NAKANISHI K., SAITO M., FURUYA R.S., SHINNAGA H. and MOMOSE M.
Abstract (from CDS):
K. Nakanishi and M. Saito, Nobeyama Radio Observatory, National Astronomical Observatory of Japan; R. S. Furuya, Istituto Nazionale di Astrofisica, Osservatorio Astrofisico di Arcetri; H. Shinnaga, Harvard-Smithsonian Center for Astrophysics; and M. Momose, Ibaraki University, report on follow-up observations of the radio flaring object in Orion cluster, using the Nobeyama Millimeter Array (NMA) at Nobeyama Radio Observatory: The object is located at R.A. = 5h35m11s.79, Decl. = -5 21'49".2 (equinox 2000.0; estimated uncertainty 0".2), which agrees well with that reported on IAUC 8055. The NMA data give continuum flux densities of 39.1 ± 5.1 mJy at 146.969 GHz on Jan. 25.55 UT (resolution 1".3 x 0".9) and 22.4 ± 5.4 mJy at 97.782 GHz on Jan. 25.62 (resolution 2".5 x 1".2). We suggest that the object is/are (a) massive (proto)star(s) that might be involved in mass-ejection event(s). Further interferometric observations at millimeter wavelengths are planned, and observations at other wavelengths are urgently requested."