ORCID Profile
0000-0001-8059-2840
Current Organisation
Observatoire astronomique de Strasbourg
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Publisher: EDP Sciences
Date: 03-05-2011
Publisher: American Astronomical Society
Date: 19-01-2017
Publisher: American Astronomical Society
Date: 02-11-2010
Publisher: EDP Sciences
Date: 08-2014
Publisher: Oxford University Press (OUP)
Date: 05-01-2018
Publisher: Oxford University Press (OUP)
Date: 24-01-2015
Publisher: EDP Sciences
Date: 11-2013
Publisher: American Astronomical Society
Date: 06-01-2014
Publisher: Oxford University Press (OUP)
Date: 17-03-2017
DOI: 10.1093/MNRAS/STX606
Publisher: EDP Sciences
Date: 11-2014
Publisher: American Astronomical Society
Date: 26-01-2011
Publisher: Oxford University Press (OUP)
Date: 02-2010
Publisher: EDP Sciences
Date: 25-11-2014
Publisher: American Astronomical Society
Date: 04-05-2017
Publisher: American Astronomical Society
Date: 12-09-2006
DOI: 10.1086/506564
Publisher: Oxford University Press (OUP)
Date: 02-03-2011
Publisher: American Astronomical Society
Date: 17-10-2013
Publisher: Oxford University Press (OUP)
Date: 21-10-2011
Publisher: EDP Sciences
Date: 02-2014
Publisher: EDP Sciences
Date: 28-04-2017
Publisher: American Astronomical Society
Date: 13-06-2008
Publisher: Oxford University Press (OUP)
Date: 06-02-2016
DOI: 10.1093/MNRAS/STW083
Publisher: Oxford University Press (OUP)
Date: 09-08-2012
Publisher: Oxford University Press (OUP)
Date: 08-2007
Publisher: Oxford University Press (OUP)
Date: 24-10-2014
Publisher: Oxford University Press (OUP)
Date: 02-2008
Publisher: American Astronomical Society
Date: 26-09-2014
Publisher: EDP Sciences
Date: 11-2010
Publisher: EDP Sciences
Date: 03-2014
Publisher: American Astronomical Society
Date: 14-05-2018
Publisher: Oxford University Press (OUP)
Date: 12-02-2014
Publisher: American Astronomical Society
Date: 11-05-2011
Publisher: Oxford University Press (OUP)
Date: 24-04-2018
Publisher: EDP Sciences
Date: 23-04-2013
Publisher: Oxford University Press (OUP)
Date: 08-02-2011
Publisher: Oxford University Press (OUP)
Date: 11-06-2009
Publisher: Oxford University Press (OUP)
Date: 29-08-2012
Publisher: American Astronomical Society
Date: 18-05-2012
Publisher: American Astronomical Society
Date: 02-06-2015
Publisher: Springer Science and Business Media LLC
Date: 09-2009
DOI: 10.1038/NATURE08327
Abstract: In hierarchical cosmological models, galaxies grow in mass through the continual accretion of smaller ones. The tidal disruption of these systems is expected to result in loosely bound stars surrounding the galaxy, at distances that reach 10-100 times the radius of the central disk. The number, luminosity and morphology of the relics of this process provide significant clues to galaxy formation history, but obtaining a comprehensive survey of these components is difficult because of their intrinsic faintness and vast extent. Here we report a panoramic survey of the Andromeda galaxy (M31). We detect stars and coherent structures that are almost certainly remnants of dwarf galaxies destroyed by the tidal field of M31. An improved census of their surviving counterparts implies that three-quarters of M31's satellites brighter than M(v) = -6 await discovery. The brightest companion, Triangulum (M33), is surrounded by a stellar structure that provides persuasive evidence for a recent encounter with M31. This panorama of galaxy structure directly confirms the basic tenets of the hierarchical galaxy formation model and reveals the shared history of M31 and M33 in the unceasing build-up of galaxies.
Publisher: American Astronomical Society
Date: 11-11-2011
Publisher: American Astronomical Society
Date: 29-11-2011
Publisher: Oxford University Press (OUP)
Date: 25-05-2010
Publisher: American Astronomical Society
Date: 08-06-2010
Publisher: Oxford University Press (OUP)
Date: 2011
Publisher: EDP Sciences
Date: 11-2016
Publisher: American Astronomical Society
Date: 03-09-2014
Publisher: American Astronomical Society
Date: 07-09-2010
Publisher: Oxford University Press (OUP)
Date: 03-10-2013
Publisher: Oxford University Press (OUP)
Date: 12-2008
Publisher: American Astronomical Society
Date: 07-11-2013
Publisher: EDP Sciences
Date: 08-2011
Publisher: Oxford University Press (OUP)
Date: 04-06-2015
DOI: 10.1093/MNRAS/STV800
Publisher: American Astronomical Society
Date: 21-07-2011
Publisher: Oxford University Press (OUP)
Date: 09-07-0100
Publisher: American Association for the Advancement of Science (AAAS)
Date: 15-08-2014
Abstract: An unknown interloper systematically picks off light from galactic sources, snatching at specific wavelengths ranging from the ultraviolet to the infrared. The cause of what astronomers term diffuse interstellar bands (DIBs) still evades identification. Kos et al. combined nearly 500,000 stellar spectra from the RAVE survey to make a telling map that may clue us in further. This pseudo–three-dimensional map shows the distribution of the carrier that absorbs light at 862 nm, and it closely follows a separate map of interstellar dust, but with a significantly larger scale height in the Galactic plane. Though this is only one DIB of many, this analysis sets a path for the future study of others. Science , this issue p. 791
Publisher: Oxford University Press (OUP)
Date: 03-01-2015
Publisher: Oxford University Press (OUP)
Date: 07-07-2016
Publisher: EDP Sciences
Date: 22-06-2009
Publisher: EDP Sciences
Date: 02-2010
Publisher: EDP Sciences
Date: 2018
DOI: 10.1051/EPJCONF/201818612009
Abstract: Astronomical objects may be classified into types in many ways, and the evolution of such categorisations changes with new discoveries and progress in astrophysical understanding. The SIMBAD database contains information on astronomical objects that have been studied in the published literature, including a field that specifies astronomical object types. As a record that is derived entirely from the literature, a given astronomical object in SIMBAD may have multiple object types, and the list of object types must be maintained and updated. The SIMBAD object type list currently contains some 200 types, that are organised into a hierarchy based on astrophysical concepts. The hierarchical structure also includes relations between object types, and this facilitates searches of SIMBAD to obtain lists of all of the astronomical objects in a given category independently of the publisher or the year of publication. We will explain the organisation of astronomical object types in SIMBAD and how they may be used in queries of the SIMBAD database, and visualised on all-sky maps.
Publisher: EDP Sciences
Date: 17-01-2008
Publisher: American Astronomical Society
Date: 06-05-2011
Publisher: Oxford University Press (OUP)
Date: 12-2009
Publisher: American Astronomical Society
Date: 23-02-2010
Publisher: EDP Sciences
Date: 17-07-2008
No related grants have been discovered for Siebert Arnaud.