Weighing black holes using open-loop focus corrections for LGS-AO observations of galaxy nuclei at Gemini Observatory

Proceedings of SPIE - The International Society for Optical Engineering 7736:PART 1 (2010)

Authors:

RM McDermid, D Krajnovic, M Cappellari, C Trujillo, J Christou, RL Davies

Abstract:

We present observations of early-type galaxies with laser guide star adaptive optics (LGS AO) obtained at Gemini North telescope using the NIFS integral field unit (IFU). We employ an innovative technique where the focus compensation due to the changing distance to the sodium layer is made 'open loop', allowing the extended galaxy nucleus to be used only for tip-tilt correction. The purpose of these observations is to determine high spatial resolution stellar kinematics within the nuclei of these galaxies to determine the masses of the super-massive black holes. The resulting data have spatial resolution of 0.2" FWHM or better. This is sufficient to positively constrain the presence of the central black hole in even low-mass early-type galaxies, suggesting that larger samples of such objects could be observed with this technique in the future. The open-loop focus correction technique is a supported queue-observing mode at Gemini, significantly extending the sky coverage in particular for faint, extended guide sources. We also provide preliminary results from tests combining tip/tilt correction from the Gemini peripheral guider with on-axis LGS. The current test system demonstrates feasibility of this mode, providing about a factor 2-3 improvement over natural seeing. With planned upgrades to the peripheral wave-front sensor, we hope to provide close to 100% sky coverage with low Strehl corrections, or 'improved seeing', significantly increasing flux concentration for deep field and extended object studies. © 2010 SPIE.

Herschel ATLAS: The cosmic star formation history of quasar host galaxies

Astronomy and Astrophysics 518:8 (2010)

Authors:

S Serjeant, F Bertoldi, AW Blain, DL Clements, A Cooray, L Danese, J Dunlop, L Dunne, S Eales, J Falder, E Hatziminaoglou, DH Hughes, E Ibar, MJ Jarvis, A Lawrence, MG Lee, M Michałowski, M Negrello, A Omont, M Page, C Pearson, P Van Der Werf, G White, A Amblard, R Auld, M Baes, DG Bonfield, D Burgarella, S Buttiglione, A Cava, A Dariush, G De Zotti, S Dye, D Frayer, J Fritz, J Gonzalez-Nuevo, D Herranz, RJ Ivison, G Lagache, L Leeuw, M Lopez-Caniego, S Maddox, E Pascale, M Pohlen, E Rigby, G Rodighiero, S Samui, B Sibthorpe, DJB Smith, P Temi, M Thompson, I Valtchanov, A Verma

Abstract:

We present a derivation of the star formation rate per comoving volume of quasar host galaxies, derived from stacking analyses of far-infrared to mm-wave photometry of quasars with redshifts 0 < z < 6 and absolute I-band magnitudes -22 > IAB > -32 We use the science demonstration observations of the first ∼ 16 deg2 from the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) in which there are 240 quasars from the Sloan Digital Sky Survey (SDSS) and a further 171 from the 2dF-SDSS LRG and QSO (2SLAQ) survey. We supplement this data with a compilation of data from IRAS, ISO, Spitzer, SCUBA and MAMBO. H-ATLAS alone statistically detects the quasars in its survey area at > 5σ at 250, 350 and 500 μ m. From the compilation as a whole we find striking evidence of downsizing in quasar host galaxy formation: low-luminosity quasars with absolute magnitudes in the range -22 > IAB > -24 have a comoving star formation rate (derived from 100 μ m rest-frame luminosities) peaking between redshifts of 1 and 2, while high-luminosity quasars with IAB < -26 have a maximum contribution to the star formation density at z ∼ 3. The volume-averaged star formation rate of -22 > IAB > -24 quasars evolves as (1 + z)2.3±0.7 at z < 2, but the evolution at higher luminosities is much faster reaching (1 + z) 10±1 at -26 > IAB > -28. We tentatively interpret this as a combination of a declining major merger rate with time and gas consumption reducing fuel for both black hole accretion and star formation. © 2010 ESO.

