The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at z similar to 1.4

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 68:3 (2016) ARTN 38

Authors:

T Okumura, C Hikage, T Totani, M Tonegawa, H Okada, K Glazebrook, C Blake, PG Ferreira, S More, A Taruya, S Tsujikawa, M Akiyama, G Dalton, T Goto, T Ishikawa, F Iwamuro, T Matsubara, T Nishimichi, K Ohta, I Shimizu, R Takahashi, N Takato, N Tamura, K Yabe, N Yoshida

The galaxy–halo connection in the VIDEO survey at 0.5 < z < 1.7

Monthly Notices of the Royal Astronomical Society Oxford University Press 459:3 (2016) 2618-2631

Authors:

PETER Hatfield, Lindsay, Matthew Jarvis, B Häußler, M Vaccari, Aprajita Verma

Abstract:

We present a series of results from a clustering analysis of the first data release of the Visible and Infrared Survey Telescope for Astronomy (VISTA) Deep Extragalactic Observations (VIDEO) survey. VIDEO is the only survey currently capable of probing the bulk of stellar mass in galaxies at redshifts corresponding to the peak of star formation on degree scales. Galaxy clustering is measured with the two-point correlation function, which is calculated using a non-parametric kernel-based density estimator. We use our measurements to investigate the connection between the galaxies and the host dark matter halo using a halo occupation distribution methodology, deriving bias, satellite fractions, and typical host halo masses for stellar masses between 10 9.35 and 10 10.85 M ⊙ , at redshifts 0.5 < z < 1.7. Our results show typical halo mass increasing with stellar mass (with moderate scatter) and bias increasing with stellar mass and redshift consistent with previous studies. We find that the satellite fraction increased towards low redshifts, from ~5 per cent at z ~ 1.5 to ~20 per cent at z ~ 0.6. We combine our results to derive the stellar mass-to-halo mass ratio for both satellites and centrals over a range of halo masses and find the peak corresponding to the halo mass with maximum star formation efficiency to be ~2 × 10 12 M ⊙ , finding no evidence for evolution.

Simulated stellar kinematics studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph

Monthly Notices of the Royal Astronomical Society Oxford University Press 458:3 (2016) 2405-2422

Authors:

S Kendrew, S Zieleniewski, RCW Houghton, Niranjan Thatte, J Devriendt, M Tecza, F Clarke, K O'Brien, B Häussler

Abstract:

We present a study into the capabilities of integrated and spatially resolved integral field spectroscopy of galaxies at z = 2–4 with the future HARMONI spectrograph for the European Extremely Large Telescope (E-ELT) using the simulation pipeline, HSIM. We focus particularly on the instrument's capabilities in stellar absorption line integral field spectroscopy, which will allow us to study the stellar kinematics and stellar population characteristics. Such measurements for star-forming and passive galaxies around the peak star formation era will provide a critical insight into the star formation, quenching and mass assembly history of high-z, and thus present-day galaxies. First, we perform a signal-to-noise study for passive galaxies at a range of stellar masses for z = 2–4, assuming different light profiles; for this population, we estimate that integrated stellar absorption line spectroscopy with HARMONI will be limited to galaxies with M* ≳ 1010.7 M⊙. Secondly, we use HSIM to perform a mock observation of a typical star-forming 1010 M⊙ galaxy at z = 3 generated from the high-resolution cosmological simulation NUTFB. We demonstrate that the input stellar kinematics of the simulated galaxy can be accurately recovered from the integrated spectrum in a 15-h observation, using common analysis tools. Whilst spatially resolved spectroscopy is likely to remain out of reach for this particular galaxy, we estimate HARMONI's performance limits in this regime from our findings. This study demonstrates how instrument simulators such as HSIM can be used to quantify instrument performance and study observational biases on kinematics retrieval; and shows the potential of making observational predictions from cosmological simulation output data.

Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at sNN=2.76 TeV measured with the ATLAS detector

Physical Review C American Physical Society (APS) 93:3 (2016) 034914

Authors:

G Aad, B Abbott, J Abdallah, S Abdel Khalek, O Abdinov, R Aben, B Abi, M Abolins, OS AbouZeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, BS Acharya, L Adamczyk, DL Adams, J Adelman, S Adomeit, T Adye, T Agatonovic-Jovin, JA Aguilar-Saavedra, M Agustoni, SP Ahlen, F Ahmadov, G Aielli, H Akerstedt, TPA Åkesson, G Akimoto, AV Akimov, GL Alberghi, J Albert, S Albrand, MJ Alconada Verzini, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, G Alimonti, L Alio, J Alison, BMM Allbrooke, LJ Allison, PP Allport, J Almond, A Aloisio, A Alonso, F Alonso, C Alpigiani, A Altheimer, B Alvarez Gonzalez, MG Alviggi, K Amako, Y Amaral Coutinho, C Amelung, D Amidei, SP Amor Dos Santos, A Amorim, S Amoroso, N Amram, G Amundsen, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, XS Anduaga, S Angelidakis, I Angelozzi, P Anger, A Angerami, F Anghinolfi, AV Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, M Aoki, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, JP Araque, ATH Arce, J-F Arguin, S Argyropoulos, M Arik, AJ Armbruster, O Arnaez, V Arnal, H Arnold, M Arratia, O Arslan, A Artamonov, G Artoni, S Asai, N Asbah, A Ashkenazi, B Åsman, L Asquith, K Assamagan, R Astalos, M Atkinson, NB Atlay, B Auerbach, K Augsten, M Aurousseau, G Avolio, G Azuelos, Y Azuma, MA Baak, AE Baas, C Bacci, H Bachacou, K Bachas, M Backes, M Backhaus, J Backus Mayes, E Badescu, P Bagiacchi, P Bagnaia, Y Bai, T Bain, JT Baines, OK Baker, P Balek, F Balli, E Banas, Sw Banerjee, AAE Bannoura, V Bansal, HS Bansil, L Barak, EL Barberio, D Barberis, M Barbero, T Barillari, M Barisonzi, T Barklow, N Barlow, BM Barnett, RM Barnett, Z Barnovska, A Baroncelli, G Barone, AJ Barr, F Barreiro, J Barreiro Guimarães da Costa, R Bartoldus, AE Barton, P Bartos, V Bartsch, A Bassalat, A Basye, RL Bates, JR Batley, M Battaglia, M Battistin, F Bauer, HS Bawa, MD Beattie, T Beau, PH Beauchemin, R Beccherle, P Bechtle, HP Beck, K Becker, S Becker, M Beckingham, C Becot, AJ Beddall, A Beddall, S Bedikian, VA Bednyakov, CP Bee, LJ Beemster, TA Beermann, M Begel, JK Behr, C Belanger-Champagne, PJ Bell, WH Bell, G Bella, L Bellagamba, A Bellerive, M Bellomo, K Belotskiy, O Beltramello, O Benary, D Benchekroun, K Bendtz, N Benekos, Y Benhammou, E Benhar Noccioli, JA Benitez Garcia, DP Benjamin, JR Bensinger, K Benslama, S Bentvelsen, D Berge, E Bergeaas Kuutmann, N Berger, F Berghaus, J Beringer, C Bernard, P Bernat, C Bernius, FU Bernlochner, T Berry, P Berta, C Bertella, G Bertoli, F Bertolucci, C Bertsche, D Bertsche, MI Besana, GJ Besjes, O Bessidskaia Bylund, M Bessner, N Besson, C Betancourt, S Bethke, W Bhimji, RM Bianchi, L Bianchini, M Bianco, O Biebel, SP Bieniek, K Bierwagen, J Biesiada, M Biglietti, J Bilbao De Mendizabal, H Bilokon, M Bindi, S Binet, A Bingul, C Bini, CW Black, JE Black, KM Black, D Blackburn, RE Blair, J-B Blanchard, T