Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Goswami, Aruna"'
Autor:
Purandardas, Meenakshi, Goswami, Aruna
We present results from the analysis of 88 carbon stars selected from Hamburg/ESO (HES) survey using low-resolution spectra (R$\sim$1330 \& 2190). The spectra were obtained with the Himalayan Faint Object Spectrograph Camera (HFOSC) attached to the 2
Externí odkaz:
http://arxiv.org/abs/2401.04955
We present, for the first time, a detailed abundance analysis of the carbon star HE 1104$-$0957 based on high resolution (R${\sim}$ 50\,000) spectra. Our analysis shows that the object is an extremely metal-poor star with [Fe/H] $\sim$ $-$2.96. We fi
Externí odkaz:
http://arxiv.org/abs/2312.01769
The low-mass metal-poor stars in the Galaxy that preserve in their atmosphere, the chemical imprints of the gas clouds from which they were formed can be used as probes to get insight into the origin and evolution of elements in the early galaxy, ear
Externí odkaz:
http://arxiv.org/abs/2311.10043
Autor:
Goswami, Partha Pratim, Goswami, Aruna
The abundances of the slow neutron-capture (s-) process elements observed in barium stars can be explained by considering mass transfer in a binary system from an asymptotic giant branch (AGB) star onto a smaller mass and less evolved binary companio
Externí odkaz:
http://arxiv.org/abs/2311.10015
Autor:
Shejeelammal, J., Goswami, Aruna
Publikováno v:
2024MNRAS.527.2323S
The Carbon-Enhanced Metal-Poor (CEMP) stars with no enhancement of neutron-capture elements, the so-called CEMP-no stars are believed to be the direct descendants of first-generation stars and provide a unique opportunity to probe the early Galactic
Externí odkaz:
http://arxiv.org/abs/2311.09530
Autor:
Goswami, Aruna1 aruna@iiap.res.in
Publikováno v:
EPJ Web of Conferences. 6/27/2024, Vol. 297, p1-6. 6p.
Autor:
Panchal, Alaxender, Joshi, Y. C., De Cat, Peter, Lampens, Patricia, Goswami, Aruna, Tiwari, S. N.
The K2 eclipsing binary candidates EPIC 211982753 (hereinafter called EPIC2753) and EPIC 211915147 (hereinafter called EPIC5147) are characterized with the help of photometric and high-resolution spectroscopic data. The light curve analysis uses the
Externí odkaz:
http://arxiv.org/abs/2301.06125
Autor:
Goswami, Partha Pratim, Goswami, Aruna
We have performed detailed high-resolution spectroscopic analysis on seven metal-poor stars (BD+75 348, BD+09 3019, HD238020, HE0319-0215, HE0507-1653, HE0930-0018, HE1023-1504) and derived their atmospheric parameters T$_{eff}$, log$g$, [Fe/H], and
Externí odkaz:
http://arxiv.org/abs/2212.00834
Autor:
J., Shejeelammal, Goswami, Aruna
Publikováno v:
ApJ, 2022, Vol: 934, Page: 110
Elemental abundances of extrinsic carbon stars provide insight into the poorly understood origin and evolution of elements in the early Galaxy. In this work, we present the results of a detailed spectroscopic analysis of four potential carbon star ca
Externí odkaz:
http://arxiv.org/abs/2208.01258
Autor:
Purandardas, Meenakshi, Goswami, Aruna, Shejeelammal, J., Sonamben, Mayani, Pawar, Ganesh, Mkrtichian, David, Doddamani, Vijayakumar H., Joshi, Santosh
We present the results of the high-resolution (R$\sim$60,000) spectroscopic analysis of the star LAMOSTJ045019.27+394758.7 (hereafter J045) from the list of carbon stars of LAMOST DR2. From our analysis, we find that J045 does not exhibit the spectra
Externí odkaz:
http://arxiv.org/abs/2204.12099