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J/A+A/436/117       BVR photometry in N214C            (Meynadier+, 2005)

The LMC HII region N 214C and its peculiar nebular blob. Meynadier F., Heydari-Malayeri M., Walborn N.R. <Astron. Astrophys. 436, 117 (2005)> =2005A&A...436..117M
ADC_Keywords: Magellanic Clouds ; H II regions ; Photometry, UBVRI Keywords: stars: early-type - galaxies: Magellanic Clouds - interstellar medium: individual objects: LHA 120-N 214C Abstract: We study the Large Magellanic Cloud HII region N 214C using imaging and spectroscopy obtained at the ESO New Technology Telescope. On the basis of the highest resolution images so far obtained of the OB association LH 110, we show that the main exciting source of the HII region, Sk -71 51, is in fact a tight cluster of massive stars consisting of at least 6 components in an area ∼4" wide. Spectroscopic observations allow us to revise the spectral type of the main component (#17) to O2V((f*))+OB, a very rare, hot type. We also classify several other stars associated with N 214C and study the extinction and excitation characteristics of the HII region. Moreover, we obtain BVR photometry and astrometry of 2365 stars and from the corresponding color-magnitude diagram study the stellar content of N 214C and the surrounding LH 110. Furthermore, we discover a striking compact blob of ionized gas in the outer northern part of N 214C. A spherical structure of ∼5", in radius (∼1.3pc), it is split into two lobes by absorbing dust running diametrically through its center. We discuss the possible nature of this object. Description: Table 2 displays the results of a DAOPHOT/ALLSTAR photometry run on NTT/SuSI2 BVR images from the LMC N214 (LHA 120-N 214) region. DAOPHOT internal errors were found to be much smaller than the worse difference of magnitude over comparable plates, which was finally chosen as the error indicator. Table 3 displays the deconvolution results for the Sk-71 51 cluster, using the latest implementation of the MCS deconvolution algorithm (see text and P. Magain, F Courbin, S. Sohy, M. Gillon & G. Letawe, 2005, in prep). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 66 2327 Astrometry and BVR photometry of sources around LMC N214 table3.dat 65 48 Astrometry and BVR photometry obtained after deconvolution of the Sk-71 51 cluster
Byte-by-byte Description of file: table2.dat table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq Identification number 6- 7 I2 h RAh Right ascension (J2000) 9- 10 I2 min RAm Right ascension (J2000) 12- 16 F5.2 s RAs Right ascension (J2000) 18 A1 --- DE- Declination sign 19- 20 I2 deg DEd Declination (J2000) 22- 23 I2 arcmin DEm Declination (J2000) 25- 28 F4.1 arcsec DEs Declination (J2000) 30- 34 F5.2 mag Vmag ? Bessel V magnitude (1) 36- 40 F5.2 mag B-V ? Bessel B-V color index (1) 42- 46 F5.2 mag V-R ? Bessel V-R color index (1) 49- 53 F5.3 mag e_Vmag ? Vmag error estimation (1) 55- 59 F5.3 mag e_B-V ? B-V error estimation (see text) (1) 61- 65 F5.3 mag e_V-R ? V-R error estimation (see text) (1)
Note (1): In table3.dat, some photometry results are missing due to insufficient S/N ratio.
Acknowledgements: Frederic Meynadier, Frederic.Meynadier(at)obspm.fr
(End) F. Meynadier [LERMA - Obs. de Paris], Patricia Vannier [CDS] 05-Apr-2005
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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