Alberto Vecchiato | Istituto Nazionale di Astrofisica (original) (raw)
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Papers by Alberto Vecchiato
Undergraduate lecture notes in physics, 2017
Undergraduate lecture notes in physics, 2017
One of the powerful features of the variational approach is its generality. It is in fact based o... more One of the powerful features of the variational approach is its generality. It is in fact based on a simple principle, stating that physical laws share the common characteristics of minimizing the action of a system, and as we have seen this can be applied to mechanics (i.e., the dynamics of particles) as well as to the dynamics of fields.
Undergraduate lecture notes in physics, 2017
Undergraduate lecture notes in physics, 2017
We know that, contrary to electromagnetism, the Newtonian theory of gravity is compatible with Ne... more We know that, contrary to electromagnetism, the Newtonian theory of gravity is compatible with Newtonian dynamics, and because we have just realized that the latter has to be replaced by special relativity, it is easy to understand that the former has to be superseded by another theory of gravity which is compatible with the new dynamics.
The Thirteenth Marcel Grossmann Meeting, 2014
The Astronomical Journal, 2011
IAU General Assembly, Aug 1, 2015
Monthly Notices of the Royal Astronomical Society, 2013
Undergraduate Lecture Notes in Physics, 2017
We combine new BV photometry with the spectroscopic observations of the Gaia-ESO Survey to study ... more We combine new BV photometry with the spectroscopic observations of the Gaia-ESO Survey to study the open cluster NGC6 705. 1028 stars were observed with the HR15n grating of the GIRAFFE instrument at VLT/UT2. The radial velocities obtained for those stars were used to derive membership probabilities. (1 data file)
IAU General Assembly, Aug 1, 2015
Journal of Astronomical History and Heritage, Apr 1, 2018
In this paper we give an historical presentation of the role of women at the Astronomical Observa... more In this paper we give an historical presentation of the role of women at the Astronomical Observatory of Turin, showing their scientific work and interests, and how their role evolved with time. This exposition is put in its appropriate context with a short summary of the history of the Observatory. In the end we try to give a possible recount of the events that triggered the beginning of female participation in the research and the life of this institution and explain its peculiar character.
Understanding Gaia, 2019
The construction of the Gaia satellite was entrusted to EADS Astrium, now Airbus Defence and Spac... more The construction of the Gaia satellite was entrusted to EADS Astrium, now Airbus Defence and Space, and was begun in 2006 in Toulouse, France. While Astrium was the prime contractor, the development and construction of the spacecraft involved many smaller subcontractors dealing with several different parts, like the CCDs of the focal plane, which were provided by the UK’s e2v Technologies, or the laser interferometers used to monitor the stability of the basic angle, which were awarded to the Dutch TNO, or the micro-propulsion system used for the attitude control, produced by the Italian branch of Thales Alenia Space.
Astronomy & Astrophysics, 2016
Astronomy & Astrophysics, 2016
Undergraduate Lecture Notes in Physics, 2017
Time Transfer functions as a way to validate light propagation solutions for space astrometry
Experimental Astronomy, 2021
We propose to locate transponders and atomic clocks in at least three of the Lagrange points of t... more We propose to locate transponders and atomic clocks in at least three of the Lagrange points of the Sun-Earth pair, with the aim of exploiting the time of flight asymmetry between electromagnetic signals travelling in opposite directions along polygonal loops having the Lagrange points at their vertices. The asymmetry is due to the presence of a gravito-magnetic field partly caused by the angular momentum of the Sun, partly originating from the angular momentum of the galactic dark halo in which the Milky Way is embedded. We list also various opportunities which could be associated with the main objective of this Lagrange Dark Halo Detector (LaDaHaD).
Astronomy & Astrophysics, 2017
Undergraduate Lecture Notes in Physics, 2017
In Chap. 1 we have shown how the classical Newtonian dynamics and Newtonian gravity can be formul... more In Chap. 1 we have shown how the classical Newtonian dynamics and Newtonian gravity can be formulated as a field theory based on the variational principle of least action.
Undergraduate lecture notes in physics, 2017
Undergraduate lecture notes in physics, 2017
One of the powerful features of the variational approach is its generality. It is in fact based o... more One of the powerful features of the variational approach is its generality. It is in fact based on a simple principle, stating that physical laws share the common characteristics of minimizing the action of a system, and as we have seen this can be applied to mechanics (i.e., the dynamics of particles) as well as to the dynamics of fields.
