X-Ray Photons in the CO 2-1 Lacuna of NGC 2110

X-Ray Photons in the CO 2-1 Lacuna of NGC 2110Fabbiano, GiuseppinaPaggi, A.Elvis, MartinDOI: info:10.3847/2041-8213/ab1c63v. 876L18
Fabbiano, Giuseppina, Paggi, A., and Elvis, Martin. 2019. "X-Ray Photons in the CO 2-1 "Lacuna" of NGC 2110." The Astrophysical Journal 876:L18. https://doi.org/10.3847/2041-8213/ab1c63
ID: 155158
Type: article
Authors: Fabbiano, Giuseppina; Paggi, A.; Elvis, Martin
Abstract: A recent Atacama Large Millimeter/submillimeter Array study of the Seyfert 2 active galactic nucleus (AGN) NGC 2110 by Rosario et al. has reported a remarkable lack of CO 2-1 emission from the circumnuclear region, where optical lines and H2 emission are observed, leading to the suggestion of excitation of the molecular clouds by the AGN. As interaction with X-ray photons could be the cause of this excitation, we have searched the archival Chandra data for corroborating evidence. We report the discovery of an extra-nuclear ∼1″ (∼170 pc) feature in the soft ( emission are observed, leading to the suggestion of excitation of the molecular clouds by the AGN. As interaction with X-ray photons could be the cause of this excitation, we have searched the archival Chandra data for corroborating evidence. We report the discovery of an extra-nuclear ∼1″ (∼170 pc) feature in the soft (2 emission in this region, which is devoid of CO 2-1 emission. The Chandra image completes the emerging picture of a multiphase circumnuclear medium excited by the X-rays from the AGN, with dense warm molecular clouds emitting in H2 but depleted of CO 2-1 line emission.