HerMES: Far infrared properties of known AGN in the HerMES fields

E. Hatziminaoglou; A. Omont; J. A. Stevens; A. Amblard; V. Arumugam; R. Auld; H. Aussel; T. Babbedge; A. Blain; J. Bock; A. Boselli; V. Buat; D. Burgarella; N. Castro-Rodríguez; A. Cava; P. Chanial; D. L. Clements; A. Conley; L. Conversi; A. Cooray; C. D. Dowell; E. Dwek; S. Dye; S. Eales; D. Elbaz; D. Farrah; M. Fox; A. Franceschini; W. Gear; J. Glenn; E. A. González Solares; M. Griffin; M. Halpern; E. Ibar; K. Isaak; R. J. Ivison; G. Lagache; L. Levenson; N. Lu; S. Madden; B. Maffei; G. Mainetti; L. Marchetti; A. M.J. Mortier; H. T. Nguyen; B. O'Halloran; S. J. Oliver; M. J. Page; P. Panuzzo; A. Papageorgiou; C. P. Pearson; I. Pérez-Fournon; M. Pohlen; J. I. Rawlings; D. Rigopoulou; D. Rizzo; I. G. Roseboom; M. Rowan-Robinson; M. Sanchez Portal; B. Schulz; D. Scott; N. Seymour; D. L. Shupe; A. J. Smith; M. Symeonidis; M. Trichas; K. E. Tugwell; M. Vaccari; I. Valtchanov; L. Vigroux; L. Wang; R. Ward; G. Wright; C. K. Xu; M. Zemcov

doi:10.1051/0004-6361/201014679

HerMES: Far infrared properties of known AGN in the HerMES fields

E. Hatziminaoglou, A. Omont, J. A. Stevens, A. Amblard, V. Arumugam, R. Auld, H. Aussel, T. Babbedge, A. Blain, J. Bock, A. Boselli, V. Buat, D. Burgarella, N. Castro-Rodríguez, A. Cava, P. Chanial, D. L. Clements, A. Conley, L. Conversi, A. CoorayC. D. Dowell, E. Dwek, S. Dye, S. Eales, D. Elbaz, D. Farrah, M. Fox, A. Franceschini, W. Gear, J. Glenn, E. A. González Solares, M. Griffin, M. Halpern, E. Ibar, K. Isaak, R. J. Ivison, G. Lagache, L. Levenson, N. Lu, S. Madden, B. Maffei, G. Mainetti, L. Marchetti, A. M.J. Mortier, H. T. Nguyen, B. O'Halloran, S. J. Oliver, M. J. Page, P. Panuzzo, A. Papageorgiou, C. P. Pearson, I. Pérez-Fournon, M. Pohlen, J. I. Rawlings, D. Rigopoulou, D. Rizzo, I. G. Roseboom, M. Rowan-Robinson, M. Sanchez Portal, B. Schulz, D. Scott, N. Seymour, D. L. Shupe, A. J. Smith, M. Symeonidis, M. Trichas, K. E. Tugwell, M. Vaccari, I. Valtchanov, L. Vigroux, L. Wang, R. Ward, G. Wright, C. K. Xu, M. Zemcov

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Abstract

Nuclear and starburst activity are known to often occur concomitantly. Herschel-SPIRE provides sampling of the far-infrared (FIR) spectral energy distributions (SEDs) of type 1 and type 2 AGN, allowing for the separation between the hot dust (torus) and cold dust (starburst) emission. We study large samples of spectroscopically confirmed type 1 and type 2 AGN lying within the Herschel Multi-tiered Extragalactic Survey (HerMES) fields observed during the science demonstration phase, aiming to understand their FIR colour distributions and constrain their starburst contributions. We find that one third of the spectroscopically confirmed AGN in the HerMES fields have 5σ detections at 250 μm, in agreement with previous (sub)mm AGN studies. Their combined Spitzer-MIPS and Herschel-SPIRE colours (specifically S₂₅₀/S ₇₀ vs S₇₀/S₂₄) quite clearly separate them from the non-AGN, star forming galaxy population, as their 24 μm flux is dominated by the hot torus emission. However, their SPIRE colours alone do not differ from those of non-AGN galaxies. SED fitting shows that all those AGN need a starburst component to fully account for their FIR emission. For objects at z > 2 we find a correlation between the infrared luminosity attributed to the starburst component, L_SB, and the AGN accretion luminosity, L _acc, with L_SB proptoL_acc^0.35. Type 2 AGN detected at 250 μm show on average higher L_SB than type 1 objects but their number is still too low to establish whether this trend indicates stronger star formation activity.

