119 citations · 545 across the 21 of their papers we have counts for
22 papers
Identification of unresolved binaries in the VVV b294 tile: A Pro-Am collaboration using the Virtual Observatory
M. Cortés-Contreras, P. Cruz, E. Solano +22
Stellar binaries and multiples are common objects. Their identification and characterization are primarily limited by the angular resolution of current instrumentation, survey dept…
White dwarf spectral type-temperature distribution from Gaia-DR3 and the Virtual Observatory
S. Torres, P. Cruz, R. Murillo-Ojeda +6
The characterization of white dwarf atmospheres is crucial for accurately deriving stellar parameters such as effective temperature, mass, and age. We aim to classify the populatio…
Searching for the nature of stars with debris disks and planets
R. de la Reza, C. Chavero, S. Roca-Fàbrega +3
The nature of the few known solar-mass stars simultaneously containing debris disks and planets remains an open question. A number of works have shown that this property appears to…
M-dwarf stars in the b294 field from the VISTA Variables in the Vía Láctea (VVV)
Patricia Cruz, Miriam Cortés-Contreras, Enrique Solano +4
M-dwarf stars are the dominant stellar population in the MilkyWay and they are important for a wide variety of astrophysical topics. The Gaia mission has delivered a superb collect…
Spectral classification of the 100 pc white dwarf population from Gaia-DR3 and the Virtual Observatory
F. M. Jiménez-Esteban, S. Torres, A. Rebassa-Mansergas +5
The third data release of Gaia has provided low resolution spectra for ~100,000 white dwarfs (WDs) that, together with the excellent photometry and astrometry, represent an unrival…
The miniJPAS survey: stellar atmospheric parameters from 56 optical filters
H. -B. Yuan, L. Yang, P. Cruz +29
With a unique set of 54 overlapping narrow-band and two broader filters covering the entire optical range, the incoming Javalambre-Physics of the Accelerating Universe Astrophysica…
J-PLUS: Discovery and characterisation of ultracool dwarfs using Virtual Observatory tools II. Second data release and machine learning methodology
P. Mas-Buitrago, E. Solano, A. González-Marcos +20
Ultracool dwarfs (UCDs) comprise the lowest mass members of the stellar population and brown dwarfs, from M7 V to cooler objects with L, T, and Y spectral types. Most of them have…
Detached eclipsing binaries from the Kepler field: radii and photometric masses of components in short-period systems
Patricia Cruz, John F. Aguilar, Hernán E. Garrido +2
The characterisation of detached eclipsing binaries with low mass components has become important when verifying the role of convection in stellar evolutionary models, which requir…
Gaia0007-1605: an old triple system with an inner brown dwarf-white dwarf binary and an outer white dwarf companion
Alberto Rebassa-Mansergas, Siyi Xu, Roberto Raddi +5
We identify Gaia0007-1605AC as the first inner brown dwarf-white dwarf binary of a hierarchical triple system in which the outer component is another white dwarf (Gaia0007-1605B).…
The radius inflation problem in short-period low-mass binaries: a large sample analysis
Hernan E. Garrido, Patricia Cruz, Marcos P. Diaz +1
Due to the recent increase in the availability of photometric time-series databases, the characterisation of low-mass eclipsing binaries for the study of their orbital and physical…
Low-mass eclipsing binaries in the WFCAM Transit Survey: the persistence of the M-dwarf radius inflation problem
Patricia Cruz, Marcos Diaz, Jayne Birkby +3
We present the characterization of 5 new short-period low-mass eclipsing binaries from the WFCAM Transit Survey. The analysis was performed by using the photometric WFCAM J-mag dat…
Detection of the secondary eclipse of Qatar-1b in the Ks band
Patricia Cruz, David Barrado, Jorge Lillo-Box +4
Qatar-1b is a close-orbiting hot Jupiter ( , ) around a metal-rich K-dwarf, with orbital separation and period of 0.023 AU and 1.42 days.…
Detection of the secondary eclipse of WASP-10b in the Ks-band
Patricia Cruz, David Barrado, Jorge Lillo-Box +5
WASP-10b, a non-inflated hot Jupiter, was discovered around a K-dwarf in a near circular orbit (). Since its discovery in 2009, different published parameters for this…
The first planet detected in the WTS: an inflated hot-Jupiter in a 3.35 day orbit around a late F-star [ERRATUM]
M. Cappetta, R. P. Saglia, J. L. Birkby +35
We report the discovery of WTS-1b, the first extrasolar planet found by the WFCAM Transit Survey, which began observations at the 3.8-m United Kingdom Infrared Telescope (UKIRT) in…
WTS-2 b: a hot Jupiter orbiting near its tidal destruction radius around a K-dwarf
J. L. Birkby, M. Cappetta, P. Cruz +34
We report the discovery of WTS-2 b, an unusually close-in 1.02-day hot Jupiter (Mp=1.12MJ, Rp=1.363RJ) orbiting a K2V star, which has a possible gravitationally-bound M-dwarf compa…
A sensitivity analysis of the WFCAM Transit Survey for short-period giant planets around M dwarfs
Gábor Kovács, S. Hodgkin, B. Sipőcz +11
The WFCAM Transit Survey (WTS) is a near-infrared transit survey running on the United Kingdom Infrared Telescope (UKIRT), designed to discover planets around M dwarfs. The WTS act…
Properties of ultra-cool dwarfs with Gaia. An assessment of the accuracy for the temperature determination
Luis M. Sarro, Angel Berihuete, Cesar Carrion +3
We aimed to assess the accuracy of the Gaia teff and logg estimates as derived with current models and observations. We assessed the validity of several inference techniques for de…
First T dwarfs in the VISTA Hemisphere Survey
N. Lodieu, B. Burningham, A. Day-Jones +21
The aim of the project is to improve our current knowledge of the density of T dwarfs and the shape of the substellar initial mass function by identifying a magnitude-limited sampl…
The first planet detected in the WTS: an inflated hot-Jupiter in a 3.35 day orbit around a late F-star
M. Cappetta, R. P. Saglia, J. L. Birkby +36
We report the discovery of WTS-1b, the first extrasolar planet found by the WFCAM Transit Survey, which began observations at the 3.8-m United Kingdom Infrared Telescope. Light cur…
Four ultra-short period eclipsing M-dwarf binaries in the WFCAM Transit Survey
S. V. Nefs, J. L. Birkby, I. A. G. Snellen +16
We report on the discovery of four ultra-short period (P<0.18 days) eclipsing M-dwarf binaries in the WFCAM Transit Survey. Their orbital periods are significantly shorter than of…
Overlapping abundance gradients and azimuthal gradients related to the spiral structure of the Galaxy
J. R. D. Lepine, P. Cruz, S. Scarano +6
The connection between some features of the metallicity gradient in the Galactic disk, best revealed by Open Clusters and Cepheids, and the spiral structure, is explored. The step-…
Search for Planetary Candidates within the OGLE Stars
Adriana V. R. Silva, Patricia C. Cruz
We propose a method to distinguish between planetary and stellar companions to stars which present a periodic decrease in brightness, interpreted as a transit. Light curves from a…