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Herschel Observations of Edge-On Spirals \(HEROES\)
A&A 582, A18 (2015) Astronomy DOI: 10.1051/0004-6361/201526667 & c ESO 2015 Astrophysics HERschel Observations of Edge-on Spirals (HEROES) II. Tilted-ring modelling of the atomic gas disks?;??;??? F. Allaert1, G. Gentile1;2, M. Baes1, G. De Geyter1, T.M. Hughes1;3, F. Lewis4;5, S. Bianchi6, I. De Looze1;7, J. Fritz8, B. W. Holwerda9, J. Verstappen10, and S. Viaene1 1 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, 9000 Gent, Belgium e-mail: [email protected] 2 Department of Physics and Astrophysics, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium 3 Instituto de Física y Astronomía, Universidad de Valparaíso, Avda. Gran Bretaña 1111, 951 Valparaíso, Chile 4 Faulkes Telescope Project, Cardiff University, The Parade, Cardiff CF24 3AA, Cardiff, Wales, UK 5 Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK 6 Osservatorio Astrofisico di Arcetri – INAF, Largo E. Fermi 5, 50125 Firenze, Italy 7 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK 8 Centro de Radioastronomía y Astrofísica, CRyA, UNAM, Campus Morelia, A.P. 3-72, CP 58089, 58341 Michoacán, Mexico 9 University of Leiden, Sterrenwacht Leiden, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands 10 Kapteyn Astronomical Institute, University of Groningen, Postbus 800, 9700 AV Groningen, The Netherlands Received 3 June 2015 / Accepted 3 July 2015 ABSTRACT Context. Edge-on galaxies can offer important insight into galaxy evolution because they are the only systems where the distribution of the different components can be studied both radially and vertically. The HEROES project was designed to investigate the interplay between the gas, dust, stars, and dark matter (DM) in a sample of 7 massive edge-on spiral galaxies. -
Arxiv:1004.5321V1 [Astro-Ph.CO] 29 Apr 2010 I-Nrrdpoete Fthe of Properties Mid-Infrared .A Evr .Mel´Endez M
Mid-Infrared Properties of the Swift Burst Alert Telescope Active Galactic Nuclei Sample of the Local Universe. I. Emission-Line Diagnostics K. A. Weaver, M. Mel´endez1,2, R. F. Mushotzky3, S. Kraemer4, K. Engle5, E. Malumuth6, J. Tueller, C. Markwardt3 NASA Goddard Space Flight Center, Greenbelt, MD, 20771 C.T. Berghea7 and R. P. Dudik U.S. Naval Observatory, Washington, DC 20392 L. M. Winter8 Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80309-0440 and L. Armus Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125 arXiv:1004.5321v1 [astro-ph.CO] 29 Apr 2010 –2– Received ; accepted To be submitted to the Astrophysical Journal 1NASA Postdoctoral Program Fellow, Goddard Space Flight Center, Greenbelt, MD, 20771 2present address: Department of Physics and Astronomy, Johns Hopkins University, Bal- timore, MD, 21218 3University of Maryland, College Park, MD 20742 4Institute for Astrophysics and Computational Sciences, Department of Physics, The Catholic University of America,Washington, DC 20064 5Adnet 6SESDA 7Computational Physics, Inc., Sprinfield, VA 22151 8Hubble Fellow –3– ABSTRACT We compare mid-infrared emission-line properties, from high-resolution Spitzer spectra of a hard X-ray (14 – 195 keV) selected sample of nearby (z < 0.05) AGN detected by the Burst Alert Telescope (BAT) aboard Swift. The lu- minosity distribution for the mid-infrared emission-lines, [O IV] 25.89 µm, [Ne II] 12.81 µm, [Ne III] 15.56 µm and [Ne V] 14.32/24.32 µm, and hard X-ray contin- uum show no differences between Seyfert 1 and Seyfert 2 populations, however six newly discovered BAT AGNs are under-luminous in [O IV], most likely the result of dust extinction in the host galaxy. -
Cold Gas and Baryon-Induced Dark Matter Cores in Nearby Galaxies
