259 citations · 463 across the 16 of their papers we have counts for
14 papers · 1 filter
JWST/MIRI Study of the Enigmatic Mid-Infrared Rings in the Planetary Nebula NGC 1514
Michael E. Ressler, Alba Aller, David Jones +3
While NGC 1514 is an elliptical, but complex, planetary nebula at optical wavelengths, it was discovered to have a pair of infrared-bright, axisymmetric rings contained within its…
Advanced Classification of Hot Subdwarf Binaries Using Artificial Intelligence Techniques and Gaia DR3 data
C. Viscasillas Vázquez, E. Solano, A. Ulla +11
Hot subdwarfs are compact blue evolved objects, burning helium in their cores surrounded by a tiny hydrogen envelope. Most models agree on a common envelope binary evolution scenar…
Planetary nebulae seen with TESS: New and revisited short-period binary central star candidates from Cycles 1 to 4
Alba Aller, Jorge Lillo-Box, David Jones
High-precision and high-cadence photometric surveys such as Kepler or TESS are making huge progress not only in the detection of new extrasolar planets but also in the study of a g…
Photometric segregation of dwarf and giant FGK stars using the SVO Filter Profile Service and photometric tools
Carlos Rodrigo, Patricia Cruz, John F. Aguilar +18
This paper is focused on the segregation of FGK dwarf and giant stars through narrow-band photometric data using the Spanish Virtual Observatory (SVO) Filter Profile Service and as…
Identification of new hot subdwarf binary systems by means of Virtual Observatory tools
E. Solano, A. Ulla, E. Pérez-Fernández +7
The estimation of the binary fraction of hot subdwarfs is key to shed light on the different evolution scenarios proposed to explain the loss of the hydrogen envelope during the re…
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…
Planetary nebulae seen with TESS: Discovery of new binary central star candidates from Cycle 1
A. Aller, J. Lillo-Box, D. Jones +2
It is now clear that binarity plays a crucial role in many aspects of planetary nebulae (PNe), particularly the striking morphologies they exhibit. To date, there are ~60 known bCS…
A new look inside Planetary Nebula LoTr 5: A long-period binary with hints of a possible third component
A. Aller, J. Lillo-Box, M. Vučković +5
LoTr 5 is a planetary nebula with an unusual long-period binary central star. As far as we know, the pair consists of a rapidly rotating G-type star and a hot star, which is respon…
The long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5
David Jones, Hans Van Winckel, Alba Aller +2
The importance of long-period binaries on the formation and evolution of planetary nebulae is still rather poorly understood, in part due to the lack of central star systems known…
GTC/OSIRIS observations of RWT 152, a case study of a planetary nebula with an sdO central star
A. Aller, L. F. Miranda, L. Olguín +2
RWT 152 is one of the few planetary nebula with an sdO central star. We present subarcsecond red tunable filter imaging and intermediate-resolution, long-slit spectroscopy of RWT 1…
Spectral analysis of BD+30623, the peculiar binary central star of the planetary nebula NGC 1514
A. Aller, B. Montesinos, L. F. Miranda +2
NGC 1514 is a complex planetary nebula with a peculiar binary central star (BD+30623) consisting of a cool star and a hot companion. To date, the parameters of the two st…
The physical structure of planetary nebulae around sdO stars: Abell36, DeHt2, and RWT152
A. Aller, L. F. Miranda, L. Olguín +5
We present narrow-band Halpha and [OIII] images, and high-resolution, long-slit spectra of the planetary nebulae (PNe) Abell36, DeHt2, and RWT152 aimed at studying their morphology…
Detection of a multi-shell planetary nebula around the hot subdwarf O-type star 2MASS J19310888+4324577
A. Aller, L. F. Miranda, A. Ulla +8
(Abridged) The origin of hot subdwarf O-type stars (sdOs) remains unclear since their discovery in 1947. Among others, a post-Asymptotic Giant Branch (post-AGB) origin is possible…
Rule or exception? Planetary nebulae around hot subdwarf stars
A. Aller, L. F. Miranda, A. Ulla +4
In this work, we present the first results of an ongoing survey to search for planetary nebulae (PNe) around hot subdwarf stars (sdOs). Deep images and intermediate-resolution long…