Search Results - "Kalfountzou, E."

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  1. 1

    The largest X-ray-selected sample of z > 3 AGNs: C-COSMOS and ChaMP by Kalfountzou, E, Civano, F, Elvis, M, Trichas, M, Green, P

    “…We present results from an analysis of the largest high-redshift (z > 3) X-ray-selected active galactic nucleus (AGN) sample to date, combining the Chandra…”
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    Journal Article
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    Star formation in high-redshift quasars: excess [O ii] emission in the radio-loud population by Kalfountzou, E., Jarvis, M. J., Bonfield, D. G., Hardcastle, M. J.

    “…Abstract We investigate the [O ii] emission-line properties of 18 508 quasars at z < 1.6 drawn from the Sloan Digital Sky Survey (SDSS) quasar sample. The…”
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    Journal Article
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    The changing-look AGN NGC 1566 in quiescence with XMM-Newton: a nuclear starburst and an AGN competing in power? by Tomás, L, Matzeu, G A, Jiménez Bailón, E, Kalfountzou, E, Santos-Lleó, M, Parker, M L, Ballo, L, Loiseau, N, Ehle, M, Rodríguez-Pascual, P, González-Riestra, R

    “…ABSTRACT Star formation accretion on to the super massive black holes (SMBHs) and feedback processes link the evolution of galaxies with their SMBHs. X-ray…”
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    Journal Article
  5. 5

    Herschel-ATLAS ★ : far-infrared properties of radio-loud and radio-quiet quasars by Kalfountzou, E., Stevens, J. A., Jarvis, M. J., Hardcastle, M. J., Smith, D. J. B., Bourne, N., Dunne, L., Ibar, E., Eales, S., Ivison, R. J., Maddox, S., Smith, M. W. L., Valiante, E., de Zotti, G.

    “…We have constructed a sample of radio-loud and radio-quiet quasars from the Faint Images Radio Sky at Twenty-one centimetres and the Sloan Digital Sky Survey…”
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    EFOSC2 spectroscopy of SWIRE-CDFS galaxies by Kalfountzou, E., Trichas, M., Rowan-Robinson, M., Clements, D., Babbedge, T., Seiradakis, J. H.

    “…We present the optical spectra of a sample of 34 Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE)-Chandra Deep Field South (CDFS) sources observed with…”
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    Journal Article
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    Observational evidence that positive and negative AGN feedback depends on galaxy mass and jet power by Kalfountzou, E., Stevens, J. A., Jarvis, M. J., Hardcastle, M. J., Wilner, D., Elvis, M., Page, M. J., Trichas, M., Smith, D. J. B.

    “…Abstract Several studies support the existence of a link between the active galactic nucleus (AGN) and star formation activity. Radio jets have been argued to…”
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    Journal Article
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    EFOSC2 spectroscopy of SWIREaCDFS galaxies by Kalfountzou, E, Trichas, M, RowanaRobinson, M, Clements, D, Babbedge, T, Seiradakis, J H

    “…We present the optical spectra of a sample of 34 Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE)-Chandra Deep Field South (CDFS) sources observed with…”
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    Journal Article
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    The XXL Survey: First Results and Future by Pierre, M., Adami, C., Birkinshaw, M., Chiappetti, L., Ettori, S., Evrard, A., Gastaldello, F., Giles, P., Horellou, C., Iovino, A., Le Brun, A., Maughan, B., Maurogordato, S., McCarthy, I., Miyazaki, S., Pacaud, F., Paltani, S., Plionis, M., Reiprich, T., Sadibekova, T., Snowden, A., Surdej, J., Tsirou, M., Willis, J., Alis, S., Altieri, B., Baran, N., Benoist, C., Bongiorno, A., Butler, A., Cappi, A., Caretta, C., Ciliegi, P., Clerc, N., Coupon, J., Delhaize, J., Delvecchio, I., Democles, J., Desai, Sh, Devriendt, J., Eckert, D., Elyiv, A., Farahi, A., Ferraril, C., Fotopoulou, S., Forman, W., Georgantopoulos, I., Guglielmo, V., Huynh, M., Jerlin, N., Jones, Ch, Lavoie, S., Le Fevre, J.-P., Lieu, M., Kilbinger, M., Marulli, F., Mantz, A., McGee, S., Melin, J.-B., Melnyk, O., Moscardini, L., Piconcelli, E., Poggianti, B., Pompei, E., Ponman, T., Ramos Ceja, M. E., Rana, P., Rapetti, D., Raychaudhury, S., Ricci, M., Rottgering, H., Sahlen, M., Sauvageot, J.-L., Schimd, C., Sereno, M., Smith, G. P., Umetsu, K., Valageas, P., Valotti, A, Valtchanov, I., Veropalumbo, A., Ascaso, B., Barnes, D., Durret, F., Donahue, M., Ithana, M., Jarvis, M., Johnston-Hollitt, M., Kalfountzou, E., Kay, S., La Franca, F., Okabe, N., Muzzin, A., Rettura, A., Ricci, F., Ridl, J., Risaliti, G., Takizawa, M., Thomas, P., Truong, N.

