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J/A+A/459/199 XMM-Newton survey of two Upper Scorpius regions (Argiroffi+ 2006)

XMM-Newton survey of two Upper Scorpius regions. Argiroffi C., Favata F., Flaccomio E., Maggio A., Micela G., Peres G., Sciortino S. <Astron. Astrophys., 459, 199 (2006)> =2006A&A...459..199A
ADC_Keywords: Stars, pre-main sequence ; X-ray sources ; Photometry, UBVRI Keywords: stars: abundances - stars: activity - stars: coronae - stars: flare - stars: pre-main sequence - X-rays: stars Abstract: We studied X-ray emission from young stars by analyzing the deep XMM-Newton observations of two regions of the Upper Scorpius association with an age of 5Myr. Based on near infrared and optical photometry we identified 22 Upper Scorpius photometric members among the 224 detected X-ray sources. We derived coronal properties of Upper Scorpius stars by performing X-ray spectral and timing analyses. The study of four strong and isolated stellar flares allowed us to derive the length of the flaring loops. Description: Portions of the Upper Scorpius association were observed with the Curtis Schmidt (CTIO) telescope, with the Danish 1.54m (ESO) telescope, and with the XMM-Newton satellite. The tables contain all the sources detected with the different instruments, and their characteristics. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 130 22 Probable members of Upper Scorpius tableb1.dat 69 5759 Sources detected in the CTIO observations tablec1.dat 53 3570 Sources detected in the Danish 1.54m observations tabled1.dat 150 224 Sources detected in the XMM observations
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- XMM XMM source identification number 5- 27 A23 --- Name Name 29- 33 F5.2 mag Jmag1 2MASS J magnitude 35- 39 F5.2 mag Hmag1 2MASS H magnitude 41- 45 F5.2 mag Kmag1 2MASS K magnitude 47- 51 F5.2 mag Imag2 ? DENIS I magnitude 53- 57 F5.2 mag Jmag2 ? DENIS J magnitude 59- 63 F5.2 mag Kmag2 ? DENIS K magnitude 65- 69 F5.2 mag Umag3 ? CTIO U magnitude 71- 75 F5.2 mag Bmag3 ? CTIO B magnitude 77- 81 F5.2 mag Vmag3 ? CTIO V magnitude 83- 87 F5.2 mag Rmag3 ? CTIO R magnitude 89- 93 F5.2 mag Imag3 ? CTIO I magnitude 95- 99 F5.2 mag Vmag4 ? Danish V magnitude 101-105 F5.2 mag Rmag4 ? Danish R magnitude 107-111 F5.2 mag Imag4 ? Danish I magnitude 113-118 F6.2 [mW/m2] logFX X-ray flux 119 A1 --- n_logFX [cd] Note on logFX (1) 121-125 F5.2 [10-7W] logLX X-ray luminosity (evaluated assuming a distance of 145pc) 126 A1 --- n_logLX [cd] Note on logLX (1) 128-130 A3 --- Memb Membership (2)
Note (1): Notes as follows: c = Unabsorbed X-ray fluxes and luminosities in the 0.5-8.0keV band were computed starting from PN equivalent count rates and adopting a multiplicative factor of 2.37x10-12erg/cm2 d = Unabsorbed X-ray fluxes and luminosities in the 0.5-8.0keV band were evaluated from the best-fit model of the observed spectrum Note (2): Membership code as follows: ? = stars whose photometry casts some doubt on their membership in Upper Scorpius W94 = Walter et al., 1994AJ....107..692W A00 = Ardila et al., 2000AJ....120..479A S92 = Slawson et al., 1992, Cat. J/ApJS/82/117 P98 = Preibish et al., 1998, Cat. J/A+A/333/619 S06 = Slesnick et al., 2006, Cat. J/AJ/131/3016