Cold gas and baryon-induced dark matter cores in nearby galaxies Flor Allaert Supervisors: Prof. Dr. Maarten Baes, Dr. Gianfranco Gentile A dissertation submitted to Ghent University in partial fulfilment of the requirements for the degree of Doctor of Science: Astronomy September 2017 Supervisors: Prof. Dr. Maarten Baes Vakgroep Fysica en Sterrenkunde Universiteit Gent Dr. Gianfranco Gentile Vakgroep Fysica en Sterrenkunde Vrije Universiteit Brussel Jury members: Prof. Dr. Dirk Poelman (President) Vakgroep Vastestofwetenschappen Universiteit Gent Dr. Karel Van Acoleyen (Secretary) Vakgroep Fysica en Sterrenkunde Universiteit Gent Prof. Dr. Sven De Rijcke Vakgroep Fysica en Sterrenkunde Universiteit Gent Prof. Dr. Herwig Dejonghe Vakgroep Fysica en Sterrenkunde Universiteit Gent Prof. Dr. Uli Klein Argelander-Institut fur¨ Astronomie Universitat¨ Bonn Prof. Dr. Erwin de Blok Netherlands Institute for Radio Astronomy Contents 1 Introduction1 1.1 Galaxies - building blocks of the Universe.................1 1.1.1 Classification............................2 1.1.2 Chemical evolution.........................4 1.1.3 Accretion and mergers.......................6 1.2 Observing the different components....................8 1.2.1 Stars................................8 1.2.2 Gas.................................9 1.2.3 Dust................................. 12 1.3 Panchromatic SED modelling and dust radiative transfer......... 13 1.3.1 SED fitting............................. 13 1.3.2 Dust radiative transfer....................... 14 1.3.3 The energy balance problem.................... 15 1.4 FRIEDL, HEROES and NHEMESES................... 17 1.4.1 The energy balance problem revisited............... 18 1.5 Dark matter................................. 18 1.5.1 History............................... 19 1.5.2 Dark matter in cosmology..................... 21 1.5.3 Cosmological simulations..................... 23 1.5.4 The cusp-core controversy..................... 24 1.5.5 Baryons to the rescue?...................... -
Herschel Observations of Edge-On Spirals (HEROES). II: Tilted-Ring
Astronomy & Astrophysics manuscript no. HEROES˙II c ESO 2018 July 24, 2018 HERschel? Observations of Edge-on Spirals (HEROES) II. Tilted-ring modelling of the atomic gas disks F. Allaert1, G. Gentile1;2, M. Baes1, G. De Geyter1, T.M. Hughes1;3, F. Lewis4;5, S. Bianchi6, I. De Looze1;7, J. Fritz8, B. W. Holwerda9, J. Verstappen10, and S. Viaene1 1 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium e-mail: [email protected] 2 Department of Physics and Astrophysics, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium 3 Instituto de F´ısica y Astronom´ıa, Universidad de Valpara´ıso, Avda. Gran Bretana˜ 1111, Valpara´ıso, Chile 4 Faulkes Telescope Project, Cardiff University, The Parade, Cardiff CF24 3AA, Cardiff, Wales 5 Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK 6 Osservatorio Astrofisico di Arcetri INAF, Largo E. Fermi 5, 50125 Firenze, Italy 7 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK 8 Centro de Radioastronom´ıa y Astrof´ısica, CRyA, UNAM, Campus Morelia, A.P. 3-72, C.P. 58089, Michoacan,´ Mexico 9 University of Leiden, Sterrenwacht Leiden, Niels Bohrweg 2, NL-2333 CA Leiden, The Netherlands 10 Kapteyn Astronomical Institute, University of Groningen, Postbus 800, NL-9700 AV Groningen, the Netherlands ABSTRACT Context. Edge-on galaxies can offer important insights in galaxy evolution as they are the only systems where the dis- tribution of the different components can be studied both radially and vertically. The HEROES project was designed to investigate the interplay between the gas, dust, stars and dark matter (DM) in a sample of 7 massive edge-on spiral galaxies. -
Infrared and Hard X-Ray Diagnostics of AGN Identification from the Swift
Draft version October 20, 2018 A Preprint typeset using LTEX style emulateapj v. 08/22/09 INFRARED AND HARD X-RAY DIAGNOSTICS OF AGN IDENTIFICATION FROM THE SWIFT/BAT AND AKARI ALL-SKY SURVEYS K. Matsuta1, 2, P. Gandhi2, T. Dotani2, 1, T. Nakagawa2, N. Isobe2, Y. Ueda3, K. Ichikawa3, Y. Terashima4, S. Oyabu5, I. Yamamura2, 1, andL. Stawarz2, 6 1Department of Space and Astronautical Science, The Graduate University for Advanced Studies, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan 2Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan 3Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan 4Department of Physics, Ehime University, 2-5, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan 5Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan 6Astronomical Observatory, Jagiellonian University, ul. Orla 171, Krak´ow 30-244, Poland Draft version October 20, 2018 ABSTRACT We combine data from two all-sky surveys in order to study the connection between the infrared and hard X-ray (> 10 keV) properties for local active galactic nuclei (AGN). The Swift/Burst Alert Telescope all-sky survey provides an unbiased, flux-limited selection of hard X-ray detected AGN. Cross-correlating the 22-month hard X-ray survey with the AKARI all-sky survey, we studied 158 AGN detected by the AKARI instruments. We find a strong correlation for most AGN between the infrared (9, 18, and 90 µm) and hard X-ray (14–195 keV) luminosities, and quantify the correlation for various subsamples of AGN. -
Ngc Catalogue Ngc Catalogue
NGC CATALOGUE NGC CATALOGUE 1 NGC CATALOGUE Object # Common Name Type Constellation Magnitude RA Dec NGC 1 - Galaxy Pegasus 12.9 00:07:16 27:42:32 NGC 2 - Galaxy Pegasus 14.2 00:07:17 27:40:43 NGC 3 - Galaxy Pisces 13.3 00:07:17 08:18:05 NGC 4 - Galaxy Pisces 15.8 00:07:24 08:22:26 NGC 5 - Galaxy Andromeda 13.3 00:07:49 35:21:46 NGC 6 NGC 20 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 7 - Galaxy Sculptor 13.9 00:08:21 -29:54:59 NGC 8 - Double Star Pegasus - 00:08:45 23:50:19 NGC 9 - Galaxy Pegasus 13.5 00:08:54 23:49:04 NGC 10 - Galaxy Sculptor 12.5 00:08:34 -33:51:28 NGC 11 - Galaxy Andromeda 13.7 00:08:42 37:26:53 NGC 12 - Galaxy Pisces 13.1 00:08:45 04:36:44 NGC 13 - Galaxy Andromeda 13.2 00:08:48 33:25:59 NGC 14 - Galaxy Pegasus 12.1 00:08:46 15:48:57 NGC 15 - Galaxy Pegasus 13.8 00:09:02 21:37:30 NGC 16 - Galaxy Pegasus 12.0 00:09:04 27:43:48 NGC 17 NGC 34 Galaxy Cetus 14.4 00:11:07 -12:06:28 NGC 18 - Double Star Pegasus - 00:09:23 27:43:56 NGC 19 - Galaxy Andromeda 13.3 00:10:41 32:58:58 NGC 20 See NGC 6 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 21 NGC 29 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 22 - Galaxy Pegasus 13.6 00:09:48 27:49:58 NGC 23 - Galaxy Pegasus 12.0 00:09:53 25:55:26 NGC 24 - Galaxy Sculptor 11.6 00:09:56 -24:57:52 NGC 25 - Galaxy Phoenix 13.0 00:09:59 -57:01:13 NGC 26 - Galaxy Pegasus 12.9 00:10:26 25:49:56 NGC 27 - Galaxy Andromeda 13.5 00:10:33 28:59:49 NGC 28 - Galaxy Phoenix 13.8 00:10:25 -56:59:20 NGC 29 See NGC 21 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 30 - Double Star Pegasus - 00:10:51 21:58:39 -
X-Ray and Infrared Diagnostics of Nearby Active Galactic Nuclei
Publ. Astron. Soc. Japan (2014) 00(0), 1–14 1 doi: 10.1093/pasj/xxx000 X-ray and infrared diagnostics of nearby active galactic nuclei with MAXI and AKARI. Naoki ISOBE 1,2, Taiki KAWAMURO 3, Shinki OYABU 4, Takao NAKAGAWA 2, Shunsuke BABA 2,5, Kenichi YANO 2,5, Yoshihiro UEDA 3, & Yoshiki TOBA 6,7 1 School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan 2 Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan 3 Department of Astronomy, Kyoto University, Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan 4 Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan 5 Department of Physics, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 133-0033, Japan 6 Research Center for Space and Cosmic Evolution, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan 7 Academia Sinica Institute of Astronomy and Astrophysics, PO Box 23-141, Taipei 10617, Taiwan ∗E-mail: [email protected] Received 2016 June 20; Accepted 2016 August 23 Abstract Nearby active galactic nuclei were diagnosed in the X-ray and mid-to-far infrared wavelengths, with Monitor of All-sky X-ray Image (MAXI) and the Japanese infrared observatory AKARI, respectively. Among the X-ray sources listed in the second release of the MAXI all-sky X-ray source catalog, 100 ones are currently identified as a non-blazar-type active galactic nucleus. -
SRG/ART-XC All-Sky X-Ray Survey: Catalog of Sources Detected During the first Year M
