IAU100: 1919-2019: 100 Years
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Model Optimization for Deep Space Exploration Via Simulators and Deep Learning
Model Optimization for Deep Space Exploration via Simulators and Deep Learning James Bird1,∗, Kellan Colburn2,∗, Linda Petzold1, Philip Lubin2 Abstract Machine learning, and eventually true artificial intelligence techniques, are extremely im- portant advancements in astrophysics and astronomy. We explore the application of deep learning using neural networks in order to automate the detection of astronomical bodies for future exploration missions, such as missions to search for signatures or suitability of life. The ability to acquire images, analyze them, and send back those that are important, as determined by the deep learning algorithm, is critical in bandwidth-limited applications. Our previous foundational work solidified the concept of using simulator images and deep learning in order to detect planets. Optimization of this process is of vital importance, as even a small loss in accuracy might be the difference between capturing and completely missing a possibly-habitable nearby planet. Through computer vision, deep learning, and simulators we introduce methods that optimize the detection of exoplanets. We show that maximum achieved accuracy can hit above 98% for multiple model architectures, even with a relatively small training set. Keywords: computer vision, simulator, deep learning, space, universe, exoplanet, object detection, novelty detection, neural network, machine learning, transfer learning, interstellar travel, planet detection 1. Introduction This paper will address some of the challenges and possibilities of exoplanet -
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The CoRoT Legacy Book c The authors, 2016 DOI: 10.1051/978-2-7598-1876-1.c031 III.1 Transit features detected by the CoRoT/Exoplanet Science Team M. Deleuil1, C. Moutou1, J. Cabrera2, S. Aigrain3, F. Bouchy1, H. Deeg4, P. Bord´e5, and the CoRoT Exoplanet team 1 Aix Marseille Universite,´ CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388, Marseille, France 2 Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany 3 Department of Physics, Denys Wilkinson Building Keble Road, Oxford, OX1 3RH 4 Instituto de Astrofisica de Canarias, 38205 La Laguna, Tenerife, Spain and Universidad de La Laguna, Dept. de Astrof´ısica, 38206 La Laguna, Tenerife, Spain 5 Institut d’astrophysique spatiale, Universite´ Paris-Sud 11 & CNRS (UMR 8617), Bat.ˆ 121, 91405 Orsay, France While this is reliable on a statistical point of view, individ- 1. Introduction ual targets could be misclassified (Damiani et al. this book) CoRoT has observed 26 stellar fields located in two oppo- and these numbers are mostly indicative of the overall stel- site directions for transiting planet hunting. The fields ob- lar population properties. They show however that, in a served near 6h 50m in right ascension are referred as (galac- given field, classes V and IV represent the majority of the tic) \anti-center fields”, and those near 18h 50m as \center targets. Figure III.1.2 displays how these stars classified fields”. The observing strategy consisted in staring a given as class IV and V distribute over spectral types F, G, K, star field for durations that ranged from 21 to 152 days. -
Vol. 47, No. 2 June 2018 a New Star Appears in Europe Page 14 Journal
Online PDF: ISSN 233333-9063 Vol. 47, No. 2 June 2018 Journal of the International Planetarium Society A New Star Appears in Europe Page 14 Reach for the stars... and beyond. ZEISS powerdome IV // INSPIRATION MADE BY ZEISS True Hybrid with brilliant stars and perfect renderings from a single source ZEISS powerdome IV brings many new features to your star theater: an integrated planetarium for earthbound and extraterrestrial astronomy with seamless transitions between optical and digital star fields (True Hybrid) | The universe from Earth via the solar system and Milky Way galaxy to the very edge of the observable space | Stereo projection | 8k