timing and spectral analysis of five observations with XMM-Newton is performed using various statistical tests and thermal spectral models. 235 point sources have been detected within the field of view. Several of these sources are probably pre-main sequence stars with characteristic short-term variability. Seven sources are possible background AGNs. X-ray count rates in three energy bands and the X-ray variability status are given for 557 detections of the 235 point source. Cross-identifications of X-ray sources with optical and infrared catalogues are also presented.

Catalog Bibcode

2008A&A...477..593A

References

X-ray study of early type stars in the Carina OB1 association
    Antokhin I.I., Rauw G., Vreux J.-M., van der Hucht K.A., Brown J.C.
   <Astron. Astrophys. 477, 593 (2008)>
   =2008A&A...477..593A

Provenance

This table was created by the HEASARC in April 2008 based on CDS Catalog J/A+A/477/593 files table2.dat and table3.dat.

Parameters

Source_Number
A running source number in order of increasing J2000.0 Right Ascension, which uniquely identifies the X-ray source, but not the entry in the table. Since this table contains all (557) X-ray detections of 235 sources for which the total logarithmic likelihood exceeds 10.0 in 5 separate overlapping XMM-Newton observations of this region, and many sources were detected in more than one observation, the combination of source number and data set number (data_set) uniquely specifies an entry in this table.

Name
The name of the X-ray source using the '[ARV2008]' prefix (where ARV2008 refers to Antokhin, Rauw, Vreux 2008), together with the X-ray source number, as recommended by the CDS Dictionary of Nomenclature of Celestial Objects.

Var_Status
The set-to-set variability status of the X-ray source, as follows (see Section 5.2 of the reference paper for more details):

       Uncert = Uncertain variability status
       Const  = Non-variable source
       Var    = Variable source
       Noinfo = Not sufficient data to perform the variability test
  

Data_Set
The data set number, e.g., 1, or the numbers of the data sets which were combined, e.g., 3+4+5, in which the X-ray source detection was made. The full details of the 5 data sets used in this analysis are given in Table 1 of the reference paper.

PN_Detect_Likelihood
The logarithmic likelihood L_2 of the detection of the X-ray source for the EPIC PN instrument in the specified data set. L_2 obeys the simple relationship L_2 = - ln p, where p is the probability for a random Poissonian fluctuation to have caused the observed source counts.

PN_Rate
The total count rate of the X-ray source in the specified data set in the whole PN energy band (0.4-10.0 keV), in ct/s.

PN_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

PN_SB_Rate
The count rate of the X-ray source in the specified data set in the soft PN energy band (0.4-1.0 keV), in ct/s.

PN_SB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

PN_MB_Rate
The count rate of the X-ray source in the specified data set in the medium PN energy band (1.0-2.5 keV), in ct/s.

PN_MB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

PN_HB_Rate
The count rate of the X-ray source in the specified data set in the hard PN energy band (2.5-10.0 keV), in ct/s.

PN_HB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M1_Detect_Likelihood
The logarithmic likelihood L_2 of the detection of the X-ray source for the EPIC MOS1 instrument in the specified data set. L_2 obeys the simple relationship L_2 = - ln p, where p is the probability for a random Poissonian fluctuation to have caused the observed source counts.

M1_Rate
The total count rate of the X-ray source in the specified data set in the whole MOS1 energy band (0.4-10.0 keV), in ct/s.

M1_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M1_SB_Rate
The count rate of the X-ray source in the specified data set in the soft MOS1 energy band (0.4-1.0 keV), in ct/s.

M1_SB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M1_MB_Rate
The count rate of the X-ray source in the specified data set in the medium MOS1 energy band (1.0-2.5 keV), in ct/s.

M1_MB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M1_HB_Rate
The count rate of the X-ray source in the specified data set in the hard MOS1 energy band (2.5-10.0 keV), in ct/s.

M1_HB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M2_Detect_Likelihood
The logarithmic likelihood L_2 of the detection of the X-ray source for the EPIC MOS2 instrument in the specified data set. L_2 obeys the simple relationship L_2 = - ln p, where p is the probability for a random Poissonian fluctuation to have caused the observed source counts.

