A dataset provided by the European Space Agency

Name: Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models
Published: 2008-01-04T00:00:00Z

Proposal ID	040502
Title	Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405020601 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405020801
DOI	https://doi.org/10.5270/esa-1j3imjr
Principal Investigator, PI	Dr Stefano Bianchi
Abstract	We propose to observe with XMM-Newton a sample of bona-fide. Seyfert 2 galaxieswith no X-ray absorption. The selected sources are a conservative subsampletaken from the Panessa & Bassani (2002) sample, including only Seyfert 2s whereno column density in excess of the Galactic one has ever been observed in theX-rays, within sensitive limits. The primary goal of this proposal is to findobjects unabsorbed in the X-rays and without broad optical lines, which wouldrepresent a serious challenge to simple AGN Unification Models. The key to findgenuine unabsorbed Seyfert 2s., excluding variability issues, is to performsimultaneous X-ray and optical spectroscopy. We therefore intend to coordinateground-based optical observations with the XMM-Newton observations.
Publications	XMM-Newton observations of Seyfert galaxies from the Palomar spectroscopic survey: the X-ray absorption distribution \|Akylas, A., Georgantopoulos, I., \| A&A \| 500-999 \| 2009 \| 2009A&A...500..999A \| http://ui.adsabs.harvard.edu/#abs/2009A&A...500..999A The Suzaku X-ray spectrum of NGC 3147. Further insights on the best true Seyfert 2 galaxy candidate \|Matt, G., Bianchi, S., et al. \| A&A \| 540-111 \| 2012 \| 2012A&A...540A.111M \| http://ui.adsabs.harvard.edu/#abs/2012A&A...540A.111M X-ray colour-colour selection for heavily absorbed active galactic nuclei \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 422-1166 \| 2012 \| 2012MNRAS.422.1166B \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.422.1166B The XMM Cluster Survey: optical analysis methodology and the first data release \|Mehrtens, Nicola, Romer, A. Kathy, et al. \| MNRAS \| 423-1024 \| 2012 \| 2012MNRAS.423.1024M \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.1024M On the nature of unabsorbed Seyfert 2 galaxies \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 390-1241 \| 2008 \| 2008MNRAS.390.1241B \| http://ui.adsabs.harvard.edu/#abs/2008MNRAS.390.1241B Comparison between the luminosity functions of X-ray and OIII selected AGN \|Georgantopoulos, I., Akylas, A., \| A&A \| 509-38 \| 2010 \| 2010A&A...509A..38G \| http://ui.adsabs.harvard.edu/#abs/2010A&A...509A..38G Probing variability patterns of the Fe K line complex in bright nearby AGNs \|de Marco, B., Iwasawa, K., et al. \| A&A \| 507-159 \| 2009 \| 2009A&A...507..159D \| http://ui.adsabs.harvard.edu/#abs/2009A&A...507..159D An XMM-Newton spectral survey of 12 mum selected galaxies - I. X-ray data \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 413-1206 \| 2011 \| 2011MNRAS.413.1206B \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.413.1206B Fe Kalpha line profile in AGNs: average shape and redshift dependence \|Mao, Wei-Ming, Hu, Chen, et al. \| RAA \| 10-905 \| 2010 \| 2010RAA....10..905M \| http://ui.adsabs.harvard.edu/#abs/2010RAA....10..905M NGC 3147: a true. type 2 Seyfert galaxy without the broad-line region \|Bianchi, S., Corral, A., et al. \| MNRAS \| 385-195 \| 2008 \| 2008MNRAS.385..195B \| http://ui.adsabs.harvard.edu/#abs/2008MNRAS.385..195B An XMM-Newton spectral survey of 12 mum selected galaxies - II. Implications for AGN selection and unification \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 414-3084 \| 2011 \| 2011MNRAS.414.3084B \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.414.3084B The XMM Cluster Survey: X-ray analysis methodology \|Lloyd-Davies, E. J., Romer, A. Kathy, et al. \| MNRAS \| 418-14 \| 2011 \| 2011MNRAS.418...14L \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.418...14L CAIXA: a catalogue of AGN in the XMM-Newton archive. III. Excess variance analysis \|Ponti, G., Papadakis, I., et al. \| A&A \| 542-83 \| 2012 \| 2012A&A...542A..83P \| http://ui.adsabs.harvard.edu/#abs/2012A&A...542A..83P An XMM-Newton Survey of the Soft X-Ray Background. II. An All-Sky Catalog of Diffuse O VII and O VIII Emission Intensities \|Henley, David B., Shelton, Robin L., \| ApJS \| 202-14 \| 2012 \| 2012ApJS..202...14H \| http://ui.adsabs.harvard.edu/#abs/2012ApJS..202...14H Simultaneous X-ray and optical observations of true type 2 Seyfert galaxies \|Bianchi, Stefano, Panessa, Francesca, et al. \| MNRAS \| 426-3225 \| 2012 \| 2012MNRAS.426.3225B \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426.3225B Comparison of Millimeter-wave and X-Ray Emission in Seyfert Galaxies \|Monje, R. R., Blain, A. W., \| ApJS \| 195-23 \| 2011 \| 2011ApJS..195...23M \| http://ui.adsabs.harvard.edu/#abs/2011ApJS..195...23M Are X-Ray Emitting Coronae around Supermassive Black Holes Outflowing? \|Liu, Teng, Wang, Jun-Xian, et al. \| ApJ \| 783-106 \| 2014 \| 2014ApJ...783..106L \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...783..106L Synapses of active galactic nuclei:. Comparing X-ray and optical classifications using artificial neural networks \|Gonzalez-Martin, O., Diaz-Gonzalez, D., et al. \| A&A \| 567-92 \| 2014 \| 2014A&A...567A..92G \| http://ui.adsabs.harvard.edu/#abs/2014A&A...567A..92G Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift \|Yershov, V. N., \| Ap&SS \| 354-97 \| 2014 \| 2014Ap&SS.354...97Y \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y Sunyaev-Zel.dovich effect or not? Detecting the main foreground effect of most galaxy clusters \|Xiao, Weike, Chen, Chen, et al. \| MNRAS \| 432-41 \| 2013 \| 2013MNRAS.432L..41X \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.432L..41X X-ray reverberation around accreting black holes \|Uttley, P., Cackett, E. M., et al. \| A&ARv \| 22-72 \| 2014 \| 2014A&ARv..22...72U \| http://ui.adsabs.harvard.edu/#abs/2014A&ARv..22...72U The Interaction of the Fermi Bubbles with the Milky Way.s Hot Gas Halo \|Miller, Matthew J., Bregman, Joel N., \| ApJ \| 829-9 \| 2016 \| 2016ApJ...829....9M \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...829....9M The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch, Eric W., \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F The NuSTAR view of the true type 2 Seyfert NGC 3147 \|Bianchi, Stefano, Marinucci, Andrea, et al. \| MNRAS \| 468-2740 \| 2017 \| 2017MNRAS.468.2740B \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.468.2740B Anisotropy of the galaxy cluster X-ray luminosity-temperature relation \|Migkas, Konstantinos, Reiprich, Thomas H., \| A&A \| 611-50 \| 2018 \| 2018A&A...611A..50M \| http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..50M The Near-infrared CO Absorption Band as a Probe to the Innermost Part of an AGN-obscuring Material \|Baba, Shunsuke, Nakagawa, Takao, et al. \| ApJ \| 852-83 \| 2018 \| 2018ApJ...852...83B \| http://ui.adsabs.harvard.edu/#abs/2018ApJ...852...83B The XMM Cluster Survey: Present status and latest results \|Viana, P. T. P., Mehrtens, N., et al. \| AN \| 334-462 \| 2013 \| 2013AN....334..462V \| http://ui.adsabs.harvard.edu/#abs/2013AN....334..462V A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies \|Earnshaw, H. P., Roberts, T. P., et al. \| MNRAS \| 483-5554 \| 2019 \| 2019MNRAS.483.5554E \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.483.5554E Broad-band X-ray analysis of local mid-infrared-selected Compton-thick AGN candidates \|La Caria, M.