Matches in SemOpenAlex for { <https://semopenalex.org/work/W4386228522> ?p ?o ?g. }
Showing items 1 to 61 of
61
with 100 items per page.
- W4386228522 abstract "Superthin galaxies are bulgeless low surface brightness galaxies with unusually high major-to-minor axes ratio of the stellar disc, i.e.,$10<a/b<20$. We present Giant Metrewave Radio Telescope (GMRT) HI{} 21cm radio-synthesis observations of FGC 2366, the thinnest galaxy known with $a/b=21.6$. Employing the 3-D tilted-ring modelling using Fully Automated TiRiFiC (FAT), we determine the structure and kinematics of the HI{} gas disc, obtaining an asymptotic rotational velocity equal to 100 kms and a total HI{} mass equal to 10$^9 M_{odot}$. Using $z$-band stellar photometry, we obtain a central surface brightness of 22.8 mag ${rm{arcsec}}^{-2}$, a disc scale length of 2.6 kpc, and a scaleheight of 260 pc. Next, we determine the dark matter density profile by constructing a mass model and find that an NFW dark matter halo best fits the steeply-rising rotation curve. With the above mass inventory in place, we finally construct the dynamical model of the stellar disc of FGC 2366 using the stellar dynamical code AGAMA. To identify the key physical mechanisms responsible for the superthin vertical structure, we carry out a Principal Component Analysis of the data corresponding to all the relevant dynamical parameters and $a/b$ for a sample of superthin and extremely thin galaxies studied so far. We note that the first two principal components explain 80$%$ of the variation in the data, and the significant contribution is from the compactness of the mass distribution, which is fundamentally responsible for the existence of superthin stellar discs." @default.
- W4386228522 created "2023-08-29" @default.
- W4386228522 creator A5006954596 @default.
- W4386228522 creator A5014120737 @default.
- W4386228522 creator A5019853078 @default.
- W4386228522 creator A5064827821 @default.
- W4386228522 creator A5068360402 @default.
- W4386228522 creator A5074870771 @default.
- W4386228522 date "2023-08-25" @default.
- W4386228522 modified "2023-09-25" @default.
- W4386228522 title "HI{} 21cm observations and dynamical modelling of the thinnest galaxy: FGC 2366" @default.
- W4386228522 doi "https://doi.org/10.48550/arxiv.2308.13312" @default.
- W4386228522 hasPublicationYear "2023" @default.
- W4386228522 type Work @default.
- W4386228522 citedByCount "0" @default.
- W4386228522 crossrefType "posted-content" @default.
- W4386228522 hasAuthorship W4386228522A5006954596 @default.
- W4386228522 hasAuthorship W4386228522A5014120737 @default.
- W4386228522 hasAuthorship W4386228522A5019853078 @default.
- W4386228522 hasAuthorship W4386228522A5064827821 @default.
- W4386228522 hasAuthorship W4386228522A5068360402 @default.
- W4386228522 hasAuthorship W4386228522A5074870771 @default.
- W4386228522 hasBestOaLocation W43862285221 @default.
- W4386228522 hasConcept C121332964 @default.
- W4386228522 hasConcept C125857072 @default.
- W4386228522 hasConcept C159249277 @default.
- W4386228522 hasConcept C168589115 @default.
- W4386228522 hasConcept C184665706 @default.
- W4386228522 hasConcept C20249676 @default.
- W4386228522 hasConcept C206564472 @default.
- W4386228522 hasConcept C2780119159 @default.
- W4386228522 hasConcept C44870925 @default.
- W4386228522 hasConcept C91228026 @default.
- W4386228522 hasConcept C98444146 @default.
- W4386228522 hasConceptScore W4386228522C121332964 @default.
- W4386228522 hasConceptScore W4386228522C125857072 @default.
- W4386228522 hasConceptScore W4386228522C159249277 @default.
- W4386228522 hasConceptScore W4386228522C168589115 @default.
- W4386228522 hasConceptScore W4386228522C184665706 @default.
- W4386228522 hasConceptScore W4386228522C20249676 @default.
- W4386228522 hasConceptScore W4386228522C206564472 @default.
- W4386228522 hasConceptScore W4386228522C2780119159 @default.
- W4386228522 hasConceptScore W4386228522C44870925 @default.
- W4386228522 hasConceptScore W4386228522C91228026 @default.
- W4386228522 hasConceptScore W4386228522C98444146 @default.
- W4386228522 hasLocation W43862285221 @default.
- W4386228522 hasOpenAccess W4386228522 @default.
- W4386228522 hasPrimaryLocation W43862285221 @default.
- W4386228522 hasRelatedWork W2063027921 @default.
- W4386228522 hasRelatedWork W2328828381 @default.
- W4386228522 hasRelatedWork W2798600423 @default.
- W4386228522 hasRelatedWork W3102710178 @default.
- W4386228522 hasRelatedWork W3103395327 @default.
- W4386228522 hasRelatedWork W3103691827 @default.
- W4386228522 hasRelatedWork W3127081719 @default.
- W4386228522 hasRelatedWork W3169576610 @default.
- W4386228522 hasRelatedWork W4311991179 @default.
- W4386228522 hasRelatedWork W4313591799 @default.
- W4386228522 isParatext "false" @default.
- W4386228522 isRetracted "false" @default.
- W4386228522 workType "article" @default.