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Triggered massive star formation in the open cluster NGC 1893

Published online by Cambridge University Press:  26 May 2016

Amparo Marco  and
Ignacio Negueruela
Amparo Marco
Affiliation:
Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Univ. de Alicante, Apdo. de Correos 99, E-03080 Alicante, España
Ignacio Negueruela
Affiliation:
Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Univ. de Alicante, Apdo. de Correos 99, E-03080 Alicante, España

Abstract

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We have carried out a search for emission line pre-main sequence (PMS) stars in the area of the star-forming young open cluster NGC 1893 by means of slitless spectroscopy. We find 19 emission line stars with spectral types spanning the range from early B-type to G-type. All the PMS stars are confined to two small regions: the outer rim of the molecular cloud associated with the H ii region IC 410 and the vicinity of the bright emission cometary nebulae Sim 129 and Sim 130. The overall spatial distribution of PMS stars strongly suggests, that present day star formation in NGC 1893 is triggered by the O-type stars in the cluster.

Type
Part 3. Location and Distribution of Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 562 - 563
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Marco, A., Bernabeu, G., Negueruela, I. 2001, AJ 121, 2075.CrossRefGoogle Scholar
Marco, A., Negueruela, I. 2002, A&A 393, 195.Google Scholar