J/ApJS/194/5 Carina OB stars in the CCCP catalog (Gagne+, 2011)
Carina OB stars: X-ray signatures of wind shocks and magnetic fields.
Gagne M., Fehon G., Savoy M.R., Cohen D.H., Townsley L.K., Broos P.S.,
Povich M.S., Corcoran M.F., Walborn N.R., Evans N.R., Moffat A.F.J.,
Naze Y., Oskinova L.M.
<Astrophys. J. Suppl. Ser., 194, 5 (2011)>
=2011ApJS..194....5G 2011ApJS..194....5G
ADC_Keywords: X-ray sources ; Stars, OB ; Stars, early-type ; Nebulae ;
Clusters, open ; H II regions
Keywords: open clusters and associations: individual (Cl Bochum 10,
Cl Bochum 11, Cl Collinder 228, Cl Trumpler 14, Cl Trumpler 15,
Cl Trumpler 16) - stars: early-type -
stars: individual (HD 93250, HD 93129A, HD 93403, HD 93205, HD 93343,
QZ Car, SS73 24, FO 15, Cl Trumpler 16 22, CPD-59 2610, HD 93501) -
X-rays: stars
Abstract:
The Chandra Carina Complex contains 200 known O- and B-type stars. The
Chandra survey detected 68 of the 70 O stars and 61 of 127 known B0-B3
stars. We have assembled a publicly available optical/X-ray database
to identify OB stars that depart from the canonical LX/Lbol relation
or whose average X-ray temperatures exceed 1keV. Among the single O
stars with high kT we identify two candidate magnetically confined
wind shock sources: Tr16-22, O8.5 V, and LS 1865, O8.5 V((f)). The
O4 III(fc) star HD 93250 exhibits strong, hard, variable X-rays,
suggesting that it may be a massive binary with a period of >30d.
The visual O2 If* binary HD 93129A shows soft 0.6keV and hard 1.9keV
emission components, suggesting embedded wind shocks close to the
O2 If* Aa primary and colliding wind shocks between Aa and Ab. Of the
11 known O-type spectroscopic binaries, the long orbital-period
systems HD 93343, HD 93403, and QZ Car have higher shock temperatures
than short-period systems such as HD 93205 and FO 15. Although the
X-rays from most B stars may be produced in the coronae of unseen,
low-mass pre-main-sequence companions, a dozen B stars with high LX
cannot be explained by a distribution of unseen companions. One of
these, SS73 24 in the Treasure Chest cluster, is a new candidate
Herbig Be star.
Description:
This table contains 64 optical, infrared, and x-ray photometric and
spectral parameters for the 200 O- and early-B stars with determined
spectral types in the Chandra Carina Complex Project (Townsley+,
2011ApJS..194....1G 2011ApJS..194....1G). Some X-ray parameters are from Global X-ray
properties of the O and B stars in Carina (Naze et al., 2011, Cat.
J/ApJS/194/7). Other optical/infrared parameters are from Candidate
X-ray-emitting OB stars in the Carina nebula identified via infrared
spectral energy distributions (Povich+, 2011ApJS..194....6G 2011ApJS..194....6G). For a
complete description of column label see A catalog of Chandra X-ray
sources in the Carina nebula (Broos+, 2011, Cat. J/ApJS/194/2) and
Carina OB stars: X-ray signatures of wind shocks and magnetic fields
(This paper).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ob200_1.dat 635 200 OB star optical and X-ray parameters
refs.dat 80 19 References
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See also:
