Matches in SemOpenAlex for { <https://semopenalex.org/work/W2151272912> ?p ?o ?g. }
- W2151272912 abstract "We present VLT/UVES spectroscopy of the quasar Q0841+129, whose spectrum shows a proximate damped Lyman-alpha (PDLA) absorber at z=2.47621 and a proximate sub-DLA at z=2.50620, both lying close in redshift to the QSO itself at z_em=2.49510+/-0.00003. This fortuitous arrangement, with the sub-DLA acting as a filter that hardens the QSO's ionizing radiation field, allows us to model the ionization level in the foreground PDLA, and provides an interesting case-study on the origin of the high-ion absorption lines Si IV, C IV, and O VI in DLAs. The high ions in the PDLA show at least five components spanning a total velocity extent of ~160 km/s, whereas the low ions exist predominantly in a single component spanning just 30 km/s. We examine various models for the origin of the high ions. Both photoionization and turbulent mixing layer models are fairly successful at reproducing the observed ionic ratios after correcting for the non-solar relative abundance pattern, though neither model can explain all five components. We show that the turbulent mixing layer model, in which the high ions trace the interfaces between the cool PDLA gas and a hotter phase of shock-heated plasma, can explain the average high-ion ratios measured in a larger sample of 12 DLAs." @default.
- W2151272912 created "2016-06-24" @default.
- W2151272912 creator A5007052267 @default.
- W2151272912 creator A5013460061 @default.
- W2151272912 creator A5027589110 @default.
- W2151272912 creator A5081862765 @default.
- W2151272912 creator A5084059584 @default.
- W2151272912 date "2011-10-01" @default.
- W2151272912 modified "2023-10-17" @default.
- W2151272912 title "High-ion absorption in the proximate damped Ly-αsystem toward Q0841+129" @default.
- W2151272912 cites W1487982544 @default.
- W2151272912 cites W1561160156 @default.
- W2151272912 cites W1634574618 @default.
- W2151272912 cites W1753927507 @default.
- W2151272912 cites W1921476237 @default.
- W2151272912 cites W1966671643 @default.
- W2151272912 cites W1967295018 @default.
- W2151272912 cites W1969473885 @default.
- W2151272912 cites W1974385880 @default.
- W2151272912 cites W1976097415 @default.
- W2151272912 cites W1980917288 @default.
- W2151272912 cites W1983938085 @default.
- W2151272912 cites W1984481343 @default.
- W2151272912 cites W1984987787 @default.
- W2151272912 cites W1986921646 @default.
- W2151272912 cites W1995333740 @default.
- W2151272912 cites W1996211208 @default.
- W2151272912 cites W1999828425 @default.
- W2151272912 cites W2001085255 @default.
- W2151272912 cites W2001350042 @default.
- W2151272912 cites W2002970178 @default.
- W2151272912 cites W2003485879 @default.
- W2151272912 cites W2007857565 @default.
- W2151272912 cites W2027998626 @default.
- W2151272912 cites W2030568115 @default.
- W2151272912 cites W2032806516 @default.
- W2151272912 cites W2034437694 @default.
- W2151272912 cites W2039241537 @default.
- W2151272912 cites W2041800716 @default.
- W2151272912 cites W2042749826 @default.
- W2151272912 cites W2044278531 @default.
- W2151272912 cites W2045603377 @default.
- W2151272912 cites W2050661868 @default.
- W2151272912 cites W2051059595 @default.
- W2151272912 cites W2064888972 @default.
- W2151272912 cites W2068928940 @default.
- W2151272912 cites W2069583115 @default.
- W2151272912 cites W2076953129 @default.
- W2151272912 cites W2079813308 @default.
- W2151272912 cites W2084644674 @default.
- W2151272912 cites W2090894327 @default.
- W2151272912 cites W2111817932 @default.
- W2151272912 cites W2112028701 @default.
- W2151272912 cites W2115392740 @default.
- W2151272912 cites W2117105462 @default.
- W2151272912 cites W2118311540 @default.
- W2151272912 cites W2119037421 @default.
- W2151272912 cites W2123197592 @default.
- W2151272912 cites W2133860989 @default.
- W2151272912 cites W2154822740 @default.
- W2151272912 cites W2163746050 @default.
- W2151272912 cites W2213776812 @default.
- W2151272912 cites W2315647678 @default.
- W2151272912 cites W24142966 @default.
- W2151272912 cites W2899497983 @default.
- W2151272912 cites W2987869637 @default.
- W2151272912 cites W3098035854 @default.
- W2151272912 cites W3098069038 @default.
- W2151272912 cites W3098339022 @default.
- W2151272912 cites W3099137176 @default.
- W2151272912 cites W3099349155 @default.
- W2151272912 cites W3099437765 @default.
- W2151272912 cites W3099590536 @default.
- W2151272912 cites W3099715815 @default.
- W2151272912 cites W3099731122 @default.
- W2151272912 cites W3100294349 @default.
- W2151272912 cites W3101099538 @default.
- W2151272912 cites W3101819017 @default.
- W2151272912 cites W3102213226 @default.
- W2151272912 cites W3102357593 @default.
- W2151272912 cites W3102952607 @default.
- W2151272912 cites W3122992179 @default.
- W2151272912 cites W3125838123 @default.
- W2151272912 cites W4291965446 @default.
- W2151272912 cites W4300624206 @default.
- W2151272912 cites W4301170601 @default.
- W2151272912 doi "https://doi.org/10.1051/0004-6361/201116995" @default.
- W2151272912 hasPublicationYear "2011" @default.
- W2151272912 type Work @default.
- W2151272912 sameAs 2151272912 @default.
- W2151272912 citedByCount "9" @default.
- W2151272912 countsByYear W21512729122012 @default.
- W2151272912 countsByYear W21512729122013 @default.
- W2151272912 countsByYear W21512729122014 @default.
- W2151272912 countsByYear W21512729122016 @default.
- W2151272912 countsByYear W21512729122017 @default.
- W2151272912 countsByYear W21512729122018 @default.
- W2151272912 countsByYear W21512729122019 @default.
- W2151272912 countsByYear W21512729122022 @default.
- W2151272912 crossrefType "journal-article" @default.