Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Hasan, S. N."'
In an earlier paper, we determined the morphological types of galaxies in the Coma Cluster using data from the HST/ACS Coma Cluster treasury survey. We found that of the 132 members, 51 are non dwarfs and 81 are dwarfs. We define dwarfs to have a abs
Externí odkaz:
http://arxiv.org/abs/2405.11175
In this paper, we apply the machine learning clustering algorithm Density Based Spatial Clustering of Applications with Noise (DBSCAN) to study the membership of stars in twelve open clusters (NGC~2264, NGC~2682, NGC~2244, NGC~3293, NGC~6913, NGC~714
Externí odkaz:
http://arxiv.org/abs/2404.10477
The unprecedented precision of Gaia has led to a paradigm shift in membership determination of open clusters where a variety of machine learning (ML) models can be employed. In this paper, we apply the unsupervised Gaussian Mixture Model (GMM) to a s
Externí odkaz:
http://arxiv.org/abs/2401.10802
In this paper we study the location and stability of the collinear Lagrangian points for the RTBP for the case in which one of the primary bodies is radiating and the other is oblate. We consider the effect of Poynting-Roberson drag and investigate h
Externí odkaz:
http://arxiv.org/abs/2312.05627
The Serpens Molecular Cloud is one of the most active sites of ongoing star formation at a distance of about 300 pc, and hence is very well-suited for studies of young low-mass stars and sub-stellar objects. In this paper, for the Serpens star formin
Externí odkaz:
http://arxiv.org/abs/2303.07752
In this paper we present the structural properties and morphology of galaxies in the central region of the Coma Cluster brighter than $19.5^m$ in the $F814W$ band. from the HST/ACS Coma Cluster Treasury Survey. Using mainly spectroscopic redshifts, w
Externí odkaz:
http://arxiv.org/abs/2111.11814
Autor:
Hasan, Priya, Hasan, S N
We shall present with examples how analysis of astronomy data can be used for an educational purpose to train students in methods of data analysis, statistics, programming skills and research problems. Special reference will be made to our IAU-OAD pr
Externí odkaz:
http://arxiv.org/abs/2104.10088
Autor:
Hasan, Priya, Hasan, S N
We shall describe the various activities done by us in Covid Times including outreach and educational workshops in Physics and Astronomy. We shall discuss the caveats in virtual teaching of Astronomy and the lessons learnt in the process.
Commen
Commen
Externí odkaz:
http://arxiv.org/abs/2104.06305
Membership of stars in open clusters is one of the most crucial parameters in studies of star clusters. Gaia opened a new window in the estimation of membership because of its unprecedented 6-D data. In the present study, we used published membership
Externí odkaz:
http://arxiv.org/abs/2103.05826
Dwarf galaxies constitute 18\% of the galaxies in the core of the Coma Cluster. We present the correlation between structural properties and morphology of galaxies in the central region of Coma Cluster for 221 objects within the apparent magnitude ra
Externí odkaz:
http://arxiv.org/abs/1810.00245