High-Velocity Gas in the Luminous H II Regions of NGC 1530

Relaño, M.; Beckman, J. E.; Zurita, A.; Rozas, M.; Knapen, J.
Bibliographical reference

Ionized Gaseous Nebulae, a Conference to Celebrate the 60th Birthdays of Silvia Torres-Peimbert and Manuel Peimbert, Mexico City, November 21-24, 2000 (Eds. W. J. Henney, J. Franco, M. Martos, & M. Peña) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 12, pp. 252-252 (2002) (http://www.astroscu.unam.mx/~rmaa/)

Advertised on:
2
2002
Number of authors
5
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We are carrying out a systematic study of the ensuremath {{H}alpha } emission line profiles from the H II regions in NGC 1530 (Knapen et al. 2001) based on a data cube from the TAURUS Fabry-Perot scanner, on the 4.2m WHT, La Palma. The data are of high S:N ratio, high spatial resolution (seeing ~ 0.6 arcsec ) and velocity resolution, FWHM, of 18 kms ensuremath {^{-1}} . The observations reveal, from the luminous regions, high velocity components forming low intensity wings to the intense emission peak. We cannot tell whether they are absent in the less luminous regions, or below the noise level. We detected similar high velocity features from M100, NGC 3359, and NGC 6951 (see e.g., Rozas et al. 1998).