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J/A+A/521/A18    Blue stars with disk photometry in NGC 6611  (Guarcello+, 2010)

Pre-main sequence stars with disks in the Eagle nebula observed in scattered light. Guarcello M.G., Damiani F., Micela G., Peres G., Prisinzano L., Sciortino S. <Astron. Astrophys. 521, A18 (2010)> =2010A&A...521A..18G
ADC_Keywords: Clusters, open ; Stars, blue ; Photometry, UBVRI ; Photometry, infrared ; Photometry, millimetric/submm Keywords: accretion, accretion disks - scattering - protoplanetary disks - circumstellar matter - stars: pre-main sequence - Hertzsprung-Russell and C-M diagrams Abstract: NGC 6611 and its parental cloud, the Eagle Nebula (M 16), are well-studied star-forming regions, thanks to their large content of both OB stars and stars with disks and the observed ongoing star formation. In our previous studies of the Eagle Nebula, we identified 834 disk-bearing stars associated with the cloud, after detecting their excesses in NIR bands from J band to 8.0um. In this paper, we study in detail the nature of a subsample of disk-bearing stars that show peculiar characteristics. They appear older than the other members in the V vs. V-I diagram, and/or they have one or more IRAC colors at pure photospheric values, despite showing NIR excesses, when optical and infrared colors are compared. Description: This catalog contains coordinates and both optical and infrared photometry, plus usefull tags, of the Blue Stars With Disk (BWE stars) discussed in detail in Guarcello et al. (2010, in prep): "Pre-main sequence stars with disks in the Eagle nebula observed in scattered light". The optical photometry in BVI bands comes from observations with WFI@ESO (Guarcello et al. 2007, Cat. J/A+A/462/245); JHK photometry have been obtained from 2MASS/PSC and UKIDSS/GPS catalogs (Bonatto et al., 2006A&A...445..567B, Guarcello et al., 2007, Cat. J/A+A/462/245 and 2010, in prep); IRAC data are from GLIMPSE public survey (Indebetouw 2007ApJ...666..321I, Guarcello et al., 2009, Cat. J/A+A/496/453); X-ray data from observations with Chandra/ACIS-I (Linsky et al. 2007, Cat. J/ApJ/654/347, Guarcello et al., 2007, Cat. J/A+A/462/245, Guarcello et al., 2010, in prep). BWE stars have been studied by analizing their Spectral Energy Distribution (SED) using the grid of YSO models developed by Robitaille et al. 2006ApJS..167..256R. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.dat 241 81 Catalog of blue stars with disk (or BWE = Blue stars With Excess)
See also: J/ApJ/654/347 : Chandra X-ray observations in Eagle Nebula. I. (Linsky+, 2007) J/A+A/462/245 : BVI photometry in NGC 6611 (Guarcello+, 2007) J/A+A/496/453 : Photometry of candidate members of NGC 6611 (Guarcello+, 2009) Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 10 A10 --- ID Stellar IDs (6611-NNNNN; <[GDM2010] 6611 NNNNN> in Simbad) 12- 21 F10.6 deg RAdeg Right ascension (J2000) 23- 32 F10.6 deg DEdeg Declination (J2000) 34- 39 F6.3 mag Bmag WFI B (Johnson) magnitude 41- 45 F5.3 mag e_Bmag WFI B (Johnson) magnitude error 47- 52 F6.3 mag Vmag WFI V (Johnson) magnitude 54- 58 F5.3 mag e_Vmag WFI V (Johnson) magnitude error 60- 65 F6.3 mag Icmag WFI Ic (Cousins) magnitude 67- 71 F5.3 mag e_Icmag WFI Ic (Cousins) magnitude error 73- 78 F6.3 mag Jmag ?=99.999 UKIDSS J magnitude 80- 84 F5.3 mag e_Jmag ?