116 citations · 1k across the 52 of their papers we have counts for
52 papers
Searching for nascent planetary nebulae: OHPNe candidates in the SPLASH survey
Roldán A. Cala, José F. Gómez, Luis F. Miranda +7
The evolution of asymptotic giant branch stars from the spherical symmetry into the diverse shapes of planetary nebulae (PNe) is a topic of intensive research. Young PNe provide a…
An episodically variable stellar wind in the planetary nebula IC\,4997
Luis F. Miranda, José M. Torrelles, Jorge Lillo-Box
IC\,4997 is a planetary nebula well known by its variability. We present high-resolution spectra of IC\,4997 obtained in 1993, 2019, and 2020 that reveal changes in the H and [N…
The reactivation of water maser emission in the planetary nebula IRAS 18061--2505 through a born-again episode
L. F. Miranda, O. Suárez, L. Olguín +12
Water maser emitting planetary nebulae (HO-PNe) are believed to be among the youngest PNe. We present new optical narrow- and broad-band images, intermediate- and high-resoluti…
Herbig Ae/Be stars towards the dark cloud LDN 1667
C. B. Pereira, L. F. Miranda, W. L. F. Marcolino
We report the discovery of a new emission-line object, named SPH4-South = (GAIA EDR3 5616553300192230272), towards the dark cloud LDN 1667. This object came to our attention after…
The morpho-kinematical structure and chemical abundances of the complex planetary nebula NGC 1514
Alba Aller, Roberto Vázquez, Lorenzo Olguín +2
We present high-resolution, long-slit optical spectra and images of the planetary nebula NGC1514. The position velocity maps of the [OIII] emission line reveal complex kinematics w…
Kinematical Investigation of Possible Fast Collimated Outflows in Twelve Planetary Nebulae
J. S. Rechy-García, M. A. Guerrero, S. Duarte Puertas +3
A significant fraction of planetary nebulae (PNe) exhibit collimated outflows, distinct narrow kinematical components with notable velocity shifts with respect to the main nebular…