791 citations · 10.3k across the 226 of their papers we have counts for
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Characterization of the HD 17156 planetary system
M. Barbieri, R. Alonso, S. Desidera +11
AIMS : To improve the parameters of the HD 17156 system (peculiar due to the eccentric and long orbital period of its transiting planet) and constrain the presence of stellar compa…
Using SPICA Space Telescope to characterize Exoplanets
J. R. Goicoechea, B. Swinyard, G. Tinetti +26
We present the 3.5m SPICA space telescope, a proposed Japanese-led JAXA-ESA mission scheduled for launch around 2017. The actively cooled (<5 K), single aperture telescope and mono…
Detection of solar-like oscillations in the G5 subgiant mu-Herculis
A. Bonanno, S. Benatti, R. Claudi +4
A clear detection of excess of power, providing a substantial evidence for solar-like oscillations in the G5 subgiant \muher{}, is presented. This star was observed over seven nigh…
Field Camera Unit for WSO-UV: Phase A Study Report
I. Pagano, F. Bacciotti, L. Bedin +33
World Space Observatory UltraViolet (WSO-UV) is a multipurpose space observatory, made by a 170 cm aperture telescope, capable of UV high-resolution spectroscopy, long slit low-res…
Oscillations in Procyon A: First results from a multi-site campaign
S. Hekker, T. Arentoft, H. Kjeldsen +45
Procyon A is a bright F5IV star in a binary system. Although the distance, mass and angular diameter of this star are all known with high precision, the exact evolutionary state is…
Variable stars in the open cluster NGC 6791 and its surrounding field
F. De Marchi, E. Poretti, M. Montalto +7
Aims: This work presents a high--precision variability survey in the field of the old, super metal-rich open cluster NGC 6791. Methods: The data sample consists of more than 75,000…
The SARG Planet Search
S. Desidera, R. Gratton, M. Endl +6
In this chapter of the book "Planets in binaries" we summarize our recent work on the statistical properties of planets in binaries and the differences with respect to planets orbi…
A new search for planet transits in NGC 6791
M. Montalto, G. Piotto, S. Desidera +12
Context. Searching for planets in open clusters allows us to study the effects of dynamical environment on planet formation and evolution. Aims. Considering the strong dependence o…
Na-O Anticorrelation and Horizontal Branches. V. The Na-O anticorrelation in NGC 6441 from Giraffe spectra
R. G. Gratton, S. Lucatello, A. Bragaglia +16
We present an analysis of FLAMES-Giraffe spectra for several bright giants in NGC 6441, to investigate the presence and extent of the Na-O anticorrelation in this anomalous globula…
Na-O Anticorrelation and HB. IV. Detection of He-rich and He-poor stellar populations in the globular cluster NGC 6218
E. Carretta, A. Bragaglia, R. G. Gratton +9
We used the multifiber spectrograph FLAMES on the ESO Very Large Telescope UT2 to derive atmospheric parameters, metallicities and abundances of O and Na for 79 red giant stars in…
Seismology of Procyon A: determination of mode frequencies, amplitudes, lifetimes, and granulation noise
S. Leccia, H. Kjeldsen, A. Bonanno +3
The F5 IV-V star Procyon A (aCMi) was observed in January 2001 by means of the high resolution spectrograph SARG operating with the TNG 3.5m Italian telescope (Telescopio Nazionale…
The Integral Field Spectrograph of SPHERE: the Planet Finder for VLT
R. U. Claudi, M. Turatto, J. Antichi +14
SPHERE is an instrument designed and built by a consortium of French, German, Italian, Swiss and Dutch institutes in collaboration with ESO. The project is currently in its Phase B…
Asteroseismology of Procyon A with SARG at TNG
R. U. Claudi, A. Bonanno, S. Leccia +6
We present high precision radial velocity measurements on the F5 IV star alpha CMi obtained by the SARG spectrograph at TNG (Telescopio Nazionale Galileo) exploiting the iodine cel…
No Planet Around HD 219542 B
S. Desidera, R. G. Gratton, M. Endl +8
The star HD 219542 B has been reported by us (Desidera et al. 2003) to show low-amplitude radial velocity variations that could be due to the presence of a Saturn-mass planetary co…
Abundance differences between components of wide binaries
S. Desidera, R. Gratton, S. Scuderi +9
In this paper we present iron abundance analysis for 23 wide binaries with main sequence components in the temperture range 4900-6300 K, taken from the sample of the pairs currentl…
A search for planets in the metal-enriched binary HD 219542
S. Desidera, R. G. Gratton, M. Endl +6
The components of the wide binary HD 219542 were recently found to differ in metallicity by about 0.1 dex (Gratton et al. A&A 377, 123). In this paper, we present the results of 2…
Abundances for metal-poor stars with accurate parallaxes I. Basic data
Raffaele Gratton, Eugenio Carretta, Riccardo Claudi +2
We present element-to-element abundance ratios measured from high dispersion spectra for 150 field subdwarfs and early subgiants with accurate Hipparcos parallaxes (errors <20%). F…
The lithium content of the globular cluster NGC 6397
P. Bonifacio, L. Pasquini, F. Spite +16
We make use of high resolution, high signal-to-noise ratio spectra of 12 turn-off stars in the metal-poor globular cluster NGC 6397 to measure its lithium content. We conclude that…
Discovery of a bipolar and highly variable mass outflow from the symbiotic binary StHa 190
U. Munari, T. Tomov, B. F. Yudin +15
A highly and rapidly variable bipolar mass outflow from StHa 190 has been discovered, the first time in a yellow symbiotic star. Permitted emission lines are flanked by symmetrical…
The O-Na and Mg-Al Anticorrelations in Turn-Off and early Subgiants in Globular Clusters
R. G. Gratton, P. Bonifacio, A. Bragaglia +16
High dispersion spectra (R>40,000) for a quite large number of stars at the main sequence turn-off and at the base of the subgiant branch in NGC6397 and NGC6752 were obtained with…
Metal Abundances of Red Clump Stars in Open Clusters: I. NGC 6819
A. Bragaglia, E. Carretta, R. G. Gratton +10
We present an analysis of high dispersion spectra (R~40000) of three red clump stars in the old open cluster NGC 6819. The spectra were obtained with SARG, the high dispersion spec…