The starburst-active galactic nucleus connection in the merger galaxy Mrk 938: an infrared and X-ray view by Esquej, P, Alonso-Herrero, A, Perez-Garcia, A, Pereira-Santaella, M, Rigopoulou, D, Sanchez-Portal, M, Castillo, M, Almeida, C, Coia, D, Altieri, B, Acosta-Pulido, J, Conversi, L, Gonzalez-Serrano, J, Hatziminaoglou, E, Povic, M, Rodriguez-Espinosa, J, Valtchanov, I

LOCAL LUMINOUS INFRARED GALAXIES. II. ACTIVE GALACTIC NUCLEUS ACTIVITY FROM SPITZER/INFRARED SPECTROGRAPH SPECTRA by Alonso-Herrero, A, Pereira-Santaella, M, Rieke, G, Rigopoulou, D

“…We quantify the active galactic nucleus (AGN) contribution to the mid-infrared (mid-IR) and the total infrared (IR, 8-1000 μm) emission in a complete volume-limited sample of 53 local luminous infrared galaxies (LIRGs, L IR = 1011-1012 L ⊙). …”

Galaxies: The short wavelength view by Lutz, D, Genzel, R, Sturm, E, Rigopoulou, D, Tran, D, Moorwood, A, Spoon, H, Forster-Schreiber, N, Thornley, M, Alexander, T, Sternberg, A

“…They are absent close to an active galactic nucleus but can be strong on larger scales of the AGN host, in particular if there is intense circumnuclear star formation. …”

The nature of luminous X-ray sources with mid-infrared counterparts by Alonso-Herrero, A, Perez-Gonzalez, P, Rigby, J, Rieke, G, Le Floc'h, E, Barmby, P, Page, M, Papovich, C, Dole, H, Egami, E, Huang, J, Rigopoulou, D, Cristobal-Hornillos, D, Eliche-Moral, C, Balcells, M, Prieto, M, Erwin, P, Engelbracht, C, Gordon, K, Werner, M, Willner, S, Fazio, G, Frayer, D, Hines, D, Kelly, D

“…Only about one-quarter of the hard X-ray/24 μm sources show pure type 1 active galactic nucleus (AGN) SEDs. More than half of the X-ray/24 μm sources have stellar emission-dominated or obscured SEDs, similar to those of local type 2 AGN and spiral/starburst galaxies. …”

Herschel observations and a model for IRAS 08572+3915: a candidate for the most luminous infrared galaxy in the local (z < 0.2) Universe by Efstathiou, A, Pearson, C, Farrah, D, Rigopoulou, D, Gracia-Carpio, J, Verma, A, Spoon, H, Afonso, J, Bernard-Salas, J, Clements, D, Cooray, A, Cormier, D, Etxaluze, M, Fischer, J, Gonzalez-Alfonso, E, Hurley, P, Lebouteiller, V, Oliver, S, Rowan-Robinson, M, Sturm, E

“…The model suggests that this object is powered by an active galactic nucleus (AGN) with a fairly smooth torus viewed almost edge-on and a very young starburst. …”

DIAGNOSTICS OF AGN-DRIVEN MOLECULAR OUTFLOWS IN ULIRGs FROM HERSCHEL-PACS OBSERVATIONS OF OH AT 119 mu m by Spoon, H, Farrah, D, Lebouteiller, V, Gonzalez-Alfonso, E, Bernard-Salas, J, Urrutia, T, Rigopoulou, D, Westmoquette, MS, Smith, H, Afonso, J, Pearson, C, Cormier, D, Efstathiou, A, Borys, C, Verma, A, Etxaluze, M, Clements, D

“…Since outflow velocities above 500-700 km s-1 are thought to require an active galactic nucleus (AGN) to drive them, about two-thirds of our ULIRG sample may host AGN-driven molecular outflows. …”

Far-infrared metallicity diagnostics: application to local ultraluminous infrared galaxies by Pereira-Santaella, M, Rigopoulou, D, Farrah, D, Lebouteiller, V, Li, J

“…We show that this ratio produces robust metallicities in the presence of an active galactic nucleus and is insensitive to changes in the age of the ionizing stellar. …”

HerMES: THE FAR-INFRARED EMISSION FROM DUST-OBSCURED GALAXIES by Calanog, J, Wardlow, J, Fu, H, Cooray, A, Assef, R, Bock, J, Casey, C, Conley, A, Farrah, D, Ibar, E, Kartaltepe, J, Magdis, G, Marchetti, L, Oliver, S, Perez-Fournon, I, Riechers, D, Rigopoulou, D, Roseboom, I, Schulz, B, Scott, D, Symeonidis, M, Vaccari, M, Viero, M, Zemcov, M

“…Dust-obscured galaxies (DOGs) are an ultraviolet-faint, infrared-bright galaxy population that reside at z ∼ 2 and are believed to be in a phase of dusty star-forming and active galactic nucleus (AGN) activity. We present far-infrared (far-IR) observations of a complete sample of DOGs in the 2 deg2 of the Cosmic Evolution Survey. …”