Blazek, I Bloch, C Blocker, W Blum, U Blumenschein, GJ Bobbink, VS Bobrovnikov, SS Bocchetta, A Bocci, C Bock, CR Boddy, M Boehler, TT Boek, JA Bogaerts, AG Bogdanchikov, A Bogouch, C Bohm, J Bohm, V Boisvert, T Bold, V Boldea, AS Boldyrev, M Bomben, M Bona, M Boonekamp, A Borisov, G Borissov, M Borri, S Borroni, J Bortfeldt, V Bortolotto, K Bos, D Boscherini, M Bosman, H Boterenbrood, J Boudreau, J Bouffard, EV Bouhova-Thacker, D Boumediene, C Bourdarios, N Bousson, S Boutouil, A Boveia, J Boyd, IR Boyko, J Bracinik, A Brandt, G Brandt, O Brandt, U Bratzler, B Brau, JE Brau, HM Braun, SF Brazzale, B Brelier, K Brendlinger, AJ Brennan, R Brenner, S Bressler, K Bristow, TM Bristow, D Britton, FM Brochu, I Brock, R Brock, C Bromberg, J Bronner, G Brooijmans, T Brooks, WK Brooks, J Brosamer, E Brost, J Brown, PA Bruckman de Renstrom, D Bruncko, R Bruneliere, S Brunet, A Bruni, G Bruni, M Bruschi, L Bryngemark, T Buanes, Q Buat, F Bucci, P Buchholz, RM Buckingham, AG Buckley, SI Buda, IA Budagov, F Buehrer, L Bugge, MK Bugge, O Bulekov, AC Bundock, H Burckhart, S Burdin, B Burghgrave, S Burke, I Burmeister, E Busato, D Büscher, V Büscher, P Bussey, CP Buszello, B Butler, JM Butler, AI Butt, CM Buttar, JM Butterworth, P Butti, W Buttinger, A Buzatu, M Byszewski, S Cabrera Urbán, D Caforio, O Cakir, P Calafiura, A Calandri, G Calderini, P Calfayan, R Calkins, LP Caloba, D Calvet, S Calvet, R Camacho Toro, S Camarda, D Cameron, LM Caminada, R Caminal Armadans, S Campana, M Campanelli, A Campoverde, V Canale, A Canepa, M Cano Bret, J Cantero, R Cantrill, T Cao, MDM Capeans Garrido, I Caprini, M Caprini, M Capua, R Caputo, R Cardarelli, T Carli, G Carlino, L Carminati, S Caron, E Carquin, GD Carrillo-Montoya, JR Carter, J Carvalho, D Casadei, MP Casado, M Casolino, E Castaneda-Miranda, A Castelli, V Castillo Gimenez, NF Castro, P Catastini, A Catinaccio, JR Catmore, A Cattai, G Cattani, J Caudron, S Caughron, V Cavaliere, D Cavalli, M Cavalli-Sforza, V Cavasinni, F Ceradini, BC Cerio, K Cerny, AS Cerqueira, A Cerri, L Cerrito, F Cerutti, M Cerv, A Cervelli, SA Cetin, A Chafaq, D Chakraborty, I Chalupkova, P Chang, B Chapleau, JD Chapman, D Charfeddine, DG Charlton, CC Chau, CA Chavez Barajas, S Cheatham, A Chegwidden, S Chekanov, SV Chekulaev, GA Chelkov, MA Chelstowska, C Chen, H Chen, K Chen, L Chen, S Chen, X Chen, Y Chen, Y Chen, HC Cheng, Y Cheng, A Cheplakov, R Cherkaoui El Moursli, V Chernyatin, E Cheu, L Chevalier, V Chiarella, G Chiefari, JT Childers, A Chilingarov, G Chiodini, AS Chisholm, RT Chislett, A Chitan, MV Chizhov, S Chouridou, BKB Chow, D Chromek-Burckhart, ML Chu, J Chudoba, JJ Chwastowski, L Chytka, G Ciapetti, AK Ciftci, R Ciftci, D Cinca, V Cindro, A Ciocio, P Cirkovic, ZH Citron, M Ciubancan, A Clark, PJ Clark, RN Clarke, W Cleland, JC Clemens, C Clement, Y Coadou, M Cobal, A Coccaro, J Cochran, L Coffey, JG Cogan, J Coggeshall, B Cole, S Cole, AP Colijn, J Collot, T Colombo, G Colon, G Compostella, P Conde Muiño, E Coniavitis, MC Conidi, SH Connell, IA Connelly, SM