Abstract
I briefly describe a simple routine for emission-line profile fitting by Gaussian curves or Gauss–Hermite series. The profit (line-profile fitting) routine represent a new alternative for use in fits data cubes, as the ones from Integral Field Spectroscopy or Fabry–Pérot Interferometry, and may be useful to better study the emission-line flux distributions and gas kinematics in distinct astrophysical objects, such as the central regions of galaxies and star forming regions. The profit routine is written in IDL language and is available at http://www.ufsm.br/rogemar/software.html.
The profit routine was used to fit the [Fe ii] λ=1.257 μm emission-line profiles for about 1800 spectra of the inner 350 pc of the Seyfert galaxy Mrk 1066 obtained with Gemini NIFS and shows that the line profiles are better reproduced by Gauss–Hermite series than by the commonly used Gaussian curves. The two-dimensional map of the h 3 Gauss–Hermite moment shows its highest absolute values to be in regions close to the edge of the radio structure. These high values may be originating with an biconical outflowing gas associated with the radio jet—previously observed in the optical [O iii] emission. The analysis of this kinematic component indicates that the radio jet leaves the center of the galaxy with the north-west side slightly oriented towards us and the south-east side away from us, being partially hidden by the disc of the galaxy.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Barbosa, C.L., Blum, R.D., Conti, P.S., Damineli, A., Figuerêdo, E.: Astrophys. J. 678, 55 (2008)
Barbosa, F.K.B., Storchi-Bergmann, T., Cid Fernandes, R., Winge, C., Schmitt, H.: Mon. Not. R. Astron. Soc. 396, 2 (2009)
Beck, T.L., McGregor, P.J., Takami, M., Pyo, T.: Astrophys. J. 676, 472 (2008)
Blum, R.D., McGregor, Peter J.: Astron. J. 138, 489 (2009)
Bower, G., Wilson, A., Morse, J.A., Gelderman, R., Whitle, M., Mulchaey, J.: Astrophys. J. 454, 106 (1995)
Cappellari, M., Emsellem, E.: Publ. Astron. Soc. Pac. 116, 138 (2004)
Davies, R.I., Sánchez, F.M., Genzel, R., Tacconi, L.J., Hicks, E.K.S., Friedrich, S., Sternberg, A.: Astrophys. J. 671, 1388 (2007)
Davies, R.I., Maciejewski, W., Hicks, E.K.S., Tacconi, L.J., Genzel, R., Engel, H.: Astrophys. J. 702, 114 (2009)
Díaz, R.J., Dottori, H., Aguero, M.P., Mediavilla, E., Rodrigues, I., Mast, D.: Astrophys. J. 652, 1122 (2006)
Emsellem, E., et al.: Mon. Not. R. Astron. Soc. 379, 401 (2007)
Fathi, K., Storchi-Bergmann, T., Riffel, R.A., Winge, C., Axon, D.J., Robinson, A., Capetti, A., Marconi, A.: Astrophys. J. Lett. 641, L25 (2006)
Gerhard, O.E.: Mon. Not. R. Astron. Soc. 265, 213 (1993)
Komossa, S., Xu, D., Zhou, H., Storchi-Bergmann, T., Binette, L.: Astrophys. J. 680, 926 (2008)
Hicks, E.K.S., Davies, R.I., Malkan, M.A., Genzel, R., Tacconi, L.J., Sánchez, F.M., Sternberg, A.: Astrophys. J. 696, 448 (2009)
Knop, R.A., Armus, L., Matthews, K., Murphy, T.W., Soifer, B.T.: Astrophys. J. 122, 764 (2001)
McGregor, P., Dopita, M., Sutherland, R., Beck, T., Storchi-Bergmann, T.: Astrophys. Space Sci. 311, 223 (2007)
Moré, J.J., Garbow, B.S., Hillstrom, K.E.: User Guide for MINPACK1. Argonne Nat. Lab. Rep. ANL8074. Argonne National Laboratory, Argonne (1980)
Nagar, N.M., Wilson, A.S., Mulchaey, J.S., Gallimore, J.F.: Astrophys. J. Suppl. Ser. 120, 209 (1999)
Peletier, R.F., et al.: New Astron. 51, 29 (2007)
Rodrigues, I., Dottori, H., Díaz, R.J., Agüero, M.P., Mast, D.: Astron. J. 137, 4083 (2009)
Riffel, Rogemar A., Storchi-Bergmann, T., Winge, C., Barbosa, F.K.B.: Mon. Not. R. Astron. Soc. 373, 2 (2006)
Riffel, Rogemar A., Storchi-Bergmann, T., Winge, C., McGregor, P.J., Beck, T., Schmitt, H.: Mon. Not. R. Astron. Soc. 385, 1129 (2008)
Riffel, Rogemar A., Storchi-Bergmann, T., Dors, O.L., Winge, C.: Mon. Not. R. Astron. Soc. 393, 783 (2009a)
Riffel, Rogemar A., Storchi-Bergmann, T., McGregor, P.J.: Astrophys. J. 698, 1767 (2009b)
Riffel, Rogemar A., Storchi-Bergmann, T., Nagar, N.M.: Mon. Not. R. Astron. Soc. (2010, accepted) arXiv:1001.0130
Riffel, Rogemar A., Storchi-Bergmann, T.: Mon. Not. R. Astron. Soc. (2010, submitted)
Sarzi, M., et al.: Mon. Not. R. Astron. Soc. 366, 1151 (2006)
Steiner, J.E., Menezes, R.B., Ricci, T.V., Oliveira, A.S.: Mon. Not. R. Astron. Soc. 395, 64 (2009)
Storchi-Bergmann, T., Dors, O., Jr. , Riffel, R.A., Fathi, K., Axon, D.J., Robinson, A.: Astrophys. J. (2007)
Storchi-Bergmann, T., McGregor, P., Riffel, Rogemar A., Simões Lopes, R., Beck, T., Dopita, M.: Mon. Not. R. Astron. Soc. 394, 1148 (2009)
Storchi-Bergmann, T., Simões Lopes, R., McGregor, P., Riffel, Rogemar A., Beck, T., Dopita, M.: Mon. Not. R. Astron. Soc. 402, 819 (2010)
Takami, M., Beck, T.L., Pyo, T., McGregor, P., Davis, C.: Astrophys. J. 670, 37 (2007)
van der Marel, R.P., Franx, M.: Astrophys. J. 407, 525 (1993)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Riffel, R.A. profit: a new alternative for emission-line profile fitting. Astrophys Space Sci 327, 239–244 (2010). https://doi.org/10.1007/s10509-010-0317-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10509-010-0317-y