# Publicaciones

• A massive open cluster hiding in full sight

Obscuration and confusion conspire to limit our knowledge of the inner Milky Way. Even at moderate distances, the identification of stellar systems becomes compounded by the extremely high density of background sources. Here, we provide a very revealing example of these complications by unveiling a large, massive, young cluster in the Sagittarius

Negueruela, I. et al.

### Fecha de publicación:

8
2021
• Constraining the solar neighbourhood age-metallicity relation from white dwarf-main sequence binaries

The age-metallicity relation (AMR) is a fundamental tool for constraining the chemical evolution of the Galactic disc. In this work, we analyse the observational properties of this relation using binary stars that have not interacted consisting of a white dwarf (WD) - from which we can derive the total age of the system - and a main sequence (MS)

Rebassa-Mansergas, A. et al.

### Fecha de publicación:

8
2021
• Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey

We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of 19.7 ± 1.6 MJup and a radius of 1.47 ± 0.10 RJup, the first substellar object discovered by the Galactic Plane eXoplanet (GPX) survey. The brown dwarf transits a moderately bright (V = 12.3 mag) fast-rotating F-type star with a projected rotational velocity $v\sin {\, i_* Benni, P. et al. ### Fecha de publicación: 8 2021 • Early science with the Large Millimeter Telescope: a 1.1 mm AzTEC survey of red-Herschel dusty star-forming galaxies We present Large Millimeter Telescope (LMT)/AzTEC 1.1 mm observations of ~100 luminous high-redshift dusty star-forming galaxy candidates from the$\sim 600\,$sq.deg Herschel-ATLAS survey, selected on the basis of their SPIRE red far-infrared colours and with$S_{500\, \mu \rm m}=35-80$mJy. With an effective$\theta _{\rm FWHM}\approx 9.5\

Montaña, A. et al.

### Fecha de publicación:

8
2021
• The evolution of rapid optical/X-ray timing correlations in the initial hard state of MAXI J1820+070

We report on a multiepoch campaign of rapid optical/X-ray timing observations of the superbright 2018 outburst of MAXI J1820+070, a black hole low-mass X-ray binary system. The observations spanned 80 d in the initial hard state and were taken with NTT/ULTRACAM and GTC/HiPERCAM in the optical (usgsrsiszs filters at time resolutions of 8-300 Hz) and

Paice, J. A. et al.

### Fecha de publicación:

8
2021
• TOI-220 b: a warm sub-Neptune discovered by TESS

In this paper, we report the discovery of TOI-220 b, a new sub-Neptune detected by the Transiting Exoplanet Survey Satellite (TESS) and confirmed by radial velocity follow-up observations with the HARPS spectrograph. Based on the combined analysis of TESS transit photometry and high precision radial velocity measurements, we estimate a planetary

Hoyer, S. et al.

8
2021