Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998larm.confe..84s&link_type=abstract
"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199
Astronomy and Astrophysics
Astronomy
Scientific paper
We have made a statistical study of Herbig Ae/Be stars (HAeBe), a class of intermediate-mass young stellar objects. In our work we intend to increase the number of candidates with confirmed HAeBe nature, as only about a hundred of objects is known. The "Pico dos Dias Survey", a search for T Tauri stars (TT) based on IRAS colors, has revealed several new TT, as well other very interesting objects, like a hundred of probable new HAeBe. These candidates have been classified by their strong Hα emission, spectral type earlier than F5 and infrared excess similar to TT. In order to confirm the young nature of these candidates, we have obtained low-resolution spectra and UBVRI photometry for a sample of 30 candidates to study their spectral energy distribution. A model to fit the spectral energy distribution (SED) has been used in order to determine the effective temperature and the luminosity, useful to estimate mass and age, and better classify our candidates. The distribution of the circumstellar material has been also inspected by using our model of SED's fit.
Gregorio-Hetem Jane
Sartori Marilia J.
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