FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2891775555> ?p ?o ?g. }

• W2891775555 endingPage "4679" @default.
• W2891775555 startingPage "4662" @default.
• W2891775555 abstract "We present the results from a study of nitrogen chemistry in Class 0/I proto-brown dwarfs (proto-BDs). We have used the IRAM 30 m telescope to observe the CN (2-1), HCN (3-2), and HNC (3-2) lines in seven proto-BDs. All proto-BDs show a large CN/HCN abundance ratio of >20, and an HNC/HCN abundance ratio close to or larger than unity. The enhanced CN/HCN ratios can be explained by high UV flux originating from an active accretion zone in the proto-BDs. The larger than unity HNC/HCN ratio for the proto-BDs is likely caused by a combination of low temperature and high density. Both CN and HNC show a flat distribution with CO, indicating that these species can survive in regions where CO is depleted. We have investigated the correlations in the molecular abundances of these species for the proto-BDs with Class 0/I protostars. We find tentative trends of CN (HCN) abundances being about an order of magnitude higher (lower) in the proto-BDs compared to protostars. HNC for the proto-BDs shows a nearly constant abundance unlike the large spread of ∼2 orders of magnitude seen for the protostars. Also notable is a rise in the HNC/HCN abundance ratio for the lowest luminosity objects, suggesting that this ratio is higher under low-temperature environments. None of the relatively evolved Class Flat/Class II brown dwarfs in our sample show emission in HNC. The HNC molecule can be considered as an efficient tracer to search and identify early-stage sub-stellar mass objects." @default.
• W2891775555 created "2018-09-27" @default.
• W2891775555 creator A5014369771 @default.
• W2891775555 creator A5025067312 @default.
• W2891775555 creator A5090718980 @default.
• W2891775555 date "2018-09-20" @default.
• W2891775555 modified "2023-09-27" @default.
• W2891775555 title "Chemical tracers in proto-brown dwarfs: CN, HCN, and HNC observations" @default.
• W2891775555 cites W1604608543 @default.
• W2891775555 cites W1656728464 @default.
• W2891775555 cites W1832064417 @default.
• W2891775555 cites W1924246703 @default.
• W2891775555 cites W1989986103 @default.
• W2891775555 cites W1993671389 @default.
• W2891775555 cites W2002249160 @default.
• W2891775555 cites W2002968199 @default.
• W2891775555 cites W2014794389 @default.
• W2891775555 cites W2016542521 @default.
• W2891775555 cites W2040923092 @default.
• W2891775555 cites W2059665203 @default.
• W2891775555 cites W2067470861 @default.
• W2891775555 cites W2074656532 @default.
• W2891775555 cites W2080254441 @default.
• W2891775555 cites W2093342937 @default.
• W2891775555 cites W2101681357 @default.
• W2891775555 cites W2117747963 @default.
• W2891775555 cites W2119504099 @default.
• W2891775555 cites W2128294460 @default.
• W2891775555 cites W2131678940 @default.
• W2891775555 cites W2132762521 @default.
• W2891775555 cites W2137777144 @default.
• W2891775555 cites W2141128460 @default.
• W2891775555 cites W2158790350 @default.
• W2891775555 cites W2163097250 @default.
• W2891775555 cites W2166983740 @default.
• W2891775555 cites W2316385923 @default.
• W2891775555 cites W2545435752 @default.
• W2891775555 cites W2590070952 @default.
• W2891775555 cites W2784586428 @default.
• W2891775555 cites W3098096677 @default.
• W2891775555 cites W3098221386 @default.
• W2891775555 cites W3098935317 @default.
• W2891775555 cites W3099015392 @default.
• W2891775555 cites W3099224763 @default.
• W2891775555 cites W3099527521 @default.
• W2891775555 cites W3099708284 @default.
• W2891775555 cites W3100647972 @default.
• W2891775555 cites W3102728752 @default.
• W2891775555 cites W3103235987 @default.
• W2891775555 cites W3106350750 @default.
• W2891775555 cites W3106396104 @default.
• W2891775555 cites W3123957495 @default.
• W2891775555 cites W3125209653 @default.
• W2891775555 cites W4248052252 @default.
• W2891775555 doi "https://doi.org/10.1093/mnras/sty2583" @default.
• W2891775555 hasPublicationYear "2018" @default.
• W2891775555 type Work @default.
• W2891775555 sameAs 2891775555 @default.
• W2891775555 citedByCount "18" @default.
• W2891775555 countsByYear W28917755552018 @default.
• W2891775555 countsByYear W28917755552019 @default.
• W2891775555 countsByYear W28917755552020 @default.
• W2891775555 countsByYear W28917755552021 @default.
• W2891775555 countsByYear W28917755552022 @default.
• W2891775555 countsByYear W28917755552023 @default.
• W2891775555 crossrefType "journal-article" @default.
• W2891775555 hasAuthorship W2891775555A5014369771 @default.
• W2891775555 hasAuthorship W2891775555A5025067312 @default.
• W2891775555 hasAuthorship W2891775555A5090718980 @default.
• W2891775555 hasBestOaLocation W28917755552 @default.
• W2891775555 hasConcept C121332964 @default.
• W2891775555 hasConcept C12287442 @default.
• W2891775555 hasConcept C125857072 @default.
• W2891775555 hasConcept C150846664 @default.
• W2891775555 hasConcept C163531172 @default.
• W2891775555 hasConcept C178790620 @default.
• W2891775555 hasConcept C185592680 @default.
• W2891775555 hasConcept C18797539 @default.
• W2891775555 hasConcept C2776401274 @default.
• W2891775555 hasConcept C2777088479 @default.
• W2891775555 hasConcept C44870925 @default.
• W2891775555 hasConcept C505870484 @default.
• W2891775555 hasConcept C77077793 @default.
• W2891775555 hasConcept C86803240 @default.
• W2891775555 hasConcept C98444146 @default.
• W2891775555 hasConceptScore W2891775555C121332964 @default.
• W2891775555 hasConceptScore W2891775555C12287442 @default.
• W2891775555 hasConceptScore W2891775555C125857072 @default.
• W2891775555 hasConceptScore W2891775555C150846664 @default.
• W2891775555 hasConceptScore W2891775555C163531172 @default.
• W2891775555 hasConceptScore W2891775555C178790620 @default.
• W2891775555 hasConceptScore W2891775555C185592680 @default.
• W2891775555 hasConceptScore W2891775555C18797539 @default.
• W2891775555 hasConceptScore W2891775555C2776401274 @default.
• W2891775555 hasConceptScore W2891775555C2777088479 @default.
• W2891775555 hasConceptScore W2891775555C44870925 @default.
• W2891775555 hasConceptScore W2891775555C505870484 @default.
• W2891775555 hasConceptScore W2891775555C77077793 @default.

• next