Detalles de publicación

PP 024051

Deep HST imaging favors the bulgeless edge-on galaxy explanation for the hypothetical stellar wake created by a runaway supermassive black hole

Mireia Montes (1,2), Jorge Sánchez Almeida (1,2), Ignacio Trujillo (1,2)
(1) IAC, (2) Departamento de Astrofísica, Universidad de La Laguna
Abstract:A long linear structure recently discovered could be the stellar wake produced by the passage of a runaway supermassive black hole (SMBH) or, alternatively, a bulgeless edge-on galaxy. We report on new very deep HST imaging that seems to be in tension with the SMBH runaway scenario but is consistent with the bulgeless edge-on galaxy scenario. The new observations were aimed at detecting two key features expected in the SMBH scenario, namely, the bow shock formed where the SMBH meets the surrounding medium, and a counter stellar wake created by another binary SMBH hypothesized as part of the ejection mechanism. Neither of these two features appears to be present in the new images, as would be expected in the edge-on galaxy scenario.

Aceptado para publicación en RNAAS | Enviado el 2024-06-04 | Proyecto P/309201 P/302300