M2_Rate
The total count rate of the X-ray source in the specified data set in the whole MOS2 energy band (0.4-10.0 keV), in ct/s.

M2_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M2_SB_Rate
The count rate of the X-ray source in the specified data set in the soft MOS2 energy band (0.4-1.0 keV), in ct/s.

M2_SB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M2_MB_Rate
The count rate of the X-ray source in the specified data set in the medium MOS2 energy band (1.0-2.5 keV), in ct/s

M2_MB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

M2_HB_Rate
The count rate of the X-ray source in the specified data set in the hard MOS2 energy band (2.5-10.0 keV), in ct/s.

M2_HB_Rate_Error
The RMS uncertainty in the associated count rate parameter, in ct/s.

Alt_Name
The alternative X-ray source designation using the standard J2000.0 position-based naming convention for serendipitous XMM-Newton sources, e.g., 'XMMU J104236.8-594357', as registered with the CDS Dictionary of Nomenclature of Celestial Objects.

RA
The Right Ascension of the X-ray source in the selected equinox. This was given in J2000.0 coordinates to a precision of 0.01 seconds of time in the original table. The quoted position is always of the XMM-Newton source, even if a Chandra counterpart to the source has been detected.

Dec
The Declination of the X-ray source in the selected equinox. This was given in J2000.0 coordinates to a precision of 0.1 arcseconds in the original table. The quoted position is always of the XMM-Newton source, even if a Chandra counterpart to the source has been detected.

LII
The Galactic Longitude of the X-ray source.

BII
The Galactic Latitude of the X-ray source.

AC03_Source_Number
The X-ray source number of the corresponding source in the Albacete-Colombo et al. (2003, ADS bibcode 2003MNRAS.346..704A) Catalog.

Ev03_Source_Number
The X-ray source number of the corresponding source in the Evans et al. (2003, CDS Cat. <J/ApJ/589/509>) Catalog.

Num_2MASS_Ctrparts
The number of 2MASS counterparts within 4.0 arcseconds radius of the X-ray source position.

XMM_2MASS_Offset
The angular separation between the X-ray source and infrared counterpart psoitions, in arcseconds.

Jmag
The J Band magnitude from the 2MASS Catalog of the infrared counterpart to the X-ray source.

Hmag
The H Band Magnitude from the 2MASS Catalog of the infrared counterpart to the X-ray source.

Ks_Mag
The K_S_ Band Magnitude from the 2MASS Catalog of the infrared counterpart to the X-ray source.

Vmag
The V magnitude of the optical counterpart to the X-ray source.

BV_Color
The B-V color of the optical counterpart to the X-ray source.

UB_Color
The U-B color of the optical counterpart to the X-ray source.

Optical_Name
The name of the optical counterpart to the X-ray source. The full Simbad nomenclature for the optical names used here is:

       Tr 16 NNN = Cl* Trumpler 16 NNN in Simbad
          MJ NNN = Cl* Trumpler 16 MJ NNN in Simbad
    DETCW-14 NNN = DETWC Tr 14 JHHMMSS.s-DDMMSS in Simbad
  
where DETWC refers to Degioia-Eastwood et al. (2001, CDS Cat. <J/ApJ/549/578>).

Spect_Type
The MK spectral type of the optical counterpart to the X-ray source.

Ref_Photometry
This parameter gives the code for the reference from various optical photometric catalogs, as follows:

      Cud   = Cudworth et al., 1993, CDS Cat. <J/AJ/105/1822>
      DETWC = Degioia-Eastwood et al., 2001, CDS Cat. <J/ApJ/549/578>
      MJ    = Massey & Johnson, 1993, CDS Cat. <J/AJ/105/980>
  

Prob_Membership
The membership probability of the optical counterpart to the X-ray source, taken from the proper motion study of Cudworth et al. (1993, CDS Cat. <J/AJ/105/1822>)


Contact Person

Questions regarding the CARINAXMM database table can be addressed to the HEASARC User Hotline.

Page Author: Browse Software Development Team
Last Modified: 9-Apr-2008