Herschel-PACS spectroscopy of IR-bright galaxies at high redshift

Astronomy and Astrophysics 518:4 (2010)

Authors:

E Sturm, A Verma, J Graciá-Carpio, S Hailey-Dunsheath, A Contursi, J Fischer, E González-Alfonso, A Poglitsch, A Sternberg, R Genzel, D Lutz, L Tacconi, N Christopher, J De Jong

Abstract:

We present Herschel-PACS observations of rest-frame mid-infrared and far-infrared spectral line emissions from two lensed, ultraluminous infrared galaxies at high redshift: MIPS J142824.0+352619 (MIPS J1428), a starburst-dominated system at z = 1.3, and IRAS F10214+4724 (F10214), a source at z = 2.3 hosting both star-formation and a luminous AGN. We have detected [OI]63μm and [OIII]52μm in MIPS J1428, and tentatively [O III]52μm in F10214. Together with the recent ZEUS-CSO [CII]158μm detection in MIPS J1428 we can for the first time combine [OI], [CII] and far-IR (FIR) continuum measurements for PDR modeling of an ultra-luminous (LIR ≥ 10 12 L⊙) star forming galaxy at the peak epoch of cosmic star formation. We find that MIPS J1428, contrary to average local ULIRGs, does not show a deficit in [OI] relative to FIR. The combination of far-UV flux G0 and gas density n (derived from the PDR models), as well as the star formation efficiency (derived from CO and FIR) is similar to normal or starburst galaxies, despite the high infrared luminosity of this system. In contrast, F10214 has stringent upper limits on [O IV] and [S III], and an [O III]/FIR ratio at least an order of magnitude lower than local starbursts or AGN, similar to local ULIRGs. © ESO 2010.

Infrared-correlated 31-GHz radio emission from Orion East

\mnras 407 (2010) 2223-2229

Authors:

C Dickinson, S Casassus, RD Davies, JR Allison, R Bustos, K Cleary, RJ Davis, ME Jones, TJ Pearson, ACS Readhead, R Reeves, AC Taylor, CT Tibbs, RA Watson

Search for new particles in two-jet final states in 7 TeV proton-proton collisions with the ATLAS detector at the LHC.

Physical review letters 105:16 (2010) 161801

Authors:

