FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4309969395> ?p ?o ?g. }

• W4309969395 abstract "The Gaia Radial Velocity Spectrometer provides the unique opportunity of a spectroscopic analysis of millions of stars at medium-resolution in the near-infrared. This wavelength range includes the Ca II infrared triplet (IRT), which is a good diagnostics of magnetic activity in the chromosphere of late-type stars. Here we present the method devised for inferring the Gaia stellar activity index together with its scientific validation. A sample of well studied PMS stars is considered to identify the regime in which the Gaia stellar activity index may be affected by mass accretion. The position of these stars in the colour-magnitude diagram and the correlation with the amplitude of the photometric rotational modulation is also scrutinised. Three regimes of the chromospheric stellar activity are identified, confirming suggestions made by previous authors on much smaller $R'_{rm HK}$ datasets. The highest stellar activity regime is associated with PMS stars and RS CVn systems, in which activity is enhanced by tidal interaction. Some evidence of a bimodal distribution in MS stars with $T_{rm eff}ge$ 5000 K is also found, which defines the two other regimes, without a clear gap in between. Stars with 3500 K$le T_{rm eff} le$ 5000 K are found to be either very active PMS stars or active MS stars with a unimodal distribution in chromospheric activity. A dramatic change in the activity distribution is found for $T_{rm eff}le$3500 K, with a dominance of low activity stars close to the transition between partially- and fully-convective stars and a rise in activity down into the fully-convective regime." @default.
• W4309969395 created "2022-11-30" @default.
• W4309969395 creator A5000750091 @default.
• W4309969395 creator A5001945519 @default.
• W4309969395 creator A5006635359 @default.
• W4309969395 creator A5006976296 @default.
• W4309969395 creator A5008261326 @default.
• W4309969395 creator A5010251014 @default.
• W4309969395 creator A5010574925 @default.
• W4309969395 creator A5014416375 @default.
• W4309969395 creator A5015526105 @default.
• W4309969395 creator A5016114465 @default.
• W4309969395 creator A5017996166 @default.
• W4309969395 creator A5018147934 @default.
• W4309969395 creator A5020183718 @default.
• W4309969395 creator A5020834340 @default.
• W4309969395 creator A5021211527 @default.
• W4309969395 creator A5021292789 @default.
• W4309969395 creator A5021333893 @default.
• W4309969395 creator A5022645899 @default.
• W4309969395 creator A5023880250 @default.
• W4309969395 creator A5024465813 @default.
• W4309969395 creator A5025522639 @default.
• W4309969395 creator A5026406390 @default.
• W4309969395 creator A5029418041 @default.
• W4309969395 creator A5029465377 @default.
• W4309969395 creator A5031232521 @default.
• W4309969395 creator A5031237477 @default.
• W4309969395 creator A5033924188 @default.
• W4309969395 creator A5033946762 @default.
• W4309969395 creator A5034672626 @default.
• W4309969395 creator A5034933080 @default.
• W4309969395 creator A5035018437 @default.
• W4309969395 creator A5035870363 @default.
• W4309969395 creator A5037312248 @default.
• W4309969395 creator A5037499382 @default.
• W4309969395 creator A5041434074 @default.
• W4309969395 creator A5041677164 @default.
• W4309969395 creator A5042208342 @default.
• W4309969395 creator A5043279924 @default.
• W4309969395 creator A5043342442 @default.
• W4309969395 creator A5046402699 @default.
• W4309969395 creator A5047376411 @default.
• W4309969395 creator A5048697844 @default.
• W4309969395 creator A5049863792 @default.
• W4309969395 creator A5050900751 @default.
• W4309969395 creator A5051034166 @default.
• W4309969395 creator A5051761102 @default.
• W4309969395 creator A5052554921 @default.
• W4309969395 creator A5052887452 @default.
• W4309969395 creator A5055040316 @default.
• W4309969395 creator A5056188777 @default.
• W4309969395 creator A5057056313 @default.
• W4309969395 creator A5057328650 @default.
• W4309969395 creator A5058777751 @default.
• W4309969395 creator A5062308114 @default.
• W4309969395 creator A5062823976 @default.
• W4309969395 creator A5062955070 @default.
• W4309969395 creator A5063268838 @default.
• W4309969395 creator A5064647754 @default.
• W4309969395 creator A5065291047 @default.
• W4309969395 creator A5067561415 @default.
• W4309969395 creator A5067951841 @default.
• W4309969395 creator A5068446506 @default.
• W4309969395 creator A5069504990 @default.
• W4309969395 creator A5070050352 @default.
• W4309969395 creator A5070680426 @default.
• W4309969395 creator A5072598529 @default.
• W4309969395 creator A5072973606 @default.
• W4309969395 creator A5073218736 @default.
• W4309969395 creator A5073675870 @default.
• W4309969395 creator A5073952491 @default.
• W4309969395 creator A5074486506 @default.
• W4309969395 creator A5074736084 @default.
• W4309969395 creator A5075587029 @default.
• W4309969395 creator A5076146841 @default.
• W4309969395 creator A5078344735 @default.
• W4309969395 creator A5081464814 @default.
• W4309969395 creator A5084481387 @default.
• W4309969395 creator A5084996925 @default.
• W4309969395 creator A5085456663 @default.
• W4309969395 creator A5086412041 @default.
• W4309969395 creator A5086635393 @default.
• W4309969395 creator A5087295320 @default.
• W4309969395 creator A5088208823 @default.
• W4309969395 creator A5091025542 @default.
• W4309969395 creator A5091240273 @default.
• W4309969395 date "2022-06-12" @default.
• W4309969395 modified "2023-10-12" @default.
• W4309969395 title "Gaia Data Release 3. Stellar chromospheric activity and mass accretion from Ca II IRT observed by the Radial Velocity Spectrometer" @default.
• W4309969395 doi "https://doi.org/10.48550/arxiv.2206.05766" @default.
• W4309969395 hasPublicationYear "2022" @default.
• W4309969395 type Work @default.
• W4309969395 citedByCount "0" @default.
• W4309969395 crossrefType "posted-content" @default.
• W4309969395 hasAuthorship W4309969395A5000750091 @default.
• W4309969395 hasAuthorship W4309969395A5001945519 @default.
• W4309969395 hasAuthorship W4309969395A5006635359 @default.
• W4309969395 hasAuthorship W4309969395A5006976296 @default.
• W4309969395 hasAuthorship W4309969395A5008261326 @default.

• next