Original language	English
Article number	L33
Journal	Astronomy and Astrophysics
Volume	518
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361/201014679
Publication status	Published - 16 Jul 2010
Externally published	Yes

Keywords

Galaxies: Seyfert
Galaxies: active
Galaxies: star formation
Infrared: general
Quasars: general

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10.1051/0004-6361/201014679

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Hatziminaoglou, E., Omont, A., Stevens, J. A., Amblard, A., Arumugam, V., Auld, R., Aussel, H., Babbedge, T., Blain, A., Bock, J., Boselli, A., Buat, V., Burgarella, D., Castro-Rodríguez, N., Cava, A., Chanial, P., Clements, D. L., Conley, A., Conversi, L., ... Zemcov, M. (2010). HerMES: Far infrared properties of known AGN in the HerMES fields. Astronomy and Astrophysics, 518(2), Article L33. https://doi.org/10.1051/0004-6361/201014679

@article{3c414f5c0b204f649c7bc23b06d93af7,

title = "HerMES: Far infrared properties of known AGN in the HerMES fields",

abstract = "Nuclear and starburst activity are known to often occur concomitantly. Herschel-SPIRE provides sampling of the far-infrared (FIR) spectral energy distributions (SEDs) of type 1 and type 2 AGN, allowing for the separation between the hot dust (torus) and cold dust (starburst) emission. We study large samples of spectroscopically confirmed type 1 and type 2 AGN lying within the Herschel Multi-tiered Extragalactic Survey (HerMES) fields observed during the science demonstration phase, aiming to understand their FIR colour distributions and constrain their starburst contributions. We find that one third of the spectroscopically confirmed AGN in the HerMES fields have 5σ detections at 250 μm, in agreement with previous (sub)mm AGN studies. Their combined Spitzer-MIPS and Herschel-SPIRE colours (specifically S250/S 70 vs S70/S24) quite clearly separate them from the non-AGN, star forming galaxy population, as their 24 μm flux is dominated by the hot torus emission. However, their SPIRE colours alone do not differ from those of non-AGN galaxies. SED fitting shows that all those AGN need a starburst component to fully account for their FIR emission. For objects at z > 2 we find a correlation between the infrared luminosity attributed to the starburst component, LSB, and the AGN accretion luminosity, L acc, with LSB proptoLacc0.35. Type 2 AGN detected at 250 μm show on average higher LSB than type 1 objects but their number is still too low to establish whether this trend indicates stronger star formation activity.",

keywords = "Galaxies: Seyfert, Galaxies: active, Galaxies: star formation, Infrared: general, Quasars: general",

author = "E. Hatziminaoglou and A. Omont and Stevens, \{J. A.\} and A. Amblard and V. Arumugam and R. Auld and H. Aussel and T. Babbedge and A. Blain and J. Bock and A. Boselli and V. Buat and D. Burgarella and N. Castro-Rodr{\'i}guez and A. Cava and P. Chanial and Clements, \{D. L.\} and A. Conley and L. Conversi and A. Cooray and Dowell, \{C. D.\} and E. Dwek and S. Dye and S. Eales and D. Elbaz and D. Farrah and M. Fox and A. Franceschini and W. Gear and J. Glenn and \{Gonz{\'a}lez Solares\}, \{E. A.\} and M. Griffin and M. Halpern and E. Ibar and K. Isaak and Ivison, \{R. J.\} and G. Lagache and L. Levenson and N. Lu and S. Madden and B. Maffei and G. Mainetti and L. Marchetti and Mortier, \{A. M.J.\} and Nguyen, \{H. T.\} and B. O'Halloran and Oliver, \{S. J.\} and Page, \{M. J.\} and P. Panuzzo and A. Papageorgiou and Pearson, \{C. P.\} and I. P{\'e}rez-Fournon and M. Pohlen and Rawlings, \{J. I.\} and D. Rigopoulou and D. Rizzo and Roseboom, \{I. G.\} and M. Rowan-Robinson and \{Sanchez Portal\}, M. and B. Schulz and D. Scott and N. Seymour and Shupe, \{D. L.\} and Smith, \{A. J.\} and M. Symeonidis and M. Trichas and Tugwell, \{K. E.\} and M. Vaccari and I. Valtchanov and L. Vigroux and L. Wang and R. Ward and G. Wright and Xu, \{C. K.\} and M. Zemcov",

