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The intriguing case of Was 49b

Published online by Cambridge University Press:  29 March 2021

Henrique R. Schmitt Open the ORCID record for Henrique R. Schmitt [Opens in a new window] ,
Nathan J. Secrest ,
Laura Blecha ,
Barry Rothberg Open the ORCID record for Barry Rothberg [Opens in a new window]  and
Jacqueline Fischer
Henrique R. Schmitt
Affiliation:
Remote Sensing Division, Naval Reseearch Laboratory, 4555 Overlook Ave. NW, Washington DC-20375, USA email: henrique.schmitt@nrl.navy.mil
Nathan J. Secrest
Affiliation:
U.S. Naval Observatory, 3450 Massachusetts Ave. NW, Washington, DC20392, USA
Laura Blecha
Affiliation:
Dept. of Physics, University of Florida, P.O. Box 118440, Gainesville, FL32611, USA
Barry Rothberg
Affiliation:
LBT Observatory, University of Arizona, 933 N. Cherry Ave., Tucson AZ85721, USA Dept. of Physcis and Astronomy, George Mason University, MS3F3, 4400 University Drive, Fairfax, VA22030, USA
Jacqueline Fischer
Affiliation:
Dept. of Physcis and Astronomy, George Mason University, MS3F3, 4400 University Drive, Fairfax, VA22030, USA
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Abstract

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We present results of a multiwavelength study of the isolated dual AGN system Was 49. Observations show that the dominant component in this interacting system, Was 49a, is a spiral galaxy, while Was 49b is hosted in a dwarf galaxy located at 8 kpc from the nucleus of Was 49a, at the edge of its disk. The intriguing fact about this system is the luminosity of their corresponding AGNs. While Was 49a hosts a low luminosity Seyfert 2 with Lbol˜1043 erg s–1, Was 49b has a Seyfert 2 with Lbol ˜ 1045 erg s–1, in the luminosity range of Quasars. Furthermore, estimates of the black hole and host galaxy masses of Was 49b indicate a black hole significantly more massive than one would expect from scaling relations. This result is in contrast with findings that the most luminous merger-triggered AGNs are found in major mergers and that minor mergers predominantly enhance AGN activity in the primary galaxy.

Keywords

galaxies: activegalaxies: bulgesgalaxies: dwarfgalaxies: interactionsgalaxies: nucleigalaxies: Seyfert
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 153 - 157
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

References

Bell, E. F., et al. 2003, ApJS, 149, 289 CrossRefGoogle Scholar
Blanton, M. R. & Moustakas, J. 2009, ARA&A, 47, 159 Google Scholar
Blecha, L., et al. 2011, MNRAS, 412, 2154 CrossRefGoogle Scholar
Bothun, G. D., Schmitz, M., Halpern, J. P., et al. 1989, ApJS, 70, 271 CrossRefGoogle Scholar
Callegari, S., et al. 2011, ApJ, 729, 85 CrossRefGoogle Scholar
Capelo, P. R., et al. 2015, MNRAS, 477, 2123 CrossRefGoogle Scholar
Ellison, S. L., et al. 2011, MNRAS,418, 2043 CrossRefGoogle Scholar
Gebhardt, K., et al. 2000, ApJ, 539, L13 CrossRefGoogle Scholar
Jahnke, K. & Macciò, A. V. 2011 ApJ, 734, 92 CrossRefGoogle Scholar
Kaspi, S., et al. 2005, ApJ, 629, 61 CrossRefGoogle Scholar
Lupton, R., et al. 2004, PASP, 116, 133 CrossRefGoogle Scholar
Magorrian, J., et al. 1998, AJ, 115, 2285 CrossRefGoogle Scholar
McConnell, N. J. & Ma, C.-P. 2013, ApJ, 764, 184 CrossRefGoogle Scholar
Meléndez, M., et al. 2008, ApJ, 682, 94 CrossRefGoogle Scholar
Moran, E. C., Halpern, J. P., Bothun, G. D., et al. 1992, AJ, 104, 990 CrossRefGoogle Scholar
Peng, E. Y., Ho, L. C., Impey, C. D., et al. 2002, AJ, 124, 266 CrossRefGoogle Scholar
Secrest, N. J., Schmitt, H. R., Blecha, L., et al. 2017, ApJ, 836, 183 CrossRefGoogle Scholar
Tran, H. D. 1995, ApJ, 440, 565 CrossRefGoogle Scholar
Tran, H. D. 1995, ApJ, 440, 578 CrossRefGoogle Scholar
Volonteri, M., et al. 2016, MNRAS, 460, 2979 CrossRefGoogle Scholar
Winter, L. M., et al. 2012 2012, ApJ, 745, 107 CrossRefGoogle Scholar