Record Details

Revisiting Some Pismis Open Clusters Using Gaia Environmental Technology

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Revisiting Some Pismis Open Clusters Using Gaia Environmental Technology
 
Creator A Al-Subaie, Amjad
Al-Johani, Amnah S
 
Subject Statistical methods
Open clusters and associations
Pismis open clusters
Distance equation
Kinematics and dynamics
Longitude of the vertex 􁈺𝑙􀬶􁈻.
 
Description 339-349
In this study, we considered the collective members of Pismis’s clusters located at identical distances r(pc) and
distributed around a mean absolute magnitude (Mo) following a Gaussian distribution with dispersion 􁈺σ􁈻. We computed the
distances rc(pc) of these clusters by applying a distance equation designed to account for Malmquist bias. Our computed
distances were in satisfactory agreement 􁈺~99%􁈻 when compared to previous research findings.
In the second part of our work, we delved extensively into the Pismis 3 cluster, which is rarely studied, aged, and
among the most affluent. We conducted analyses on its dynamical tidal radius 􁈺x􀭐 􀵌 r􀭲 􀵌 14.60 􀵇 1.26 pc􁈻, crossing time
􁈺T􀭡􀭰􀭭􀭱􀭱 􀵌 1.363 􀵇 0.014 Myr􁈻, relaxation time 􁈺T􀭰􀭣􀭪􀭟􀭶 􀵌 11.56 􀵇 3.40 Myr􁈻, and angular velocity 􁈺Ω􀭭 􀵌 0.024 􀵇 0.001km s􀬿􀬵􁈻.
A kinematic analysis of these open clusters was carried out, encompassing aspects such as their apex position
􁈺A􀭭, D􀭭􁈻 using the AD chart method, velocity ellipsoid parameters (VEPs), and the longitude of the vertex 􁈺𝑙􀬶􁈻 revealing a
minimal value, as anticipated when pointing exactly at the Galactic Center. Additionally, we explored their ages in relation
to evolution, linking them to formation mechanisms, metallicity, and opacity.
 
Date 2024-04-08T07:21:13Z
2024-04-08T07:21:13Z
2024-05
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/63704
https://doi.org/10.56042/ijpap.v62i5.7952
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.62(05) [May 2024]