year = "2010",

month = jul,

day = "16",

doi = "10.1051/0004-6361/201014679",

language = "English",

volume = "518",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "2",

}

Hatziminaoglou, E, Omont, A, Stevens, JA, Amblard, A, Arumugam, V, Auld, R, Aussel, H, Babbedge, T, Blain, A, Bock, J, Boselli, A, Buat, V, Burgarella, D, Castro-Rodríguez, N, Cava, A, Chanial, P, Clements, DL, Conley, A, Conversi, L, Cooray, A, Dowell, CD, Dwek, E, Dye, S, Eales, S, Elbaz, D, Farrah, D, Fox, M, Franceschini, A, Gear, W, Glenn, J, González Solares, EA, Griffin, M, Halpern, M, Ibar, E, Isaak, K, Ivison, RJ, Lagache, G, Levenson, L, Lu, N, Madden, S, Maffei, B, Mainetti, G, Marchetti, L, Mortier, AMJ, Nguyen, HT, O'Halloran, B, Oliver, SJ, Page, MJ, Panuzzo, P, Papageorgiou, A, Pearson, CP, Pérez-Fournon, I, Pohlen, M, Rawlings, JI, Rigopoulou, D, Rizzo, D, Roseboom, IG, Rowan-Robinson, M, Sanchez Portal, M, Schulz, B, Scott, D, Seymour, N, Shupe, DL, Smith, AJ, Symeonidis, M, Trichas, M, Tugwell, KE, Vaccari, M, Valtchanov, I, Vigroux, L, Wang, L, Ward, R, Wright, G, Xu, CK & Zemcov, M 2010, 'HerMES: Far infrared properties of known AGN in the HerMES fields', Astronomy and Astrophysics, vol. 518, no. 2, L33. https://doi.org/10.1051/0004-6361/201014679

TY - JOUR

T1 - HerMES

T2 - Far infrared properties of known AGN in the HerMES fields

AU - Hatziminaoglou, E.

AU - Omont, A.

AU - Stevens, J. A.

AU - Amblard, A.

AU - Arumugam, V.

AU - Auld, R.

AU - Aussel, H.

AU - Babbedge, T.

AU - Blain, A.

AU - Bock, J.

AU - Boselli, A.

AU - Buat, V.

AU - Burgarella, D.

AU - Castro-Rodríguez, N.

AU - Cava, A.

AU - Chanial, P.

AU - Clements, D. L.

AU - Conley, A.

AU - Conversi, L.

AU - Cooray, A.

AU - Dowell, C. D.

AU - Dwek, E.

AU - Dye, S.

AU - Eales, S.

AU - Elbaz, D.

AU - Farrah, D.

AU - Fox, M.

AU - Franceschini, A.

AU - Gear, W.

AU - Glenn, J.

AU - González Solares, E. A.

AU - Griffin, M.

AU - Halpern, M.

AU - Ibar, E.

AU - Isaak, K.

AU - Ivison, R. J.

AU - Lagache, G.

AU - Levenson, L.

AU - Lu, N.

AU - Madden, S.

AU - Maffei, B.

AU - Mainetti, G.

AU - Marchetti, L.

AU - Mortier, A. M.J.

AU - Nguyen, H. T.

AU - O'Halloran, B.

AU - Oliver, S. J.

AU - Page, M. J.

AU - Panuzzo, P.

AU - Papageorgiou, A.