The roles of star formation and AGN activity of IRS sources in the HerMES fields by Feltre, A, Hatziminaoglou, E, Hernan-Caballero, A, Fritz, J, Franceschini, A, Bock, J, Cooray, A, Farrah, D, Solares, E, Ibar, E, Isaak, K, Lo Faro, B, Marchetti, L, Oliver, S, Page, M, Rigopoulou, D, Roseboom, I, Symeonidis, M, Vaccari, M

“…In this work, we explore the impact of the presence of an active galactic nucleus (AGN) on the mid- and far-infrared (IR) properties of galaxies as well as the effects of simultaneous AGN and starburst activity in the same galaxies. …”

FAR-INFRARED FINE-STRUCTURE LINE DIAGNOSTICS OF ULTRALUMINOUS INFRARED GALAXIES by Farrah, D, Lebouteiller, V, Spoon, H, Bernard-Salas, J, Pearson, C, Rigopoulou, D, Smith, H, Gonzalez-Alfonso, E, Clements, D, Efstathiou, A, Cormier, D, Afonso, J, Petty, S, Harris, K, Hurley, P, Borys, C, Verma, A, Cooray, A, Salvatelli, V

“…We do not find relationships between far-IR line properties and several other parameters: active galactic nucleus (AGN) activity, merger stage, mid-IR excitation, and SMBH mass. …”

A far-infrared spectroscopic survey of intermediate redshift (ultra) luminous infrared galaxies by Magdis, G, Rigopoulou, D, Hopwood, R, Huang, J, Farrah, D, Pearson, C, Alonso-Herrero, A, Bock, J, Clements, D, Cooray, A, Griffin, M, Oliver, S, Perez Fournon, I, Riechers, D, Swinyard, B, Scott, D, Thatte, N, Valtchanov, I, Vaccari, M

“…Using our sample to bridge local and high-z [C II] observations, we find that the majority of galaxies at all redshifts and all luminosities follow an L C II –L FIR relation with a slope of unity, from which local ULIRGs and high- z active-galactic-nucleus-dominated sources are clear outliers. …”

Observations of the Hubble deep field south with the Infrared space observatory - II. Associations and star formation rates by Mann, R, Oliver, S, Carballo, R, Franceschini, A, Rowan-Robinson, M, Heavens, A, Kontizas, M, Elbaz, D, Dapergolas, A, Kontizas, E, Granato, G, Silva, L, Rigopoulou, D, Gonzalez-Serrano, J, Verma, A, Serjeant, S, Efstathiou, A, van der Werf, P

“…(Paper I): eight of them are identified as stars, one is definitely an active galactic nucleus (AGN), a second seems likely to be an AGN too, while the remaining 22 appear to be normal spiral or starburst galaxies. …”

Physical conditions of the interstellar medium of high-redshift, strongly lensed submillimetre galaxies from the Herschel-ATLAS by Valtchanov, I, Virdee, J, Ivison, R, Swinyard, B, van der Werf, P, Rigopoulou, D, da Cunha, E, Lupu, R, Benford, D, Riechers, D, Smail, I, Jarvis, M, Pearson, C, Gomez, H, Hopwood, R, Altieri, B, Birkinshaw, M, Coia, D, Conversi, L, Cooray, A, De Zotti, G, Dunne, L, Frayer, D, Leeuw, L, Marston, A

“…The radio observations indicate that SDP.81 deviates significantly from the local far-infrared/radio (FIR/radio) correlation, which hints that some fraction of the radio emission is coming from an active galactic nucleus (AGN). The constraints on the source size from millimetre-wave observations put a very conservative upper limit of the possible AGN contribution to less than 33 per cent. …”

Spatially resolved cold molecular outflows in ULIRGs by Pereira-Santaella, M, Colina, L, Garcia-Burillo, S, Combes, F, Emonts, B, Aalto, S, Alonso-Herrero, A, Arribas, S, Henkel, C, Labiano, A, Muller, S, Lopez, J, Rigopoulou, D, Werf, P

“…The origin of these outflows can be explained by the strong nuclear starbursts although the contribution of an obscured active galactic nucleus cannot be completely ruled out. The position angle (PA) of the outflowing gas along the kinematic minor axis of the nuclear molecular disk suggests that the outflow axis is perpendicular to the disk for three of these outflows. …”

The Galaxy Activity, Torus, and Outflow Survey (GATOS): II. Torus and polar dust emission in nearby Seyfert galaxies by Alonso-Herrero, A, Garcia-Burillo, S, Honig, SF, Garcia-Bernete, I, Ramos Almeida, C, Gonzalez-Martin, O, Lopez-Rodriguez, E, Boorman, PG, Bunker, AJ, Burtscher, L, Combes, F, Davies, R, Diaz-Santos, T, Gandhi, P, Garcia-Lorenzo, B, Hicks, EKS, Hunt, LK, Ichikawa, K, Imanishi, M, Izumi, T, Labiano, A, Levenson, NA, Packham, C, Pereira-Santaella, M, Ricci, C, Rigopoulou, D, Roche, P, Rosario, DJ, Rouan, D, Shimizu, T, Stalevski, M, Wada, K, Williamson, D

“…The wind component is more relevant at high Eddington ratios and/or active galactic nucleus luminosities, and polar dust emission is predicted at nuclear column densities of up to ∼10²⁴ cm^−2. …”