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We analyze single particle momentum spectra and interferometry radii incentral Au+Au collisions at RHIC within a hydro-inspired parametrizationaccounting for continuous hadron emission through the whole lifetime ofhydrodynamically expanding fireball. We found that a satisfactory descriptionof the data is achieved for a physically reasonable set of parameters when theemission from non space-like sectors of the enclosed freeze-out hypersurface isfairly long: $ 9$ fm/c. This protracted surface emission is compensated inoutward interferometry radii by positive $r_{out} - t$ correlations that arethe result of an intensive transverse expansion. The main features of theexperimental data are reproduced: in particular, the obtained ratio of theoutward to sideward interferometry radii is less than unity and decreases withincreasing transverse momenta of pion pairs. The extracted value of thetemperature of emission from the surface of hydrodynamic tube approximatelycoincides with one found at chemical freeze-out in RHIC Au+Au collisions.  A significant contribution of the surface emission to the spectra and to thecorrelation functions at relatively large transverse momenta should be takeninto account in advanced hydrodynamic models of ultrarelativisticnucleus-nucleus collisions.Comment: 16 pages, 4 figures, minor correction

physical review. c. nuclear physics/physical review. c, nuclear physics

Hydrodynamic source with continuous emission in Au+Au collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn></mml:mrow></mml:math>GeV

Hydrodynamic source with continuous emission in Au+Au collisions ats=200GeV