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A search for clustering around Herbig Ae/Be stars
Leonardo Testi 1,
Francesco Palla 2,
Timo Prusti 3,
Antonella Natta 2 and
Silvia Maltagliati 1
Received 13 November 1995 / Accepted 18 September 1996
We present the results of new near-infrared observations of the fields around a sample of 19 Herbig Ae/Be stars. The observations reveal the population of young stars that accompanies the formation of intermediate-mass stars.
The richness of the detected star clusters is investigated. We find a clear dependence of the richness of the cluster on the spectral type of the Herbig Ae/Be star, confirming that the mode of formation of intermediate-mass stars represents the transition between the high-mass and the low-mass modes. In particular, we find that the cluster nature of star formation appears at a significant (i.e. detectable) level for stars of B7 spectral type or earlier.
Key words: stars: formation stars: pre-main sequence infrared: stars open clusters: general
Send offprint requests to: L. Testi
Online publication: July 3, 1998