AU - Pearson, C. P.

AU - Pérez-Fournon, I.

AU - Pohlen, M.

AU - Rawlings, J. I.

AU - Rigopoulou, D.

AU - Rizzo, D.

AU - Roseboom, I. G.

AU - Rowan-Robinson, M.

AU - Sanchez Portal, M.

AU - Schulz, B.

AU - Scott, D.

AU - Seymour, N.

AU - Shupe, D. L.

AU - Smith, A. J.

AU - Symeonidis, M.

AU - Trichas, M.

AU - Tugwell, K. E.

AU - Vaccari, M.

AU - Valtchanov, I.

AU - Vigroux, L.

AU - Wang, L.

AU - Ward, R.

AU - Wright, G.

AU - Xu, C. K.

AU - Zemcov, M.

PY - 2010/7/16

Y1 - 2010/7/16

N2 - Nuclear and starburst activity are known to often occur concomitantly. Herschel-SPIRE provides sampling of the far-infrared (FIR) spectral energy distributions (SEDs) of type 1 and type 2 AGN, allowing for the separation between the hot dust (torus) and cold dust (starburst) emission. We study large samples of spectroscopically confirmed type 1 and type 2 AGN lying within the Herschel Multi-tiered Extragalactic Survey (HerMES) fields observed during the science demonstration phase, aiming to understand their FIR colour distributions and constrain their starburst contributions. We find that one third of the spectroscopically confirmed AGN in the HerMES fields have 5σ detections at 250 μm, in agreement with previous (sub)mm AGN studies. Their combined Spitzer-MIPS and Herschel-SPIRE colours (specifically S250/S 70 vs S70/S24) quite clearly separate them from the non-AGN, star forming galaxy population, as their 24 μm flux is dominated by the hot torus emission. However, their SPIRE colours alone do not differ from those of non-AGN galaxies. SED fitting shows that all those AGN need a starburst component to fully account for their FIR emission. For objects at z > 2 we find a correlation between the infrared luminosity attributed to the starburst component, LSB, and the AGN accretion luminosity, L acc, with LSB proptoLacc0.35. Type 2 AGN detected at 250 μm show on average higher LSB than type 1 objects but their number is still too low to establish whether this trend indicates stronger star formation activity.

AB - Nuclear and starburst activity are known to often occur concomitantly. Herschel-SPIRE provides sampling of the far-infrared (FIR) spectral energy distributions (SEDs) of type 1 and type 2 AGN, allowing for the separation between the hot dust (torus) and cold dust (starburst) emission. We study large samples of spectroscopically confirmed type 1 and type 2 AGN lying within the Herschel Multi-tiered Extragalactic Survey (HerMES) fields observed during the science demonstration phase, aiming to understand their FIR colour distributions and constrain their starburst contributions. We find that one third of the spectroscopically confirmed AGN in the HerMES fields have 5σ detections at 250 μm, in agreement with previous (sub)mm AGN studies. Their combined Spitzer-MIPS and Herschel-SPIRE colours (specifically S250/S 70 vs S70/S24) quite clearly separate them from the non-AGN, star forming galaxy population, as their 24 μm flux is dominated by the hot torus emission. However, their SPIRE colours alone do not differ from those of non-AGN galaxies. SED fitting shows that all those AGN need a starburst component to fully account for their FIR emission. For objects at z > 2 we find a correlation between the infrared luminosity attributed to the starburst component, LSB, and the AGN accretion luminosity, L acc, with LSB proptoLacc0.35. Type 2 AGN detected at 250 μm show on average higher LSB than type 1 objects but their number is still too low to establish whether this trend indicates stronger star formation activity.

KW - Galaxies: Seyfert

KW - Galaxies: active

KW - Galaxies: star formation

KW - Infrared: general

KW - Quasars: general

UR - https://www.scopus.com/pages/publications/77954785966

U2 - 10.1051/0004-6361/201014679

DO - 10.1051/0004-6361/201014679

M3 - Article

SN - 0004-6361

VL - 518

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

M1 - L33

ER -

HerMES: Far infrared properties of known AGN in the HerMES fields

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