Byte-by-byte Description of file: tableb1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- CTIO CTIO source identification number 7- 8 I2 h RAh Right ascension (J2000) 9 A1 --- --- [:] 10- 11 I2 min RAm Right ascension (J2000) 12 A1 --- --- [:] 13- 16 F4.1 s RAs [0,60] Right ascension (J2000) 19 A1 --- DE- Declination sign 20- 21 I2 deg DEd Declination (J2000) 22 A1 --- --- [:] 23- 24 I2 arcmin DEm Declination (J2000) 25 A1 --- --- [:] 26- 29 F4.1 arcsec DEs [0,60] Declination (J2000) 33- 37 F5.2 mag Vmag Apparent magnitude in V filter 41- 45 F5.2 mag B-V B-V color index 49- 53 F5.2 mag U-B ? U-B color index 57- 61 F5.2 mag V-R ? V-R color index 65- 69 F5.2 mag V-I ? V-I color index
Byte-by-byte Description of file: tablec1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Danish Danish 1.54m source identification number 7- 8 I2 h RAh Right ascension (J2000) 9 A1 --- --- [:] 10- 11 I2 min RAm Right ascension (J2000) 12 A1 --- --- [:] 13- 16 F4.1 s RAs [0,60] Right ascension (J2000) 19 A1 --- DE- Declination sign 20- 21 I2 deg DEd Declination (J2000) 22 A1 --- --- [:] 23- 24 I2 arcmin DEm Declination (J2000) 25 A1 --- --- [:] 26- 29 F4.1 arcsec DEs [0,60] Declination (J2000) 33- 37 F5.2 mag Vmag Apparent magnitude in V filter 41- 45 F5.2 mag V-R ? V-R color index 49- 53 F5.2 mag V-I V-I color index
Byte-by-byte Description of file: tabled1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- XMM XMM source identification number 7- 8 I2 h RAh Right ascension (J2000) 9 A1 --- --- [:] 10- 11 I2 min RAm Right ascension (J2000) 12 A1 --- --- [:] 13- 16 F4.1 s RAs Right ascension (J2000) 19 A1 --- DE- Declination sign (J2000) 20- 21 I2 deg DEd Declination (J2000) 22 A1 --- --- [:] 23- 24 I2 arcmin DEm Declination (J2000) 25 A1 --- --- [:] 26- 29 F4.1 arcsec DEs Declination (J2000) 32- 37 F6.1 ct/ks CR ? PN count rate (1) 40- 43 F4.1 ct/ks e_CR ? PN count rate error 46- 49 F4.1 mag XC1 ? X-ray softer color (2) 51- 52 A2 --- XC1inst EPIC instrument used for the XC1 evaluation 55- 58 F4.1 mag XC2 ? X-ray harder color (3) 60- 61 A2 --- XC2inst EPIC instrument used for the XC2 evaluation 64- 79 A16 --- 2MASScp Name of the 2MASS counterpart 82- 84 F3.1 arcsec 2MASSoff ? Offset of the 2MASS counterpart 87-102 A16 --- DENIScp Name of the DENIS counterpart 105-107 F3.1 arcsec DENISoff ? Offset of the DENIS counterpart 109-124 A16 --- 2MASScp2 Name of the second 2MASS counterpart 127-129 F3.1 arcsec 2MASSoff2 ? Offset of the second 2MASS counterpart 130-145 A16 --- DENIScp2 Name of the second DENIS counterpart 148-150 F3.1 arcsec DENISoff2 ? Offset of the second DENIS counterpart
Note (1): PN count rate that would be observed if sources were located on the telescope axis. Note (2): X-ray color 1 is defined as 2.5*log(M/S), where M and S indicate the background subtracted number of photons in the medium (0.85-1.4keV) and soft (0.3-0.85keV) energy band. Note (3): X-ray color 2 is defined as 2.5*log(H/M), where H and M indicate the background subtracted number of photons in the hard (1.4-7.9keV) and medium (0.85-1.4keV) energy band.
Acknowledgements: Costanza Argiroffi, argi(at)astropa.unipa.it History: * 26-Oct-2006: Original version * 12-Jan-2007: Units of CR in tabled1.dat corrected (from ct/s tp ct/ks)
(End) Costanza Argiroffi [Univ. Palermo] 26-Oct-2006
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

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