Zobrazeno 1 - 10
of 264
pro vyhledávání: '"Worseck, G"'
Autor:
Amorín, R. O., Rodríguez-Henríquez, M., Fernández, V., Vílchez, J. M., Marques-Chaves, R., Schaerer, D., Izotov, Y. I., Firpo, V., Guseva, N., Jaskot, A. E., Komarova, L., Muñoz-Vergara, D., Oey, M. S., Bait, O., Carr, C., Chisholm, J., Ferguson, H., Flury, S. R., Giavalisco, M., Hayes, M. J., Henry, A., Ji, Z., King, W., Leclercq, F., Östlin, G., Pentericci, L., Saldana-Lopez, A., Thuan, T. X., Trebitsch, M., Wang, B., Worseck, G., Xu, X.
We report observational evidence of highly turbulent ionized gas kinematics in a sample of 20 Lyman continuum (LyC) emitters (LCEs) at low redshift ($z\sim 0.3$). Detailed Gaussian modeling of optical emission line profiles in high-dispersion spectra
Externí odkaz:
http://arxiv.org/abs/2401.04278
Publikováno v:
MNRAS 528, L10 (2024)
Using Hubble Space Telescope (HST)/Cosmic Origins Spectrograph (COS) observations of one of the most metal-poor dwarf star-forming galaxies (SFG) in the local Universe, J2229+2725, we have discovered an extremely strong nebular CIV 1549, 1551 emissio
Externí odkaz:
http://arxiv.org/abs/2311.02015
Publikováno v:
MNRAS 527, 281 (2024)
We present observations with the Cosmic Origins Spectrograph onboard the Hubble Space Telescope of nine most metal-deficient compact star-forming galaxies with oxygen abundances 12+log(O/H)=6.97-7.23, redshifts z=0.02811-0.13320, and stellar masses M
Externí odkaz:
http://arxiv.org/abs/2310.08441
Autor:
Christensen, L., Vergani, S. D., Schulze, S., Annau, N., Selsing, J., Fynbo, J. P. U., de Ugarte Postigo, A., Cañameras, R., Lopez, S., Passi, D., Cortés-Zuleta, P., Ellison, S. L., D’Odorico, V., Becker, G., Berg, T. A. M., Cano, Z., Covino, S., Cupani, G., D’Elia, V., Goldoni, P., Gomboc, A., Hammer, F., Heintz, K. E., Jakobsson, P., Japelj, J., Kaper, L., Malesani, D., Møller, P., Petitjean, P., Pugliese, V., Sánchez-Ramírez, R., Tanvir, N. R., Thöne, C. C., Vestergaard, M., Wiersema, K., Worseck, G.
Previous studies have shown that the incidence rate of intervening strong Mg II absorbers towards gamma-ray bursts (GRBs) were a factor of 2-4 higher than towards quasars. Exploring the similar sized and uniformly selected legacy data sets XQ-100 and
Externí odkaz:
http://hdl.handle.net/10150/626409
http://arizona.openrepository.com/arizona/handle/10150/626409
http://arizona.openrepository.com/arizona/handle/10150/626409
Autor:
Izotov, Y. I., Schaerer, D., Worseck, G., Berg, D., Chisholm, J., Ravindranath, S., Thuan, T. X.
Publikováno v:
MNRAS 522, 1228 (2023)
We present observations with the Space Telescope Imaging Spectrograph (STIS) onboard the Hubble Space Telescope of eleven Lyman continuum (LyC) leaking galaxies at redshifts, z, in the range 0.29-0.43, with oxygen abundances 12+log(O/H)=7.64-8.16, st
Externí odkaz:
http://arxiv.org/abs/2304.02452
Autor:
Perrotta, S., D'Odorico, V., Prochaska, J. X., Cristiani, S., Cupani, G., Ellison, S., López, S., Becker, G. D., Berg, T. A. M., Christensen, L., Denney, K. D., Hamann, F., Pâris, I., Vestergaard, M., Worseck, G.
We statistically study the physical properties of a sample of narrow absorption line (NAL) systems looking for empirical evidences to distinguish between intrinsic and intervening NALs without taking into account any a priori definition or velocity c
Externí odkaz:
http://hdl.handle.net/10150/621733
http://arizona.openrepository.com/arizona/handle/10150/621733
http://arizona.openrepository.com/arizona/handle/10150/621733
Autor:
López, S., D’Odorico, V., Ellison, S. L., Becker, G. D., Christensen, L., Cupani, G., Denney, K. D., Pâris, I., Worseck, G., Berg, T. A. M., Cristiani, S., Dessauges-Zavadsky, M., Haehnelt, M., Hamann, F., Hennawi, J., Iršič, V., Kim, T.-S., López, P., Lund Saust, R., Ménard, B., Perrotta, S., Prochaska, J. X., Sánchez-Ramírez, R., Vestergaard, M., Viel, M., Wisotzki, L.
We describe the execution and data reduction of the European Southern Observatory Large Programme "Quasars and their absorption lines: a legacy survey of the high-redshift Universe with VLT/X-shooter" (hereafter "XQ-100"). XQ-100 has produced and mad
Externí odkaz:
http://hdl.handle.net/10150/622799
http://arizona.openrepository.com/arizona/handle/10150/622799
http://arizona.openrepository.com/arizona/handle/10150/622799
Autor:
Chisholm, J., Saldana-Lopez, A., Flury, S., Schaerer, D., Jaskot, A., Amorin, R., Atek, H., Finkelstein, S., Fleming, B., Ferguson, H., Fernandez, V., Giavalisco, M., Hayes, M., Heckman, T., Henry, A., Ji, Z., Marques-Chaves, R., Mauerhofer, V., McCandliss, S., Oey, M. S., Ostlin, G., Rutkowski, M., Scarlata, C., Thuan, T., Trebitsch, M., Wang, B., Worseck, G., Xu, X.
Most of the hydrogen in the intergalactic medium (IGM) was rapidly ionized at high-redshifts. While observations have established that reionization occurred, observational constraints on the emissivity of ionizing photons at high-redshift remains elu
Externí odkaz:
http://arxiv.org/abs/2207.05771
Publikováno v:
MNRAS 515, 2864 (2022)
We present observations with the Cosmic Origins Spectrograph onboard the Hubble Space Telescope of seven compact low-mass star-forming galaxies at redshifts, z,in the range 0.3161-0.4276, with various O3Mg2=[OIII]5007/MgII 2796+2803 and Mg2=MgII 2796
Externí odkaz:
http://arxiv.org/abs/2207.04483
Autor:
Marques-Chaves, R., Schaerer, D., Amorín, R. O., Atek, H., Borthakur, S., Chisholm, J., Fernández, V., Flury, S. R., Giavalisco, M., Grazian, A., Hayes, M. J., Heckman, T. M., Henry, A., Izotov, Y. I., Jaskot, A. E., Ji, Z., McCandliss, S. R., Oey, M. S., Östlin, G., Ravindranath, S., Rutkowski, M. J., Saldana-Lopez, A., Teplitz, H., Thuan, T. X., Verhamme, A., Wang, B., Worseck, G., Xu, X.
Publikováno v:
A&A 663, L1 (2022)
The properties that govern the production and escape of hydrogen ionizing photons (Lyman continuum, LyC; with energies >13.6 eV) in star-forming galaxies are still poorly understood, but they are key to identifying and characterizing the sources that
Externí odkaz:
http://arxiv.org/abs/2205.05567