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Newly detected H2O Masers in Seyfert and Starburst Galaxies

Published online by Cambridge University Press:  30 March 2016

A. B. Peck ,
A. Tarchi ,
C. Henkel ,
N. M. Nagar ,
J. Braatz  and
L. Moscadelli
A. B. Peck
Affiliation:
Harvard-Smithsonian CfA, SMA Project, PO Box 824, Hilo, HI 96721
A. Tarchi
Affiliation:
Istituto di Radioastronomia, CNR, Via Gobetti 101, 40129Bologna Osservatorio Astronomico di Cagliari, Loc. Poggio dei Pini, Strada 54, 09012 Capoterra (CA), Italy
C. Henkel
Affiliation:
MPIfR, Auf dem Hügel 69, D-53121 Bonn, Germany
N. M. Nagar
Affiliation:
Kapteyn Institute, University of Groningen, Landleven 12, 9747 AD Groningen, Netherlands
J. Braatz
Affiliation:
NRAO, PO Box 2, Green Bank, WV 24944
L. Moscadelli
Affiliation:
Osservatorio Astronomico di Cagliari, Loc. Poggio dei Pini, Strada 54, 09012 Capoterra (CA), Italy

Abstract

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We report new detections of three H2O megamasers and one kilomaser using the Effelsberg 100-m telescope. Isotropic luminosities are ~50, 300, 1, and 230 L⊙ for Mrk 1066, Mrk 34, NGC 3556, and Arp 299, respectively. Mrk 34 contains the most distant H2O megamaser ever detected in a Seyfert. Our targets in this survey were chosen to fit one of the following criteria: 1) to have a high probability of interaction between the radio jet and the ISM within the central few parsecs of the radio galaxy, yielding masers which arise in local molecular clouds; or 2) to have very bright IRAS sources in which massive star forming regions might yield powerful masers. The ‘jet maser’ sources can provide detailed information about the conditions in the ISM in the central 1-10 pc of AGN. The extra-galactic ‘star formation masers’ can be used to pinpoint and characterize locations of high mass star formation in nearby galaxies. In addition, these sources will help to provide a better understanding of the chemical properties of molecular clouds in extra-galactic systems.

Type
I. Joint Discussions
Information
Highlights of Astronomy , Volume 13 , 2005 , pp. 851 - 853
Copyright
Copyright © Astronomical Society of Pacific 2005

References

Claussen, M. J., Diamond, P. J., Braatz, J. A., et al. 1998, ApJL, 500, 129 Google Scholar
Gallimore, J. F., Baum, S. A., O’Dea, C. P., et al. 1996, ApJ, 462, 740 Google Scholar
Greenhill, L. J., Moran, J. M., Booth, , et al. 2001, in IAU Symposium 205, Galaxies and Their Constituents at the Highest Angular Resolution, ed. Schilizzi, R. Vogel, S. Paresce, F. & Elvis, M. (San Francisco: ASP), 334 Google Scholar
Greenhill, L. J., Moran, J.M., Reid, M.J., et al. 1993, ApJ, 406, 482 Google Scholar
Miyoshi, M., Moran, J., et al. 1995, Nature, 373, 127 Google Scholar
Peck, A.B., Henkel, C., Ulvestad, J.S., et al. 2003, ApJ, 590, 149 Google Scholar
Tarchi, A., Henkel, C., Peck, A.B. & Menten, K. M. 2002a, A&A, 385, 1049 Google Scholar
Tarchi, A., Henkel, C., Peck, A.B. & Menten, K.M. 2002b, A&A, 389, L39 Google Scholar