THE YOUNG STELLAR POPULATION OF LYNDS 1340. AN INFRARED VIEW

The Interstellar Medium of Young Stellar Clusters from the Mid-Infrared Point of View

Effects of young stellar clusters on their gas and dust environment are probed using mid-infrared (MIR) wavelengths. The strong MIR [NeIII]/[NeII] ratios (∼ 5 to 10) reveal the presence of current massive stars less than 5Myr. Using MIR line ratios along with optical and NIR data from the literature, composite SEDs are constructed for NGC 1569, NGC 1140 and II Zw40. The stellar SEDs are then us...

Infrared Classi cation of Young Stellar Objects

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...

Modeling the Near-Infrared Luminosity Functions of Young Stellar Clusters

We present the results of numerical experiments designed to evaluate the usefulness of near-infrared luminosity functions for constraining the Initial Mass Function (IMF) of young stellar populations. We test the sensitivity of the near-infrared K band luminosity function (KLF) of a young stellar cluster to variations in the underlying IMF, star forming history, and pre-main sequence mass-to-lu...

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)...