Consonni, V Consorti, S Constantinescu, C Conta, G Conti, F Conventi, M Cooke, BD Cooper, AM Cooper-Sarkar, NJ Cooper-Smith, K Copic, T Cornelissen, M Corradi, F Corriveau, A Corso-Radu, A Cortes-Gonzalez, G Cortiana, G Costa, MJ Costa, D Costanzo, D Côté, G Cottin, G Cowan, BE Cox, K Cranmer, G Cree, S Crépé-Renaudin, F Crescioli, WA Cribbs, M Crispin Ortuzar, M Cristinziani, V Croft, G Crosetti, C-M Cuciuc, T Cuhadar Donszelmann, J Cummings, M Curatolo, C Cuthbert, H Czirr, P Czodrowski, Z Czyczula, S D'Auria, M D'Onofrio, MJ Da Cunha Sargedas De Sousa, C Da Via, W Dabrowski, A Dafinca, T Dai, O Dale, F Dallaire, C Dallapiccola, M Dam, AC Daniells, M Dano Hoffmann, V Dao, G Darbo, S Darmora, J Dassoulas, A Dattagupta, W Davey, C David, T Davidek, E Davies, M Davies, O Davignon, AR Davison, P Davison, Y Davygora, E Dawe, I Dawson, RK Daya-Ishmukhametova, K De, R de Asmundis, S De Castro, S De Cecco, N De Groot, P de Jong, H De la Torre, F De Lorenzi, L De Nooij, D De Pedis, A De Salvo, U De Sanctis, A De Santo, JB De Vivie De Regie, WJ Dearnaley, R Debbe, C Debenedetti, B Dechenaux, DV Dedovich, I Deigaard, J Del Peso, T Del Prete, F Deliot, CM Delitzsch, M Deliyergiyev, A Dell'Acqua, L Dell'Asta, M Dell'Orso, M Della Pietra, D della Volpe, M Delmastro, PA Delsart, C Deluca, S Demers, M Demichev, A Demilly, SP Denisov, D Derendarz, JE Derkaoui, F Derue, P Dervan, K Desch, C Deterre, PO Deviveiros, A Dewhurst, S Dhaliwal, A Di Ciaccio, L Di Ciaccio, A Di Domenico, C Di Donato, A Di Girolamo, B Di Girolamo, A Di Mattia, B Di Micco, R Di Nardo, A Di Simone, R Di Sipio, D Di Valentino, FA Dias, MA Diaz, EB Diehl, J Dietrich, TA Dietzsch, S Diglio, A Dimitrievska, J Dingfelder, C Dionisi, P Dita, S Dita, F Dittus, F Djama, T Djobava, JI Djuvsland, MAB do Vale, A Do Valle Wemans, TKO Doan, D Dobos, C Doglioni, T Doherty, T Dohmae, J Dolejsi, Z Dolezal, BA Dolgoshein, M Donadelli, S Donati, P Dondero, J Donini, J Dopke, A Doria, MT Dova, AT Doyle, M Dris, J Dubbert, S Dube, E Dubreuil, E Duchovni, G Duckeck, OA Ducu, D Duda, A Dudarev, F Dudziak, L Duflot, L Duguid, M Dührssen, M Dunford, H Duran Yildiz, M Düren, A Durglishvili, M Dwuznik, M Dyndal, J Ebke, W Edson, NC Edwards, W Ehrenfeld, T Eifert, G Eigen, K Einsweiler, T Ekelof, M El Kacimi, M Ellert, S Elles, F Ellinghaus, N Ellis, J Elmsheuser, M Elsing, D Emeliyanov, Y Enari, OC Endner, M Endo, J Erdmann, A Ereditato, D Eriksson, G Ernis, J Ernst, M Ernst, J Ernwein, D Errede, S Errede, E Ertel, M Escalier, H Esch, C Escobar, B Esposito, AI Etienvre, E Etzion, H Evans, A Ezhilov, L Fabbri, G Facini, RM Fakhrutdinov, S Falciano, RJ Falla, J Faltova, Y Fang, M Fanti, A Farbin, A Farilla, T Farooque, S Farrell, SM Farrington, P Farthouat, F Fassi, P Fassnacht, D Fassouliotis, A Favareto, L Fayard, P Federic, OL Fedin, W Fedorko, M Fehling-Kaschek, S Feigl, L Feligioni, C Feng, EJ Feng, H Feng, AB Fenyuk, S Fernandez Perez, S Ferrag, J Ferrando, A Ferrari, P Ferrari, R Ferrari, DE Ferreira de Lima, A Ferrer, D Ferrere, C Ferretti, A