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Optical and Near–Infrared Spectroscopy of the Emission Line Young Stellar Object Gy 2-18 (HHL 31)

Published online by Cambridge University Press:  12 April 2016

Paolo Persi ,
Vito Francesco Polcaro ,
Joaquin Bohigas  and
Mauricio Tapia
Paolo Persi
Affiliation:
Istituto di Astrofisica Spaziale, CNR, Roma, Italy
Vito Francesco Polcaro
Affiliation:
Istituto di Astrofisica Spaziale, CNR, Roma, Italy
Joaquin Bohigas
Affiliation:
Istituto di Astrofisica Spaziale, CNR, Roma, Italy
Mauricio Tapia
Affiliation:
Istituto di Astrofisica Spaziale, CNR, Roma, Italy

Abstract

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We present the results of optical and near–IR spectroscopy of the massive young star associated with the extended reflection nebula Gy 2-18 (HHL31). The optical spectrum between 4000-5000 Å suggests a B0-B2 classification for this object. In addition the Hα line profile indicate the presence of a consistent stellar wind with a velocity of the order of 1200 km/s. The near-IR spectrum is dominated by the presence of the hydrogen recombination emission lines (Pfund and Bracket series). The measured line intensities of these lines are in agreement with the presence of a strong stellar wind in Gy2-18.

Information

Type
6. Disks
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 498 - 501
Copyright
Copyright © Astronomical Society of the Pacific 2000

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