The Correlation Between Fluxes of Balmer Emission Lines of H? and H? and Colors of a Galaxy in VNIR Region
Keywords:Galaxies, Line profiles, Balmer decrement., Spectra
We have studied the correlation between the flux and colors of a galaxy sample from SDSS, Data Release 13 as measured by the standard Balmer decrement technique in both visible and near-infrared region, covering the spectral region from (4500-8500) Ao.
We analyzed the spectral properties of the sample in the three (g, r, i) optical bands and found that the main sample tends to be redder which gives an indication that the sample has higher metallicity or older age.
We carried out the standard procedures IRAF software package to get a deeper insight into the flux in HÎ² and HÎ± wavelengths range.
We have concluded that the distribution of H- Beta and H- alpha line profiles is Gaussian in the two regions.
We found also a linear correlation between Balmer decrement (HÎ± /HÎ² ) in lognormal units and the rest frame colors of the sample with the best fit of 3.4764.
Mean and root means square (rms) profiles of HÎ² and HÎ± shows a maximum peak in the red region at the radial velocity of 1000km/s and the profiles were high symmetry in this region.
Chris Stoughton, R., Lupton, M., Michael R., B., Scott Burles, F., Castander, A., Connolly, D., E., Joshua, F., Hennessy, R., Hindsley, et. al., Sloan digital sky survey: Early data release, The Astronomical Journal, 123:485–548, 2002 January
Claus Leitherer and Daniela Calzetti, Ultraviolet spectra of star-forming galaxies with time-dependent dust obscuration, The Astrophysical Journal, 574:114–125, 2002
Brent Groves, Jarle Brinchmann1 , and Carl Jakob Walcher, The Balmer decrement of SDSS galaxies, astro-ph. CO, 2011
A.R. Thakar, A.S. Szalay, and J.V. Vandenberg, Data Organization in the SDSS Data Release 1, ASP Conference Series, Vol. 295, 2003
Alexander S. Szalay, J., Ani R. Thakar, P., Tanu Malik, J., Christopher Stoughton, J., The SDSS SkyServer – Public Access to the Sloan Digital Sky Server Data, ACM SIGMOD 2002 proceedings
Christy A. Tremonti, T., Guinevere Kauffmann, J., Ste´phane Charlot, S., Mark Seibert, E. David J., A. , Masataka Fukugita, J., The origin of the mass-metallicity relation: insight from 53,000 star-forming galaxies in the Sloan Digital Sky Survey, The Astrophysical Journal, 613:898–913, 2004
David J., Douglas P. and Marc Davis, Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds, The Astrophysical Journal, 500:525 553, 1998
Nikhil Padmanabhan, D., Douglas P., J., Michael R., H., James E., M., David W., Z. , David Johnston, S., et. al., An improved photometric calibration of the Sloan Digital Survey Data, The Astrophysical Journal, 674:1217Y1233, 2008
L. S. Sparke & J. S. Gallagher, 2007, Galaxies in the Universe: An Introduction, Second edition, Cambridge University Press
A. I. Shapovalova, L., A. N. Burenkov, V., D. Ilic´, A., W. Kollatschny, J., N., J. R. Valdes, J., J. Leon, A., et. al., Spectral optical monitoring of the narrow-line Seyfert 1 galaxy Ark 564, The Astrophysical Journal Supplement Series, 202:10 (22pp), 2012
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