performance | 10 bit color depth for smooth gradients | HEVC codec for efficient video renderings free of artifacts | All constellation figures, individually and in groups without any mutual overlapping | Telescope function for deep-sky imagery applying Astronomy Visualization Metadata | Complete image set of all Messier objects | Customizable polar lights, comets with gas and dust tails, and shooting stars with a great variety of parameters for location, brightness, colors and appearance | Simulation of day and night with dusk and dawn coloring of sky and panorama images | Customizable weather effects such as clouds, rain, fog, snow, rainbow, halos, air and light pollution effects | Digital rights management to secure your productions | Remote service for quick help, and much more from the only company serving planetariums for nearly a century. www.zeiss.com/planetariums zeiss-ad_pdIV_letter_x3.indd -
The False Positive Probability of Corot and Kepler Planetary Candidates
EPSC Abstracts Vol. 6, EPSC-DPS2011-1243, 2011 EPSC-DPS Joint Meeting 2011 c Author(s) 2011 The False Positive probability of CoRoT and Kepler planetary candidates. R.F. Díaz (1,2), J.M. Almenara (3), A. Bonomo (3), F. Bouchy (1,2), M. Deleuil (3), G. Hébrard (1,2), C. Moutou (3) and A. Santerne (3) (1) Institut d’astrophysique de Paris, FRANCE, (2) Observatoire de Haute-Provence, FRANCE, (3) Laboratoire d’Astrophysique de Marseille, FRANCE ([email protected]) Abstract tified, similarly to what is done for planet candidates detected from RV surveys, a fraction of which are in We estimate the False Positive Probability of CoRoT actuality low-mass objects in low-inclination orbits. and Kepler planetary candidates, and review critically Therefore, since the rapidly-growing number of previous results present in the literature. The ob- transiting planet candidates makes it increasingly dif- tained estimates are compared with the results from ficult to confirm each one individually by means of RV the ground-based radial velocity follow-up carried out measurements, a precise and reliable estimation of the with the HARPS and SOPHIE spectrographs for these FPP is of great importance to obtain the greatest sci- two space missions. entific return from the data acquired by CoRoT and Kepler, as well as to fully exploit the data that will be 1. Introduction obtained from future missions, like PLATO. The CoRoT and Kepler space missions are dedicated to finding transit-like events caused by extrasolar plan- 2. The False Positives ets in orbits aligned with the line of sight from Earth. -
The Trilogy Is Complete -- Gigagalaxy Zoom Phase 3 28 September 2009
The trilogy is complete -- GigaGalaxy Zoom Phase 3 28 September 2009 "globules" and the most prominent ones have been catalogued by the astronomer Edward Emerson Barnard. The Lagoon Nebula hosts the young open stellar cluster known as NGC 6530. This is home for 50 to 100 stars and twinkles in the lower left portion of the nebula. Observations suggest that the cluster is slightly in front of the nebula itself, though still enshrouded by dust, as revealed by reddening of the starlight, an effect that occurs when small dust particles scatter light. The third image of ESO's GigaGalaxy Zoom project is an amazing vista of the Lagoon Nebula taken with the 67-million-pixel Wide Field Imager attached to the MPG/ESO 2.2-meter telescope at the La Silla Observatory in Chile. The image covers more than one and a half square degree -- an area eight times larger than that of the Full Moon -- with a total of about 370 million pixels. It is based on images acquired using three different broadband filters (B, V, R) and one narrow- band filter (H-alpha). Credit: ESO The newly released image extends across a field of view of more than one and a half square degree — an area eight times larger than that of the full Moon — and was obtained with the Wide Field Imager attached to the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile. This 67-million-pixel camera has already created several of ESO's iconic pictures. The intriguing object depicted here — the Lagoon Nebula — is located four to five thousand light- years away towards the constellation of Sagittarius The three images of ESO’s GigaGalaxy Zoom project (the Archer). -
HATS-3B: an Inflated Hot Jupiter Transiting an F-Type Star
Draft version January 5, 2018 A Preprint typeset using LTEX style emulateapj v. 5/2/11 HATS-3b: AN INFLATED HOT JUPITER TRANSITING AN F-TYPE STAR D. Bayliss1, G. Zhou1, K. Penev2,3, G. A.´ Bakos2,3,⋆,⋆⋆, J. D. Hartman2,3, A. Jordan´ 4, L. Mancini5, M. Mohler5, V. Suc4, M. Rabus4, B. Beky´ 3, Z. Csubry2,3, L. Buchhave6, T. Henning5, N. Nikolov5, B. Csak´ 5, R. Brahm4, N. Espinoza4, R. W. Noyes3, B. Schmidt1, P. Conroy1, D. J. Wright,7,8, C. G. Tinney,7,8, B. C. Addison,7,8, P. D. Sackett,1, D. D. Sasselov3, J. Laz´ ar´ 9, I. Papp9, P. Sari´ 9 Draft version January 5, 2018 ABSTRACT We report the discovery by the HATSouth survey of HATS-3b, a transiting extrasolar planet orbiting a V=12.4 F dwarf star. HATS-3b has a period of P =3.5479d, mass of Mp =1.07 MJ, and radius of Rp =1.38 RJ. Given the radius of the planet, the brightness of the host star, and the stellar rotational 1 velocity (v sin i = 9.0kms− ), this system will make an interesting target for future observations to measure the Rossiter-McLaughlin effect and determine its spin-orbit alignment. We detail the low/medium-resolution reconnaissance spectroscopy that we are now using to deal with large numbers of transiting planet candidates produced by the HATSouth survey. We show that this important step in discovering planets produces log g and Teff parameters at a precision suitable for efficient candidate vetting, as well as efficiently identifying stellar mass eclipsing binaries with radial velocity 1 semi-amplitudes as low as 1 km s− . -
Search for Wide Substellar Companions to Young Nearby Stars with the VISTA Hemisphere Survey
Highlights on Spanish Astrophysics X, Proceedings of the XIII Scientific Meeting of the Spanish Astronomical Society held on July 16 – 20, 2018, in Salamanca, Spain. B. Montesinos, A. Asensio Ramos, F. Buitrago, R. Schödel, E. Villaver, S. Pérez-Hoyos, I. Ordóñez-Etxeberria (eds.), 2019 Search for wide substellar companions to young nearby stars with the VISTA Hemisphere Survey. P. Chinchilla1;2, V.J.S. B´ejar1;2, N. Lodieu1;2, M.R. Zapatero Osorio3, B. Gauza4, R. Rebolo1;2;5, and A. P´erezGarrido6 1 Instituto de Astrof´ısicade Canarias (IAC), c/V´ıaL´acteaS/N, 38200 La Laguna, Tenerife, Spain 2 Dpto. de Astrof´ısica,Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain 3 Centro de Astrobiolog´ıa(CSIC-INTA), Ctra. de Ajalvir km 4, 28850 Torrej´onde Ardoz, Madrid, Spain 4 Dpto. de Astronom´ıa,Universidad de Chile, Camino el Observatorio 1515, Casilla 36-D, Las Condes, Santiago, Chile 5 Consejo Superior de Investigaciones Cient´ıficas(CSIC), Spain 6 Dpto. de F´ısicaAplicada, Universidad Polit´ecnicade Cartagena, 30202 Cartagena, Murcia, Spain Abstract We have performed a search for substellar objects as common proper motion companions to young nearby stars (including members of the Young Moving Groups AB Doradus, TW Hydrae, Tucana-Horologium and Beta Pictoris, and the Upper Scorpius young association) up to separations of 50,000 AU, using the VISTA Hemisphere Survey and 2MASS astro- metric and photometric data. We have found tens of candidates with spectral types from M to L, and estimated masses from low-mass stars to the deuterium-burning limit mass. -
Letter of Interest La Silla Schmidt Southern Survey
