Search results for "astronomia"
showing 10 items of 673 documents
Sphera del vniuerso
1599
Conté amb portadella pròpia: Sphera de Iuan de Sacrobosco (f. 230-271) Signatures: [calderó]-2[calderó]4, A-B4, C-Mm8 Hi ha emisió amb peu d'imprempta: En Madrid : por Iuan de Herrera, 1599 amb canvis en els preliminars i portada, i una altra emissió d'aquesta amb el mateix peu d'impremta, però amb canvis en els preliminars i diferent quadern A⁴ Peu d'impremta també al colofó Portada amb vinyeta xilogràfica Text emmarcat dins filets i postil·les Caplletres gravades, postil·les marginals, reclams, vinyetes i orles xilogràfiques Retrat calcogràfic de l'autor signat "P. P. f.", figures xilogràfiques. al llarg del text i alguna caplletra ornada Gravats xilogràfics astronòmics i geogràfics inter…
Dialogus de systemate mundi
1635
Títol al frontispici: "Dialogus de systemate mundi, autore Galilæo Galilæi Lynceo, serenissimo Ferdinando II. Hetrur. magno-duci dicatus. Augustæ Treboc. Impensis Bonaventuræ et Abrahami Elzevir bibliopolar. Leydens. Anno S. 1635" Sign.: ):(4, a4, A-Z4, Aa-Zz4, Aaa-Ttt4 Frontispici calcogràfic representant a Copèrnic, Ptolemeu i Aristòtil En f. ):(4v retrat calcogràfic de l'autor: " Jac. Heyden sculp." Il·lustracions xilogràfiques intercalades en el text
Astronomica curiosa, y descripcion del mundo superior, y inferior : contiene la especulacion de los orbes, y globos de entrambas esferas ...
1677
Signartures: [ ]4, 2[creu grega]4, A-Z4, 2A-2E4, 2F2 Portadella Portada amb orla tipogràfica Nombrosos gravats xilogràfics intercalats en el text
The 4MOST Survey of Dwarf Galaxies and their Stellar Streams (4DWARFS)
2023
The present-day Milky Way is the result of a long history of mergers and interactions with smaller galaxies. The 4DWARFS survey will target the dwarf galaxies and stellar streams in the 4MOST footprint, and unveil their chrono-chemo-kinematical properties. The survey will provide radial velocities, chemical abundances and stellar ages for 140 000 stars, and thus increase the number of stars with detailed information in such systems by several orders of magnitude. 4DWARFS will provide a new, deeper view of the Milky Way environment, shedding light on the first stars, chemical evolution, dark matter halos, and hierarchical galaxy formation down to the smallest scales.
The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy
2009
Context. HD 181231 is a B5IVe star, which has been observed with the CoRoT satellite during ∼5 consecutive months and simultaneously from the ground in spectroscopy and spectropolarimetry. Aims. By analysing these data, we aim to detect and characterize as many pulsation frequencies as possible, to search for the presence of beating effects possibly at the origin of the Be phenomenon. Our results will also pr ovide a basis for seismic modelling. Methods. The fundamental parameters of the star are determined from spectral fitting and from the study of the circumstellar emission. The CoRoT photometric data and ground-based spectroscopy are analysed using several Fourier Techniques: CLEAN-NG,P…
The B0.5IVe CoRoT target HD 49 330. II. Spectroscopic ground-based observations
2009
Context. We present spectroscopic ground-based observations of the early Be star HD 49330 obtained simultaneously with the CoRoT-LRA1 run just before the burst observed in the CoRoT data. Aims. Ground-based spectroscopic observations of the early Be star HD 49330 obtained during the precursor phase and just before the start of an outburst allow us to disantangle stellar and circumstellar contributions and identify modes of stellar pulsations in this rapidly rotating star. Methods. Time series analysis (TSA) is performed on photospheric line profiles of He i and Si iii by means of the least squares method. Results. We find two main frequencies f1 = 11.86 c d^−1 and f2 = 16.89 c d^−1 which ca…
Recueil d'observations géodésiques, astronomiques et physiques / exécutées par ordre du Bureau des Longitudes de France en Espagne, en France, en…
1821
Histoire de l'astronomie a Toulouse : de l'origine a la fondation de l'observatoire actuel
Separata de: Annales de l'Observatoire de Toulouse, t.II
XIPE: the X-ray imaging polarimetry explorer
2013
arXiv:1309.6995v1.-- et al.
GW190521: A Binary Black Hole Merger with a Total Mass of 150 M⊙
2020
LIGO Scientific Collaboration and Virgo Collaboration: et al.