Ferretto Parodi, M Fiascaris, F Fiedler, A Filipčič, M Filipuzzi, F Filthaut, M Fincke-Keeler, KD Finelli, MCN Fiolhais, L Fiorini, A Firan, A Fischer, J Fischer, WC Fisher, EA Fitzgerald, M Flechl, I Fleck, P Fleischmann, S Fleischmann, GT Fletcher, G Fletcher, T Flick, A Floderus, LR Flores Castillo, AC Florez Bustos, MJ Flowerdew, A Formica, A Forti, D Fortin, D Fournier, H Fox, S Fracchia, P Francavilla, M Franchini, S Franchino, D Francis, L Franconi, M Franklin, S Franz, M Fraternali, ST French, C Friedrich, F Friedrich, D Froidevaux, JA Frost, C Fukunaga, E Fullana Torregrosa, BG Fulsom, J Fuster, C Gabaldon, O Gabizon, A Gabrielli, A Gabrielli, S Gadatsch, S Gadomski, G Gagliardi, P Gagnon, C Galea, B Galhardo, EJ Gallas, V Gallo, BJ Gallop, P Gallus, G Galster, KK Gan, RP Gandrajula, J Gao, YS Gao, FM Garay Walls, F Garberson, C García, JE García Navarro, M Garcia-Sciveres, RW Gardner, N Garelli, V Garonne, C Gatti, G Gaudio, B Gaur, L Gauthier, P Gauzzi, IL Gavrilenko, C Gay, G Gaycken, EN Gazis, P Ge, Z Gecse, CNP Gee, DAA Geerts, Ch Geich-Gimbel, C Gemme, A Gemmell, MH Genest, S Gentile, M George, S George, D Gerbaudo, A Gershon, H Ghazlane, N Ghodbane, B Giacobbe, S Giagu, V Giangiobbe, P Giannetti, F Gianotti, B Gibbard, SM Gibson, M Gilchriese, TPS Gillam, D Gillberg, G Gilles, DM Gingrich, N Giokaris, MP Giordani, R Giordano, FM Giorgi, FM Giorgi, PF Giraud, D Giugni, C Giuliani, M Giulini, BK Gjelsten, S Gkaitatzis, I Gkialas, LK Gladilin, C Glasman, J Glatzer, PCF Glaysher, A Glazov, GL Glonti, M Goblirsch-Kolb, JR Goddard, J Godfrey, J Godlewski, C Goeringer, S Goldfarb, T Golling, D Golubkov, A Gomes, LS Gomez Fajardo, R Gonçalo, J Goncalves Pinto Firmino Da Costa, L Gonella, S González de la Hoz, G Gonzalez Parra, S Gonzalez-Sevilla, L Goossens, PA Gorbounov, HA Gordon, I Gorelov, B Gorini, E Gorini, A Gorišek, E Gornicki, AT Goshaw, C Gössling, MI Gostkin, M Gouighri, D Goujdami, MP Goulette, AG Goussiou, C Goy, S Gozpinar, HMX Grabas, L Graber, I Grabowska-Bold, P Grafström, K-J Grahn, J Gramling, E Gramstad, S Grancagnolo, V Grassi, V Gratchev, HM Gray, E Graziani, OG Grebenyuk, ZD Greenwood, K Gregersen, IM Gregor, P Grenier, J Griffiths, AA Grillo, K Grimm, S Grinstein, Ph Gris, YV Grishkevich, J-F Grivaz, JP Grohs, A Grohsjean, E Gross, J Grosse-Knetter, GC Grossi, J Groth-Jensen, ZJ Grout, L Guan, J Guenther, F Guescini, D Guest, O Gueta, C Guicheney, E Guido, T Guillemin, S Guindon, U Gul, C Gumpert, J Guo, S Gupta, P Gutierrez, NG Gutierrez Ortiz, C Gutschow, N Guttman, C Guyot, C Gwenlan, CB Gwilliam, A Haas, C Haber, HK Hadavand, N Haddad, P Haefner, S Hageböck, Z Hajduk, H Hakobyan, M Haleem, D Hall, G Halladjian, K Hamacher, P Hamal, K Hamano, M Hamer, A Hamilton, S Hamilton, GN Hamity, PG Hamnett, L Han, K Hanagaki, K Hanawa, M Hance, P Hanke, R Hanna, JB Hansen, JD Hansen, PH Hansen, K Hara, AS Hard, T Harenberg, F Hariri, S Harkusha, D Harper, RD Harrington, OM Harris, PF Harrison, F Hartjes, M Hasegawa, S Hasegawa, Y Hasegawa, A Hasib, S Hassani, S