Snowmass2021 - Letter of Interest La Silla Schmidt Southern Survey Thematic Areas: (check all that apply /) (CF1) Dark Matter: Particle Like (CF2) Dark Matter: Wavelike (CF3) Dark Matter: Cosmic Probes (CF4) Dark Energy and Cosmic Acceleration: The Modern Universe (CF5) Dark Energy and Cosmic Acceleration: Cosmic Dawn and Before (CF6) Dark Energy and Cosmic Acceleration: Complementarity of Probes and New Facilities (CF7) Cosmic Probes of Fundamental Physics (Other) [Please specify frontier/topical group] Contact Information: Peter Nugent (LBNL) [[email protected]]: Collaboration: LS4 Authors: Greg Aldering (LBNL) [email protected]; Thomas Diehl (FNAL) [email protected]; Alex Kim (LBNL) [email protected]; Antonella Palmese (FNAL) [email protected]; Saul Perlmutter (LBNL) [email protected]; David Schlegel (LBNL) [email protected]; Yuanyuan Zhang (FNAL) [email protected] Abstract: We are proposing a 5-year public, wide-field, optical survey using an upgraded 20 square degree QUEST Camera on the ESO Schmidt Telescope at the La Silla Observatory in Chile – The La Silla Schmidt Southern Survey (LS4). We will use LBNL fully-depleted CCDs to maximize the sensitivity in the optical up to 1 micron. This survey will complement the Legacy Survey of Space and Time (LSST) being conducted at the Vera C. Rubin Observatory in two ways. First, it will provide a higher cadence than the LSST over several thousand square degrees of sky each night, allowing a more accurate characterization of brighter and faster evolving transients to 21st magnitude. Second, it will open up a new phase-space for discovery when coupled with the LSST by probing the sky between 12–16th magnitude – a region where the Rubin Observatory saturates. -
Transiting Exoplanets from the Corot Space Mission-XIX. Corot-23B: A
Astronomy & Astrophysics manuscript no. corot-23b˙v5 c ESO 2018 November 8, 2018 Transiting exoplanets from the CoRoT space mission ⋆ XIX. CoRoT-23b: a dense hot Jupiter on an eccentric orbit Rouan, D.1, Parviainen, H.2,20, Moutou, C.4, Deleuil, M.4, Fridlund, M.5, A. Ofir6, Havel, M.7, Aigrain, S.8, Alonso, R.15, Auvergne, M.1, Baglin, A.1, Barge, P.4, Bonomo, A.4, Bord´e, P.9, Bouchy, F.10,11, Cabrera, J.3, Cavarroc, C.9, Csizmadia, Sz.3, Deeg, H.J.2,20, Diaz, R.F.4, Dvorak, R.12, Erikson, A.3, Ferraz-Mello, S.13, Gandolfi, D.5, Gillon, M.15, Guillot, T.7, Hatzes, A.14, H´ebrard, G.10,11, Jorda, L.4, L´eger, A.9, Llebaria, A.4, Lammer, H.19, Lovis, C.15, Mazeh, T.6, Ollivier, M.9, P¨atzold, M.17, Queloz, D.15, Rauer, H.3, Samuel, B.1, Santerne, A.4, Schneider, J.16, Tingley, B.2,20, and Wuchterl, G.14 (Affiliations can be found after the references) v5 - Received August 23, 2011; accepted October 4, 2011 ABSTRACT We report the detection of CoRoT-23b, a hot Jupiter transiting in front of its host star with a period of 3.6314 ± 0.0001 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite, combined with spectroscopic radial velocity (RV) measurements. A photometric search for possible background eclipsing binaries conducted at CFHT and OGS concluded with a very low risk of false positives. The usual techniques of combining RV and transit data simultaneously were used to derive stellar and planetary parameters. -
The VVV Templates Project Towards an Automated Classification of VVV
A&A 567, A100 (2014) Astronomy DOI: 10.1051/0004-6361/201423904 & c ESO 2014 Astrophysics The VVV Templates Project Towards an automated classification of VVV light-curves I. Building a database of stellar variability in the near-infrared R. Angeloni1,2,3, R. Contreras Ramos1,4, M. Catelan1,2,4,I.Dékány4,1,F.Gran1,4, J. Alonso-García1,4,M.Hempel1,4, C. Navarrete1,4,H.Andrews1,6, A. Aparicio7,21,J.C.Beamín1,4,8,C.Berger5, J. Borissova9,4, C. Contreras Peña10, A. Cunial11,12, R. de Grijs13,14, N. Espinoza1,15,4, S. Eyheramendy15,4, C. E. Ferreira Lopes16, M. Fiaschi12, G. Hajdu1,4,J.Han17,K.G.Hełminiak18,19,A.Hempel20,S.L.Hidalgo7,21,Y.Ita22, Y.-B. Jeon23, A. Jordán1,2,4, J. Kwon24,J.T.Lee17, E. L. Martín25,N.Masetti26, N. Matsunaga27,A.P.Milone28,D.Minniti4,20,L.Morelli11,12, F. Murgas7,21, T. Nagayama29,C.Navarro9,4,P.Ochner12,P.Pérez30, K. Pichara5,4, A. Rojas-Arriagada31, J. Roquette32,R.K.Saito33, A. Siviero12, J. Sohn17, H.-I. Sung23,M.Tamura27,24,R.Tata7,L.Tomasella12, B. Townsend1,4, and P. Whitelock34,35 (Affiliations can be found after the references) Received 29 March 2014 / Accepted 13 May 2014 ABSTRACT Context. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey is a variability survey of the Milky Way bulge and an adjacent section of the disk carried out from 2010 on ESO Visible and Infrared Survey Telescope for Astronomy (VISTA). The VVV survey will eventually deliver a deep near-IR atlas with photometry and positions in five passbands (ZYJHKS) and a catalogue of 1−10 million variable point sources – mostly unknown – that require classifications. -
