منابع مشابه
A symmetric bipolar nebula around MWC 922.
We report regular and symmetric structure around dust-enshrouded Be star MWC 922 obtained with infrared imaging. Biconical lobes that appear nearly square in aspect, forming this "Red Square" nebula, are crossed by a series of rungs that terminate in bright knots or "vortices," and an equatorial dark band crossing the core delimits twin hyperbolic arcs. The intricate yet cleanly constructed for...
متن کاملAstronomy & Astrophysics L etter to the E ditor AMBER / VLTI observations of the B [ e ] star MWC 300
Aims. We study the enigmatic B[e] star MWC 300 to investigate its disk and binary with milli-arcsecond-scale angular resolution. Methods. We observed MWC 300 with the VLTI/AMBER instrument in the H and K bands and compared these observations with temperature-gradient models to derive model parameters. Results. The measured low visibility values, wavelength dependence of the visibilities, and wa...
متن کاملA strong magnetic field in the disk of MWC 349
Using Zeeman observations of the H30α recombi-nation line maser transition at 1.3 mm we have detected a magnetic field which is associated with the corona of the circum-stellar disk of MWC 349. At a radial distance of 40 a.u., where the H30α maser is located, the line–of–sight component of the field is approximately parallel to the plane of this edge–on disk, and its average strength is 22 mG. ...
متن کاملQuintessence as a runaway dilaton
We consider a late-time cosmological model based on a recent proposal that the infinite-bare-coupling limit of superstring/M-theory exists and has good phenomenological properties, including a vanishing cosmological constant, and a massless, decoupled dilaton. As it runs away to +∞, the dilaton can play the role of the quintessence field recently advocated to drive the late-time accelerated exp...
متن کاملCO and H+3 Toward MWC 1080, MWC 349, and LkHα 101
We present high-resolution, near-infrared NIRSPEC observations of the fundamental rovibrational CO and H3 R(1,0), R(1,1), and Q(1,0) transitions toward three early-type young stars: MWC 1080, MWC 349, and LkHα 101. These observations were performed for the purpose of constraining the physical characteristics of the interstellar material along each line of sight. Toward MWC 1080, we detected str...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1986
ISSN: 0074-1809
DOI: 10.1017/s0074180900149010