Undergraduate lecture notes in physics, 2017
Undergraduate lecture notes in physics, 2017
We know that, contrary to electromagnetism, the Newtonian theory of gravity is compatible with Ne... more We know that, contrary to electromagnetism, the Newtonian theory of gravity is compatible with Newtonian dynamics, and because we have just realized that the latter has to be replaced by special relativity, it is easy to understand that the former has to be superseded by another theory of gravity which is compatible with the new dynamics.
The Thirteenth Marcel Grossmann Meeting, 2014
The Astronomical Journal, 2011
IAU General Assembly, Aug 1, 2015
Monthly Notices of the Royal Astronomical Society, 2013
Undergraduate Lecture Notes in Physics, 2017
We combine new BV photometry with the spectroscopic observations of the Gaia-ESO Survey to study ... more We combine new BV photometry with the spectroscopic observations of the Gaia-ESO Survey to study the open cluster NGC6 705. 1028 stars were observed with the HR15n grating of the GIRAFFE instrument at VLT/UT2. The radial velocities obtained for those stars were used to derive membership probabilities. (1 data file)
IAU General Assembly, Aug 1, 2015
Journal of Astronomical History and Heritage, Apr 1, 2018
In this paper we give an historical presentation of the role of women at the Astronomical Observa... more In this paper we give an historical presentation of the role of women at the Astronomical Observatory of Turin, showing their scientific work and interests, and how their role evolved with time. This exposition is put in its appropriate context with a short summary of the history of the Observatory. In the end we try to give a possible recount of the events that triggered the beginning of female participation in the research and the life of this institution and explain its peculiar character.
Understanding Gaia, 2019
The construction of the Gaia satellite was entrusted to EADS Astrium, now Airbus Defence and Spac... more The construction of the Gaia satellite was entrusted to EADS Astrium, now Airbus Defence and Space, and was begun in 2006 in Toulouse, France. While Astrium was the prime contractor, the development and construction of the spacecraft involved many smaller subcontractors dealing with several different parts, like the CCDs of the focal plane, which were provided by the UK’s e2v Technologies, or the laser interferometers used to monitor the stability of the basic angle, which were awarded to the Dutch TNO, or the micro-propulsion system used for the attitude control, produced by the Italian branch of Thales Alenia Space.
Astronomy & Astrophysics, 2016
Astronomy & Astrophysics, 2016
Undergraduate Lecture Notes in Physics, 2017
Time Transfer functions as a way to validate light propagation solutions for space astrometry
Experimental Astronomy, 2021
We propose to locate transponders and atomic clocks in at least three of the Lagrange points of t... more We propose to locate transponders and atomic clocks in at least three of the Lagrange points of the Sun-Earth pair, with the aim of exploiting the time of flight asymmetry between electromagnetic signals travelling in opposite directions along polygonal loops having the Lagrange points at their vertices. The asymmetry is due to the presence of a gravito-magnetic field partly caused by the angular momentum of the Sun, partly originating from the angular momentum of the galactic dark halo in which the Milky Way is embedded. We list also various opportunities which could be associated with the main objective of this Lagrange Dark Halo Detector (LaDaHaD).
Astronomy & Astrophysics, 2017
Undergraduate Lecture Notes in Physics, 2017
In Chap. 1 we have shown how the classical Newtonian dynamics and Newtonian gravity can be formul... more In Chap. 1 we have shown how the classical Newtonian dynamics and Newtonian gravity can be formulated as a field theory based on the variational principle of least action.
This book is the first to provide a comprehensive, readily understandable report on the European ... more This book is the first to provide a comprehensive, readily understandable report on the European Space Agency’s Gaia mission that will meet the needs of a general audience. It takes the reader on an exciting journey of discovery, explaining how such a scientific satellite is made, presenting the scientific results available from Gaia to date, and examining how the collected data will be used and their likely scientific consequences.
The Gaia mission will provide a complete and high-precision map of the positions, distances, and motions of the stars in our galaxy. It will revolutionize our knowledge on the origin and evolution of the Milky Way, on the effects of mysterious dark matter, and on the birth and evolution of stars and extrasolar planets. The Gaia satellite was launched in December 2013 and has a foreseen operational lifetime of five to six years, culminating in a final stellar catalogue in the early 2020s. This book will appeal to all who have an interest in the mission and the profound impact that it will have on astronomy.