B/chandra : The Chandra Archive Log (CXC, 1999-)
J/ApJS/194/2 : Chandra Carina Complex Project (CCCP) catalog (Broos+, 2011)
J/ApJS/194/6 : Candidate X-ray emitting OB stars (Povich et al., 2011)
J/ApJS/194/7 : Global X-ray properties of O and B stars in Carina (Naze+, 2011)
Byte-by-byte Description of file: ob200_1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- CXOGNC ACIS Extract cat. name (HHMMSS.ss+DDMMSS.s)
20- 30 A11 --- OName Preferred designation
32- 33 I2 h RAh Right ascension ICRS (ep=J2000), from Simbad
35- 36 I2 min RAm Right ascension ICRS (ep=J2000), from Simbad
38- 42 F5.2 s RAs Right ascension ICRS (ep=J2000), from Simbad
44 A1 --- DE- Declination sign ICRS (ep=J2000), from Simbad
45- 46 I2 deg DEd Declination ICRS (ep=J2000), from Simbad
48- 49 I2 arcmin DEm Declination ICRS (ep=J2000), from Simbad
51- 54 F4.1 arcsec DEs Declination ICRS (ep=J2000), from Simbad
56- 64 F9.5 deg RAXdeg ACIS Extract right ascension (J2000)
66- 74 F9.5 deg DEXdeg ACIS Extract declination (J2000)
76-104 A29 --- SpType Spectral Type
106 I1 --- bin [0/1] Binarity Flag
108-109 I2 --- r_SpType ? Spectral Type Reference, in refs.dat file
111-112 I2 --- r_Vmag ? UBV Reference, in refs.dat file
114-119 F6.3 mag Vmag Johnson V magnitude
121-126 F6.3 mag U-B ?=- Johnson U-B colour index
128-133 F6.3 mag B-V Johnson B-V colour index
135-140 F6.3 mag E(B-V) ?=- Reddening, E(B-V)
142-147 F6.3 mag BC ?=- Bolometric correction: Martins & Plez,
2006, Cat. J/A+A/457/637
149-155 F7.5 [Lsun] logLbol Preferred bolometric luminosity
157-164 F8.6 mag AV Preferred absorption in V band
166-172 F7.5 [K] logT Effective temperature using Martins et al.,
2005A&A...436.1049M 2005A&A...436.1049M
174 I1 --- XD [0/1] ACIS detection flag
176-183 F8.6 --- Pno.t ?=- AE (ACIS Extraction) no-source
probability in 0.5-8keV band (1)
185-192 F8.6 --- Pvar ?=- KS variability, multiple ObsIds
194-205 E12.6 s ExpTime ?=- Total exposure time, merged observations
207-215 F9.6 arcmin theta ?=- Average off-axis angle for merged obs
217-224 F8.6 pix+2 PSFfrac ?=- Average PSF fraction at 1.5keV, merged
observations (in skypix2)
226-237 E12.6 ct srcArea ?=- Average extraction area for merged obs
(always empty)
239-243 I5 ct srcCt.t Count in merged apertures 0.5-8keV (1)
245-254 F10.5 --- bgScal ?=- ratio of merged bkg and src areas
256-259 I4 ct bgCt.t Counts in merged bkg, 0.5-8keV (1)
261-271 F11.5 ct NetCt.t ?=- srcCt.t - bgCt.t/bgScal (1)
274 A1 cm2 EffArea.t [-] Mean ARF value, 0.5-8keV, NAN (1)
276-281 F6.4 keV Emed.t ?=- Median energy of events in 0.5-8keV (1)
283-289 F7.4 cm-2 NH log ISM Column Density: 1.6e+21*AV
291-301 F11.5 ct b_NetCt.t ?=- 1-sigma lower bound (aprates) for NetCt.t
303-314 E12.6 ct B_NetCt.t ?=- 1-sigma upper bound (aprates) for NetCt.t
316-327 E12.6 ct/cm2/s phFlux.t ?=- Flux NetCt.t/EffArea.t/ExpTime (1)
(always empty)
329-340 E12.6 mW/m2 Flux.t ?=- Flux phFlux.t*MedianEnergy.t*1.602E-9 (1)
342-348 F7.4 [10-7W] logLx.t ?=- XSPEC luminosity in 0.5-8keV band,
assuming D=2.3kpc (1)
350-356 F7.4 [10-7W] logLx.tc ?=- XSPEC luminosity in 0.5-8keV band,
absorption corrected (1)
358-365 F8.6 keV <kT> ?=- kT average
