%0 Generic %1 sales2019gemini %A Sales, Dinalva A. %A Robinson, A. %A Riffel, R. A. %A Storchi-Bergmann, T. %A Gallimore, J. F. %A Kharb, P. %A Baum, S. %A O'Dea, C. %A Hekatelyne, C. %A Ferrari, F. %D 2019 %K SFR maser merger %T Gemini IFU, VLA, and HST observation of the OH Megamaser Galaxy IRAS17526+3253 %U http://arxiv.org/abs/1903.04729 %X We present a multiwavelength study of the OH megamaser galaxy (OHMG) IRAS17526+3253, based on new Gemini Multi-Object Spectrograph Integral Field Unit (GMOS/IFU) observations, Hubble Space Telescope F814W and H$\alpha$+N\sc ii images, and archival 2MASS and 1.49GHz VLA data. The HST images clearly reveal a mid-to-advanced stage major merger whose northwestern and southeastern nuclei have a projected separation of $\sim$8.5kpc. Our HST/H$\alpha$+N\sc ii image shows regions of ongoing star-formation across the envelope on $\sim$10kpc scales, which are aligned with radio features, supporting the interpretation that the radio emission originates from star-forming regions. The measured H$\alpha$ luminosities imply that the unobscured star-formation rate is $\sim$10-30\,M$_ødot$yr$^-1$. The GMOS/IFU data reveal two structures in northwestern separated by 850\,pc and by a discontinuity in the velocity field of $\sim$~200~km~s$^-1$. We associate the blue-shifted and red-shifted components with, respectively, the distorted disk of northwestern and tidal debris, possibly a tail originating in southeastern. Star-formation is the main ionization source in both components, which have SFRs of $\sim$2.6-7.9\,M$_ødot$yr$^-1$ and $\sim$1.5-4.5\,M$_ødot$yr$^-1$, respectively. Fainter line emission bordering these main components is consistent with shock ionization at a velocity $\sim$200~km~s$^-1$ and may be the result of an interaction between the tidal tail and the northwestern galaxy's disk. IRAS17526+3253 is one of only a few systems known to host both luminous OH and H$_2$O masers. The velocities of the OH and H$_2$O maser lines suggest that they are associated with the northwestern and southeastern galaxies, respectively.

@misc{sales2019gemini, abstract = {We present a multiwavelength study of the OH megamaser galaxy (OHMG) IRAS17526+3253, based on new Gemini Multi-Object Spectrograph Integral Field Unit (GMOS/IFU) observations, Hubble Space Telescope F814W and H$\alpha$+[N{\sc ii}] images, and archival 2MASS and 1.49GHz VLA data. The HST images clearly reveal a mid-to-advanced stage major merger whose northwestern and southeastern nuclei have a projected separation of $\sim$8.5kpc. Our HST/H$\alpha$+[N{\sc ii}] image shows regions of ongoing star-formation across the envelope on $\sim$10kpc scales, which are aligned with radio features, supporting the interpretation that the radio emission originates from star-forming regions. The measured H$\alpha$ luminosities imply that the unobscured star-formation rate is $\sim$10-30\,M$_{\odot}$yr$^{-1}$. The GMOS/IFU data reveal two structures in northwestern separated by 850\,pc and by a discontinuity in the velocity field of $\sim$~200~km~s$^{-1}$. We associate the blue-shifted and red-shifted components with, respectively, the distorted disk of northwestern and tidal debris, possibly a tail originating in southeastern. Star-formation is the main ionization source in both components, which have SFRs of $\sim$2.6-7.9\,M$_{\odot}$yr$^{-1}$ and $\sim$1.5-4.5\,M$_{\odot}$yr$^{-1}$, respectively. Fainter line emission bordering these main components is consistent with shock ionization at a velocity $\sim$200~km~s$^{-1}$ and may be the result of an interaction between the tidal tail and the northwestern galaxy's disk. IRAS17526+3253 is one of only a few systems known to host both luminous OH and H$_{2}$O masers. The velocities of the OH and H$_{2}$O maser lines suggest that they are associated with the northwestern and southeastern galaxies, respectively.}, added-at = {2019-03-13T15:21:26.000+0100}, author = {Sales, Dinalva A. and Robinson, A. and Riffel, R. A. and Storchi-Bergmann, T. and Gallimore, J. F. and Kharb, P. and Baum, S. and O'Dea, C. and Hekatelyne, C. and Ferrari, F.}, biburl = {https://www.bibsonomy.org/bibtex/26d65eff875e6dc40289befc82ac9ed4d/heh15}, description = {Gemini IFU, VLA, and HST observation of the OH Megamaser Galaxy IRAS17526 3253}, interhash = {91593ae27a452a8e9903d2a460147d58}, intrahash = {6d65eff875e6dc40289befc82ac9ed4d}, keywords = {SFR maser merger}, note = {cite arxiv:1903.04729Comment: 19 pages, 13 figures, 3 tables, Accepted for publication in MNRAS}, timestamp = {2019-03-13T15:21:26.000+0100}, title = {Gemini IFU, VLA, and HST observation of the OH Megamaser Galaxy IRAS17526+3253}, url = {http://arxiv.org/abs/1903.04729}, year = 2019 }