Matches in SemOpenAlex for { <https://semopenalex.org/work/W4298164079> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W4298164079 abstract "The He I 1 micron line is a high excitation line which allows us to probe the innermost regions of protostellar disks, and to trace both accreting and outflowing material. We use X-Shooter observations of a sample of 107 young stars in the Lupus (1-3 Myr) and Upper Scorpius (5-10 Myr) star-forming regions to search for correlations between the line properties, as well as the disk inclination and accretion luminosity. We identified eight distinct profile types in the sample. We fitted Gaussian curves to the line features to measure the maximum velocities traced in absorption, the full-width half-maximum (FWHM) of the line features, and the Gaussian area of the features. We compare the proportion of each profile type in our sample to previous studies in Taurus. We find significant variations between Taurus and Lupus in the proportion of P Cygni and inverse P Cygni profiles, and between Lupus and Upper Scorpius in the number of emission-only and combination profile types. We find that the blue-shifted absorption features appear less blue-shifted at disk inclinations close to edge-on, but no such trend with inclination is observed in sources with only red-shifted features. Higher accretion rates were observed in sources with strong blue-shifted features which, along with the changes in the proportions of each profile type observed in the two regions, indicates that younger sources may drive stronger jets or winds. Overall, we observe variations in the proportion of each profile type and in the line properties which indicates and evolution of accretion and ejection signatures over time, and with source properties. These results confirm past works and models of the He I line, but for a larger sample and for multiple star-forming regions. The work highlights the power of the He I line as a probe of the gas in the innermost regions of the disk." @default.
- W4298164079 created "2022-10-01" @default.
- W4298164079 creator A5002104897 @default.
- W4298164079 creator A5010058950 @default.
- W4298164079 creator A5022192451 @default.
- W4298164079 creator A5022644043 @default.
- W4298164079 creator A5046796013 @default.
- W4298164079 creator A5053553367 @default.
- W4298164079 creator A5054080692 @default.
- W4298164079 creator A5060878902 @default.
- W4298164079 creator A5077566100 @default.
- W4298164079 date "2022-08-04" @default.
- W4298164079 modified "2023-09-26" @default.
- W4298164079 title "The He I $lambda$10830 $AA$ line as a probe of winds and accretion in young stars in Lupus and Upper Scorpius" @default.
- W4298164079 doi "https://doi.org/10.48550/arxiv.2208.02940" @default.
- W4298164079 hasPublicationYear "2022" @default.
- W4298164079 type Work @default.
- W4298164079 citedByCount "0" @default.
- W4298164079 crossrefType "posted-content" @default.
- W4298164079 hasAuthorship W4298164079A5002104897 @default.
- W4298164079 hasAuthorship W4298164079A5010058950 @default.
- W4298164079 hasAuthorship W4298164079A5022192451 @default.
- W4298164079 hasAuthorship W4298164079A5022644043 @default.
- W4298164079 hasAuthorship W4298164079A5046796013 @default.
- W4298164079 hasAuthorship W4298164079A5053553367 @default.
- W4298164079 hasAuthorship W4298164079A5054080692 @default.
- W4298164079 hasAuthorship W4298164079A5060878902 @default.
- W4298164079 hasAuthorship W4298164079A5077566100 @default.
- W4298164079 hasBestOaLocation W42981640791 @default.
- W4298164079 hasConcept C108649604 @default.
- W4298164079 hasConcept C120665830 @default.
- W4298164079 hasConcept C121332964 @default.
- W4298164079 hasConcept C12287442 @default.
- W4298164079 hasConcept C1276947 @default.
- W4298164079 hasConcept C142724271 @default.
- W4298164079 hasConcept C150846664 @default.
- W4298164079 hasConcept C169791425 @default.
- W4298164079 hasConcept C198352243 @default.
- W4298164079 hasConcept C2524010 @default.
- W4298164079 hasConcept C2776401274 @default.
- W4298164079 hasConcept C2776912625 @default.
- W4298164079 hasConcept C2778113609 @default.
- W4298164079 hasConcept C2779134260 @default.
- W4298164079 hasConcept C33923547 @default.
- W4298164079 hasConcept C44870925 @default.
- W4298164079 hasConcept C4839761 @default.
- W4298164079 hasConcept C62520636 @default.
- W4298164079 hasConcept C71924100 @default.
- W4298164079 hasConcept C96141758 @default.
- W4298164079 hasConcept C98444146 @default.
- W4298164079 hasConceptScore W4298164079C108649604 @default.
- W4298164079 hasConceptScore W4298164079C120665830 @default.
- W4298164079 hasConceptScore W4298164079C121332964 @default.
- W4298164079 hasConceptScore W4298164079C12287442 @default.
- W4298164079 hasConceptScore W4298164079C1276947 @default.
- W4298164079 hasConceptScore W4298164079C142724271 @default.
- W4298164079 hasConceptScore W4298164079C150846664 @default.
- W4298164079 hasConceptScore W4298164079C169791425 @default.
- W4298164079 hasConceptScore W4298164079C198352243 @default.
- W4298164079 hasConceptScore W4298164079C2524010 @default.
- W4298164079 hasConceptScore W4298164079C2776401274 @default.
- W4298164079 hasConceptScore W4298164079C2776912625 @default.
- W4298164079 hasConceptScore W4298164079C2778113609 @default.
- W4298164079 hasConceptScore W4298164079C2779134260 @default.
- W4298164079 hasConceptScore W4298164079C33923547 @default.
- W4298164079 hasConceptScore W4298164079C44870925 @default.
- W4298164079 hasConceptScore W4298164079C4839761 @default.
- W4298164079 hasConceptScore W4298164079C62520636 @default.
- W4298164079 hasConceptScore W4298164079C71924100 @default.
- W4298164079 hasConceptScore W4298164079C96141758 @default.
- W4298164079 hasConceptScore W4298164079C98444146 @default.
- W4298164079 hasLocation W42981640791 @default.
- W4298164079 hasOpenAccess W4298164079 @default.
- W4298164079 hasPrimaryLocation W42981640791 @default.
- W4298164079 hasRelatedWork W1974539758 @default.
- W4298164079 hasRelatedWork W2051287918 @default.
- W4298164079 hasRelatedWork W2057588766 @default.
- W4298164079 hasRelatedWork W2098787203 @default.
- W4298164079 hasRelatedWork W2130709141 @default.
- W4298164079 hasRelatedWork W2164316835 @default.
- W4298164079 hasRelatedWork W2592455552 @default.
- W4298164079 hasRelatedWork W3099818359 @default.
- W4298164079 hasRelatedWork W3204427859 @default.
- W4298164079 hasRelatedWork W4293763789 @default.
- W4298164079 isParatext "false" @default.
- W4298164079 isRetracted "false" @default.
- W4298164079 workType "article" @default.