G Aad, B Abbott, J Abdallah, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, H Abramowicz, H Abreu, E Acerbi, BS Acharya, M Ackers, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, C Adorisio, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, H Ahmed, M Ahsan, G Aielli, T Akdogan, TPA Akesson, G Akimoto, AV Akimov, A Aktas, MS Alam, MA Alam, S Albrand, M Aleksa, IN Aleksandrov, M Aleppo, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, J Alison, M Aliyev, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, J Alonso, MG Alviggi, K Amako, P Amaral, G Ambrosio, C Amelung, VV Ammosov, A Amorim, G Amorós, N Amram, C Anastopoulos, T Andeen, CF Anders, KJ Anderson, A Andreazza, V Andrei, M-L Andrieux, XS Anduaga, A Angerami, F Anghinolfi, N Anjos, A Annovi, A Antonaki, M Antonelli, S Antonelli, J Antos, B Antunovic, F Anulli, S Aoun, G Arabidze, I Aracena, Y Arai, ATH Arce, JP Archambault, S Arfaoui, J-F Arguin, T Argyropoulos, E Arik, M Arik, AJ Armbruster, KE Arms, SR Armstrong, O Arnaez, C Arnault, A Artamonov, D Arutinov, M Asai, S Asai, R Asfandiyarov, S Ask, B Asman, D Asner, L Asquith, K Assamagan, A Astbury, A Astvatsatourov, G Atoian, B Aubert, B Auerbach, E Auge, K Augsten, M Aurousseau, N Austin, G Avolio, R Avramidou, D Axen, C Ay, G Azuelos, Y Azuma, MA Baak, G Baccaglioni, C Bacci, AM Bach, H Bachacou, K Bachas, G Bachy, M Backes, E Badescu, P Bagnaia, Y Bai, DC Bailey, T Bain, JT Baines, OK Baker, MD Baker, S Baker, F Baltasar Dos Santos Pedrosa, E Banas, P Banerjee, S Banerjee, D Banfi, A Bangert, V Bansal, SP Baranov, S Baranov, A Barashkou, A Barbaro Galtieri, T Barber, EL Barberio, D Barberis, M Barbero, DY Bardin, T Barillari, M Barisonzi, T Barklow, N Barlow, BM Barnett, RM Barnett, A Baroncelli, M Barone, AJ Barr, F Barreiro, J Barreiro Guimarães da Costa, P Barrillon, R Bartoldus, D Bartsch, RL Bates, L Batkova, JR Batley, A Battaglia, M Battistin, G Battistoni, F Bauer, HS Bawa, M Bazalova, B Beare, T Beau, PH Beauchemin, R Beccherle, P Bechtle, GA Beck, HP Beck, M Beckingham, KH Becks, AJ Beddall, A Beddall, VA Bednyakov, C Bee, M Begel, S Behar Harpaz, PK Behera, M Beimforde, C Belanger-Champagne, B Belhorma, PJ Bell, WH Bell, G Bella, L Bellagamba, F Bellina, G Bellomo, M Bellomo, A Belloni, K Belotskiy, O Beltramello, S Ben Ami, O Benary, D Benchekroun, C Benchouk, M Bendel, BH Benedict, N Benekos, Y Benhammou, GP Benincasa, DP Benjamin, M Benoit, JR Bensinger, K Benslama, S Bentvelsen, M Beretta, D Berge, E Bergeaas Kuutmann, N Berger, F Berghaus, E Berglund, J Beringer, K Bernardet, P Bernat, R Bernhard, C Bernius, T Berry, A Bertin, F Bertinelli, F Bertolucci, S Bertolucci, MI Besana, N Besson, S Bethke, W Bhimji, RM Bianchi, M Bianco, O Biebel, J Biesiada, M Biglietti, H Bilokon, M Binder, M Bindi, S Binet, A Bingul, C Bini, C Biscarat, R Bischof, U Bitenc, KM Black, RE Blair, J-B Blanchard, G Blanchot, C Blocker, J Blocki, A Blondel, W Blum, U Blumenschein, C Boaretto, GJ Bobbink, A Bocci, D Bocian, R Bock, CR Boddy, M Boehler, J Boek, N Boelaert, S Böser, JA Bogaerts, A Bogouch, C