GAS AND DUST ASSOCIATED WITH THE STRANGE, ISOLATED STAR BP PISCIUM

摘要: We have carried out a multiwavelength observational campaign demonstrating some of the remarkable properties infrared-bright variable star BP Psc. Surrounded by compact dusty, gaseous disk, this little-studied late G (or early K) type emits about 75% its detected energy flux at infrared wavelengths. Evidence for accretion gas in conjunction with narrow bipolar jets and Herbig-Haro objects is apparently consistent classification Psc as pre-main-sequence star, postulated most previous studies. If young, then would be one nearest oldest known classical T Tauri stars. However, such an evolutionary encounters various problems that are absent or much less severe if instead luminosity class III post-main-sequence star. In case, it first example first-ascent giant surrounded massive molecular disk accompanying rapid prominent HH objects. model, genesis dusty could consequence envelopment low-mass companion Properties may conducive to current formation planets, gigayear more after itself.