Abstract
Recent discoveries of planets orbiting several nearby solar-mass stars have focussed renewed attention on the frequency and evolution of planetary systems and their evolutionary precursors around both solar and intermediate (2 ≤ M/M ⊙ ≤ 8) mass stars. As a result of a wealth of new observations at all wavelengths of the circumstellar material around the nearest of the young intermediate-mass stars, the so-called Herbig Ae/Be (HAeBe) stars, we are beginning to see how these systems are similar to the solar mass objects, and how they differ. A review of the recent literature is presented, including the evolutionary status of the stars, binary frequency and the star forming environment, the morphology of the circumstellar material, including the first direct detections of disks in Keplerian rotation around these objects, and mass loss and infall phenomena. Prospects for advances in this research area as a result of advances in instrumentation are reviewed.
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Pérez, M.R., Grady, C.A. Observational Overview of Young Intermediate-Mass Objects: Herbig Ae/Be Stars. Space Science Reviews 82, 407–450 (1997). https://doi.org/10.1023/A:1005064108523
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DOI: https://doi.org/10.1023/A:1005064108523