INFRARED SPECTROSCOPY OF INTERMEDIATE-MASS YOUNG STELLAR OBJECTS

Broad band infrared spectroscopy of massive young stellar objects

We present intermediate resolution 0.9–2.5μm IR spectra of 12 highly reddened stars, including some well known and some unfamiliar sources. A new technique for extracting calibration curves from standard star data is employed, and is found to be very successful. The reddening to each object is fully discussed and is calculated from both the continua (which was split into shortand long-wavelengt...

Infrared Classi cation of Young Stellar Objects

Spectroscopy of Stellar Jets, Outflows, and Young Stellar Objects with the Infrared Space Observatory

The Infrared Space Observatory (ISO) was an extremely successful european space mission that gave us an unparallel view of the Universe in the infrared, and provided us with hundreds of observations of star forming regions and bipolar outflows. Three of the instrument teams, in charge of the infrared camera (CAM) and the two spectrometers at short and long wavelengths (SWS and LWS respectively)...

Near–Infrared Spectroscopy and Young Stellar Populations

Over the past decade, tremendous progress has been made in applying the techniques of MK classification to spectra obtained from 1–5 μm. This spectral region is rich in atomic and molecular features which are temperature and luminosity sensitive providing a powerful technique to study intrinsically red and/or heavily dust embedded stellar populations. We will summarize recent work with particul...

Near-Infrared Spectroscopy of Very Low-Luminosity Young Stellar Objects in the Taurus Molecular Cloud

We have carried out near-infrared spectroscopic observations of 23 very low-luminosity young stellar object (YSO) candidates and 5 their companions in Heiles Cloud 2, one of the densest parts of the Taurus molecular cloud. Twelve objects were confirmed as YSOs by Brγ feature. The effective temperatures of the YSOs and of the companions are estimated from the 2.26 μm feature, the 2.21 μm feature...