Matches in SemOpenAlex for { <https://semopenalex.org/work/W2914490695> ?p ?o ?g. }
Showing items 1 to 91 of
91
with 100 items per page.
- W2914490695 abstract "Although advances in exoplanet detection techniques have seen an increase in discoveries, observing a planet in the earliest stages of formation still remains a difficult task. Here four epochs of spectra of the transitional disk object T Cha are analysed to determine whether spectro-astrometry can be used to detect a signal from its proposed protoplanet, T Cha b. The unique properties of T Cha are also further constrained. H{alpha} and [O I]{lambda} 6300, the most prominent lines, were analysed using spectro-astrometry. H{alpha} being a direct accretion tracer is the target for the T Cha b detection while [O I]{lambda} 6300 is considered to be an indirect tracer of accretion. [O I]{lambda} 6300 is classified as a broad low velocity component (BC LVC). The mass accretion rate was derived for all epochs using new [O I]{lambda} 6300 LVC relationships and the H{alpha} line luminosity. It is shown that a wind is the likely origin of the [O I]{lambda} 6300 line and that the [O I]{lambda} 6300 line serves as a better accretion tracer than H{alpha} in this case. From the comparison between M acc([OI]) and M acc(H{alpha}) it is concluded that T Cha is not an intrinsically weak accretor but rather that a significant proportion of the H{alpha} emission tracing accretion is obscured. T Cha b is not detected in the spectro-astrometric analysis yet a detection limit of 0.5 mas is derived. The analysis in this case was hampered by spectro-astrometric artefacts and by the unique properties of T Cha. While it seems that spectro-astrometry as a means of detecting exoplanets in TDs can be challenging it can be used to put an limit on the strength of the H{alpha} emission from accreting planetary companions and thus can have an important input into the planning of high angular resolution observations." @default.
- W2914490695 created "2019-02-21" @default.
- W2914490695 creator A5064997838 @default.
- W2914490695 creator A5076557710 @default.
- W2914490695 creator A5089528925 @default.
- W2914490695 creator A5091904654 @default.
- W2914490695 date "2019-01-28" @default.
- W2914490695 modified "2023-10-18" @default.
- W2914490695 title "UVES Spectroscopy of T Chamaeleontis: Line Variability, Mass Accretion rate and Spectro-astrometric Analysis★" @default.
- W2914490695 cites W1979774681 @default.
- W2914490695 cites W1995615208 @default.
- W2914490695 cites W2033992747 @default.
- W2914490695 cites W2078854057 @default.
- W2914490695 cites W2096653914 @default.
- W2914490695 cites W2115124076 @default.
- W2914490695 cites W2171377871 @default.
- W2914490695 cites W2173365514 @default.
- W2914490695 cites W2541345984 @default.
- W2914490695 cites W2611183164 @default.
- W2914490695 cites W2780998261 @default.
- W2914490695 cites W3099714297 @default.
- W2914490695 cites W3101599961 @default.
- W2914490695 cites W3104897849 @default.
- W2914490695 cites W3105600224 @default.
- W2914490695 cites W343244306 @default.
- W2914490695 doi "https://doi.org/10.1093/mnras/stz280" @default.
- W2914490695 hasPublicationYear "2019" @default.
- W2914490695 type Work @default.
- W2914490695 sameAs 2914490695 @default.
- W2914490695 citedByCount "2" @default.
- W2914490695 countsByYear W29144906952020 @default.
- W2914490695 countsByYear W29144906952021 @default.
- W2914490695 crossrefType "journal-article" @default.
- W2914490695 hasAuthorship W2914490695A5064997838 @default.
- W2914490695 hasAuthorship W2914490695A5076557710 @default.
- W2914490695 hasAuthorship W2914490695A5089528925 @default.
- W2914490695 hasAuthorship W2914490695A5091904654 @default.
- W2914490695 hasBestOaLocation W29144906952 @default.
- W2914490695 hasConcept C120665830 @default.
- W2914490695 hasConcept C121332964 @default.
- W2914490695 hasConcept C1276947 @default.
- W2914490695 hasConcept C133725777 @default.
- W2914490695 hasConcept C150846664 @default.
- W2914490695 hasConcept C163479331 @default.
- W2914490695 hasConcept C180119722 @default.
- W2914490695 hasConcept C195803813 @default.
- W2914490695 hasConcept C198352243 @default.
- W2914490695 hasConcept C2524010 @default.
- W2914490695 hasConcept C2776401274 @default.
- W2914490695 hasConcept C2778113609 @default.
- W2914490695 hasConcept C33923547 @default.
- W2914490695 hasConcept C44870925 @default.
- W2914490695 hasConcept C4839761 @default.
- W2914490695 hasConcept C51244244 @default.
- W2914490695 hasConcept C96141758 @default.
- W2914490695 hasConceptScore W2914490695C120665830 @default.
- W2914490695 hasConceptScore W2914490695C121332964 @default.
- W2914490695 hasConceptScore W2914490695C1276947 @default.
- W2914490695 hasConceptScore W2914490695C133725777 @default.
- W2914490695 hasConceptScore W2914490695C150846664 @default.
- W2914490695 hasConceptScore W2914490695C163479331 @default.
- W2914490695 hasConceptScore W2914490695C180119722 @default.
- W2914490695 hasConceptScore W2914490695C195803813 @default.
- W2914490695 hasConceptScore W2914490695C198352243 @default.
- W2914490695 hasConceptScore W2914490695C2524010 @default.
- W2914490695 hasConceptScore W2914490695C2776401274 @default.
- W2914490695 hasConceptScore W2914490695C2778113609 @default.
- W2914490695 hasConceptScore W2914490695C33923547 @default.
- W2914490695 hasConceptScore W2914490695C44870925 @default.
- W2914490695 hasConceptScore W2914490695C4839761 @default.
- W2914490695 hasConceptScore W2914490695C51244244 @default.
- W2914490695 hasConceptScore W2914490695C96141758 @default.
- W2914490695 hasLocation W29144906951 @default.
- W2914490695 hasLocation W29144906952 @default.
- W2914490695 hasLocation W29144906953 @default.
- W2914490695 hasOpenAccess W2914490695 @default.
- W2914490695 hasPrimaryLocation W29144906951 @default.
- W2914490695 hasRelatedWork W1646167892 @default.
- W2914490695 hasRelatedWork W2021232529 @default.
- W2914490695 hasRelatedWork W2081809728 @default.
- W2914490695 hasRelatedWork W2105999278 @default.
- W2914490695 hasRelatedWork W2158183863 @default.
- W2914490695 hasRelatedWork W2167318537 @default.
- W2914490695 hasRelatedWork W2914490695 @default.
- W2914490695 hasRelatedWork W2931584328 @default.
- W2914490695 hasRelatedWork W3046143167 @default.
- W2914490695 hasRelatedWork W3105212379 @default.
- W2914490695 isParatext "false" @default.
- W2914490695 isRetracted "false" @default.
- W2914490695 magId "2914490695" @default.
- W2914490695 workType "article" @default.