Bohm, J Bohm, V Boisvert, T Bold, V Boldea, VG Bondarenko, M Bondioli, M Boonekamp, G Boorman, CN Booth, P Booth, JRA Booth, S Bordoni, C Borer, A Borisov, G Borissov, I Borjanovic, S Borroni, K Bos, D Boscherini, M Bosman, H Boterenbrood, D Botterill, J Bouchami, J Boudreau, EV Bouhova-Thacker, C Boulahouache, C Bourdarios, A Boveia, J Boyd, IR Boyko, NI Bozhko, I Bozovic-Jelisavcic, S Braccini, J Bracinik, A Braem, E Brambilla, P Branchini, GW Brandenburg, A Brandt, G Brandt, O Brandt, U Bratzler, B Brau, JE Brau, HM Braun, B Brelier, J Bremer, R Brenner, S Bressler, D Breton, ND Brett, PG Bright-Thomas, D Britton, FM Brochu, I Brock, R Brock, TJ Brodbeck, E Brodet, F Broggi, C Bromberg, G Brooijmans, WK Brooks, G Brown, E Brubaker, PA Bruckman de Renstrom, D Bruncko, R Bruneliere, S Brunet, A Bruni, G Bruni, M Bruschi, T Buanes, F Bucci, J Buchanan, NJ Buchanan, P Buchholz, RM Buckingham, AG Buckley, IA Budagov, B Budick, V Büscher, L Bugge, D Buira-Clark, EJ Buis, O Bulekov, M Bunse, T Buran, H Burckhart, S Burdin, T Burgess, S Burke, E Busato, P Bussey, CP Buszello, F Butin, B Butler, JM Butler, CM Buttar, JM Butterworth, T Byatt, J Caballero, S Cabrera Urbán, M Caccia, D Caforio, O Cakir, P Calafiura, G Calderini, P Calfayan, R Calkins, LP Caloba, R Caloi, D Calvet, A Camard, P Camarri, M Cambiaghi, D Cameron, J Cammin, S Campana, M Campanelli, V Canale, F Canelli, A Canepa, J Cantero, L Capasso, MDM Capeans Garrido, I Caprini, M Caprini, M Caprio, D Capriotti, M Capua, R Caputo, C Caramarcu, R Cardarelli, T Carli, G Carlino, L Carminati, B Caron, S Caron, C Carpentieri, GD Carrillo Montoya, S Carron Montero, AA Carter, JR Carter, J Carvalho, D Casadei, MP Casado, M Cascella, C Caso, AM Castaneda Hernandez, E Castaneda-Miranda, V Castillo Gimenez, NF Castro, G Cataldi, F Cataneo, A Catinaccio, JR Catmore, A Cattai, G Cattani, S Caughron, D Cauz, A Cavallari, P Cavalleri, D Cavalli, M Cavalli-Sforza, V Cavasinni, A Cazzato, F Ceradini, C Cerna, AS Cerqueira, A Cerri, L Cerrito, F Cerutti, M Cervetto, SA Cetin, F Cevenini, A Chafaq, D Chakraborty, K Chan, JD Chapman, JW Chapman, E Chareyre, DG Charlton, V Chavda, S Cheatham, S Chekanov, SV Chekulaev, GA Chelkov, H Chen, L Chen, S Chen, T Chen, X Chen, S Cheng, A Cheplakov, VF Chepurnov, R Cherkaoui El Moursli, V Tcherniatine, D Chesneanu, E Cheu, SL Cheung, L Chevalier, F Chevallier, V Chiarella, G Chiefari, L Chikovani, JT Childers, A Chilingarov, G Chiodini, MV Chizhov, G Choudalakis, S Chouridou, IA Christidi, A Christov, D Chromek-Burckhart, ML Chu, J Chudoba, G Ciapetti, AK Ciftci, R Ciftci, D Cinca, V Cindro, MD Ciobotaru, C Ciocca, A Ciocio, M Cirilli, M Citterio, A Clark, PJ Clark, W Cleland, JC Clemens, B Clement, C Clement, RW Clifft, Y Coadou, M Cobal, A Coccaro, J Cochran, P Coe, S Coelli, J Coggeshall, E Cogneras, CD Cojocaru, J Colas, B Cole, AP Colijn, C Collard, NJ Collins, C Collins-Tooth, J Collot, G Colon, R Coluccia, G Comune, P Conde Muiño, E Coniavitis, MC Conidi, M Consonni, S Constantinescu, C Conta, F Conventi, J Cook, M Cooke, BD Cooper, AM Cooper-Sarkar, NJ Cooper-Smith, K Copic, T Cornelissen, M Corradi, S Correard, F Corriveau, A Corso-Radu, A Cortes-Gonzalez, G Cortiana, G Costa, MJ Costa, D Costanzo, T Costin, D Côté, R Coura Torres, L Courneyea, G Cowan, C Cowden, BE Cox, K Cranmer, J Cranshaw, M Cristinziani, G Crosetti, R Crupi, S Crépé-Renaudin, C Cuenca Almenar, T Cuhadar Donszelmann, S Cuneo, M Curatolo, CJ Curtis, P Cwetanski, H Czirr, Z Czyczula, S D'Auria, M D'Onofrio, A D'Orazio, A Da Rocha Gesualdi Mello, PVM Da Silva, C Da Via, W Dabrowski, A Dahlhoff, T Dai, C Dallapiccola, SJ Dallison, J Dalmau, CH Daly, M Dam, M Dameri, HO Danielsson, R Dankers, D Dannheim, V Dao, G Darbo, GL Darlea, C Daum, JP Dauvergne, W Davey, T Davidek, N Davidson, R Davidson, M Davies, AR Davison, E Dawe, I Dawson, JW Dawson, RK Daya, K De, R de Asmundis, S De Castro, PE De Castro Faria Salgado, S De Cecco, J de Graat, N De Groot, P de Jong, E De La Cruz-Burelo, C De La Taille, B De Lotto, L De Mora, L De Nooij, M De Oliveira Branco, D De Pedis, P de Saintignon, A De Salvo, U De Sanctis, A De Santo, JB De Vivie De Regie, G De Zorzi, S Dean, G Dedes, DV Dedovich, PO Defay, J Degenhardt, M Dehchar, M Deile, C Del Papa, J Del Peso, T Del Prete, A Dell'acqua, L Dell'asta, M Della Pietra, D Della Volpe, M Delmastro, P Delpierre, N Delruelle, PA Delsart, C Deluca, S Demers, M Demichev, B Demirkoz, J Deng, W Deng, SP Denisov, C Dennis, JE Derkaoui, F Derue, P Dervan, K Desch, PO Deviveiros, A Dewhurst, B Dewilde, S Dhaliwal, R Dhullipudi, A Di Ciaccio, L Di Ciaccio, A Di Domenico, A Di Girolamo, B Di Girolamo, S Di Luise, A Di Mattia, R Di Nardo, A Di Simone, R Di Sipio, MA Diaz, MM Diaz Gomez, F Diblen, EB Diehl, H Dietl, J Dietrich, TA Dietzsch, S Diglio, K Dindar Yagci, J Dingfelder, C Dionisi, P Dita, S Dita, F Dittus, F Djama, R Djilkibaev, T Djobava, MAB do Vale, A Do Valle Wemans, TKO Doan, M Dobbs, R Dobinson, D Dobos, E Dobson, M Dobson, J Dodd, OB Dogan, C Doglioni, T Doherty, Y Doi, J Dolejsi, I Dolenc, Z Dolezal, BA Dolgoshein, T Dohmae, M Donega, J Donini, J Dopke, A Doria, A Dos Anjos, M Dosil, A Dotti, MT Dova, JD Dowell, A Doxiadis, AT Doyle, Z Drasal, J Drees, N Dressnandt, H Drevermann, C Driouichi, M Dris, JG Drohan, J Dubbert, T Dubbs, S Dube, E Duchovni, G Duckeck, A Dudarev, F Dudziak, M Dührssen, IP Duerdoth, L Duflot, M-A Dufour, M Dunford, H Duran Yildiz, A Dushkin, R Duxfield, M Dwuznik, F Dydak, D Dzahini, M Düren, WL Ebenstein, J Ebke, S Eckert, S Eckweiler, K Edmonds, CA Edwards, I Efthymiopoulos, K Egorov, W Ehrenfeld, T Ehrich, T Eifert, G Eigen, K Einsweiler, E Eisenhandler, T Ekelof, M El Kacimi, M Ellert, S Elles, F Ellinghaus, K Ellis, N Ellis, J Elmsheuser, M Elsing, R Ely, D Emeliyanov, R Engelmann, A Engl, B Epp, A Eppig, J Erdmann, A Ereditato, V Eremin, D Eriksson, I Ermoline, J Ernst, M Ernst, J Ernwein, D Errede, S Errede, E Ertel, M Escalier, C Escobar, X Espinal Curull, B Esposito, F Etienne, AI Etienvre, E Etzion, H Evans, VN Evdokimov, L Fabbri, C Fabre, K Facius, RM Fakhrutdinov, S Falciano, AC Falou, Y Fang, M Fanti, A Farbin, A