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- W2020116083 abstract "We present an analysis of the Ly-a forest toward 3C 273 from the Space Telescope Imaging Spectrograph at ~7 km/s resolution, along with re-processed data from the Far Ultraviolet Spectroscopic Explorer. The high UV flux of 3C 273 allows us to probe the weak, low z absorbers. The main sample consists of 21 HI absorbers that we could discriminate to a sensitivity of log NHI~ 12.5. The redshift density for absorbers with 13.1<log NHI<14.0 is ~1.5 sigma below the mean for other lines of sight; for log NHI >= 12.5, it is consistent with numerical model predictions. The Doppler parameter distribution is consistent with other low z samples. We find no evidence for a break in the column density power-law distribution to log NHI=12.3. A broad Ly-a absorber (BLA) is within Delta v =< 50 km/s and 1.3 local frame Mpc of two ~0.5L* galaxies, with an OVI absorber ~700 km/s away, similarly close to three galaxies and indicating overdense environments. We detect clustering on the Delta v<1000 km/s scale at 3.4 sigma significance for log NHI >= 12.6, consistent with the level predicted from hydrodynamical simulations, and indication for a Ly-a forest void at 0.09<z<0.12. We find at least two components for the z=0.0053 Virgo absorber, but the total NHI column is not significantly changed." @default.
- W2020116083 created "2016-06-24" @default.
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- W2020116083 date "2010-07-01" @default.
- W2020116083 modified "2023-09-25" @default.
- W2020116083 title "The low-redshift Ly forest towards 3C 273" @default.
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- W2020116083 doi "https://doi.org/10.1111/j.1365-2966.2010.16519.x" @default.
- W2020116083 hasPublicationYear "2010" @default.
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