Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.2477m&link_type=abstract
The Astronomical Journal (ISSN 0004-6256), vol. 106, no. 6, p. 2477-2485
Astronomy and Astrophysics
Astronomy
23
Orion Constellation, Stellar Envelopes, Stellar Mass Ejection, T Tauri Stars, Emission Spectra, H Lines, K Lines, Spectrum Analysis, Stellar Mass, Stellar Spectra
Scientific paper
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.
Blake Geoffrey A.
McMuldroch Stuart
Sargent Anneila I.
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