Hubble's Ongoing Monitoring of Solar System Planets & Minor Bodies

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Hubble's Ongoing Monitoring of Solar System Planets & Minor Bodies

HubbleHubble 30th Anniversary Science within our Solar System Heidi B. Hammel Planetary Astronomer Vice President for Science, AURA Association of Universities for Research in Astronomy Email: [email protected] twitter: hbhammel Why use HUBBLE to look at Solar System objects?!? Source: Pop Chart https://popchart.co/products/the-chart-of-cosmic-exploration NASA / JPL / Roscosmos / JAXA / ESA / ISRO / Jason Davis / The Planetary Society Hubble provides global context for in situ missions Hubble complements orbiting space missions NASA artist’s concept of Cassini spacecraft about to dive between Saturn and its rings Cassini spacecraft - orbited Saturn for nearly 18 years Saturn’s aurorae imaged by Hubble in the ultraviolet Hubble complements orbiting space missions Illustration of Juno at Jupiter (courtesy NASA) Juno spacecraft - currently Jupiter’s aurorae imaged by Hubble in the ultraviolet in orbit around Jupiter Hubble enhances space missions Pluto Charon Styx Nix Kerboros Hydra Illustration of Pluto's moon dances (courtesy NASA) New Horizons spacecraft - studied Pluto Composite of Hubble images showing Pluto moons and its moons discovered by Hubble Hubble enables space missions Arrokoth (2014 MU69) from New Horizons (courtesy NASA) Hubble found a new target in 2014, New Horizons spacecraft – went on to YEARS after New Horizons was launched! encounter object discovered by Hubble Hubble spectroscopy yields rich results Comet Garradd, Sirene Observatory Credit & Copyright: Olivier Sedan Europa spectroscopy with Hubble's Space Telescope Imaging C/2009 P1 (Garradd) Spectrograph (STIS) with Hubble Hubble spectra yield insights into chemistry of Far-ultraviolet spectroscopy of recent comets with Cosmic Europa's plumes Origins Spectrograph on Hubble Space Telescope Hubble enables a WEALTH of Solar System science Interstellar Comet 2I/Borisov Hubble Space Telescope Europa Plumes and Ganymede Aurorae Hubble Space Telescope Comet Shoemaker-levy 9 Impacts on Jupiter Hubble Space Telescope Hubble 30th Anniversary - Solar System Science Provide mission context Complement, enhance, enable Prepare for new missions Examine multiple objects Conduct multi-decadal studies Superb Solar System explorer Hubble Hubble 30th Anniversary - Solar System Science Hubble Hubble 30th Anniversary - Solar System Science Heidi B. Hammel [email protected] hbhammel.

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Abundance Study of the Two Solar-Analogue Corot Targets HD 42618 and HD 43587 from HARPS Spectroscopy,
A&A 552, A42 (2013) Astronomy DOI: 10.1051/0004-6361/201220883 & c ESO 2013 Astrophysics Abundance study of the two solar-analogue CoRoT targets HD 42618 and HD 43587 from HARPS spectroscopy, T. Morel1,M.Rainer2, E. Poretti2,C.Barban3, and P. Boumier4 1 Institut d’Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août, Bât. B5c, 4000 Liège, Belgium e-mail: [email protected] 2 INAF – Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), Italy 3 LESIA, CNRS, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex, France 4 Institut d’Astrophysique Spatiale, UMR 8617, Université Paris XI, Bâtiment 121, 91405 Orsay Cedex, France Received 11 December 2012 / Accepted 11 February 2013 ABSTRACT We present a detailed abundance study based on spectroscopic data obtained with HARPS of two solar-analogue main targets for the asteroseismology programme of the CoRoT satellite: HD 42618 and HD 43587. The atmospheric parameters and chemical com- position are accurately determined through a fully differential analysis with respect to the Sun observed with the same instrumental set-up. Several sources of systematic errors largely cancel out with this approach, which allows us to narrow down the 1-σ error bars to typically 20 K in effective temperature, 0.04 dex in surface gravity, and less than 0.05 dex in the elemental abundances. Although HD 42618 fulfils many requirements for being classified as a solar twin, its slight deficiency in metals and its possibly younger age indicate that, strictly speaking, it does not belong to this class of objects.
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International Ultraviolet Explorer Satellite Observations of Seven High-Excitation Planetary Nebulae (Gaseous Nebulae/Chemical Compositions/Excitation) L
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