Search Results - "Buchschacher, N"
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1
Three years of Sun-as-a-star radial-velocity observations on the approach to solar minimum
Published in Monthly notices of the Royal Astronomical Society (21-07-2019)“…Abstract The time-variable velocity fields of solar-type stars limit the precision of radial-velocity determinations of their planets’ masses, obstructing…”
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2
HARPS-N Solar RVs Are Dominated by Large, Bright Magnetic Regions
Published in The Astrophysical journal (20-03-2019)“…State-of-the-art radial-velocity (RV) exoplanet searches are currently limited by RV signals arising from stellar magnetic activity. We analyze solar…”
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3
The hot Neptune WASP-166 b with ESPRESSO – III. A blue-shifted tentative water signal constrains the presence of clouds
Published in Monthly notices of the Royal Astronomical Society (01-05-2023)“…ABSTRACT With high-resolution spectroscopy, we can study exoplanet atmospheres and learn about their chemical composition, temperature profiles, and presence…”
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4
The hot Neptune WASP-166 b with ESPRESSO II: confirmation of atmospheric sodium
Published in Monthly notices of the Royal Astronomical Society. Letters (01-06-2022)“…ABSTRACT The hot Neptune desert, a distinct lack of highly irradiated planets in the size range of Neptune, remains one of the most intriguing results of…”
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5
WASP-131 b with ESPRESSO – I. A bloated sub-Saturn on a polar orbit around a differentially rotating solar-type star
Published in Monthly notices of the Royal Astronomical Society (02-05-2023)“…ABSTRACT In this paper, we present observations of two high-resolution transit data sets obtained with ESPRESSO of the bloated sub-Saturn planet WASP-131 b. We…”
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6
The Hot Neptune WASP-166 b with ESPRESSO – I. Refining the planetary architecture and stellar variability
Published in Monthly notices of the Royal Astronomical Society (24-08-2022)“…ABSTRACT In this paper, we present high-resolution spectroscopic transit observations from ESPRESSO of the super-Neptune WASP-166 b. In addition to…”
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7
GIARPS@TNG: GIANO-B and HARPS-N together for a wider wavelength range spectroscopy
Published in European physical journal plus (01-08-2017)“… Since 2012, thanks to the installation of the high-resolution echelle spectrograph in the optical range HARPS-N, the Italian telescope TNG (La Palma) became…”
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8
The hot Neptune WASP-166 b with ESPRESSO III: A blue-shifted tentative water signal constrains the presence of clouds
Published 09-02-2023“…With high-resolution spectroscopy we can study exoplanet atmospheres and learn about their chemical composition, temperature profiles, and presence of clouds…”
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9
The Hot Neptune WASP-166 b with ESPRESSO II: Confirmation of atmospheric sodium
Published 08-03-2022“…The hot Neptune desert, a distinct lack of highly irradiated planets in the size range of Neptune, remains one of the most intriguing results of exoplanet…”
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10
WASP-131 b with ESPRESSO I: A bloated sub-Saturn on a polar orbit around a differentially rotating solar-type star
Published 24-04-2023“…In this paper, we present observations of two high-resolution transit datasets obtained with ESPRESSO of the bloated sub-Saturn planet WASP-131~b. We have…”
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11
Exploring the stellar surface phenomena of WASP-52 and HAT-P-30 with ESPRESSO
Published 21-04-2023“…A&A 674, A174 (2023) We analyse spectroscopic and photometric transits of the hot Jupiters WASP-52b and HAT-P30b obtained with ESPRESSO, Eulercam and NGTS for…”
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12
The Hot Neptune WASP-166~b with ESPRESSO I: Refining the Planetary Architecture and Stellar Variability
Published 20-07-2022“…In this paper, we present high-resolution spectroscopic transit observations from ESPRESSO of the super-Neptune WASP-166~b. In addition to spectroscopic…”
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13
The GAPS programme at TNG XXX. Atmospheric Rossiter-McLaughlin effect and atmospheric dynamics of KELT-20b
Published 18-03-2021“…A&A 649, A29 (2021) Transiting ultra-hot Jupiters are ideal candidates to study the exoplanet atmospheres and their dynamics, particularly by means of…”
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14
Detection Limits of Low-mass, Long-period Exoplanets Using Gaussian Processes Applied to HARPS-N Solar RVs
Published 03-06-2021“…AJ 161 287 (2021) Radial velocity (RV) searches for Earth-mass exoplanets in the habitable zone around Sun-like stars are limited by the effects of stellar…”
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15
Three Years of HARPS-N High-Resolution Spectroscopy and Precise Radial Velocity Data for the Sun
Published 06-05-2021“…A&A 648, A103 (2021) The solar telescope connected to HARPS-N has been observing the Sun since the summer of 2015. Such high-cadence, long-baseline data set is…”
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16
Analytical determination of orbital elements using Fourier analysis. I. The radial velocity case
Published 08-04-2016“…A&A 590, A134 (2016) We describe an analytical method for computing the orbital parameters of a planet from the periodogram of a radial velocity signal. The…”
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The GAPS Programme at TNG XXI -- A GIARPS case-study of known young planetary candidates: confirmation of HD 285507 b and refutation of AD Leo b
Published 24-02-2020“…A&A 638, A5 (2020) The existence of hot Jupiters is still not well understood. Two main channels are thought to be responsible for their current location: a…”
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18
Three years of Sun-as-a-star radial-velocity observations on the approach to solar minimum
Published 27-04-2019“…The time-variable velocity fields of solar-type stars limit the precision of radial-velocity determinations of their planets' masses, obstructing detection of…”
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Journal Article -
19
HARPS-N Solar Radial-Velocity Variations Are Dominated By Large, Bright Magnetic Regions
Published 11-02-2019“…State of the art radial-velocity (RV) exoplanet searches are currently limited by RV signals arising from stellar magnetic activity. We analyze solar…”
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20
GIARPS: commissioning and first scientific results
Published 09-08-2018“…GIARPS (GIAno \& haRPS) is a project devoted to have on the same focal station of the Telescopio Nazionale Galileo (TNG) both high resolution spectrographs,…”
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