The circumstellar environment of the FU Orionis pre-outburst candidate V1331 Cygni

Abstract

view Abstract Citations (31) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Circumstellar Environment of the FU Orionis Pre-Outburst Candidate V1331 Cygni McMuldroch, Stuart ; Sargent, Anneila I. ; Blake, Geoffrey A. Abstract High resolution (approximately 4 sec) aperture synthesis maps of the CO (1 yields 0), (13)CO (1 yields 0), (13)CO (2 yields 1), and asociated continuum emission from the FU Orions candidate V1331 Cygni reveal a massive, 0.5 +/- 0.15 solar mass, circumstellar disk surrounded by a flattened gaseous envelope, 6000 x 4400 AU in size, mass greater than or equal to 0.32 solar mass. These images and lower resolution measurements also trace a bipolar outflow and gaseous ring, 4.1 by 2.8 x 104 AU, mass greater than or equal to 0.07 solar mass, radially expanding at 22 +/- 4 km/s. We suggest this ring is a swept-up gaseous torus from an energetic mass ejection stage, possibly an FU Orionis outburst or outburts, approximately 4 x 103 yr ago that imparted greater than or equal to 1045 ergs into the ambient cloud. Publication: The Astronomical Journal Pub Date: December 1993 DOI: 10.1086/116815 Bibcode: 1993AJ....106.2477M Keywords: Orion Constellation; Stellar Envelopes; Stellar Mass Ejection; T Tauri Stars; Emission Spectra; H Lines; K Lines; Spectrum Analysis; Stellar Mass; Stellar Spectra; Astrophysics; STARS: INDIVIDUAL: FU ORIONIS; CIRCUMSTELLAR MATTER; STARS: ACTIVITY full text sources ADS | data products SIMBAD (2)