Access to Astronomical Catalogues

← Click to display the menu
J/A+A/526/A21       Collinder 69 X-ray sources               (Barrado+, 2011)

XMM-Newton investigations of the λ Orionis star-forming region (XILO). I. The young cluster Collinder 69. Barrado D., Stelzer B., Morales-Calderon M., Bayo A., Huelamo N., Stauffer J.R., Hodgkin S., Galindo F., Verdugo E. <Astron. Astrophys., 526, A21 (2011)> =2011A&A...526A..21B
ADC_Keywords: Clusters, open ; X-ray sources ; Photometry, UBVRI ; Photometry, infrared Keywords: stars: coronae - stars: late-type - stars: solar-type - X-rays: stars - stars: pre-main sequence - open clusters and associations: individual: Collinder 69 Abstract: This is the first paper of a series devoted to the λ Orionis star-forming region, Orion's Head, from the X-ray perspective. Our final aim is to provide a comprehensive view of this complex region, which includes several distinct associations and dark clouds. We aim to uncover the population of the central, young star cluster Collinder 69, and in particular those diskless Class III objects not identified by previous surveys based on near- and mid-infrared searches, and to establish the X-ray luminosity function for the association. Description: We have combined two exposures taken with the XMM-Newton satellite with an exhaustive data set of optical, near- and mid-infrared photometry to assess the membership of the X-ray sources based on different color-color and color-magnitude diagrams, as well as other properties, such as effective temperatures, masses and bolometric luminosities derived from spectral energy distribution fitting and comparison with theoretical isochrones. The presence of circumstellar disks is discussed using mid-infrared photometry from the Spitzer Space Telescope. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 82 112 X-ray sources detected with ML>15.0 in the EPIC observation of Collinder 69, East field (C69E) table4.dat 82 52 X-ray sources detected with ML>15.0 in the EPIC observation of Collinder 69, West field (C69W) table5.dat 188 130 Optical and infrared photometry for all the 205 counterparts for 164 X-ray sources of Collinder 69 (eastern XMM-Newton pointing or Col 69E). 20091001, final version, after C69*.final.dat table6.dat 188 75 Optical and infrared photometry for all the 205 counterparts for 164 X-ray sources of Collinder 69 (western XMM-Newton pointing or Col 69W). table8.dat 81 130 Membership criteria and other information for X-ray sources of Collinder 69 East field table9.dat 81 75 Membership criteria and other information for X-ray sources of Collinder 69 West field
See also: J/AJ/118/2409 : VRI photometry of lambda Ori PMS stars (Dolan+, 1999) J/AJ/123/387 : VRI photometry of lambda Ori star-forming region (Dolan+ 2002) J/AJ/121/2124 : lambda Ori pre-main-sequence stars photometry (Dolan+, 2001) J/ApJ/610/1064 : lambda Ori substellar population (Barrado y Navascues+, 2004) J/ApJ/664/481 : Optical/IR photometry of Coll 69 (Barrado y Navascues+ 2007) J/A+A/488/167 : Low-mass stars in sigma Ori and lambda Ori (Sacco+, 2008) Byte-by-byte Description of file: table[34].dat
Bytes Format Units Label Explanations
1- 4 A4 --- Name Designation (eNNN or wNNN) 6- 10 A5 --- Inst Instrument used for the spectral analysis (see text in Sect. 2.1.) 12- 13 I2 h RAh Right ascension (J2000) 15- 16 I2 min RAm Right ascension (J2000) 18- 21 F4.1 s RAs Right ascension (J2000) 23 A1 --- DE- Declination sign (J2000) 24- 25 I2 deg DEd Declination (J2000) 27- 28 I2 arcmin DEm Declination (J2000) 30- 33 F4.1 arcsec DEs Declination (J2000) 35- 37 F3.1 arcsec ePos Position error 39- 42 F4.1 arcmin Offaxis Off-axis angle 44- 50 F7.1 --- ML Maximum likelihood 52- 55 F4.2 ct/ks CRate Source count rate 57- 60 F4.2 ct/ks e_CRate rms uncertainty on CRate 62- 66 F5.2 --- HR1 Hardness ratio 1 (HR1=(M-S)/(M+S)) (2) 68- 71 F4.2 --- e_HR1 rms uncertainty on HR1 73- 77 F5.2 --- HR2 Hardness ratio 2 (HR2=(H+M-S)/(H+M+S)) (2) 79- 82 F4.2 --- e_HR2 rms uncertainty on HR2
Note (2): where soft (S), medium (M), hard (H) and broad (B) bands are: S=0.5-1.0keV, M=1.0-2.0keV, H=2.0-7.3keV, and B=S+M+H.