Farilla, J Farley, T Farooque, SM Farrington, P Farthouat, D Fasching, P Fassnacht, D Fassouliotis, B Fatholahzadeh, L Fayard, S Fazio, R Febbraro, P Federic, OL Fedin, I Fedorko, W Fedorko, M Fehling-Kaschek, L Feligioni, CU Felzmann, C Feng, EJ Feng, AB Fenyuk, J Ferencei, D Ferguson, J Ferland, B Fernandes, W Fernando, S Ferrag, J Ferrando, V Ferrara, A Ferrari, P Ferrari, R Ferrari, A Ferrer, ML Ferrer, D Ferrere, C Ferretti, A Ferretto Parodi, F Ferro, M Fiascaris, F Fiedler, A Filipčič, A Filippas, F Filthaut, M Fincke-Keeler, MCN Fiolhais, L Fiorini, A Firan, G Fischer, P Fischer, MJ Fisher, SM Fisher, J Flammer, M Flechl, I Fleck, J Fleckner, P Fleischmann, S Fleischmann, T Flick, LR Flores Castillo, MJ Flowerdew, F Föhlisch, M Fokitis, T Fonseca Martin, J Fopma, DA Forbush, A Formica, A Forti, D Fortin, JM Foster, D Fournier, A Foussat, AJ Fowler, K Fowler, H Fox, P Francavilla, S Franchino, D Francis, M Franklin, S Franz, M Fraternali, S Fratina, J Freestone, ST French, R Froeschl, D Froidevaux, JA Frost, C Fukunaga, E Fullana Torregrosa, J Fuster, C Gabaldon, O Gabizon, T Gadfort, S Gadomski, G Gagliardi, P Gagnon, C Galea, EJ Gallas, MV Gallas, V Gallo, BJ Gallop, P Gallus, E Galyaev, KK Gan, YS Gao, VA Gapienko, A Gaponenko, M Garcia-Sciveres, C García, JE García Navarro, RW Gardner, N Garelli, H Garitaonandia, V Garonne, J Garvey, C Gatti, G Gaudio, O Gaumer, V Gautard, P Gauzzi, IL Gavrilenko, C Gay, G Gaycken, J-C Gayde, EN Gazis, P Ge, CNP Gee, Ch Geich-Gimbel, K Gellerstedt, C Gemme, MH Genest, S Gentile, F Georgatos, S George, P Gerlach, A Gershon, C Geweniger, H Ghazlane, P Ghez, N Ghodbane, B Giacobbe, S Giagu, V Giakoumopoulou, V Giangiobbe, F Gianotti, B Gibbard, A Gibson, SM Gibson, GF Gieraltowski, LM Gilbert, M Gilchriese, O Gildemeister, V Gilewsky, D Gillberg, AR Gillman, DM Gingrich, J Ginzburg, N Giokaris, MP Giordani, R Giordano, FM Giorgi, P Giovannini, PF Giraud, P Girtler, D Giugni, P Giusti, BK Gjelsten, LK Gladilin, C Glasman, J Glatzer, A Glazov, KW Glitza, GL Glonti, KG Gnanvo, J Godfrey, J Godlewski, M Goebel, T Göpfert, C Goeringer, C Gössling, T Göttfert, V Goggi, S Goldfarb, D Goldin, T Golling, NP Gollub, SN Golovnia, A Gomes, LS Gomez Fajardo, R Gonçalo, L Gonella, C Gong, A Gonidec, S Gonzalez, S González de la Hoz, ML Gonzalez Silva, B Gonzalez-Pineiro, S Gonzalez-Sevilla, JJ Goodson, L Goossens, PA Gorbounov, HA Gordon, I Gorelov, G Gorfine, B Gorini, E Gorini, A Gorišek, E Gornicki, SA Gorokhov, BT Gorski, VN Goryachev, B Gosdzik, M Gosselink, MI Gostkin, M Gouanère, I Gough Eschrich, M Gouighri, D Goujdami, MP Goulette, AG Goussiou, C Goy, I Grabowska-Bold, V Grabski, P Grafström, C Grah, K-J Grahn, F Grancagnolo, S Grancagnolo, V Grassi, V Gratchev, N Grau, HM Gray, JA Gray, E Graziani, OG Grebenyuk, B Green, D Greenfield, T Greenshaw, ZD Greenwood, IM Gregor, P Grenier, A Grewal, E Griesmayer, J Griffiths, N Grigalashvili, AA Grillo, K Grimm, S Grinstein, PLY Gris, YV Grishkevich, J-F Grivaz, LS Groer, J Grognuz, M Groh, M Groll, E Gross, J Grosse-Knetter, J Groth-Jensen, M Gruwe, K Grybel, VJ Guarino, C Guicheney, A Guida, T Guillemin, H Guler, J Gunther, B Guo, A Gupta, Y Gusakov, VN Gushchin, A Gutierrez, P Gutierrez, N Guttman, O Gutzwiller, C Guyot, C Gwenlan, CB Gwilliam, A Haas, S Haas, C Haber, G Haboubi, R Hackenburg, HK Hadavand, DR Hadley, C Haeberli, P Haefner, R Härtel, F Hahn, S Haider, Z Hajduk, H Hakobyan, J Haller, GD Hallewell, K Hamacher, A Hamilton, S Hamilton, H Han, L Han, K Hanagaki, M Hance, C Handel, P Hanke, CJ Hansen, JR Hansen, JB Hansen, JD Hansen, PH Hansen, T Hansl-Kozanecka, P Hansson, K Hara, GA Hare, T Harenberg, R Harper, RD Harrington, OM Harris, K Harrison, JC Hart, J Hartert, F Hartjes, T Haruyama, A Harvey, S Hasegawa, Y Hasegawa, K Hashemi, S Hassani, M Hatch, D Hauff, S Haug, M Hauschild, R Hauser, M Havranek, BM Hawes, CM Hawkes, RJ Hawkings, D Hawkins, T Hayakawa, HS Hayward, SJ Haywood, E Hazen, M He, SJ Head, V Hedberg, L Heelan, S Heim, B Heinemann, FEW Heinemann, S Heisterkamp, L Helary, M Heldmann, M Heller, S Hellman, C Helsens, T Hemperek, RCW Henderson, PJ Hendriks, M Henke, A Henrichs, AM Henriques Correia, S Henrot-Versille, F Henry-Couannier, C Hensel, T Henss, Y Hernández Jiménez, AD Hershenhorn, G Herten, R Hertenberger, L Hervas, NP Hessey, A Hidvegi, E Higón-Rodriguez, D Hill, JC Hill, N Hill, KH Hiller, S Hillert, SJ Hillier, I Hinchliffe, D Hindson, E Hines, M Hirose, F Hirsch, D Hirschbuehl, J Hobbs, N Hod, MC Hodgkinson, P Hodgson, A Hoecker, MR Hoeferkamp, J Hoffman, D Hoffmann, M Hohlfeld, M Holder, TI Hollins, G Hollyman, A Holmes, SO Holmgren, T Holy, JL Holzbauer, RJ Homer, Y Homma, T Horazdovsky, C Horn, S Horner, S Horvat, J-Y Hostachy, T Hott, S Hou, MA Houlden, A Hoummada, DF Howell, J Hrivnac, I Hruska, T Hryn'ova, PJ Hsu, S-C Hsu, GS Huang, Z Hubacek, F Hubaut, F Huegging, TB Huffman, EW Hughes, G Hughes, RE Hughes-Jones, M Huhtinen, P Hurst, M Hurwitz, U Husemann, N Huseynov, J Huston, J Huth, G Iacobucci, G Iakovidis, M Ibbotson, I Ibragimov, R Ichimiya, L Iconomidou-Fayard, J Idarraga, M Idzik, P Iengo, O Igonkina, Y Ikegami, M Ikeno, Y Ilchenko, D Iliadis, D Imbault, M Imhaeuser, M Imori, T Ince, J Inigo-Golfin, P Ioannou, M Iodice, G Ionescu, A Irles Quiles, K Ishii, A Ishikawa, M Ishino, R Ishmukhametov, T Isobe, V Issakov, C Issever, S Istin, Y Itoh, AV Ivashin, W Iwanski, H Iwasaki, JM Izen, V Izzo, B Jackson, JN Jackson, P Jackson, MR Jaekel, M Jahoda, V Jain, K Jakobs, S Jakobsen, J Jakubek, DK Jana, E Jankowski, E Jansen, A Jantsch, M Janus, RC Jared, G Jarlskog, L Jeanty, K Jelen, I Jen-La 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Abstract:

A search for new heavy particles manifested as resonances in two-jet final states is presented. The data were produced in 7 TeV proton-proton collisions by the LHC and correspond to an integrated luminosity of 315  nb⁻¹ collected by the ATLAS detector. No resonances were observed. Upper limits were set on the product of cross section and signal acceptance for excited-quark (q*) production as a function of q* mass. These exclude at the 95% C.L. the q* mass interval 0.30