Chandra Observations of NuSTAR Serendipitous Sources near the Galactic Plane
| العنوان: | Chandra Observations of NuSTAR Serendipitous Sources near the Galactic Plane |
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| المؤلفون: | AnaSofija Cuturilo, L. Klindt, Daniel Stern, Farid Rahoui, Francesca M. Fornasini, John A. Tomsick, Jaesub Hong, David M. Alexander, George B. Lansbury, James Aird, Maïca Clavel |
| المساهمون: | Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Tomsick, JA [0000-0001-5506-9855], Lansbury, GB [0000-0002-5328-9827], Rahoui, F [0000-0001-7655-4120], Aird, J [0000-0003-1908-8463], Alexander, DM [0000-0002-5896-6313], Clavel, M [0000-0003-0724-2742], Fornasini, FM [0000-0002-9286-9963], Stern, D [0000-0003-2686-9241], Apollo - University of Cambridge Repository, Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA) |
| المصدر: | Astrophys.J. Astrophys.J., 2018, 869 (2), pp.171. ⟨10.3847/1538-4357/aaf007⟩ The astrophysical journal, 2018, Vol.869(2), pp.171 [Peer Reviewed Journal] |
| بيانات النشر: | HAL CCSD, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cataclysmic variable star, X-rays: stars, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Magnetar, 01 natural sciences, law.invention, Telescope, stars: neutron, surveys, Observatory, law, 0103 physical sciences, Emission spectrum, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, white dwarfs, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, White dwarf, Astronomy and Astrophysics, Galactic plane, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], stars: black holes |
| الوصف: | The NuSTAR serendipitous survey has already uncovered a large number of Active Galactic Nuclei (AGN), providing new information about the composition of the Cosmic X-ray Background. For the AGN off the Galactic plane, it has been possible to use the existing X-ray archival data to improve source localizations, identify optical counterparts, and classify the AGN with optical spectroscopy. However, near the Galactic Plane, better X-ray positions are necessary to achieve optical or near-IR identifications due to the higher levels of source crowding. Thus, we have used observations with the Chandra X-ray Observatory to obtain the best possible X-ray positions. With eight observations, we have obtained coverage for 19 NuSTAR serendips within 12 deg of the plane. One or two Chandra sources are detected within the error circle of 15 of the serendips, and we report on these sources and search for optical counterparts. For one source (NuSTAR J202421+3350.9), we obtained a new optical spectrum and detected the presence of hydrogen emission lines. The source is Galactic, and we argue that it is likely a Cataclysmic Variable. For the other sources, the Chandra positions will enable future classifications in order to place limits on faint Galactic populations, including high-mass X-ray binaries and magnetars. Comment: 16 pages, accepted by ApJ |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.3847/1538-4357/aaf007⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4291babe6af7efa8d21dd5360d77dd3 https://hal.archives-ouvertes.fr/hal-01944988 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e4291babe6af7efa8d21dd5360d77dd3 |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.3847/1538-4357/aaf007⟩ |
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