Quasars with P v broad absorption in BOSS data release 9 Article Swipe
YOU?
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· 2017
· Open Access
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· DOI: https://doi.org/10.1093/mnras/stx870
Broad absorption lines (BALs) found in a significant fraction of quasar\nspectra identify high-velocity outflows that might be present in all quasars\nand could be a major factor in feedback to galaxy evolution. Understanding the\nnature of these flows requires further constraints on their physical\nproperties, including their column densities, for which well-studied BALs, such\nas CIV 1548,1551, typically provide only a lower limit because of saturation\neffects. Low-abundance lines, such as PV 1118,1128, indicate large column\ndensities, implying outflows more powerful than measurements of CIV alone would\nindicate. We search through a sample of 2694 BAL quasars from the SDSS-III/BOSS\nDR9 quasar catalog for such absorption, and we identify 81 `definite' and 86\n`probable' detections of PV broad absorption, yielding a firm lower limit of\n3.0-6.2% for the incidence of such absorption among BAL quasars. The\nPV-detected quasars tend to have stronger CIV and SiIV absorption, as well as a\nhigher incidence of LoBAL absorption, than the overall BAL quasar population.\nMany of the PV-detected quasars have CIV troughs that do not reach zero\nintensity (at velocities where PV is detected), confirming that the outflow gas\nonly partially covers the UV continuum source. PV appears significantly in a\ncomposite spectrum of non-PV-detected BAL quasars, indicating that PV\nabsorption (and large column densities) are much more common than indicated by\nour search results. Our sample of PV detections significantly increases the\nnumber of known PV detections, providing opportunities for follow-up studies to\nbetter understand BAL outflow energetics.\n
Related Topics
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1093/mnras/stx870
- OA Status
- green
- Cited By
- 16
- References
- 66
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2607387406
Raw OpenAlex JSON
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https://openalex.org/W2607387406Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1093/mnras/stx870Digital Object Identifier
- Title
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Quasars with P v broad absorption in BOSS data release 9Work title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2017Year of publication
- Publication date
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2017-04-07Full publication date if available
- Authors
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Daniel M. Capellupo, Fred Hamann, H. Herbst, W. N. Brandt, J. Ge, Isabelle Pâris, P. Petitjean, Donald P. Schneider, A. Streblyanska, Donald G. YorkList of authors in order
- Landing page
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https://doi.org/10.1093/mnras/stx870Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
- OA URL
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https://arxiv.org/pdf/1704.07445Direct OA link when available
- Concepts
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Quasar, Physics, Astrophysics, Galaxy, Spectral line, Absorption spectroscopy, Lyman limit, Absorption (acoustics), Population, Baryon, Sky, Redshift, Astronomy, Medicine, Optics, Intergalactic medium, Environmental healthTop concepts (fields/topics) attached by OpenAlex
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16Total citation count in OpenAlex
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2024: 1, 2023: 2, 2022: 1, 2021: 2, 2020: 2Per-year citation counts (last 5 years)
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66Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.understand | 222 |
| abstract_inverted_index.velocities | 162 |
| abstract_inverted_index.PV-detected | 151 |
| abstract_inverted_index.absorption, | 97, 109, 134, 142 |
| abstract_inverted_index.constraints | 38 |
| abstract_inverted_index.detections, | 215 |
| abstract_inverted_index.significant | 7 |
| abstract_inverted_index.the\nnature | 32 |
| abstract_inverted_index.the\nnumber | 211 |
| abstract_inverted_index.a\ncomposite | 182 |
| abstract_inverted_index.measurements | 76 |
| abstract_inverted_index.of\n3.0-6.2% | 115 |
| abstract_inverted_index.quasars\nand | 20 |
| abstract_inverted_index.well-studied | 48 |
| abstract_inverted_index.Low-abundance | 62 |
| abstract_inverted_index.Understanding | 31 |
| abstract_inverted_index.energetics.\n | 225 |
| abstract_inverted_index.high-velocity | 12 |
| abstract_inverted_index.opportunities | 217 |
| abstract_inverted_index.significantly | 180, 209 |
| abstract_inverted_index.86\n`probable' | 104 |
| abstract_inverted_index.PV\nabsorption | 190 |
| abstract_inverted_index.non-PV-detected | 185 |
| abstract_inverted_index.quasar\nspectra | 10 |
| abstract_inverted_index.zero\nintensity | 160 |
| abstract_inverted_index.The\nPV-detected | 125 |
| abstract_inverted_index.would\nindicate. | 80 |
| abstract_inverted_index.population.\nMany | 148 |
| abstract_inverted_index.SDSS-III/BOSS\nDR9 | 92 |
| abstract_inverted_index.column\ndensities, | 70 |
| abstract_inverted_index.saturation\neffects. | 61 |
| abstract_inverted_index.physical\nproperties, | 41 |
| cited_by_percentile_year.max | 98 |
| cited_by_percentile_year.min | 89 |
| corresponding_author_ids | https://openalex.org/A5064650587 |
| countries_distinct_count | 4 |
| institutions_distinct_count | 10 |
| corresponding_institution_ids | https://openalex.org/I5023651 |
| citation_normalized_percentile.value | 0.86067017 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |