Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Monier, Eric M."'
We present ten metallicity measurements for quasar absorbers near $z=1.2$ that were selected for having unusually significant ZnII absorption in their SDSS spectra. Follow-up UV space spectroscopy of the Ly$\alpha$ region shows that all ten have damp
Externí odkaz:
http://arxiv.org/abs/1811.08813
We derive the statistical properties of neutral gas at redshifts 0.11
Externí odkaz:
http://arxiv.org/abs/1704.01634
Autor:
Rahmani, Hadi, Peroux, Celine, Turnshek, David A., Rao, Sandhya M., Quiret, Samuel, Hamilton, Timothy S., Kulkarni, Varsha P., Monier, Eric M.
We present the study of a sample of nine QSO fields, with damped-Ly-alpha (DLA) or sub-DLA systems at z~0.6, observed with the X-Shooter spectrograph at the Very Large Telescope. By suitably positioning the X-Shooter slit based on high spatial resolu
Externí odkaz:
http://arxiv.org/abs/1609.03843
Autor:
Turnshek, David A., Monier, Eric M., Rao, Sandhya M., Hamilton, Timothy S., Sardane, Gendith M., Held, Ryan
Quasar damped Ly-alpha (DLA) absorption line systems with redshifts z<1.65 are used to trace neutral gas over approximately 70 per cent of the most recent history of the Universe. However, such systems fall in the UV and are rarely found in blind UV
Externí odkaz:
http://arxiv.org/abs/1404.2914
Autor:
Rao, Sandhya M., Belfort-Mihalyi, Michele, Turnshek, David A., Monier, Eric M., Nestor, Daniel B., Quider, Anna M.
We present results from a search for galaxies that give rise to damped Lyman alpha (DLA), subDLA, and Lyman limit system (LLS) absorption at redshifts 0.1 ~< z ~< 1 in the spectra of background quasars. The sample was formed from a larger sample of s
Externí odkaz:
http://arxiv.org/abs/1103.4047
Autor:
Quider, Anna M., Nestor, Daniel B., Turnshek, David A., Rao, Sandhya M., Monier, Eric M., Weyant, Anja N., Busche, Joseph R.
We present a catalog of intervening MgII quasar absorption-line systems in the redshift interval 0.36 <= z <= 2.28. The catalog was built from Sloan Digital Sky Survey Data Release Four (SDSS DR4) quasar spectra. Currently, the catalog contains > 17,
Externí odkaz:
http://arxiv.org/abs/1103.1626
Autor:
Turnshek, David A., Rao, Sandhya M., Nestor, Daniel B., Berk, Daniel Vanden, Belfort, Michele, Monier, Eric M.
Publikováno v:
Astrophys.J. 609 (2004) L53-L58
We report the discovery of two damped Ly-alpha absorption-line systems (DLAs) near redshift z=1 along a single quasar sightline (Q1727+5302) with neutral hydrogen column densities of N(HI) = (1.45\pm0.15)\times10^{21} and (2.60\pm0.20)\times10^{21} a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404609
Publikováno v:
Astrophys.J. 590 (2003) 730-739
Chandra X-Ray Observatory (CXO) ACIS-S spectra of three quasars which lie behind three foreground damped Lyman alpha (DLA) absorbers are analyzed in order to attempt to determine the amount of photoelectric absorption due to metals present in their x
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302550
Autor:
Rao, Sandhya M., Nestor, Daniel B., Turnshek, David A., Lane, Wendy M., Monier, Eric M., Bergeron, Jacqueline
Publikováno v:
Astrophys.J.595:94-108,2003
We present optical and near-infrared ground-based imaging results on four low-redshift damped Ly-alpha (DLA) galaxies. The corresponding DLA systems were discovered in our HST spectroscopic surveys for DLA lines in known strong MgII absorption-line s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211297
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