Zobrazeno 1 - 10
of 946
pro vyhledávání: '"YORK, D. A."'
Autor:
Hamanowicz, A., Peroux, C., Zwaan, M. A., Rahmani, H., Pettini, M., York, D. G., Klitsch, A., Augustin, R., Krogager, J-K., Kulkarni, V., Fresco, A., Biggs, A. D., Milliard, B., Vernet, J.
We present results of the MUSE-ALMA Halos, an ongoing study of the Circum-Galactic Medium (CGM) of low redshift galaxies (z < 1.4), currently comprising 14 strong HI absorbers in five quasar fields. We detect 43 galaxies associated with absorbers dow
Externí odkaz:
http://arxiv.org/abs/1912.08699
Autor:
Bowen, D. V., Chelouche, D., Jenkins, E. B., Tripp, T. M., Pettini, M., York, D. G., Frye, B. L.
We present Hubble Space Telescope far-UV spectra of 4 QSOs whose sightlines pass through the halo of NGC 1097 at impact parameters of 48 -165 kpc. NGC 1097 is a nearby spiral galaxy that has undergone at least two minor merger events, but no apparent
Externí odkaz:
http://arxiv.org/abs/1605.04907
Aims. We have searched for temporal variations of narrow absorption lines in high resolution quasar spectra. A sample of 5 distant sources have been assembled, for which 2 spectra - VLT/UVES or Keck/HIRES - taken several years apart are available. Me
Externí odkaz:
http://arxiv.org/abs/1506.02959
Autor:
Zheng, W., Syphers, D., Meiksin, A., Kriss, G. A., Schneider, D. P., York, D. G., Anderson, S. F.
The proximity profile in the spectra of z~3 quasars, where fluxes extend blueward of the He II Lya wavelength 304 (1+z) A, is one of the most important spectral features in the study of the intergalactic medium. Based on the HST spectra of 24 He II q
Externí odkaz:
http://arxiv.org/abs/1503.06741
Autor:
Noterdaeme, P., Petitjean, P., Paris, I., Cai, Z., Finley, H., Ge, J., Pieri, M. M., York, D. G.
We present a study of ~100 high redshift (z~2-4) extremely strong damped Lyman-alpha systems (ESDLA, with N(HI)>0.5x10^22 cm^-2) detected in quasar spectra from the Baryon Oscillation Spectroscopic Survey SDSS-III DR11. We study the neutral hydrogen,
Externí odkaz:
http://arxiv.org/abs/1403.4115
We report the detection of interstellar silicate dust in the z_abs=0.685 absorber along the sightline toward the gravitationally lensed blazar TXS 0218+357. Using Spitzer Space Telescope Infrared Spectrograph data we detect the 10 micron silicate abs
Externí odkaz:
http://arxiv.org/abs/1402.4509
Autor:
Hall, Patrick B., Brandt, W. N., Petitjean, P., Paris, I., Ak, N. Filiz, Shen, Yue, Gibson, R. R., Aubourg, E., Anderson, S. F., Schneider, D. P., Bizyaev, D., Brinkmann, J., Malanushenko, E., Malanushenko, V., Myers, A. D., Oravetz, D. J., Ross, N. P., Shelden, A., Simmons, A. E., Streblyanska, A., Weaver, B. A., York, D. G.
Publikováno v:
MNRAS, 434, 222-256 (2013)
We report the discovery in the Sloan Digital Sky Survey and the SDSS-III Baryon Oscillation Spectroscopic Survey of seventeen broad absorption line (BAL) quasars with high-ionization troughs that include absorption redshifted relative to the quasar r
Externí odkaz:
http://arxiv.org/abs/1306.2680
Autor:
Noterdaeme, P., Petitjean, P., Carithers, W. C., Pâris, I., Font-Ribera, A., Bailey, S., Aubourg, E., Bizyaev, D., Ebelke, G., Finley, H., Ge, J., Malanushenko, E., Malanushenko, V., Miralda-Escudé, J., Myers, A. D., Oravetz, D., Pan, K., Pieri, M. M., Ross, N. P., Schneider, D. P., Simmons, A., York, D. G.
We present the first results from an ongoing survey for Damped Lyman-alpha systems (DLAs) in the spectra of z>2 quasars observed in the course of the Baryon Oscillation Spectroscopic Survey (BOSS), which is part of the Sloan Digital Sky Survey (SDSS)
Externí odkaz:
http://arxiv.org/abs/1210.1213
Autor:
Ak, N. Filiz, Brandt, W. N., Hall, P. B., Schneider, D. P., Anderson, S. F., Gibson, R. R., Lundgren, B. F., Myers, A. D., Petitjean, P., Ross, Nicholas P., Shen, Yue, York, D. G., Bizyaev, D., Brinkmann, J., Malanushenko, E., Oravetz, D. J., Pan, K., Simmons, A. E., Weaver, B. A.
We present 21 examples of C IV Broad Absorption Line (BAL) trough disappearance in 19 quasars selected from systematic multi-epoch observations of 582 bright BAL quasars (1.9 < z < 4.5) by the Sloan Digital Sky Survey-I/II (SDSS-I/II) and SDSS-III. T
Externí odkaz:
http://arxiv.org/abs/1208.0836
Autor:
Negrello, Mattia, Hopwood, R., De Zotti, G., Cooray, A., Verma, A., Bock, J., Frayer, D. T., Gurwell, M. A., Omont, A., Neri, R., Dannerbauer, H., Leeuw, L. L., Barton, E., Cooke, J., Kim, S., da Cunha, E., Rodighiero, G., Cox, P., Bonfield, D. G., Jarvis, M. J., Serjeant, S., Ivison, R. J., Dye, S., Aretxaga, I., Hughes, D. H., Ibar, E., Bertoldi, F., Valtchanov, I., Eales, S., Dunne, L., Driver, S. P., Auld, R., Buttiglione, S., Cava, A., Grady, C. A., Clements, D. L., Dariush, A., Fritz, J., Hill, D., Hornbeck, J. B., Kelvin, L., Lagache, G., Lopez-Caniego, M., Gonzalez-Nuevo, J., Maddox, S., Pascale, E., Pohlen, M., Rigby, E. E., Robotham, A., Simpson, C., Smith, D. J. B., Temi, P., Thompson, M. A., Woodgate, B. E., York, D. G., Aguirre, J. E., Beelen, A., Blain, A., Baker, A. J., Birkinshaw, M., Blundell, R., Bradford, C. M., Burgarella, D., Danese, L., Dunlop, J. S., Fleuren, S., Glenn, J., Harris, A. I., Kamenetzky, J., Lupu, R. E., Maddalena, R. J., Madore, B. F., Maloney, P. R., Matsuhara, H., Michalowski, M. J., Murphy, E. J., Naylor, B. J., Nguyen, H., Popescu, C., Rawlings, S., Rigopoulou, D., Scott, D., Scott, K. S., Seibert, M., Smail, I., Tuffs, R. J., Vieira, J. D., van der Werf, P. P., Zmuidzinas, J.
Gravitational lensing is a powerful astrophysical and cosmological probe and is particularly valuable at submillimeter wavelengths for the study of the statistical and individual properties of dusty starforming galaxies. However the identification of
Externí odkaz:
http://arxiv.org/abs/1011.1255