Search Results - "Mascareño, Alejandro Suárez"
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Fundamental physics with ESPRESSO: a new determination of the D/H ratio towards PKS1937-101
Published in Monthly notices of the Royal Astronomical Society (06-03-2024)“…ABSTRACT Primordial abundances of light elements are sensitive to the physics of the early Universe and can directly constrain cosmological quantities, such as…”
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Isotopic abundance of carbon in the DLA towards QSO B1331+170
Published in Monthly notices of the Royal Astronomical Society (13-09-2024)“…ABSTRACT Chemical evolution models predict a gradual build-up of 13C in the Universe, based on empirical nuclear reaction rates and assumptions on the…”
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A crucial test for astronomical spectrograph calibration with frequency combs
Published in Nature astronomy (01-06-2020)“…Laser frequency combs (LFCs) are well on their way to becoming the next-generation calibration sources for precision astronomical spectroscopy 1 – 6 . This…”
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Fundamental physics with ESPRESSO: Precise limit on variations in the fine-structure constant towards the bright quasar HE 0515$-$4414
Published 10-12-2021“…A&A 658, A123 (2022) The strong intervening absorption system at redshift 1.15 towards the very bright quasar HE 0515$-$4414 is the most studied absorber for…”
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A crucial test for astronomical spectrograph calibration with frequency combs
Published 20-02-2020“…Nature Astronomy (2020) Laser frequency combs (LFCs) are well on their way to becoming the next-generation calibration sources for precision astronomical…”
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Fundamental physics with Espresso: Towards an accurate wavelength calibration for a precision test of the fine-structure constant
Published 27-11-2020“…A&A 646, A144 (2021) Observations of metal absorption systems in the spectra of distant quasars allow to constrain a possible variation of the fine-structure…”
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Fundamental physics with ESPRESSO: a new determination of the D/H ratio towards PKS1937-101
Published 08-02-2024“…Primordial abundances of light elements are sensitive to the physics of the early Universe and can directly constrain cosmological quantities, such as the…”
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New Mass and Radius Constraints on the LHS 1140 Planets -- LHS 1140 b is Either a Temperate Mini-Neptune or a Water World
Published 23-10-2023“…The two-planet transiting system LHS 1140 has been extensively observed since its discovery in 2017, notably with $Spitzer$, HST, TESS, and ESPRESSO, placing…”
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Fundamental Physics with ESPRESSO, Constraining a simple parametrisation for varying $\alpha
Published 06-04-2022“…A&A 666, A57 (2022) The spectrograph ESPRESSO recently obtained a limit on the variation of the fine-structure constant, $\alpha$, through measurements along…”
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Nightside condensation of iron in an ultrahot giant exoplanet
Published in Nature (London) (30-04-2020)“…Ultrahot giant exoplanets receive thousands of times Earth’s insolation 1 , 2 . Their high-temperature atmospheres (greater than 2,000 kelvin) are ideal…”
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Ground-breaking Exoplanet Science with the ANDES spectrograph at the ELT
Published 27-11-2023“…In the past decade the study of exoplanet atmospheres at high-spectral resolution, via transmission/emission spectroscopy and cross-correlation techniques for…”
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