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Charting the neighbourhood

机译:绘制邻里

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We present Surface Brightness Fluctuation (SBF) distances of fifteen early-type dwarf galaxies and the SO galaxy NGC 4150 in the Local Volume based on deep B- and R-band CCD images obtained with the 2.56 metre Nordic Optical Telescope (NOT). Distances have been determined from Fourier analysed fields selected from optimal locations on the galaxies. Distances were found to range from 3 to 16 Mpc. The SBF method has been demonstrated to efficiently measure relatively accurate distances from the ground with mid-aperture telescopes. The SBF method to measure distances to dwarf elliptical (dE) galaxies has also been empirically calibrated using three dEs with known tip of the red giant branch (TRGB) distances.
机译:我们将表面亮度波动(SBF)距离为十五型早期矮星,基于用2.56米北欧光学望远镜(不)获得的深层B和R带CCD图像,所以在局部体积中的局部银河NGC 4150。距离从星系上的最佳位置中选择的傅里叶分析领域确定了距离。发现距离范围为3到16 MPC。已经证明了SBF方法以有效地测量与中间孔径望远镜的地面相对精确的距离。用于测量Dwarf椭圆形(DE)星系的距离的SBF方法也使用三个DES经验校准,其中红巨型分支(TRGB)距离。

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