Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Chanda J Jog"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 511:5878-5896
An $m=1$ lopsided asymmetry is common in disc galaxies. Here, we investigate the excitation of an $m=1$ lopsidedness in host galaxies during minor mergers while choosing a set of 1:10 merger models (with varying orbital configurations, morphology of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd86cbf38b652f36c6bb2f2618a1beff
https://doi.org/10.1093/mnras/stac461
https://doi.org/10.1093/mnras/stac461
Autor:
Chanda J. Jog, Suchira Sarkar
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:2523-2533
The vertical density distribution of stars in a galactic disc is traditionally obtained by assuming an isothermal vertical velocity dispersion of stars. Recent observations from SDSS, LAMOST, RAVE, Gaia etc show that this dispersion increases with he
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1259700c427cbc724b89a65115ea2920
https://doi.org/10.1093/mnras/staa2924
https://doi.org/10.1093/mnras/staa2924
Autor:
Chanda J. Jog, Suchira Sarkar
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 492:628-633
The self-consistent vertical density distribution in a thin, isothermal disc is typically given by a sech^2 law, as shown in the classic work by Spitzer (1942). This is obtained assuming that the radial and vertical motions are decoupled and only the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fd19e83cf6e6503821d53d1cbecd04b
https://doi.org/10.1093/mnras/stz3512
https://doi.org/10.1093/mnras/stz3512
Autor:
Chanda J. Jog, Narendra Nath Patra
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 488:4942-4951
We examine the H i total intensity maps of the VLA LITTLE-THINGS galaxies and identify an H i bar in the dwarf irregular galaxy DDO 168 which has a dense and compact dark matter halo that dominates at all radii. This is only the third galaxy found to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0bee98a6d0b594dfb326c0e08896139
https://doi.org/10.1093/mnras/stz2091
https://doi.org/10.1093/mnras/stz2091
Autor:
Suchira Sarkar, Chanda J. Jog
Publikováno v:
Astronomy & Astrophysics. 665:A23
We calculate ab initio the gravitational potential energy per unit area for a gravitationally coupled multi-component galactic disk of stars and gas, which is given as the integration over vertical density distribution, vertical gravitational force,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6eeffbc25a405dad2229e861de6a0082
https://doi.org/10.1051/0004-6361/202243184
https://doi.org/10.1051/0004-6361/202243184
Autor:
Soumavo Ghosh, Chanda J. Jog
A typical galactic disc has a finite thickness and in addition to stars it also contains a finite amount of interstellar gas. Here, we investigate the physical impact of the finite thickness of a galactic disc on the disc stability against the non-ax
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9697a7ade75c9687aad0b57503c15fd1
The study of gas-dust interactions occurring in the interstellar medium of a galaxy is essential for understanding various physical processes taking place within it. A comparison of such events at different locations corresponding to diverse astrophy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::678c464be79eb1df4263423cc30841ad
Autor:
Chanda J. Jog, Suchira Sarkar
Publikováno v:
Proceedings of the International Astronomical Union. 14:13-15
We study the vertical stellar distribution of the Milky Way thin disk treated as a gravitationally coupled system of stars, HI and H2 gas in the field of dark matter halo, from R = 4 to 22 kpc. We show that the gas and halo gravity mainly constrain t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f238932bed19656595d9e777cff3be5
https://doi.org/10.1017/s1743921319008019
https://doi.org/10.1017/s1743921319008019
Autor:
Chanda J. Jog, Suchira Sarkar
Publikováno v:
Astronomy & Astrophysics. 652:C1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6af992a5699b7793c6f7cc300204352c
https://doi.org/10.1051/0004-6361/201935430e
https://doi.org/10.1051/0004-6361/201935430e
Autor:
Soumavo Ghosh, Chanda J. Jog
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 459:4057-4065
In the density wave theory of spiral structure, the grand-design two-armed spiral pattern is taken to rotate rigidly in a galactic disc with a constant, definite pattern speed. The observational measurement of the pattern speed of the spiral arms, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ebb7fe1ab34aad1cd4d9dbd1e6b87a3
https://doi.org/10.1093/mnras/stw914
https://doi.org/10.1093/mnras/stw914