Description of source "21381+5000" from Blaszkiewicz & Kus (2004)

Slysh et al. (1999) discovered 6.7 GHz maser emission during observations towards GL 2789. Szymczak et al. (2000) provided a different spectral shape. The profile presently obtained is similar to the one recorded by Szymczak in general, but we noted signicficant differences in separate

components which suggest their variability. We also found a 6.7 GHz absorption at the position of the 12.2 GHz emission line discovered by us. This case is similar to 19186+1440, where we have observed the 6.7 GHz absorption associated with the 12.2 GHz emission.