J. A. Pérez-Prieto

TOI-2015 b: A sub-Neptune in strong gravitational interaction with an outer non-transiting planet

Khalid Barkaoui, J. Korth, E. Gaidos, E. Agol et autres

TOI-2015 is a known exoplanetary system around an M4 dwarf star, consisting of a transiting sub-Neptune planet in a 3.35-day orbital period, TOI-2015 b, accompanied by a non-transiting companion, TOI-2015 c. High-precision radial-velocity measurements were taken with the MAROON-X spectrograph, and high-precision …

us, be, es, se, at, jp, ch, it, cl, de, tr, au, fr, gb, Maroc, mx, nl, gr (code pays fourni par la source)

TOI-2015b: a sub-Neptune in strong gravitational interaction with an outer non-transiting planet

Khalid Barkaoui, J. Korth, E. Gaidos, E. Agol et autres

TOI-2015 is a known exoplanetary system around an M4 dwarf star, consisting of a transiting sub-Neptune planet in a 3.35-day orbital period, TOI-2015b, accompanied by a non-transiting companion, TOI-2015c. High-precision RV measurements were taken with the MAROON-X spectrograph, and high-precision photometric data …

VizieR Online Data Catalog: New companions to nearby low-mass stars (Jodar+, 2013)

Esther Jódar, A. Pérez‐Garrido, A. Díaz‐Sánchez, Isidro Villó-Pérez et autres

The IACOB spectroscopic database: recent updates and first data release

S. Simón‐Díaz, I. Negueruela, J. Maíz Apellániz, N. Castro et autres

The IACOB project is an ambitious long-term project which is contributing to step forward in our knowledge about the physical properties and evolution of Galactic massive stars. The project aims at building a large database of high-resolution, multi-epoch, spectra of Galactic OB …

es (code pays fourni par la source)

The IACOB spectroscopic database: Recent updates and first data release

S. Simón‐Díaz, I. Negueruela, J. Maíz Apellániz, N. Castro et autres

The IACOB project is an ambitious long-term project which is contributing to step forward in our knowledge about the physical properties and evolution of Galactic massive stars. The project aims at building a large database of high-resolution, multi-epoch, spectra of Galactic OB …

es (code pays fourni par la source)

The Adaptive Optics Lucky Imager: Diffraction limited imaging at visible wavelengths with large ground-based telescopes

Jonathan Crass, Craig Mackay, David L. King, R. Rébolo et autres

Experimental validation of Lyot stop apodization in ground-based coronagraphy

Miguel A. Cágigas, Pedro J. Valle, Manuel P. Cagigal, Xesús Prieto-Blanco et autres

We show that the use of apodizing functions at the coronagraph Lyot plane may be useful for improving the image contrast of ground-based coronagraphs. An experimental set-up consisting of a tip–tilt mirror, a coronagraph and a low-noise EMCCD camera was implemented at …

es (code pays fourni par la source)

VizieR Online Data Catalog: VI photometry of M15 core (Diaz-Sanchez+, 2012)

A. Díaz‐Sánchez, A. Pérez‐Garrido, Isidro Villó-Pérez, R. Rébolo et autres

New companions to nearby low-mass stars

Esther Jódar, A. Pérez‐Garrido, A. Díaz‐Sánchez, Isidro Villó-Pérez et autres

We present high-angular-resolution optical I-band imaging of 451 late K to mid-M nearby stars. These observations have been performed with Astralux and FastCam using the lucky imaging technique. We found 70 companions with separations between 0.1 and 3.5 arcsec, out of which …

es (code pays fourni par la source)

High-contrast optical imaging of companions: the case of the brown dwarf binary HD 130948BC

Lucas Labadie, R. Rébolo, Isidro Villó-Pérez, J. A. Pérez-Prieto et autres

High contrast imaging at optical wavelengths is limited by the modest correction of conventional near-IR optimized AO systems.We take advantage of new fast and low-readout-noise detectors to explore the potential of fast imaging coupled to post-processing techniques to detect faint companions to …

es, fr, de (code pays fourni par la source)

Lucky Imaging Adaptive Optics of the brown dwarf binary GJ569Bab

Bruno Femenía, R. Rébolo, J. A. Pérez-Prieto, Lucas Labadie et autres

The potential of combining Adaptive Optics (AO) and Lucky Imaging (LI) to achieve high precision astrometry and differential photometry in the optical is investigated by conducting observations of the close 0. ′′ 1 brown dwarf binary GJ569Bab.We took 50000 I-band images with …

es, fr, de (code pays fourni par la source)

High spatial resolution and high contrast optical speckle imaging with FASTCAM at the ORM

Lucas Labadie, R. Rébolo, Bruno Femenía, Isidro Villó-Pérez et autres

In this paper, we present an original observational approach, which combines, for the first time, traditional speckle imaging with image post-processing to obtain in the optical domain diffraction-limited images with high contrast (10-5) within 0.5 to 2 arcseconds around a bright star. …

es, fr, de (code pays fourni par la source)