Zobrazeno 1 - 10
of 18
pro vyhledávání: '"B. P. Hema"'
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 312 (2024)
Determining the He/H ratio in cool stars presents a fundamental astrophysical challenge. While this ratio is established for hot O and B stars, its extrapolation to cool stars remains uncertain due to the absence of helium lines in their observed spe
Externí odkaz:
https://doaj.org/article/cfdf927bec4f4e5f8e2566d04d3ca985
The helium-enriched (He-enriched) metal-rich red giants of Omega Centauri, discovered by Hema and Pandey using the low-resolution spectra from the Vainu Bappu Telescope (VBT) and confirmed by the analyses of the high-resolution spectra obtained from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::025ca8a9ab229b065127ed1c00cf2d81
http://arxiv.org/abs/2005.06807
http://arxiv.org/abs/2005.06807
Autor:
B. P. Hema, Gajendra Pandey
In this work, the helium-enhancement (He-enhancement) in the lithium-rich (Li-rich) K-giant HD 77361 is investigated using the strengths of the MgH band and the MgI lines. The detailed abundance analysis and also the synthesis of the MgH band and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec7841919a8a17ce9aba40e13e68b8aa
Autor:
Gajendra Pandey, E. Semenko, Santosh Joshi, David Mkrtichian, N. K. Chakradhari, J. M. Nemec, L. A. Balona, B. P. Hema, Yogesh C. Joshi, C. A. Engelbrecht, Kaushal Sharma
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 460:1318-1327
The hot $\gamma$~Doradus stars have multiple low frequencies characteristic of $\gamma$~Dor or SPB variables, but are located between the red edge of the SPB and the blue edge of the $\gamma$~Dor instability strips where all low-frequency modes are s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b51782da4b9ff386cbceb852219accf
https://doi.org/10.1093/mnras/stw1038
https://doi.org/10.1093/mnras/stw1038
Autor:
Vincent M. Woolf, Gajendra Pandey, Devika Kamath, N. Kameswara Rao, David L. Lambert, B. P. Hema
Abundance analyses of the two newly discovered R Coronae Borealis (RCB) stars ASAS-RCB-8 and ASAS-RCB-10 were conducted using high-resolution optical spectra and model atmospheres. Their chemical compositions place the pair among the majority class o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f03588b73269eeaf81aa805ee7dee630
http://arxiv.org/abs/1707.01268
http://arxiv.org/abs/1707.01268
Publikováno v:
Publications of the Astronomical Society of the Pacific. 126:813-820
High-resolution optical spectra of the R Coronae Borealis (RCB) star V532 Oph at light maximum are discussed. The absolute visual magnitude MV of the star is found to be -4.9 ± 0.5. The elemental abundances suggest the star belongs to the majority c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::225c6dc5747cd0f4c1300e21034c75a9
https://doi.org/10.1086/678129
https://doi.org/10.1086/678129
Publikováno v:
The Astrophysical Journal. 864:121
High-resolution optical spectra are analyzed for two of the four metal rich mildly hydrogen-poor or helium-enhanced giants discovered by Hema and Pandey (2014) along with their comparison normal (hydrogen-rich) giants of Omega Cen. The strengths of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::607711d1f322aa0b543c3e2d3cac430d
https://doi.org/10.3847/1538-4357/aad696
https://doi.org/10.3847/1538-4357/aad696
Autor:
Hosakatte Niranjana Murthy, B. P. Hema
Publikováno v:
Biologia plantarum. 52:121-125
The effects of amino acids (arginine, aspargine, cysteine, glutamine, glycine and proline) and polyamines (putrescine and spermidine) on embryogenesis and plant regeneration from cultured anthers of Guizotia abyssinica (L. f.) Cass. cv. Ootacamund wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d494ec5b51d549584742557c209b576
https://doi.org/10.1007/s10535-008-0024-5
https://doi.org/10.1007/s10535-008-0024-5
Autor:
B. P. Hema, Hosakatte Niranjana Murthy
Publikováno v:
Biologia plantarum. 51:773-776
The influence of different sugars (sucrose, maltose, glucose and fructose, 0.05–0.5 M) on embryogenesis and plant regeneration from cultured anthers of niger [Guizotia abyssinica (L. f.) Cass.] have been studied. Among the different sugars tested,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8686b5ffffce55cc399c78565d457979
https://doi.org/10.1007/s10535-007-0158-x
https://doi.org/10.1007/s10535-007-0158-x
Autor:
Eun-Joo Hahn, Kee-Yoeup Paek, B. P. Hema, A. Nayeem, L. V. Hiregoudar, J. G. Bhat, Hosakatte Niranjana Murthy
Publikováno v:
Biologia plantarum. 50:291-294
This report describes in vitro shoot induction and plant regeneration from mature nodal explants of Vitex trifolia L. on Murashige and Skoog (MS) medium fortified with benzylaminopurine (BAP), kinetin (KN), thidiazuron (TDZ), adenine (ADE), and 2-iso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c82fc57e8ab080f706f0016b30e875d7
https://doi.org/10.1007/s10535-006-0023-3
https://doi.org/10.1007/s10535-006-0023-3