Dissecting galaxies: spatial and spectral separation of emission excited by star formation and AGN activity

被引：67

作者：

Davies, Rebecca L. ^{[1
]}

Groves, Brent ^{[1
]}

Kewley, Lisa J. ^{[1
]}

Dopita, Michael A. ^{[1
]}

Hampton, Elise J. ^{[1
]}

Shastri, Prajval ^{[2
]}

Scharwachter, Julia ^{[3
]}

Sutherland, Ralph ^{[1
]}

Kharb, Preeti ^{[2
]}

Bhatt, Harish ^{[2
]}

Jin, Chichuan ^{[4
]}

Banfield, Julie ^{[1
,5
]}

Zaw, Ingyin ^{[6
]}

James, Bethan ^{[7
]}

Juneau, Stephanie ^{[8
]}

Srivastava, Shweta ^{[9
]}

机构：

[1] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia

[2] Indian Inst Astrophys, Sarjapur Rd, Bengaluru 560034, India

[3] UPMC, Sorbonne Univ, CNRS, LERMA,Observ Paris,PSL, F-75014 Paris, France

[4] Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany

[5] ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia

[6] New York Univ Abu Dhabi, 70 Washington Sq S, New York, NY 10012 USA

[7] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[8] CEA Saclay, DSM IRFU SAp, F-91191 Gif Sur Yvette, France

[9] Phys Res Lab, Astron & Astrophys Div, Ahmadabad 380009, Gujarat, India

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 462卷 / 02期

基金：

欧洲研究理事会; 澳大利亚研究理事会;

关键词：

galaxies: evolution; galaxies: ISM; galaxies: Seyfert; FIELD SPECTROGRAPH WIFES; NARROW-LINE REGIONS; H-II REGIONS; GALACTIC NUCLEI; HOST GALAXIES; SEYFERT-2; GALAXIES; STELLAR POPULATION; RADIATION PRESSURE; INFRARED GALAXIES; MINKOWSKIS OBJECT;

D O I：

10.1093/mnras/stw1754

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The optical spectra of Seyfert galaxies are often dominated by emission lines excited by both star formation and active galactic nucleus (AGN) activity. Standard calibrations (such as for the star formation rate) are not applicable to such composite (mixed) spectra. In this paper, we describe how integral field data can be used to spectrally and spatially separate emission associated with star formation from emission associated with accretion on to an AGN. We demonstrate our method using integral field data for two AGN host galaxies (NGC 5728 and NGC 7679) from the Siding Spring Southern Seyfert Spectroscopic Snapshot Survey (S7). The spectra of NGC 5728 and NGC 7679 form clear sequences of AGN fraction on standard emission line ratio diagnostic diagrams. We show that the emission line luminosities of the majority (>85 per cent) of spectra along each AGN fraction sequence can be reproduced by linear superpositions of the emission line luminosities of one AGN dominated spectrum and one star formation dominated spectrum. We separate the H alpha, H beta, [NII] lambda 6583, [S II]lambda lambda 6716, 6731, [O III]lambda 5007 and [O II]lambda lambda 3726, 3729 luminosities of every spaxel into contributions from star formation and AGN activity. The decomposed emission line images are used to derive the star formation rates and AGN bolometric luminosities for NGC 5728 and NGC 7679. Our calculated values are mostly consistent with independent estimates from data at other wavelengths. The recovered star-forming and AGN components also have distinct spatial distributions which trace structures seen in high-resolution imaging of the galaxies, providing independent confirmation that our decomposition has been successful.

引用

页码：1616 / 1629

页数：14

共 80 条

[1] Classification and analysis of emission-line galaxies using mean field independent component analysis [J].

Allen, James T. ;

Hewett, Paul C. ;

Richardson, Chris T. ;

Ferland, Gary J. ;

Baldwin, Jack A. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 430 (04) :3510-3536

[2] LOCAL LUMINOUS INFRARED GALAXIES. II. ACTIVE GALACTIC NUCLEUS ACTIVITY FROM SPITZER/INFRARED SPECTROGRAPH SPECTRA [J].

Alonso-Herrero, Almudena ;

Pereira-Santaella, Miguel ;

Rieke, George H. ;

Rigopoulou, Dimitra .

ASTROPHYSICAL JOURNAL, 2012, 744 (01)

[3] Common-Resolution Convolution Kernels for Space- and Ground-Based Telescopes [J].

Aniano, G. ;

Draine, B. T. ;

Gordon, K. D. ;

Sandstrom, K. .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2011, 123 (908) :1218-1236

[4] GOALS: The Great Observatories All-Sky LIRG Survey [J].

Armus, L. ;

Mazzarella, J. M. ;

Evans, A. S. ;

Surace, J. A. ;

Sanders, D. B. ;

Iwasawa, K. ;

Frayer, D. T. ;

Howell, J. H. ;

Chan, B. ;

Petric, A. ;

Vavilkin, T. ;

Kim, D. C. ;

Haan, S. ;

Inami, H. ;

Murphy, E. J. ;

Appleton, P. N. ;

Barnes, J. E. ;

Bothun, G. ;

Bridge, C. R. ;

Charmandaris, V. ;

Jensen, J. B. ;

Kewley, L. J. ;

Lord, S. ;

Madore, B. F. ;

Marshall, J. A. ;

Melbourne, J. E. ;

Rich, J. ;

Satyapal, S. ;

Schulz, B. ;

Spoon, H. W. W. ;

Sturm, E. ;

Veilleux, S. ;

Xu, K. .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2009, 121 (880) :559-576

[5] ATLAS OF PECULIAR GALAXIES [J].

