PAH emission from Herbig AeBe stars (2008)
Keller, Luke D., Sloan, G. C., Forrest, W. J., Ayala, S., D'Alessio, P., Shah, S., ...
We present spectra of a sample of Herbig Ae and Be (HAeBe) stars obtained with the Infrared Spectrograph on the Spitzer Space Telescope. All but one of the Herbig stars show emission from polycyclic...
The physical structure of the point-symmetric and quadrupolar planetary nebula NGC 6309 (2008)
Vázquez, R., Miranda, L. F., Olguín, L., Ayala, S., Torrelles, J. M., Contreras, M. E., ...
We analyse the point-symmetric planetary nebula NGC 6309 in terms of its three-dimensional structure and of internal variations of the physical conditions to deduce the physical processes involved in...
S. Ayala, A. C. Raga, S. Curiel
in length and consists of numerous knots forming the ow. Noriega-Crespo et al. (1996) found that the turbulent optical and near-infrared morphology of the HH 110 jet is consistent with that of a...
An Optical Spectroscopic Study of HH 110: a Turbulent Mixing Layer? (2006)
A. C. Raga, S. Curiel, S. Ayala
An Optical Spectroscopic Study of HH 110: a Turbulent Mixing Layer?
Optical and Near Infrared Study of the Cepheus E Outflow, a Very Low Excitation Object (2004)
Noreiga-Crespo, A., Ayala, S., Garnavich, P., Curiel, S., Raga, A., Bohm, K., ...
In this study, we explore the link between the physical properties of the outflow as determined from optical imaging and spectroscopy, and compare these results with those obtained from observations...
Optical and Near Infrared Study of the Cepheus E outflow, a very low excitation object (2000)
Ayala, S., Noriega-Crespo, A., Garnavich, P. M., Curiel, S., Raga, A. C., Bohm, K. H., ...
We present images and spectra of the Cepheus E (Cep E) region at both optical and infrared wavelengths. Only the brightest region of the southern lobe of the Cep E outflow reveals optical emission,...