Astronomy & Astrophysics manuscript no. art_allsky ©ESO 2021 July 14, 2021 SRG/ART-XC all-sky X-ray survey: catalog of sources detected during the first year M. Pavlinsky1, S. Sazonov1?, R. Burenin1, E. Filippova1, R. Krivonos1, V. Arefiev1, M. Buntov1, C.-T. Chen2, S. Ehlert3, I. Lapshov1, V. Levin1, A. Lutovinov1, A. Lyapin1, I. Mereminskiy1, S. Molkov1, B. D. Ramsey3, A. Semena1, N. Semena1, A. Shtykovsky1, R. Sunyaev1, A. Tkachenko1, D. A. Swartz2, and A. Vikhlinin1, 4 1 Space Research Institute, 84/32 Profsouznaya str., Moscow 117997, Russian Federation 2 Universities Space Research Association, Huntsville, AL 35805, USA 3 NASA/Marshall Space Flight Center, Huntsville, AL 35812 USA 4 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA July 14, 2021 ABSTRACT We present a first catalog of sources detected by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory in the 4–12 keV energy band during its on-going all-sky survey. The catalog comprises 867 sources detected on the combined map of the first two 6-month scans of the sky (Dec. 2019 – Dec. 2020) – ART-XC sky surveys 1 and 2, or ARTSS12. The achieved sensitivity to point sources varies between ∼ 5 × 10−12 erg s−1 cm−2 near the Ecliptic plane and better than 10−12 erg s−1 cm−2 (4–12 keV) near the Ecliptic poles, and the typical localization accuracy is ∼ 1500. Among the 750 sources of known or suspected origin in the catalog, 56% are extragalactic (mostly active galactic nuclei (AGN) and clusters of galaxies) and the rest are Galactic (mostly cataclysmic variables (CVs) and low- and high-mass X-ray binaries). -
Arxiv:1201.2944V1 [Astro-Ph.HE] 13 Jan 2012 Tde on H Poiersl Ihol Ml Excess Small a Kpc Only Recent with of Other Result at 100S 2009)
Draft version June 26, 2018 A Preprint typeset using LTEX style emulateapj v. 5/2/11 UNDERSTANDING DUAL AGN ACTIVATION IN THE NEARBY UNIVERSE Michael Koss1,2, Richard Mushotzky2, Ezequiel Treister3, Sylvain Veilleux2, Ranjan Vasudevan2, and Margaret Trippe2 Draft version June 26, 2018 ABSTRACT We study the fraction of dual AGN in a sample of 167 nearby (z<0.05), moderate luminosity, ultra hard X-ray selected AGN from the all-sky Swift BAT survey. Combining new Chandra and Gemini observations together with optical and X-ray observations, we find that the dual AGN frequency at scales <100 kpc is ∼10% (16/167). Of the 16 dual AGN, only 3 (19%) were detected using X-ray spectroscopy and were not detected using emission line diagnostics. Close dual AGN (<30 kpc) tend to be more common among the most X-ray luminous systems. In dual AGN, the X-ray luminosity of both AGN increases strongly with decreasing galaxy separation, suggesting that the merging event is key in powering both AGN. 50% of the AGN with a very close companion (<15 kpc), are dual AGN. We also find that dual AGN are more likely to occur in major mergers and tend to avoid absorption line galaxies with elliptical morphologies. Finally, we find SDSS Seyferts are much less likely than BAT AGN (0.25% vs. 7.8%) to be found in dual AGN at scales <30 kpc because of a smaller number of companions galaxies, fiber collision limits, a tendency for AGN at small separations to be detected only in X-rays, and a higher fraction of dual AGN companions with increasing AGN luminosity. -
20110022589.Pdf
Draft version July 6, 2011 A Preprint typeset using LTEX style emulateapj v. 11/10/09 HOST GALAXY PROPERTIES OF THE Swift BAT ULTRA HARD X-RAY SELECTED AGN Michael Koss1,2,3, Richard Mushotzky1, Sylvain Veilleux1, Lisa M. Winter4,5,Wayne Baumgartner2, Jack Tueller2, Neil Gehrels2, and Lynne Valencic2 Draft version July 6, 2011 ABSTRACT We have assembled the largest sample of ultra hard X-ray selected (14-195 keV) AGN with host galaxy optical data to date, with 185 nearby (z<0.05), moderate luminosity AGN from the Swift BAT sample. The BAT AGN host galaxies have intermediate optical colors (u − r and g − r) that are bluer than a comparison sample of inactive galaxies and optically selected AGN from the Sloan Digital Sky Survey (SDSS) which are chosen to have the same stellar mass. Based on morphological classifications from the RC3 and the Galaxy Zoo, the bluer colors of BAT AGN are mainly due to a higher fraction of mergers and massive