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We investigate a region of the Galactic plane, between 120 <= l <= 140 and -1<= b <= +4, and uncover a population of moderately reddened (E(B-V) \sim 1)classical Be stars within and beyond the Perseus and Outer Arms. 370 candidateemission line stars (13 <= r <= 16) selected from the INT Photometric H-alphaSurvey of the Northern Galactic plane (IPHAS) have been followed upspectroscopically. A subset of these, 67 stars with properties consistent withthose of classical Be stars, have been observed at sufficient spectralresolution (Delta_lambda \sim 2 - 4 Angstrom) at blue wavelengths to narrowdown their spectral types. We determine these to a precision estimated to be+/- 1 sub-type and then we measure reddenings via SED fitting with reference toappropriate model atmospheres. Corrections for contribution to colour excessfrom circumstellar discs are made using an established scaling to H-alphaemission equivalent width. Spectroscopic parallaxes are obtained afterluminosity class has been constrained via estimates of distances toneighbouring A/F stars with similar reddenings. Overwhelmingly, the stars inthe sample are confirmed as luminous classical Be stars at heliocentricdistances ranging from 2 kpc up to \sim 12 kpc. However, the errors arepresently too large to enable the cumulative distribution function with respectto distance to distinguish between models placing the stars exclusively inspiral arms, or in a smooth exponentially-declining distribution.

First results of an H-alpha based search of classical Be stars in the Perseus Arm and beyond