An atlas of IUE far ultraviolet spectra of T Tauri and Herbig Ae/Be stars

We present an atlas of IUE low-dispersion short-wavelength spectra of pre-main sequence stars. These spectra are co-additions of all useful images that have been reprocessed with the NEWSIPS software. We have identified 128 objects observed by IUE, including 50 T Tauri stars and 78 Herbig Ae/Be stars. Our atlas consists of co-added spectra for each star based on the 663 usable spectra available from the IUE Final Archive. Our objective is to obtain the highest quality spectra of these stars and to extract fluxes of the broad range of emission features produced in the atmospheres and disks of different kinds of PMS stars. These spectral features consist of emission lines formed at temperatures as high as 150,000 K (N V), molecular features (e.g., H-2), nonstellar continua in classical TTS, and absorption lines formed in the hotter stars.