spirals than in the comparison samples. BAT AGN in massive galaxies (log M∗>10.5) have a 5 to 10 times higher rate of spiral morphologies than in SDSS AGN or inactive galaxies. We also see enhanced far-IR emission in BAT AGN suggestive of higher levels of star formation compared to the comparison samples. BAT AGN are preferentially found in the most massive host galaxies with high concentration indexes indicative of large bulge-to-disk ratios and large supermassive black holes. The narrow-line (NL) BAT AGN have similar intrinsic luminosities as the SDSS NL Seyferts based on measurements of [O III] λ5007. -
An Hα Survey Aiming at the Detection of Extraplanar Diffuse Ionized Gas in Halos of Edge-On Spiral Galaxies
A&A 406, 493–503 (2003) Astronomy DOI: 10.1051/0004-6361:20030615 & c ESO 2003 Astrophysics An Hα survey aiming at the detection of extraplanar diffuse ionized gas in halos of edge-on spiral galaxies I. How common are gaseous halos among non-starburst galaxies? J. Rossa1,2, and R.-J. Dettmar1 1 Astronomisches Institut, Ruhr-Universit¨at Bochum, 44780 Bochum, Germany e-mail: [email protected] 2 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA (Present address) Received 28 January 2003 / Accepted 15 April 2003 Abstract. In a series of two papers we present results of a new Hα imaging survey, aiming at the detection of extraplanar diffuse ionized gas in halos of late-type spiral galaxies. We have investigated a sample of 74 nearby edge-on spirals, covering the northern and southern hemisphere. In 30 galaxies we detected extraplanar diffuse emission at mean distances of |z|∼ 1−2 kpc. Individual filaments can be traced out to |z|≤6 kpc in a few cases. We find a good correlation between the FIR / / 2 / flux ratio (S 60 S 100) and the SFR per unit area (LFIR D25), based on the detections non-detections. This is actually valid for starburst, normal and for quiescent galaxies. A minimal SFR per unit area for the lowest S 60/S 100 values, at which extended ˙thres = . ± . × 40 −1 −2 emission has been detected, was derived, which amounts to EA25 (3 2 0 5) 10 erg s kpc . There are galaxies where / 2 extraplanar emission was detected at smaller values of LFIR D25, however, only in combination with a significantly enhanced dust temperature. -
Three Years Swift–BAT Survey of AGN: Reconciling Theory and Observations?∗
SLAC-PUB-14355 Three years Swift–BAT Survey of AGN: reconciling theory and observations?∗ D. Burlon1, [email protected] M. Ajello2, [email protected] J. Greiner1, A. Comastri3, A. Merloni1,4, and N. Gehrels5 ABSTRACT It is well accepted that unabsorbed as well as absorbed AGN are needed to explain the nature and the shape of the Cosmic X-ray background, even if the fraction of highly absorbed objects (dubbed Compton-thick sources) substan- tially still escapes detection. We derive and analyze the absorption distribution using a complete sample of AGN detected by Swift–BAT in the first three years of the survey. The fraction of Compton-thick AGN represents only 4.6% of the total AGN population detected by Swift–BAT. However, we show that once cor- rected for the bias against the detection of very absorbed sources the real intrinsic +9 fraction of Compton-thick AGN is 20−6 %. We proved for the first time (also in the BAT band) that the anti-correlation of the fraction of absorbed AGN and luminosity it tightly connected to the different behavior of the luminosity func- tions (XLFs) of absorbed and unabsorbed AGN. This points towards a difference between the two subsamples of objects with absorbed AGN being, on average, 1Max-Planck-Institut f¨ur Extraterrestrische Physik, Giessenbachstraße 1, 85740 Garching, Germany 2SLAC National Laboratory and Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, CA 94025, USA 3INAF Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy 4Excellence Cluster Universe, TUM, Boltzmannstraße 2, 85748, Garching, Germany 5Astrophysics Science Division, Mail Code 661, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA *Based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA.