Access to Astronomical Catalogues

← Click to display the menu
J/A+A/453/517         JKs photometry of N159A                    (Testor+, 2006)

VLT/NACO near-infrared imaging and spectroscopy of N159A in the LMC HII complex N159. Testor G., Lemaire J.L., Field D., Diana S. <Astron. Astrophys. 453, 517 (2006)> =2006A&A...453..517T
ADC_Keywords: Magellanic Clouds ; H II regions ; Photometry, infrared Keywords: galaxies: Large Magellanic Cloud -- ISM: individual objects: N159A - stars: formation - stars: individual: pre-main sequence Abstract: We present near-infrared imaging and spectroscopic observations of the HII region N159A (∼10pc) in the giant star-forming region N159 (50pc) in the LMC. N159A was observed in the J and Ks bands at high spatial resolution ∼0.2" using the ESO Very Large Telescope UT4 (VLT), equipped with the NAOS adaptative optics system. Our data reveal the morphology of this region in unprecedented detail. The protostar P2, one of the first YSOs of Class I identified in the LMC is now resolved in two YSO candidates. The ultracompact HII region LI-LMC 1501W is found to be a tight cluster embedded in a compact HII region ionised by a late O source. A new multiple system composed of a tight star cluster and an YSO candidate, all embedded in compact nebular region (0.4pc) is also detected at the north-east edge of N159A. The stellar population of the whole N159A region appears composed of two main stellar populations, one with an age <3Myr and the other one with a large range of age (300Myr-10Gyr). Using spectroscopy, one of the two exciting O stars in the HII region N159A is classified O5-O6. Description: This table displays the results of a DAOPHOT/NSTAR photometry run on VLT/NACO JK images from the LMC N159A region. Sequential number refers to the chart in the paper. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 05 39 55.0 -69 45 00 LHA 120-N 159A = NGC 2079 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 92 136 DAOPHOT/NSTAR photometry on VLT/NACO JKs images
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 5 I1 h RAh Right ascension (J2000) 7- 8 I2 min RAm Right ascension (J2000) 10- 14 F5.2 s RAs Right ascension (J2000) 16 A1 --- DE- Declination sign (J2000) 17- 18 I2 deg DEd Declination (J2000) 20- 21 I2 arcmin DEm Declination (J2000) 23- 27 F5.2 arcsec DEs Declination (J2000) 30- 35 F6.2 pix Xpos X position 37- 42 F6.2 pix Ypos Y position 44- 48 F5.2 mag Jmag J magnitude 50- 53 F4.2 mag e_Jmag rms uncertainty on Jmag 55- 59 F5.2 mag Ksmag Ks magnitude 61- 64 F4.2 mag e_Ksmag rms uncertainty on Ksmag 66- 69 F4.2 mag J-Ks J-Ks colour index 71- 73 I3 ---- [DCL92] ? Deharveng et al. (1992A&A...259..480D) number 75- 79 F5.2 mag Vmag ? V magnitude from DCL92 81- 84 F4.2 mag B-V ? B-V colour index from DCL92 86- 92 A7 --- SpType MK spectral type from DCL92
Acknowledgements: Gerard Testor, testor(at)
(End) Patricia Vannier [CDS] 22-Jun-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

catalogue service