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 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:
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FileName Lrecl Records Explanations
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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
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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
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Bytes Format Units Label Explanations
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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
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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.
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Byte-by-byte Description of file: table[56].dat
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Bytes Format Units Label Explanations
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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)
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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
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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)
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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 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 1987IAUS..115....1L) and Allen et al. (2004ApJS..154..363A 2004ApJS..154..363A).
Note (6): Membership and spectra types after Sacco et al. 2008
(Cat. J/A+A/488/167).
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Nomenclature note:
Objects are <[BSM2011] wNNNa> in Simbad.
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 16-May-2011