A dataset provided by the European Space Agency

Name: Massive Stars in the Orion Region
Published: 2025-03-25T09:54:37Z

Proposal ID	1220006
Obs ID	12200060004, 12200060005
Title	Massive Stars in the Orion Region
Download Data Associated to the proposal	https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:1220006
DOI	https://doi.org/10.57780/esa-e549la9
Author	Diehl
Abstract	Massive stars and their impacts on their surrounding interstellar medium comprise the feedback scenario which is one of the main astrophysical issues in the context of galaxy and cosmic chemical evolution. Radioactivity from 26Al adds a unique diagnostic tool for studying this scenario in nearby massive-star regions. The Orion region hosts one of the closest such regions at ~400 pc. COMPTELs measurement of 1809 keV emission from this region had shown an interesting offset of the 26Al emission from its likely sources, and emission appears rather extended. This suggests champagne-like outflow into the Eridanus cavity, as has recently also been seen with XMM-Newton. If true, this opens unique possibilities to study the ISM as it is shaped by massive stars and the interaction of massive stars with their surrounding ISM in a new way: Due to their proximity and location on the near side of molecular clouds and at the edge of a large cavity, we can compare the locations of massive stars to the morphology of the ISM and the emission pattern of 26Al radioactivity, in order to constrain 26Al ejection from massive stars in mass and velocity. Previous observations led to ~3 Ms of exposure, resulting in a tantalizing hint of the expected signal. With our proposed deepening of exposure (3 Ms in AO-10) we aim to measure the intensity (from AO-10/11; 2.3 Ms only done up to now) and kinematics (later, from more AO-12 observations) of this nearby 26Al source with INTEGRAL. We aim at unique data for ISM dynamics and massive stars as its driving engines within INTEGRALs lifetime there is hardly a more suitable and closer target region. These observations also support search for annihilation radiation, and for the intensity of nuclear deexcitation gamma-rays in the MeV range, both valuable diagnostics of the structure of superbubble interiors; moreover, over 30 Fermi sources can be studied within our target region.
Publications	3C 120 Disk/Corona vs. Jet Variability in X-rays - Fedorova, Elena, Del Popolo, Antonio (2023-04-01) http://ui.adsabs.harvard.edu/#abs/2023Univ....9..212F A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies - Lubinski, P., Beckmann, V.,Gibaud, L.,Paltani, S.,Papadakis, I. E.,Ricci, C.,Soldi, S.,Turler, M.,Walter, R.,Zdziarski, A. A. (2016-05-01) http://ui.adsabs.harvard.edu/#abs/2016MNRAS.458.2454L An infrared study of Galactic OH/IR stars - III. Variability properties of the Arecibo sample - Jimenez-Esteban, F. M., Engels, D.,Aguado, D. S.,Gonzalez, J. B.,Garcia-Lario, P. (2021-08-01) http://ui.adsabs.harvard.edu/#abs/2021MNRAS.505.6051J Extreme relativistic electron fluxes in the Earths outer radiation belt: Analysis of INTEGRAL IREM data - Meredith, Nigel P., Horne, Richard B.,Sandberg, Ingmar,Papadimitriou, Constantinos,Evans, Hugh D. R. (2017-07-01) http://ui.adsabs.harvard.edu/#abs/2017SpWea..15..917M INTEGRAL/SPI {$gamma$}-ray line spectroscopy. Response and background characteristics - Diehl, Roland, Siegert, Thomas,Greiner, Jochen,Krause, Martin,Kretschmer, Karsten,Lang, Michael,Pleintinger, Moritz,Strong, Andrew W.,Weinberger, Christoph,Zhang, Xiaoling (2018-03-01) http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..12D New hard X-ray sources discovered in the ongoing INTEGRAL Galactic plane survey after 14 yr of observations - Krivonos, Roman A., Tsygankov, Sergey S.,Mereminskiy, Ilya A.,Lutovinov, Alexander A.,Sazonov, Sergey Yu.,Sunyaev, Rashid A. (2017-09-01) http://ui.adsabs.harvard.edu/#abs/2017MNRAS.470..512K Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry - Osborn, H. P., Rodriguez, J. E.,Kenworthy, M. A.,Kennedy, G. M.,Mamajek, E. E.,Robinson, C. E.,Espaillat, C. C.,Armstrong, D. J.,Shappee, B. J.,Bieryla, A.,Latham, D. W.,Anderson, D. R.,Beatty, T. G.,Berlind, P.,Calkins, M. L.,Esquerdo, G. A.,Gaudi, B. S.,Hellier, C.,Holoien, T. W. -S.,James, D.,Kochanek, C. S.,Kuhn, R. B.,Lund, M. B.,Pepper, J.,Pollacco, D. L.,Prieto, J. L.,Siverd, R. J.,Stassun, K. G.,Stevens, D. J.,Stanek, K. Z.,West, R. G. (2017-10-01) http://ui.adsabs.harvard.edu/#abs/2017MNRAS.471..740O Sub-GeV dark matter annihilation: limits from Milky Way observations with INTEGRAL - Siegert, Thomas, Calore, Francesca,Serpico, Pasquale Dario (2024-02-01) http://ui.adsabs.harvard.edu/#abs/2024MNRAS.528.3433S ²⁶Al gamma rays from the Galaxy with INTEGRAL/SPI - Pleintinger, Moritz M. M., Diehl, Roland,Siegert, Thomas,Greiner, Jochen,Krause, Martin G. H. (2023-04-01) http://ui.adsabs.harvard.edu/#abs/2023A&A...672A..53P The Galactic Bulge Diffuse Emission in Broadband X-Rays with NuSTAR - Perez, Kerstin, Krivonos, Roman,Wik, Daniel R. (2019-10-01) http://ui.adsabs.harvard.edu/#abs/2019ApJ...884..153P The INTEGRAL/IBIS AGN catalogue: an update - Malizia, A., Landi, R.,Molina, M.,Bassani, L.,Bazzano, A.,Bird, A. J.,Ubertini, P. (2016-07-01) http://ui.adsabs.harvard.edu/#abs/2016MNRAS.460...19M Water megamaser emission in hard X-ray selected AGN - Panessa, F., Castangia, P.,Malizia, A.,Bassani, L.,Tarchi, A.,Bazzano, A.,Ubertini, P. (2020-09-01) http://ui.adsabs.harvard.edu/#abs/2020A&A...641A.162P X-ray absorption in INTEGRAL active galactic nuclei. Host galaxy inclination - Malizia, A., Bassani, L.,Stephen, J. B.,Bazzano, A.,Ubertini, P. (2020-07-01) http://ui.adsabs.harvard.edu/#abs/2020A&A...639A...5M
Temporal Coverage	2015-08-18T14:24:21Z / 2016-04-07T12:21:16Z
Version	1.0
Mission Description	The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
Creator Contact	https://www.cosmos.esa.int/web/integral/helpdesk
Date Published	2025-03-25T09:54:37Z
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Diehl, 2025, 'Massive Stars in the Orion Region', 1.0, European Space Agency, https://doi.org/10.57780/esa-e549la9