A serendipitous discovery of a new double star at the TNG
The observations carried out in 2004, 2006 and 2007 with the adaptive optics module (AdOpt@TNG), mounted on the Telescopio Nazionale Galileo (TNG), reveal a new double star (0.35" separation) in TYCHO 40-501-1, 900parsec far. 2006 and 2007 spectra with the high resolution echelle spectrograph (SARG), mounted in the same telescope, confirmed the imaging detection and contributed to fix the spectral types of the two separated stars whose magnitudes now are known. There are strong considerations that this double star (and also the third 14arcsec far one) could form a gravitationally linked system. The discovery data are published in a recent IAU Double Stars information circular ( N.178, October 2012).
