J/A+A/637/A12ivo://CDS.VizieR/J/A+A/637/A12doi:10.26093/cds/vizier.36370012CDSKavanagh P.J.Sasaki M.Breitschwerdt D.de Avillez M.A.Filipovic M.D.,Galvin T.Haberl F.Hatzidimitriou D.Henze M.Plucinsky P.P.,Saeedi S.Sokolovsky K.V.Williams B.F.2020-09-16T13:13:36Z2020-05-05T08:12:43ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesx-ray-sourcesinterstellar-mediumWe use new deep XMM-Newton observations of the northern disk of M31 to trace the hot interstellar medium (ISM) in unprecedented detail and to characterise the physical properties of the X-ray emitting plasmas. We used all XMM-Newton data up to and including our new observations to produce the most detailed image yet of the hot ISM plasma in a grand design spiral galaxy such as our own. We compared the X-ray morphology to multi-wavelength studies in the literature to set it in the context of the multi-phase ISM. We performed spectral analyses on the extended emission using our new observations as they offer sufficient depth and count statistics to constrain the plasma properties. Data from the Panchromatic Hubble Andromeda Treasury were used to estimate the energy injected by massive stars and their supernovae. We compared these results to the hot gas properties. The brightest emission regions were found to be correlated with populations of massive stars, notably in the 10kpc star-forming ring. The plasma temperatures in the ring regions are ~0.2keV up to ~0.6keV. We suggest this emission is hot ISM heated in massive stellar clusters and superbubbles. We derived X-ray luminosities, densities, and pressures for the gas in each region. We also found large extended emission filling low density gaps in the dust morphology of the northern disk, notably between the 5kpc and 10kpc star-forming rings. We propose that the hot gas was heated and expelled into the gaps by the populations of massive stars in the rings. It is clear that the massive stellar populations are responsible for heating the ISM to X-ray emitting temperatures, filling their surroundings, and possibly driving the hot gas into the low density regions. Overall, the morphology and spectra of the hot gas in the northern disk of M 31 is similar to other galaxy disks.2020A&A...637A..12Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/637/A12CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/480/599 : XMM-Newton survey of M31 centre field (Stiele+, 2008)J/A+A/495/733 : XMM-Newton spectral survey of M31 disc (Shaw+, 2009)J/A+A/534/A55 : Deep XMM-Newton Survey of M31 (Stiele+, 2011)J/A+A/555/A65 : X-ray variability of M31 central field (Hofmann+, 2013)J/A+A/620/A28 : XMM northern disc of M31 sources (Sasaki+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/637/A12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/637/A12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/637/A12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/637/A12https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/637/A12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/637/A12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/637/A12/list (List of fits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/637/A12/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/637/A12/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/637/A12/list?GETtext/xml+votable180.050000true10.689441.26130.0055555555555555566/2709https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/637/A12?format=asciiX-raydefaultJ/A+A/637/A12/listList of fits imagesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar