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1860797976701566976
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INTELEK Repository
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Online Access
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| collectionurl |
https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection407072
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| date |
2024-08-30 11:17:05
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| format |
Restricted Document
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15228
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UniSZA
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| internalnotes |
Bevington, P.R. & Robinson, D.K. 1969. Data Reduction and Error Analysis for the Physical Sciences. vol. 2. New York: McGraw-Hill. Binney, J. & Tremaine, S. 2011. Galactic Dynamics. New Jersey: Princeton University Press. Burkert, A. 1995. The structure of dark matter halos in dwarf galaxies. The Astrophysical Journal Letters 447(1): L25. Cannon, J.M., Haynes, K., Most, H., Salzer, J.J., Haugland, K., Scudder, J., Sugden, A. & Weindling, J. 2010. The stellar and gaseous contents of the Orion dwarf galaxy. The Astronomical Journal 139(6): 2170. Carignan, C. & Beaulieu, S. 1989. Optical and HI studies of the ‘gas-rich’ dwarf irregular galaxy ddo 154. The Astrophysical Journal 347: 760-770. Côté, S., Carignan, C. & Freeman, K.C. 2000. The various kinematics of dwarf irregular galaxies in nearby groups and their dark matter distributions. The Astronomical Journal 120(6): 3027. Freeman, K.C. 1970. On the disks of spiral and so galaxies. The Astrophysical Journal 160: 811. Frusciante, N., Salucci, P., Vernieri, D., Cannon, J.M. & Elson, E.C. 2012. The distribution of mass in the Orion dwarf galaxy. Monthly Notices of the Royal Astronomical Society 426(1): 751-757. Gentile, G., Salucci, P., Klein, U. & Granato, G.L. 2007. NGC 3741: The dark halo profile from the most extended rotation curve. Monthly Notices of the Royal Astronomical Society 375(1): 199-212. Hashim, N., Salucci, P. & Abidin, Z.Z. 2013. The study of rotation curve with Mond for Eso138-G014. Paper presented at the AIP Conference Proceedings. Longair, M.S. 2008. Galaxy Formation. Berlin: Springer-Verlag. Navarro, J.F., Frenk, C.S. & White, S.D.M. 1996. The structure of cold dark matter halos. The Astrophysical Journal 462: 563. Navarro, J.F., Frenk, C.S. & White, S.D.M. 1997. A universal density profile from hierarchical clustering. The Astrophysical Journal 490(2): 493-508. Vaduvescu, O., McCall, M.L., Richer, M.G. & Fingerhut, R.L. 2005. Infrared properties of star-forming dwarf galaxies. I. dwarf irregular galaxies in the local volume. The Astronomical Journal 130(4): 1593. Weldrake, D.T.F., De Blok, W.J.G. & Walter, F. 2003. A high-resolution rotation curve of NGC 6822: A test-case for cold dark matter. Monthly Notices of the Royal Astronomical Society 340(1): 12-28.
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6009-01-FH02-ESERI-15-03264.pdf
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Adobe Acrobat Pro DC 20.6.20042
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oai_dc
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https://intelek.unisza.edu.my/intelek/pages/view.php?ref=15228
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15228 https://intelek.unisza.edu.my/intelek/pages/view.php?ref=15228 https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection407072 Restricted Document Article Journal application/pdf 7 Adobe Acrobat Pro DC 20 Paper Capture Plug-in with ClearScan 1.6 Adobe Acrobat Pro DC 20.6.20042 2024-08-30 11:17:05 6009-01-FH02-ESERI-15-03264.pdf Universiti Kebangsaan Malaysia UniSZA Private Access The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral Sains Malaysiana The basis of the nonlinear least square fitting is to fit the nonlinear rotation curve model with the observed rotation curve of the Orion dwarf galaxy. It has been the most powerful tool to study the distribution of dark matter in galaxies where it is used to obtain the proper mass model of a galaxy. In this paper, we present the rotation curve fit of Orion dwarf galaxy, corrected for asymmetric drift by using the gradient method of nonlinear least square. Our results showed an excellent agreement between the mass models of cored halo profile with the observed rotation curve. Thus, we can estimate the value of disk mass, MD; the core radius, r0 and core density, ro of the galaxy with 1-s of uncertainty. We finally indicated the dark matter halo distribution as cored dark matter halo with density, 3.9 × 106 MŸ kpc-3. 44 3 Universiti Kebangsaan Malaysia Universiti Kebangsaan Malaysia 457-462 Bevington, P.R. & Robinson, D.K. 1969. Data Reduction and Error Analysis for the Physical Sciences. vol. 2. New York: McGraw-Hill. Binney, J. & Tremaine, S. 2011. Galactic Dynamics. New Jersey: Princeton University Press. Burkert, A. 1995. The structure of dark matter halos in dwarf galaxies. The Astrophysical Journal Letters 447(1): L25. Cannon, J.M., Haynes, K., Most, H., Salzer, J.J., Haugland, K., Scudder, J., Sugden, A. & Weindling, J. 2010. The stellar and gaseous contents of the Orion dwarf galaxy. The Astronomical Journal 139(6): 2170. Carignan, C. & Beaulieu, S. 1989. Optical and HI studies of the ‘gas-rich’ dwarf irregular galaxy ddo 154. The Astrophysical Journal 347: 760-770. Côté, S., Carignan, C. & Freeman, K.C. 2000. The various kinematics of dwarf irregular galaxies in nearby groups and their dark matter distributions. The Astronomical Journal 120(6): 3027. Freeman, K.C. 1970. On the disks of spiral and so galaxies. The Astrophysical Journal 160: 811. Frusciante, N., Salucci, P., Vernieri, D., Cannon, J.M. & Elson, E.C. 2012. The distribution of mass in the Orion dwarf galaxy. Monthly Notices of the Royal Astronomical Society 426(1): 751-757. Gentile, G., Salucci, P., Klein, U. & Granato, G.L. 2007. NGC 3741: The dark halo profile from the most extended rotation curve. Monthly Notices of the Royal Astronomical Society 375(1): 199-212. Hashim, N., Salucci, P. & Abidin, Z.Z. 2013. The study of rotation curve with Mond for Eso138-G014. Paper presented at the AIP Conference Proceedings. Longair, M.S. 2008. Galaxy Formation. Berlin: Springer-Verlag. Navarro, J.F., Frenk, C.S. & White, S.D.M. 1996. The structure of cold dark matter halos. The Astrophysical Journal 462: 563. Navarro, J.F., Frenk, C.S. & White, S.D.M. 1997. A universal density profile from hierarchical clustering. The Astrophysical Journal 490(2): 493-508. Vaduvescu, O., McCall, M.L., Richer, M.G. & Fingerhut, R.L. 2005. Infrared properties of star-forming dwarf galaxies. I. dwarf irregular galaxies in the local volume. The Astronomical Journal 130(4): 1593. Weldrake, D.T.F., De Blok, W.J.G. & Walter, F. 2003. A high-resolution rotation curve of NGC 6822: A test-case for cold dark matter. Monthly Notices of the Royal Astronomical Society 340(1): 12-28.
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| spellingShingle |
The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral
|
| summary |
The basis of the nonlinear least square fitting is to fit the nonlinear rotation curve model with the observed rotation curve of the Orion dwarf galaxy. It has been the most powerful tool to study the distribution of dark matter in galaxies where it is used to obtain the proper mass model of a galaxy. In this paper, we present the rotation curve fit of Orion dwarf galaxy, corrected for asymmetric drift by using the gradient method of nonlinear least square. Our results showed an excellent agreement between the mass models of cored halo profile with the observed rotation curve. Thus, we can estimate the value of disk mass, MD; the core radius, r0 and core density, ro of the galaxy with 1-s of uncertainty. We finally indicated the dark matter halo distribution as cored dark matter halo with density, 3.9 × 106 MŸ kpc-3.
|
| title |
The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral
|
| title_full |
The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral
|
| title_fullStr |
The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral
|
| title_full_unstemmed |
The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral
|
| title_short |
The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral
|
| title_sort |
nonlinear least square fitting for rotation curve of orion dwarf spiral
|