ICATE 21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Estimacion de la incerteza cinematica de los espectros obtenidos con REOSC (CAsLeo), Flamingos-2 y PHOENIX (Gemini) para observaciones de gas ionizado en galaxias
Autor/es:
GASPAR, G.; DIAZ, R. J.; GUNTHARDT, G.; AGUERO, M. P.; GIMENO, G.; CAMPERI, J.
Lugar:
La Plata
Reunión:
Congreso; Reunion Anual de la Asociacion Argentina de Astronomia; 2012
Institución organizadora:
Asociacion Argentina de Astronomia
Resumen:
The determination of the radial velocity curves of ionized gas in galaxies requires knowing the value of the internal kinematic uncer- tainly along the slit for the used spectrographs. We present preliminary results of the study of the variation of the measured radial velocity of the telluric and comparison emission lines in the spatial direction. This was done for the spectrographs REOSC, Flamingos-2 (F2) and Phoenix. In particular we are interested in using this data to homogenize the rota- tion curves of nearby galaxies in large-scale ranges. These results will be also useful as references for those works that measure radial velocities of extended objects using only one emission line of ionized gas.
