Observations of "infrared STARS."

We have made photometric observations of the Neugebauer-Martz-Leighton Cygnus object, seven new very red stars found by Haro and Chavira, and four red stars found nearly thirty years ago by Hetzler. Haro and Chavira and Hetxler used photographic techniques to discover their stars. The effective temperatures of these objects have been estimated to range from 1900 to 1400 K for the Haro-Chavira stars and from 1950 to 1550 K for the Hetzler stars. The temperature of the Neugebauer-Martz-Leighton Cygnus object is quite uncertain, but is probably about 1000 K. The spectralenergy-curves resemble rather closely those of warmer M-type giants, but are very different from those of carbon stars of similar temperatures. Preliminary results of the Haro-Chavira survey indicate that the very red stars are restricted to the general region of the Milky Way; this implies that they are distant objects and very luminous. By permission of the discoverers, we reproduce here finding charts for the seven Haro-Chavira objects.