Byte-by-byte Description of file: table[56].dat
Bytes Format Units Label Explanations
1- 4 A4 --- Name Designation (eNNN or wNNN) 5 A1 ---- m_Name [cwesnz] Multiplicity index on Name 7- 11 F5.2 mag Bmag ?=- Johnson B magnitude 13- 16 F4.2 mag e_Bmag ?=- rms uncertainty on Bmag 18- 22 F5.2 mag Vmag ?=- Johnson V magnitude 24- 27 F4.2 mag e_Vmag ?=- rms uncertainty on Vmag 29- 33 F5.2 mag Rcmag ?=- Cousins R magnitude 35- 38 F4.2 mag e_Rcmag ?=- rms uncertainty on Rcmag 40- 44 F5.2 mag Icmag ?=- Cousins I magnitude 46- 49 F4.2 mag e_Icmag ?=- rms uncertainty on Icmag 50 A1 --- l_Jmag Limit flag on Jmag 51- 56 F6.3 mag Jmag ?=- Johnson J magnitude 58- 62 F5.3 mag e_Jmag ?=- rms uncertainty on Jmag 63 A1 --- l_Hmag Limit flag on Hmag 64- 69 F6.3 mag Hmag ?=- Johnson H magnitude 71- 75 F5.3 mag e_Hmag ?=- rms uncertainty on Hmag 76 A1 --- l_Kmag Limit flag on Kmag 77- 82 F6.3 mag Kmag ?=- Johnson K magnitude 84- 88 F5.3 mag e_Kmag ?=- rms uncertainty on Kmag 90- 94 F5.2 mag [3.6] ?=- Spitzer/IRAC 3.6um magnitude 96- 99 F4.2 mag e_[3.6] ?=- rms uncertainty on [3.6] 101-105 F5.2 mag [4.5] ?=- Spitzer/IRAC 4.5um magnitude 107-110 F4.2 mag e_[4.5] ?=- rms uncertainty on [4.5] 112-116 F5.2 mag [5.8] ?=- Spitzer/IRAC 5.8um magnitude 118-121 F4.2 mag e_[5.8] ?=- rms uncertainty on [5.8] 123-127 F5.2 mag [8.0] ?=- Spitzer/IRAC 8.0um magnitude 129-132 F4.2 mag e_[8.0] ?=- rms uncertainty on [8.0] 134-137 F4.2 mag [24] ?=- Spitzer/MIPS 24um magnitude 139-142 F4.2 mag e_[24] ?=- rms uncertainty on [24] 144 A1 --- r_Bmag Reference for Bmag (1) 146 A1 --- r_Vmag Reference for Vmag (1) 148 A1 --- r_Rcmag Reference for Rcmag (1) 150 A1 --- r_Icmag Reference for Icmag (1) 152 A1 --- r_Jmag Reference for Jmag (1) 154 A1 --- r_Hmag Reference for Hmag (1) 156 A1 --- r_Kmag Reference for Kmag (1) 158 A1 --- r_[3.6] Reference for [3.6] (1) 160 A1 --- r_[4.5] Reference for [4.5] (1) 162 A1 --- r_[5.8] Reference for [5.8] (1) 164 A1 --- r_[8.0] Reference for [8.0] (1) 166 A1 --- r_[24] Reference for [24] (1) 168-176 F9.6 deg RAdeg Right ascension in decimal degrees (J2000) 178-188 F11.7 deg DEdeg Delcination in decimal degrees (J2000)
Note (1): References as follows: 1 = 2MASS, Cat. II/246 2 = Optical Monitor (XMM) 3 = Spitzer 4 = O2000/2005 5 = CFHT1999 6 = Barrado y Navascues et al. (2004, Cat. J/ApJ/610/1064; 2007, Cat. J/ApJ/664/481) 7 = Dolan & Mathieu (1999, Cat. J/AJ/118/2409; 2001, Cat. J/AJ/121/2124) 8 = Dolan & Mathieu (2002, Cat. J/AJ/123/387) 9 = O2000/2007
Byte-by-byte Description of file: table[89].dat
Bytes Format Units Label Explanations
1- 4 A4 --- Name Designation (eNNN or wNNN) 5 A1 ---- m_Name [cwesnz] Multiplicity index on Name 7- 15 F9.6 deg RAdeg Right ascension in decimal degrees (J2000) 17- 27 F11.7 deg DEdeg Delcination in decimal degrees (J2000) 29- 31 A3 --- QSO [Yes No pos ?] QSO flag (1) 33- 34 A2 --- Mm6 [YN? -] HR diagram membership assigment (2) 36- 40 A5 ---- Mm7 [YN?-] Color-magnitude membership assigment (3) 42 A1 ---- Mm8 [YN?-] Color-color membership assigment (3) 44- 46 A3 --- Mmb [Y? co NM noD] Final membership assigment (4) 48- 51 A4 ---- dCl [I/- ] Disk class from IRAC colors (5) 53- 55 I3 --- ByN ?=- Barrado y Navascues et al. J/ApJ/610/1064 identification number <LOri-CFHT NN> in Simbad 57- 59 I3 --- [DM99] ?=- Dolan & Mathieu (1999, J/AJ/118/2409 and 2001, J/AJ/121/2124) identification number 61- 73 A13 --- USNO-A2 USNO-A2 (I/252) designation 75- 76 A2 --- MmS [Y?N -] Sacco membership assigment (6) 78- 81 A4 --- SpT MK spectral type (6)
Note (1): "Yes" stands for objects located in the area of the diagram (I-J versus J-[3.6]) where quasars are located, after Bouy et al. (2009A&A...504..199B). See Fig. 5. Note (2): Membership based on the HR diagram, see Fig. 6. Note (3): Membership based on several color-magnitude and color-color diagrams, see Fig. 8. Note (4): Final membership assigment: Y = Probable member Y? = Possible member NM? = Possible non-member NM = Probable non-member - = noData Note (5): Disk class based on the Spitzer/IRAC color-color diagram, after Lada (1987IAUS..115....1L) and Allen et al. (2004ApJS..154..363A). Note (6): Membership and spectra types after Sacco et al. 2008 (Cat. J/A+A/488/167).
Nomenclature note: Objects are <[BSM2011] wNNNa> in Simbad. History: From electronic version of the journal
(End) Patricia Vannier [CDS] 16-May-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact