Access to Astronomical Catalogues

← Click to display the menu
J/A+A/395/499      XMM observations in M8 and NGC6530        (Rauw+, 2002)

An XMM-Newton observation of the Lagoon Nebula and the very young open cluster NGC 6530. Rauw G., Naze Y., Gosset E., Stevens I.R., Blomme R., Corcoran M.F., Pittard J.M., Runacres M.C. <Astron. Astrophys. 395, 499 (2002)> =2002A&A...395..499R
ADC_Keywords: Clusters, open ; X-ray sources ; Photometry, UBV Keywords: ISM: individual objects: M 8 - open clusters and associations: individual: NGC 6530 - stars: early-type - stars: pre-main sequence - X-rays: stars Abstract: We report the results of an XMM-Newton observation of the Lagoon Nebula (M 8). Our EPIC images of this region reveal a cluster of point sources, most of which have optical counterparts inside the very young open cluster NGC 6530. The bulk of these X-ray sources are probably associated with low and intermediate mass pre-main sequence stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 107 72 X-ray sources detected in NGC 6530 and found to have a single counterpart in Sung et al. (2000, J/AJ/120/333) catalogue or in SIMBAD database. table2.dat 96 17 X-ray sources with two or more counterparts from Sung et al. (2000, J/AJ/120/333) inside a radius of 9"around the position of the X-ray source table3.dat 47 28 X-ray sources detected in NGC 6530 that have no counterpart in Sung et al. (2000, J/AJ/120/333) catalogue and SIMBAD database within a radius of 9"
See also: B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2002) IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003) J/AJ/120/333 : UBVRI and Hα in NGC 6530 (Sung+, 2000) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [RNG2002] Sequential number of the source 5- 19 A15 --- XMMU XMMUJ designation (HHMMSS.s+DDMMSS) 21- 24 F4.1 ct/ks MOS1 Vignetting and background corrected EPIC-MOS1 count rates in 0.5-1.2keV band 26- 28 F3.1 ct/ks e_MOS1 rms uncertainty on MOS1 30- 33 F4.1 ct/ks MOS2 ? Vignetting and background corrected EPIC-MOS2 count rates in 0.5-1.2keV band 35- 37 F3.1 ct/ks e_MOS2 ? rms uncertainty on MOS2 39- 42 F4.1 ct/ks PN ? Vignetting and background corrected PN count rates in 0.5-1.2keV band (1) 44- 46 F3.1 ct/ks e_PN ? rms uncertainty on PN 48- 51 I4 --- SCB ? Number of the optical counterpart from Sung et al. (2000, Cat. J/AJ/120/333) Cl* NGC 6530 SCB NNNN in Simbad 53- 55 F3.1 arcsec Dist Separation from the position of the X-ray source 57- 61 F5.2 mag Vmag V magnitude (2) 63- 66 F4.2 mag B-V ? B-V colour index (2) 68- 71 F4.2 mag V-I ? V-I colour index (2) 73 A1 --- Var [YN?] Variability 75-107 A33 --- Com Comments (3)
Note (1): For sources affected by the gaps between the detectors, we do not quote the count rate for the corresponding instrument. Note (2): The photometric data are taken from Sung et al. (2000, Cat. J/AJ/120/333), except for V1752 Sgr. Note (3): Information about the spectral types, pre-main sequence classification and the membership probability (Pµ) according to the proper motion study of van Altena & Jones (1972A&A....20..425V).
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [RNG2002] Sequential number of the source 5- 19 A15 --- XMMU XMMUJ designation (HHMMSS.s+DDMMSS) 21- 24 F4.1 ct/ks MOS1 ? Vignetting and background corrected EPIC-MOS1 count rates in 0.5-1.2keV band 26- 28 F3.1 ct/ks e_MOS1 ? rms uncertainty on MOS1 30- 32 F3.1 ct/ks MOS2 ? Vignetting and background corrected EPIC-MOS2 count rates in 0.5-1.2keV band 34- 36 F3.1 ct/ks e_MOS2 ? rms uncertainty on MOS2 38- 41 F4.1 ct/ks PN ? Vignetting and background corrected PN count rates in the 0.5-1.2 keV band 43- 45 F3.1 ct/ks e_PN ? rms uncertainty on PN 47- 50 I4 --- SCB1 First possible optical counterpart (1) 51 A1 --- --- [/] 52- 55 I4 --- SCB2 Second possible optical counterpart number (1) 56 A1 --- --- [/] 57- 60 I4 --- SCB3 ? Third possible optical counterpart number (1) 62- 64 F3.1 arcsec Dist1 ? Separation from the position of the X-ray source for SCB1 65 A1 --- --- [/] 66- 68 F3.1 arcsec Dist2 ? Separation from the position of the X-ray source for SCB2 69 A1 --- --- [/] 70- 72 F3.1 arcsec Dist3 ? Separation from the position of the X-ray source for SCB3 74 A1 --- Var [YN?] Variability 76- 94 A19 --- Com Comments 96 A1 --- Note [abc] Note (2)
Note (1): Number from Sung et al. (2000, Cat. J/AJ/120/333), Cl* NGC 6530 SCB NNNN in Simbad Note (2): Individual notes as follows: a = CB 1028 is classified as a PMS star, while SCB 1039 is a PMS candidate (Sung et al. 2000). b = SCB 142 is a Hα emitting star (LkHα106) while SCB 1019 is a PMS star (Sung et al., J/AJ/120/333). c = Source #75 (XMMU J180350.5-242110) lies within the wings of the PSF of 9 Sgr. Therefore no accurate count rates can be provided.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [RNG2002] Sequential number of the source 5- 19 A15 --- XMMU XMMUJ designation (HHMMSS.s+DDMMSS) 21- 23 F3.1 ct/ks MOS1 ? Vignetting and background corrected EPIC-MOS1 count rates in 0.5-1.2keV band 25- 27 F3.1 ct/ks e_MOS1 ? rms uncertainty on MOS1 28 A1 --- n_MOS1 [a] See note (1) 29- 32 F4.1 ct/ks MOS2 ? Vignetting and background corrected EPIC-MOS2 count rates in 0.5-1.2keV band 34- 36 F3.1 ct/ks e_MOS2 ? rms uncertainty on MOS2 37 A1 --- n_MOS2 [a] See note (1) 38- 41 F4.1 ct/ks PN ? Vignetting and background corrected PN count rates in the 0.5-1.2 keV band 43- 45 F3.1 ct/ks e_PN ? rms uncertainty on PN 47 A1 --- Var [YN?] Variability (G1)
Note (1): a: Source #90 (XMMU J180252.9-241525) lies outside the field of view of the MOS instruments, but is detected as a rather bright source with (1.14±0.23)*10-2cts/s in the PN image.
Global notes: Note (G1): Indicates whether variability is detected at the 95% confidence level (Y) or not (N). Those sources flagged with a "?'' show some hints of variability in their light curve, but this is not found to be significant by the Kolmogorov-Smirnov test.
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 29-Apr-2003
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