32 citations · 131 across the 12 of their papers we have counts for
12 papers
A New Age-Activity Relation For Solar Analogs that Accounts for Metallicity
Gabriela Carvalho-Silva, Jorge Meléndez, Anne Rathsam +5
Determining stellar ages is challenging, particularly for cooler main-sequence stars. Magnetic evolution offers an observational alternative for age estimation via the age-chromosp…
The [Y/Mg] chemical clock in the Galactic Disk: The influence of metallicity and Galactic population in the solar neighbourhood
J. Shejeelammal, Jorge Meléndez, Anne Rathsam +1
Stellar ages are an important parameter to study the chemical evolution of the Galaxy. In recent years, several studies have established the existence of a relationship between che…
On the potential of Carbon-Enhanced Metal-Poor stars for Galactic Archaeology
Aruna Goswami, J Shejeelammal, Partha Pratim Goswami +1
The low-mass metal-poor stars in the Galaxy that preserve in their atmosphere, the chemical imprints of the gas clouds from which they were formed can be used as probes to get insi…
Chemodynamical study of two CEMP-no stars from the Hamburg/ESO Survey
J. Shejeelammal, Aruna Goswami
The Carbon-Enhanced Metal-Poor (CEMP) stars with no enhancement of neutron-capture elements, the so-called CEMP-no stars are believed to be the direct descendants of first-generati…
Spectroscopic study of four metal-poor carbon stars from the Hamburg/ESO Survey: On confirming the low-mass nature of their companions
Shejeelammal J., Aruna Goswami
Elemental abundances of extrinsic carbon stars provide insight into the poorly understood origin and evolution of elements in the early Galaxy. In this work, we present the results…
LAMOST J045019.27+394758.7, with peculiar abundances of N, Na, V, Zn, is possibly a Sculptor dwarf galaxy escapee
Meenakshi Purandardas, Aruna Goswami, J. Shejeelammal +5
We present the results of the high-resolution (R60,000) spectroscopic analysis of the star LAMOSTJ045019.27+394758.7 (hereafter J045) from the list of carbon stars of LAMOST…
Probing the nucleosynthetic contribution of low-metallicity, low-mass star companions of CEMP stars
J. Shejeelammal, Aruna Goswami
The observed abundance diversities among the CEMP stars can shed light on the formation and evolution of elements in the early Galaxy. In this work, we present results obtained fro…
HCT/HESP study of two carbon stars from the LAMOST survey
J. Shejeelammal, Aruna Goswami, Jianrong Shi
Carbon stars, enhanced in carbon and neutron-capture elements, provide wealth of information about the nucleosynthesis history of the Galaxy. In this work, we present the first eve…
[Rb/Zr] ratio in Ba stars as diagnostics of the companion AGB stellar mass
J. Shejeelammal, Aruna Goswami
Understanding the nucleosynthesis and evolution of Asymptotic Giant Branch (AGB) stars is of primary importance as they are the main producers of some of the key elements in the Un…
Characterizing the companion AGBs using surface chemical composition of barium stars
J. Shejeelammal, Aruna Goswami, Partha Pratim Goswami +2
Barium stars are one of the important probes to understand the origin and evolution of slow neutron-capture process elements in the Galaxy. These are extrinsic stars, where the obs…
Chemical analysis of CH stars - III: Atmospheric parameters and elemental abundances
Meenakshi Purandardas, Aruna Goswami, Partha Pratim Goswami +2
Elemental abundances of CH stars can provide observational constraints for theoretical studies on the nucleosynthesis and evolution of low- and intermediate-mass stars. However, av…
Evolution of entropic dark energy and its phantom nature
Titus K. Mathew, Chinthak Murali, Shejeelammal J
Assuming the form of the entropic dark energy as arises form the surface term in the Einstein-Hilbert's action, it's evolution were analyzed in an expanding flat universe. The mode…