Supernova remnants, planetary nebulae and the distance to NGC 4214
Mutchler, Max; Windhorst, Rogier; Blair, William P.; Calzetti, Daniela; Whitmore, Bradley C.; Bond, Howard E.; Frogel, Jay A.; Balick, Bruce; Dopita, Michael A.; Holtzman, Jon A.; Kimble, Randy A.; Paresce, Francesco; Walker, Alistair R.; Saha, Abhijit; Long, Knox S.; MacKenty, John; Carollo, Marcella; McCarthy, Patrick; Sirianni, Marco; Trauger, John; Silk, Joe; O'Connell, Robert; Maíz Apellániz, Jesús; Young, Erick; Disney, Michael; Hall, Donald
Australia, United States, Spain, Switzerland, United Kingdom, Italy, Germany
Abstract
We present narrow band, continuum subtracted Hα, [S II], Hβ, [O III] and [O II] data taken with the Wide Field Camera 3 on the Hubble Space Telescope in the nearby dwarf starburst galaxy NGC 4214. From these images, we identify seventeen new planetary nebula candidates, and seven supernova remnant candidates. We use the observed emission line luminosity function of the planetary nebulae to establish a new velocity-independent distance to NGC 4214. We conclude that the PNLF technique gives a reddening independent distance to NGC 4214 of 3.19±0.36 Mpc, and that our current best-estimate of the distance to this galaxy ids 2.98±0.13 Mpc.