/ftp/cats/J/MN/357/./645



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J/MNRAS/357/645     LMC far-UV HST observations              (Almoznino+, 2005)
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	table2.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/MNRAS/357/645
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Beginning of ReadMe : J/MNRAS/357/645 LMC far-UV HST observations (Almoznino+, 2005) ================================================================================ The deepest Hubble Space Telescope far-ultraviolet observations in the Large Magellanic Cloud. Almoznino E., Brosch N., Shara M., Zurek D. <Mon. Not. R. Astron. Soc., 357, 645-655 (2005)> =2005MNRAS.357..645A ================================================================================ ADC_Keywords: Magellanic Clouds ; Ultraviolet ; Photometry, CCD Keywords: stars: formation - galaxies: individual: Large Magellanic Cloud - galaxies: irregular - galaxies: stellar content Abstract: We present a new analysis of the deepest pure-ultraviolet (UV) observations with the highest angular resolution ever performed. A set of 12 exposures with the Hubble Space Telescope (HST) WFPC2 and F160BW filter obtained in parallel observing mode, which cover  12arcmin^2^ in the Large Magellanic Cloud (LMC), north of the bar and in the 'general field' region of the LMC, contain stars with far-UV monochromatic magnitudes as faint as 22mag. The 198 detected UV sources represent an accumulated exposure of 2x10^4^s and reveal stars as faint as m_UV_= 20mag. We combine these observations with deep UBVI charge-coupled device (CCD) imaging of the same region reaching as faint as V= 26mag, and reselect probable optical counterparts for the UV sources. After a two-stage search-and-analysis process, we detect robust counterparts for 129 stars. These are mostly upper main-sequence stars, from early B to early A spectral classes, with several F stars. We point out the lack of blue supergiants, which could have been easily detected in our survey. We measure a foreground extinction E(B-V)= 0.08mag by Galactic dust and a surface density of star formation rate twice the average Galactic value. These observations indicate that relatively recent star formation took place even off the bar of the LMC. Description: New optical observations of a small fraction of the LMC, including the area studied with the HST, were performed by MS using the CTIO 4-m Victor Blanco Telescope with the Mosaic II CCD imager.