367-378 E12.6 --- logLx/b ?=- logLx.tc-logLbol-33.58 value
(always empty)
380-387 F8.6 --- rchi2 ? Best-fit reduced chi squared
388-397 F10.6 [cm-2] logNH1 ?=- Hydrogen column density from XSPEC
399-406 F8.5 [cm-2] b_logNH1 ?=- Lower 1-sigma bound for NH1
408-417 F10.6 [cm-2] B_logNH1 ?=- Upper 1-sigma bound for NH1
419-426 F8.6 keV kT1 ?=- First kT value from XSPEC
428-435 F8.6 keV b_kT1 ?=- Lower 1-sigma bound for KT1
437-444 F8.6 keV B_kT1 ?=- Upper 1-sigma bound for KT1
446-454 F9.6 keV kT2 ?=- Second kT value from XSPEC
456-463 F8.6 keV b_kT2 ?=- Lower 1-sigma bound for KT2
465-472 F8.6 keV B_kT2 ?=- Upper 1-sigma bound for KT2
474-481 F8.5 [cm-5] logNORM1 ?=- First NORM parameter from XSPEC
483-491 F9.5 [cm-5] b_logNORM1 ?=- Lower 1-sigma bound for NORM1
493-500 F8.5 [cm-5] B_logNORM1 ?=- Upper 1-sigma bound for NORM1
502-510 F9.6 [cm-5] logNORM2 ?=- Second NORM parameter from XSPEC
512-521 F10.6 [cm-5] b_logNORM2 ?=- Lower 1-sigma bound for NORM2
523-531 F9.6 [cm-5] B_logNORM2 ?=- Upper 1-sigma bound for NORM2
533-544 E12.6 mW/m2 FH8 ?=- Flux in 0.5-8.0keV band
546-557 E12.6 mW/m2 b_FH8 ?=- 90% 2-sided upper limit for FH8
559-570 E12.6 mW/m2 B_FH8 ?=- 90% 2-sided lower limit for FH8
572-583 E12.6 mW/m2 FTO ?=- Flux in 0.5-10.0keV band
585-596 E12.6 mW/m2 b_FTO ?=- 90% 2-sided upper limit for FTO
598-609 E12.6 mW/m2 B_FTO ?=- 90% 2-sided lower limit for FTO
611-622 E12.6 mW/m2 FCH8 ?=- Flux in 0.5-8.0keV band, NHISM=0
624-635 E12.6 mW/m2 FCTO ?=- Flux in 0.5-10.0keV band, NHISM=0
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Note (1): suffixes used:
* .t refers to the total 0.5-8keV band, while
* .tc refers to the total 0.5-8keV band, absorption corrected.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BiCode BibCode
24- 40 A17 --- Aut Author's name
42- 80 A39 --- Com Comments
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Acknowledgements:
Marc Gagne, mgagne(at)wcupa.edu, Leisa Townsley ,townsley(at)astro.psu.edu,
Pat Broos ,patb(at)astro.psu.edu, Matt Povich, povich(at)astro.psu.edu,
Yael Naze, naze(at)astro.ulg.ac.be
References:
Townsley et al. CCCP introduction 2011ApJS..194....1T 2011ApJS..194....1T
Broos et al. CCCP catalog Cat. J/ApJS/194/2
Getman et al. Contamination in X-ray studies 2011ApJS..194....3G 2011ApJS..194....3G
Broos et al. Source classifier Cat. J/ApJS/194/4
Gagne et al. O and B stars Cat. J/ApJS/194/5
Povich et al. Cand. X-ray emitting OB stars Cat. J/ApJS/194/6
Naze et al. O and B stars X-ray properties Cat. J/ApJS/194/7
Parkin et al. QZ Car (HD 93206) 2011ApJS..194....8P 2011ApJS..194....8P
Feigelson et al. X-ray star clusters Cat. J/ApJS/194/9
Preibisch et al. NIR properties of YSO Cat. J/ApJS/194/10
Wang et al. Trumpler 15 Cat. J/ApJS/194/11
Wolk et al. Trumpler 16 Cat. J/ApJS/194/12
Evans et al. Companions of B stars in Tr 16 2011ApJS..194...13E 2011ApJS..194...13E
Povich et al. Pan-Carina YSO catalog Cat. J/ApJS/194/14
Townsley et al. Diffuse X-ray emission Cat. J/ApJS/194/15
Townsley et al. Comparison of diffuse emission 2011ApJS..194...16T 2011ApJS..194...16T
(End) Marc Gagne [West Chester Univ., USA], Patricia Vannier [CDS] 05-May-2011