=9.999 UKIDSS J magnitude error 86- 91 F6.3 mag Hmag ?=99.999 UKIDSS H magnitude 93- 97 F5.3 mag e_Hmag ?=9.999 UKIDSS H magnitude error 99-104 F6.3 mag Kmag ?=99.999 UKIDSS K magnitude 106-110 F5.3 mag e_Kmag ?=9.999 UKIDSS K magnitude error 112-117 F6.3 mag J2mag ?=99.999 2MASS J magnitude 119-123 F5.3 mag e_J2mag ?=9.999 2MASS J magnitude error 125-130 F6.3 mag H2mag ?=99.999 2MASS H magnitude 132-136 F5.3 mag e_H2mag ?=9.999 2MASS H magnitude error 138-143 F6.3 mag K2mag ?=99.999 2MASS Ks magnitude 145-149 F5.3 mag e_K2mag ?=9.999 2MASS Ks magnitude error 151-156 F6.3 mag [3.6] ?=99.999 Spitzer/IRAC 3.6 micron magnitude 158-162 F5.3 mag e_[3.6] ?=9.999 Spitzer/IRAC 3.6 micron magnitude error 164-169 F6.3 mag [4.5] ?=99.999 Spitzer/IRAC 4.5 micron magnitude 171-175 F5.3 mag e_[4.5] ?=9.999 Spitzer/IRAC 4.5 micron magnitude error 177-182 F6.3 mag [5.8] ?=99.999 Spitzer/IRAC 5.8 micron magnitude 184-188 F5.3 mag e_[5.8] ?=9.999 Spitzer/IRAC 5.8 micron magnitude error 190-195 F6.3 mag [8.0] ?=99.999 Spitzer/IRAC 8.0 micron magnitude 197-201 F5.3 mag e_[8.0] ?=9.999 Spitzer/IRAC 8.0 micron magnitude error 203 I1 --- X [0/1] X detection flag (1 for X-ray counterpart) 205 I1 --- f_Jmag [0/2] Excess flag in J band (1) 207 I1 --- f_Hmag [0/2] Excess flag in H band (1) 209 I1 --- f_Kmag [0/2] Excess flag in K band (1) 211 I1 --- f_[3.6] [0/2] Excess flag in [3.6] (1) 213 I1 --- f_[4.5] [0/2] Excess flag in [4.5] (1) 215 I1 --- f_[5.8] [0/2] Excess flag in [5.8] (1) 217 I1 --- f_[8.0] [0/2] Excess flag in [8.0] (1) 219-225 A7 --- FIT SED fitting flag (2) 227-229 A3 --- Opt [YES NO NAN] Optical excesses flag (3) 231-233 A3 --- Sct [YES NO NAN] Scattering flag (4) 235-237 A3 --- Obs [YES NO NAN] Obscuration by the disk flag (5) 239-241 A3 --- O+S [YES NO NAN] Obscuration+scattering flag (6)
Note (1): Excess flag as follows; 0 = no excess in the particular band 1 = star show excess in the particular band 2 = star not observed in the band Note (2): Flag for SED fitting: notgood = stellar SED did not match any model SED good = stellar SED matched some model SED undet = numbers of compatible model SEDs was so high that stellar parameters are not determined Note (3): Flag for optical excesses: YES = stellar SED is compatible with at least one SED model showing excesses in optical bands due to accretion NO = stellar SED not compatible NAN = not analysed Note (4): Flag for scattering: YES = stellar SED is compatible with at least one SED model whose optical SED is affected by scattered light NO = stellar SED not compatible NAN = not analysed Note (5): Flag for obscuration by the disk: YES = stellar SED is compatible with at least one SED model which predicts that stellar photosphere is partially obscured by the disk NO = stellar SED not compatible NAN = not analysed Note (6): Flag for obscuration+scattering: YES = stellar SED is compatible with at least one SED model showing NO = stellar SED not compatible NAN = not analysed
Acknowledgements: Mario Giuseppe Guarcello, mguarcel(at)head.cfa.harvard.edu References: Guarcello, Micela, Peres, Prisinzano, Sciortino, 2010A&A..in.prep. : Triggering of star formation by OB stars and induced disks photoevaporation the Eagle Nebula
(End) Mario Guarcello [SAO, Cambridge], Patricia Vannier [CDS] 10-Jun-2010
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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