The Case for Irish Membership of the European Southern Observatory Prepared by the Institute of Physics in Ireland June 2014
The Case for Irish Membership of the European Southern Observatory Prepared by the Institute of Physics in Ireland June 2014 The Case for Irish Membership of the European Southern Observatory Contents Summary 2 European Southern Observatory Overview 3 European Extremely Large Telescope 5 Summary of ESO Telescopes and Instrumentation 6 Technology Development at ESO 7 Big Data and Energy-Efficient Computing 8 Return to Industry 9 Ireland and Space Technologies 10 Astrophysics and Ireland 13 Undergraduate Teaching 15 Outreach and Astronomy 17 Education and Training 19 ESO Membership Fee 20 Conclusions 22 References 24 1 Summary The European Southern Observatory (ESO) is universally acknowledged as being the world leading facility for observational astronomy. The astrophysics community in Ireland is united in calling for Irish membership of ESO believing that this action would strongly support the Irish government’s commitment to its STEM (science, technology, engineering and maths) agenda. An essential element of the government’s plans for the Irish economy is to substantially grow its high-tech business sector. Physics is a core part of that base, with 86,000 jobs in Ireland in this sector1 while astrophysics, in particular, is a key driver both of science interest and especially of innovation. To support this agenda, Irish scientists and engineers need access to the best research facilities and with this access comes the benefits of spin-off technology, contracts and the jobs which this can bring. ESO is currently expanding its membership to include Brazil and is considering some eastern European countries. The cost of membership will increase as more states join and as Ireland’s GDP increases. -
Candidate Paolo GALLO
POLITECNICO DI TORINO Master’s Degree in Computer Engineering Master’s Degree Thesis Development of a real-time solution for an interactive VR representation of large star catalogues Supervisors Candidate Prof. Andrea SANNA Paolo GALLO April, 2021 Abstract This thesis takes place in the context of Virtual Reality and Data Visualization techniques applied to large astronomical datasets. The goal of this work is to improve and extend the already existing Astra Data Navigator application, built with the Unity game engine, and make it capable of loading and displaying large star catalogues in a realistic and real-time 3D environment. The software was built in theVR laboratory of ALTEC - Aerospace Logistics Technology Engineering Company - while interfacing with other European projects such as NEANIAS and ESA’s Gaia mission, which is particularly relevant to this work. The catalogue of celestial objects observed by the Gaia astrometric satellite is the largest collection of stars available to date, counting over 1.8 billion entries; being able to navigate and interact with this data in 3D would be extremely useful for both scientific and educational purposes, but mostVR tools are limited to a much smaller object count and cannot be extended further. On the data management side, the application (which has an integrated star catalogue but also supports external data sources in the form of CSV files or SQL databases) offers the choice between two different modes: the user can choose to load all of the available data at startup and store it in the system memory, which requires more resources and increased loading time but then provides a seamless navigation of the 3D environment, or he can opt for a dynamic loading solution (better suited for large catalogues), that only selects relevant data based on the current observer position, saving a lot of resources but introducing additional loading times that interrupt the navigation experience.