1. Present knowledge about HD 6226
HD 6226 (BD+46 245, SAO 36891) is a remarkably little studied bright B star. Guetter (1968) classified the star as B2IV-V while Bidelman, Ratcliff & Svolopoulos (1988) give B3III. Andrews (1968) derived the strength of the H line of HD 6226 from his photoelectric measurements and did not suspect the star to be an emission-line object.
The radial velocity (RV) of the star is probably variable (Plaskett & Pearce 1931 mention that the lines are good for measurements) but there are only four individually published velocities. The mean observed RVs quoted in GCRV range from -48 to 60 km s-1. Moreover, it seems that also the Ca II K line varies so that the object can in fact be a double-line spectroscopic binary.
To the best of our knowledge, there are only two published determinations of the mean UBV values of the star, both based on all-sky observations: Guetter (1974) observed the star between March 1973 and January 1974 and gives
V = 6. 81, = -0. 04, and = -0. 59
while Deutschman, David & Schild (1976) derived
V = 6. 82, = -0. 03, and = -0. 58
from their observations secured from January 1973 to January 1974.
© European Southern Observatory (ESO) 1998
Online publication: January 8, 1998