Haug, M Hauschild, R Hauser, M Havranek, CM Hawkes, RJ Hawkings, AD Hawkins, T Hayashi, D Hayden, CP Hays, HS Hayward, SJ Haywood, SJ Head, T Heck, V Hedberg, L Heelan, S Heim, T Heim, B Heinemann, L Heinrich, J Hejbal, L Helary, C Heller, M Heller, S Hellman, D Hellmich, C Helsens, J Henderson, RCW Henderson, Y Heng, C Hengler, A Henrichs, AM Henriques Correia, S Henrot-Versille, C Hensel, GH Herbert, Y Hernández Jiménez, R Herrberg-Schubert, G Herten, R Hertenberger, L Hervas, GG Hesketh, NP Hessey, R Hickling, E Higón-Rodriguez, E Hill, JC Hill, KH Hiller, S Hillert, SJ Hillier, I Hinchliffe, E Hines, M Hirose, D Hirschbuehl, J Hobbs, N Hod, MC Hodgkinson, P Hodgson, A Hoecker, MR Hoeferkamp, F Hoenig, J Hoffman, D Hoffmann, M Hohlfeld, TR Holmes, TM Hong, L Hooft van Huysduynen, J-Y Hostachy, S Hou, A Hoummada, J Howard, J Howarth, M Hrabovsky, I Hristova, J Hrivnac, T Hryn'ova, C Hsu, PJ Hsu, S-C Hsu, D Hu, X Hu, Y Huang, Z Hubacek, F Hubaut, F Huegging, TB Huffman, EW Hughes, G Hughes, M Huhtinen, TA Hülsing, M Hurwitz, N Huseynov, J Huston, J Huth, G Iacobucci, G Iakovidis, I Ibragimov, L Iconomidou-Fayard, E Ideal, P Iengo, O Igonkina, T Iizawa, Y Ikegami, K Ikematsu, M Ikeno, Y Ilchenko, D Iliadis, N Ilic, Y Inamaru, T Ince, P Ioannou, M Iodice, K Iordanidou, V Ippolito, A Irles Quiles, C Isaksson, M Ishino, M Ishitsuka, R Ishmukhametov, C Issever, S Istin, JM Iturbe Ponce, R Iuppa, J Ivarsson, W Iwanski, H Iwasaki, JM Izen, V Izzo, B Jackson, M Jackson, P Jackson, MR Jaekel, V Jain, K Jakobs, S Jakobsen, T Jakoubek, J Jakubek, DO Jamin, DK Jana, E Jansen, H Jansen, J Janssen, M Janus, G Jarlskog, N Javadov, T Javůrek, L Jeanty, J Jejelava, G-Y Jeng, D Jennens, P Jenni, J Jentzsch, C Jeske, S Jézéquel, H Ji, J Jia, Y Jiang, M Jimenez Belenguer, S Jin, A Jinaru, O Jinnouchi, MD Joergensen, KE Johansson, P Johansson, KA Johns, K Jon-And, G Jones, RWL Jones, TJ Jones, J Jongmanns, PM Jorge, KD Joshi, J Jovicevic, X Ju, CA Jung, RM Jungst, P Jussel, A Juste Rozas, M Kaci, A Kaczmarska, M Kado, H Kagan, M Kagan, E Kajomovitz, CW Kalderon, S Kama, A Kamenshchikov, N Kanaya, M Kaneda, S Kaneti, VA Kantserov, J Kanzaki, B Kaplan, A Kapliy, D Kar, K Karakostas, N Karastathis, M Karnevskiy, SN Karpov, ZM Karpova, K Karthik, V Kartvelishvili, AN Karyukhin, L Kashif, G Kasieczka, RD Kass, A Kastanas, Y Kataoka, A Katre, J Katzy, V Kaushik, K Kawagoe, T Kawamoto, G Kawamura, S Kazama, VF Kazanin, MY Kazarinov, R Keeler, R Kehoe, JS Keller, JJ Kempster, H Keoshkerian, O Kepka, BP Kerševan, S Kersten, K Kessoku, J Keung, F Khalil-zada, H Khandanyan, A Khanov, A Khodinov, A Khomich, TJ Khoo, G Khoriauli, A Khoroshilov, V Khovanskiy, E Khramov, J Khubua, HY Kim, H Kim, SH Kim, N Kimura, OM Kind, BT King, M King, RSB King, SB King, J Kirk, AE Kiryunin, T Kishimoto, D Kisielewska, F Kiss, T Kittelmann, K Kiuchi, E Kladiva, M Klein, U Klein, K Kleinknecht, 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Properties of Interstellar Medium in Star-Forming Galaxies at z~1.4 revealed with ALMA