-M., Vignali, C., et al. \| MNRAS \| 487-1662 \| 2019 \| 2019MNRAS.487.1662L \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.487.1662L Testing emergent gravity on galaxy cluster scales \|Tamosiunas, Andrius, Bacon, David, et al. \| JCAP \| 5-53 \| 2019 \| 2019JCAP...05..053T \| http://ui.adsabs.harvard.edu/#abs/2019JCAP...05..053T Chandra Follow-up of the SDSS DR8 Redmapper Catalog Using the MATCha Pipeline \|Hollowood, Devon L., Jeltema, Tesla, et al. \| ApJS \| 244-22 \| 2019 \| 2019ApJS..244...22H \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..244...22H Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters \|Palmese, A., Annis, J., et al. \| MNRAS \| 493-4591 \| 2020 \| 2020MNRAS.493.4591P \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.493.4591P An X-Ray- and SZ-bright Diffuse Source toward M31: A Local Hot Bridge \|Qu, Zhijie, Huang, Rui, et al. \| ApJ \| 907-14 \| 2021 \| 2021ApJ...907...14Q \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...907...14Q A nearby galaxy perspective on dust evolution. Scaling relations and constraints on the dust build-up in galaxies with the DustPedia and DGS samples \|Galliano, Fr\\u00e9d\\u00e9ric, Nersesian, Angelos, et al. \| A&A \| 649-18 \| 2021 \| 2021A&A...649A..18G \| http://ui.adsabs.harvard.edu/#abs/2021A&A...649A..18G Classification of 4XMM-DR9 sources by machine learning \|Zhang, Yanxia, Zhao, Yongheng, \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z The impact of precession on the observed population of ULXs \|Khan, Norman, Middleton, Matthew J., et al. \| MNRAS \| 509-2493 \| 2022 \| 2022MNRAS.509.2493K \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.509.2493K The Solar Cycle Temporal Variation of the Solar Wind Charge Exchange X-Ray Lines \|Qu, Zhijie, Koutroumpa, Dimitra, et al. \| ApJ \| 930-21 \| 2022 \| 2022ApJ...930...21Q \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930...21Q AGN impact on the molecular gas in galactic centres as probed by CO lines \|Esposito, Federico, Vallini, Livia, et al. \| MNRAS \| 512-686 \| 2022 \| 2022MNRAS.512..686E \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.512..686E The Redshift Evolution of Ultraluminous X-Ray Sources out to z 0.5: Comparison with X-Ray Binary Populations and Contribution to the Cosmic X-Ray Background \|Scott Barrows, R., Comerford, Julia M., et al. \| ApJ \| 932-27 \| 2022 \| 2022ApJ...932...27S \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...932...27S Constraining the X-ray reflection in low accretion-rate active galactic nuclei using XMM-Newton, NuSTAR, and Swift \|Diaz, Y., Hern\\u00e0ndez-Garc\\u00eda, L., et al. \| A&A \| 669-114 \| 2023 \| 2023A&A...669A.114D \| http://ui.adsabs.harvard.edu/#abs/2023A&A...669A.114D Coronal properties of low-accreting AGNs using Swift, XMM-Newton, and NuSTAR observations \|Jana, Arghajit, Chatterjee, Arka, et al. \| MNRAS \| 524-4670 \| 2023 \| 2023MNRAS.524.4670J \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.524.4670J The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions \|Pan, Zeyang, Qu, Zhijie, et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez, Antonio C., \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Robust constraints on feebly interacting particles using XMM-Newton \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque, Pedro, Balaji, Shyam, \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2006-10-06T14:47:22Z/2006-11-23T08:28:28Z
Version	17.56_20190403_1200
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2008-01-04T00:00:00Z
Keywords	"optical spectroscopy", "objects unabsorbed", "unified models", "coordinate ground", "XMM", "seyfert 2s", "bassani 2002 sample", "conservative subsample", "unabsorbed type", "sensitive limits", "xray absorption", "seyfert galaxy", "XMM-Newton", "column density", "bona fide", "broad optical lines", "xmm newton"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Stefano Bianchi, 2008, 'Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1j3imjr