    Published in Astronomische Nachrichten (01-03-2017)
    “…The XXL survey currently covers two 25 deg2 patches with XMM observations of approximately 10 ks. We summarize the scientific results associated with the first…”
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    Journal Article Web Resource
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    A high velocity component to the complex absorption in IRAS 13349+2438 by Parker, M. L, Matzeu, G. A, Guainazzi, M, Kalfountzou, E, Miniutti, G, Santos-Lleó, M, Schartel, N

    Published 17-07-2018
    “…We present an analysis of XMM-Newton spectra of the low-redshift quasar IRAS 13349+2438. The RGS spectrum shows a large number of absorption lines from two…”
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    Journal Article
  15. 15

    The Largest X-ray Selected Sample of z>3 AGNs: C-COSMOS & ChaMP by Kalfountzou, E, Civano, F, Elvis, M, Trichas, M, Green, P

    Published 29-08-2014
    “…We present results from an analysis of the largest high-redshift (z > 3) X-ray-selected active galactic nucleus (AGN) sample to date, combining the Chandra…”
    Get full text
    Journal Article
  16. 16

    CIELO-RGS: a catalogue of soft X-ray ionized emission lines by Mao, Junjie, Kaastra, J. S, Guainazzi, M, Gonzalez-Riestra, R, Santos-LLeo, M, Kretschmar, P, Grinberg, V, Kalfountzou, E, Ibarra, A, Matzeu, G, Parker, M, Rodriguez-Pascual, P

    Published 10-04-2019
    “…A&A 625, A122 (2019) High-resolution X-ray spectroscopy has advanced our understanding of the hot Universe by revealing physical properties like kinematics,…”
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    Journal Article
  17. 17

    Observational evidence that positive and negative AGN feedback depends on galaxy mass and jet power by Kalfountzou, E, Stevens, J. A, Jarvis, M. J, Hardcastle, M. J, Wilner, D, Elvis, M, Page, M. J, Trichas, M, Smith, D. J. B

    Published 07-06-2017
    “…Several studies support the existence of a link between the AGN and star formation activity. Radio jets have been argued to be an ideal mechanism for direct…”
    Get full text
    Journal Article
  18. 18

    Star formation in high-redshift quasars: excess [O II] emission in the radio-loud population by Kalfountzou, E, Jarvis, M. J, Bonfield, D. G, Hardcastle, M. J

    Published 11-09-2012
    “…We investigate the [O II] emission line properties of 18,508 quasars at z<1.6 drawn from the Sloan Digital Sky Survey (SDSS) quasar sample. The quasar sample…”
    Get full text
    Journal Article
  19. 19

    The XXL survey: first results and future by Adami, C, Birkinshaw, M, Chiappetti, L, Ettori, S, Evrard, A, Gastaldello, F, Giles, P, Horellou, C, Iovino, A, Koulouridis, E, Lidman, C, Brun, A. Le, Maughan, B, McCarthy, I, Miyazaki, S, Pacaud, F, Plionis, M, Reiprich, T, Smolcic, V, Snowden, S, Surdej, J, Tsirou, M, Vignali, C, Willis, J, Altieri, B, Baran, N, Benoist, C, Bongiorno, A, Bremer, M, Butler, A, Cappi, A, Caretta, C, Ciliegi, P, Corasaniti, P. S, Coupon, J, Delhaize, J, Delvecchio, I, Democles, J, Desai, Sh, Devriendt, J, Dubois, Y, Eckert, D, Elyiv, A, Ferrari, C, Fotopoulou, S, Forman, W, Georgantopoulos, I, Guglielmo, V, Huynh, M, Jerlin, N, Jones, Ch, Fevre, J. -P. Le, Lieu, M, Kilbinger, M, Marulli, F, Mantz, A, McGee, S, Melin, J. -B, Melnyk, O, Moscardini, L, Novak, M, Piconcelli, E, Pomarede, D, Pompei, E, Ponman, T, Ceja, M. E. Ramos, Ranalli, P, Rapetti, D, Raychaudhury, S, Ricci, M, Rottgering, H, Sahlén, M, Sauvageot, J. -L, Schimd, C, Sereno, M, Smith, G. P, Umetsu, K, Valageas, P, Valotti, A, Valtchanov, I, Veropalumbo, A, Ascaso, B, Barnes, D, De Petris, M, Durret, F, Donahue, M, Ithana, M, Jarvis, M, Johnston-Hollitt, M, Kalfountzou, E, Kay, S, La Franca, F, Okabe, N, Muzzin, A, Rettura, A, Ricci, F, Risaliti, G, Takizawa, M, Thomas, P, Truong, N

    Published 11-07-2017
    “…Astronomische Nachrichten, 2017 AN 338, 334 The XXL survey currently covers two 25 sq. deg. patches with XMM observations of ~10ks. We summarise the scientific…”
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    Journal Article
  20. 20

    EFOSC2 Spectroscopy of SWIRE-CDFS Galaxies by Kalfountzou, E, Trichas, M, Rowan-Robinson, M, Clements, D, Babbedge, T, Seiradakis, J

    Published 30-11-2010
    “…We present the optical spectra of a sample of 34 SWIRE-CDFS sources observed with EFOSC2 on the ESO 3.6m Telescope. We have used the spectra and spectroscopic…”
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    Journal Article