Astrophysical Journal IOP Publishing 819:1 (2016) 82-82

Authors:

A Seko, K Ohta, K Yabe, B Hatsukade, M Akiyama, F Iwamuro, N Tamura, Gavin Dalton

Abstract:

We conducted observations of 12CO(J = 5-4) and dust thermal continuum emission toward 20 star-forming galaxies on the main sequence at z ∼ 1.4 using ALMA to investigate the properties of the interstellar medium. The sample galaxies are chosen to trace the distributions of star-forming galaxies in diagrams of stellar mass versus star formation rate and stellar mass versus metallicity. We detected CO emission lines from 11 galaxies. The molecular gas mass is derived by adopting a metallicity-dependent CO-to-H2 conversion factor and assuming a CO(5-4)/CO(1-0) luminosity ratio of 0.23. Masses of molecular gas and its fractions (molecular gas mass/(molecular gas mass + stellar mass)) for the detected galaxies are in the ranges of (3.9-12) × 1010 Mo and 0.25-0.94, respectively; these values are significantly larger than those in local spiral galaxies. The molecular gas mass fraction decreases with increasing stellar mass; the relation holds for four times lower stellar mass than that covered in previous studies, and the molecular gas mass fraction decreases with increasing metallicity. Stacking analyses also show the same trends. Dust thermal emissions were clearly detected from two galaxies and marginally detected from five galaxies. Dust masses of the detected galaxies are (3.9-38) × 107 Mo. We derived gas-to-dust ratios and found they are 3-4 times larger than those in local galaxies. The depletion times of molecular gas for the detected galaxies are (1.4-36) × 108 yr while the results of the stacking analysis show ∼3 × 108 yr. The depletion time tends to decrease with increasing stellar mass and metallicity though the trend is not so significant, which contrasts with the trends in local galaxies.