ARP, H .

ASTROPHYSICAL JOURNAL, 1966, S 14 :1-&

[6] Quantifying the bimodal color-magnitude distribution of galaxies [J].

Baldry, IK ;

Glazebrook, K ;

Brinkmann, J ;

Ivezic, Z ;

Lupton, RH ;

Nichol, RC ;

Szalay, AS .

ASTROPHYSICAL JOURNAL, 2004, 600 (02) :681-694

[7] CLASSIFICATION PARAMETERS FOR THE EMISSION-LINE SPECTRA OF EXTRA-GALACTIC OBJECTS [J].

BALDWIN, JA ;

PHILLIPS, MM .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1981, 93 (551) :5-19

[8] P-MaNGA Galaxies: emission-lines properties - gas ionization and chemical abundances from prototype observations [J].

Belfiore, F. ;

Maiolino, R. ;

Bundy, K. ;

Thomas, D. ;

Maraston, C. ;

Wilkinson, D. ;

Sanchez, S. F. ;

Bershady, M. ;

Blanc, G. A. ;

Bothwell, M. ;

Cales, S. L. ;

Coccato, L. ;

Drory, N. ;

Emsellem, E. ;

Fu, H. ;

Gelfand, J. ;

Law, D. ;

Masters, K. ;

Parejko, J. ;

Tremonti, C. ;

Wake, D. ;

Weijmans, A. ;

Yan, R. ;

Xiao, T. ;

Zhang, K. ;

Zheng, T. ;

Bizyaev, D. ;

Kinemuchi, K. ;

Oravetz, D. ;

Simmons, A. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 449 (01) :867-900

[9] The SAMI Galaxy Survey: instrument specification and target selection [J].

Bryant, J. J. ;

Owers, M. S. ;

Robotham, A. S. G. ;

Croom, S. M. ;

Driver, S. P. ;

Drinkwater, M. J. ;

Lorente, N. P. F. ;

Cortese, L. ;

Scott, N. ;

Colless, M. ;

Schaefer, A. ;

Taylor, E. N. ;

Konstantopoulos, I. S. ;

Allen, J. T. ;

Baldry, I. ;

Barnes, L. ;

Bauer, A. E. ;

Bland-Hawthorn, J. ;

Bloom, J. V. ;

Brooks, A. M. ;

Brough, S. ;

Cecil, G. ;

Couch, W. ;

Croton, D. ;

Davies, R. ;

Ellis, S. ;

Fogarty, L. M. R. ;

Foster, C. ;

Glazebrook, K. ;

Goodwin, M. ;

Green, A. ;

Gunawardhana, M. L. ;

Hampton, E. ;

Ho, I-T ;

Hopkins, A. M. ;

Kewley, L. ;

Lawrence, J. S. ;

Leon-Saval, S. G. ;

Leslie, S. ;

McElroy, R. ;

Lewis, G. ;

Liske, J. ;

Lopez-Sanchez, A. R. ;

Mahajan, S. ;

Medling, A. M. ;

Metcalfe, N. ;

Meyer, M. ;

Mould, J. ;

Obreschkow, D. ;

O'Toole, S. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 447 (03) :2857-2879

[10] OVERVIEW OF THE SDSS-IV MaNGA SURVEY: MAPPING NEARBY GALAXIES AT APACHE POINT OBSERVATORY [J].

Bundy, Kevin ;

Bershady, Matthew A. ;

Law, David R. ;

Yan, Renbin ;

Drory, Niv ;

MacDonald, Nicholas ;

Wake, David A. ;

Cherinka, Brian ;

Sanchez-Gallego, Jose R. ;

Weijmans, Anne-Marie ;

Thomas, Daniel ;

Tremonti, Christy ;

Masters, Karen ;

Coccato, Lodovico ;

Diamond-Stanic, Aleksandar M. ;

Aragon-Salamanca, Alfonso ;

Avila-Reese, Vladimir ;

Badenes, Carles ;

Falcon-Barroso, Jesus ;

Belfiore, Francesco ;

Bizyaev, Dmitry ;

Blanc, Guillermo A. ;

Bland-Hawthorn, Joss ;

Blanton, Michael R. ;

Brownstein, Joel R. ;

Byler, Nell ;

Cappellari, Michele ;

Conroy, Charlie ;

Dutton, Aaron A. ;

Emsellem, Eric ;

Etherington, James ;

Frinchaboy, Peter M. ;

Fu, Hai ;

Gunn, James E. ;

Harding, Paul ;

Johnston, Evelyn J. ;

Kauffmann, Guinevere ;

Kinemuchi, Karen ;

Klaene, Mark A. ;

Knapen, Johan H. ;

Leauthaud, Alexie ;

Li, Cheng ;

Lin, Lihwai ;

Maiolino, Roberto ;

Malanushenko, Viktor ;

Malanushenko, Elena ;

Mao, Shude ;

Maraston, Claudia ;

McDermid, Richard M. ;

Merrifield, Michael R. .

ASTROPHYSICAL JOURNAL, 2015, 798 (01)

← 1 2 3 4 5 6 7 8 →