J/ApJ/479/231 J/ApJ/479/231 PNe in M51, M96 & M101 J J Feldmeier R Ciardullo G H Jacoby Astrophys. J. 479 231 1997 1997ApJ...479..231F J/ApJ/462/1 : PNe in the Coma I region (Jacoby+ 1996) Jacoby, Paper I. 1989ApJ...339...39J Ciardullo et al., Paper II. 1989ApJ...339...53C Jacoby et al., Paper III. 1989ApJ...344..704J Ciardullo et al., Paper IV. 1989ApJ...344..715C Jacoby et al., Paper V. 1990ApJ...356..332J Jacoby et al., Paper VI. 1990ApJ...365..471J Ciardullo et al., Paper VII. 1991ApJ...383..487C Ciardullo et al., Paper VIII. 1992ApJ...388..268C McMillan et al., Paper IX. 1993ApJ...416...62M Jacoby et al., Paper X. 1996ApJ...462....1J, Cat. <J/ApJ/462/1> Planetary nebulae galaxies: distances and redshifts galaxies: individual (M 51, M 96, M 101) galaxies: spiral planetary nebulae: general We report the results of an [O III]{lambda}5007 survey for planetary nebulae (PNs) in three spiral galaxies: M101 (NGC 5457), M51 (NGC 5194/5l95), and M96 (NGC 3368). By comparing on-band/off-band [O III]{lambda}5007 images with images taken in H{alpha} and broadband R. we identify 65, 64, and 74 PN candidates in each galaxy, respectively. From these data, an adopted M31 distance of 770kpc, and the empirical planetary nebula luminosity function (PNLF), we derive distances to M101, M51, and M96 of 7.7+/-0.5, 8.4+/-0.6, and 9.6+/-0.6Mpc. These observations demonstrate that the PNLF technique can be successfully applied to late-type galaxies and can provide an important overlap between the Population I and Population II distance scales. We also discuss some special problems associated with using the PNLF in spiral galaxies, including the effects of dust and the possible presence of [O III] bright supernova remnants.

Gal Galaxy name --- PN Planerary number in the galaxy --- RAh Right ascension (2000) h RAm Right ascension (2000) min RAs Right ascension (2000) s DEd Declination (2000) deg DEm Declination (2000) arcmin DEs Declination (2000) arcsec Rad Isophotal radius from galaxy arcmin m5007 Lambda5007 magnitude (m5007=-2.5logF5007 - 13.74) mag Note Notes number=1 S: PNe that are part of the statistical samples --- Marie-Jose Wagner, Patricia Bauer CDS 1997Oct07 UNKNOWN UNKNOWN Prepared via OCR at CDS. J_ApJ_479_231.xml