Discovery of planetary nebulae in NGC 4214 using SITELLE

Sebastien Vicens-Mouret; Laurent Drissen; Carmelle Robert

doi:10.1117/12.2630104

29 August 2022 Discovery of planetary nebulae in NGC 4214 using SITELLE

Sebastien Vicens-Mouret, Laurent Drissen, Carmelle Robert

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121846C (2022) https://doi.org/10.1117/12.2630104
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

We present data taken with the imaging Fourier transform spectrograph SITELLE, at the Canada-France-Hawaii Telescope, of the nearby dwarf starburst galaxy NGC 4214. From these data, we identify 18 new planetary nebula candidates in the outer part of the galaxy. For each planetary nebula, we provide the flux of the strong emission lines, the [Oiii]λλ5007,4959 Hα and Hβ, as well as the radial velocity. We also provide the kinematics for 13 of the 17 planetary nebulae previously discovered in the central part of the galaxy with HST data by Dopita et al. (2010). We present a novative technique to obtain accurate velocity measurement for objects with [Oiii] emission but without Hα emission with SITELLE. We use the [Oiii] emission line luminosity function of the planetary nebulae to establish a new velocity-independent distance for the galaxy. This method gives a distance D = 3.31+0.20 −0.27 Mpc for NGC 4214.

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Sebastien Vicens-Mouret, Laurent Drissen, and Carmelle Robert "Discovery of planetary nebulae in NGC 4214 using SITELLE", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121846C (29 August 2022); https://doi.org/10.1117/12.2630104

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