PN A66 21 , the SIMBAD biblio

PN A66 21 , the SIMBAD biblio (178 results) C.D.S. - SIMBAD4 rel 1.7 - 2019.11.17CET15:02:26


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Title First 3 Authors
2018A&A...616L...2K viz 18       D               1 384 2 Planetary nebula distances in Gaia DR2. KIMESWENGER S. and BARRIA D.
2017ApJ...837L..10B 17       D               2 83 12 Planetary nebulae that cannot be explained by binary systems. BEAR E. and SOKER N.
2017AstL...43..304B 24 2 Vertical distribution and kinematics of planetary nebulae in the Milky Way. BIBYLEV V.V. and BAJKOVA A.T.
2017NewA...57....6S 17       D               2 41 4 The Gaia Data Release 1 parallaxes and the distance scale of Galactic planetary nebulae. STANGHELLINI L., BUCCIARELLI B., LATTANZI M.G., et al.
2016MNRAS.455.1459F 17       D               2 284 77 The Hα surface brightness-radius relation: a robust statistical distance indicator for planetary nebulae. FREW D.J., PARKER Q.A. and BOJICIC I.S.
2016yCat....1.2035M viz 17       D               14264 ~ A Catalogue of Spectroscopically Identified White Dwarfs MCCOOK G.P. and SION E.M.
2015MNRAS.448..188S 44           X         1 16 37 Evaporation and accretion of extrasolar comets following white dwarf kicks. STONE N., METZGER B.D. and LOEB A.
2015MNRAS.449.2980S 17       D               6 74 9 On the distances of planetary nebulae. SMITH H.
2014AJ....147..142C 387       D     X C       9 41 16 Dusty disks around central stars of planetary nebulae. CLAYTON G.C., DE MARCO O., NORDHAUS J., et al.
2013A&A...553A..72K         O           26 16 The NGC 1614 interacting galaxy. Molecular gas feeding a ``ring of fire''. KOENIG S., AALTO S., MULLER S., et al.
2013A&A...558A..78J 97       D     X         3 83 19 The evolution of planetary nebulae. VIII. True expansion rates and visibility times. JACOB R., SCHOENBERNER D. and STEFFEN M.
2013A&A...558A..93A 219       D     X         6 37 4 Interacting planetary nebulae. II. Galactic population and interaction models. ALI A., ISMAIL H.A., SNAID S., et al.
2013ApJ...771..114P viz 16       D               2 100 15 The deceleration of nebular shells in evolved planetary nebulae. PEREYRA M., RICHER M.G. and LOPEZ J.A.
2013MNRAS.431....2F viz 97       D     X         3 1347 50 A catalogue of integrated Hα fluxes for 1258 Galactic planetary nebulae. FREW D.J., BOJICIC I.S. and PARKER Q.A.
2012A&A...541A..98A viz 177       D     X C       4 129 14 Interacting planetary nebulae. I. Classification and orientation. ALI A., SABIN L., SNAID S., et al.
2012ApJ...753..173E 40           X         1 23 8 A rare early-type star revealed in the wing of the Small Magellanic Cloud. EVANS C.J., HAINICH R., OSKINOVA L.M., et al.
2012ApJS..200....3B 538       D     X         14 103 30 Spitzer search for dust disks around central stars of planetary nebulae. BILIKOVA J., CHU Y.-H., GRUENDL R.A., et al.
2011A&A...526A...6W viz 16       D               1 492 40 Central stars of planetary nebulae: new spectral classifications and catalogue. WEIDMANN W.A. and GAMEN R.
2011AJ....141..104W 953   K A D S   X         24 15 5 Orbits of nearby planetary nebulae and their interaction with the interstellar medium. WU Z.-Y., MA J., ZHOU X., et al.
2011AJ....142...75C 969       D S   X C       23 82 27 Spitzer 24 µm survey for dust disks around hot white dwarfs. CHU Y.-H., SU K.Y.L., BILIKOVA J., et al.
2010A&A...509A..19J 590           X         15 13 8 The molecular gas content of the advanced S+E merger NGC 4441. Evidence for an extended decoupled nuclear disc? JUETTE E., AALTO S. and HUETTEMEISTER S.
2010A&ARv..18..471A 97 191 Evolutionary and pulsational properties of white dwarf stars. ALTHAUS L.G., CORSICO A.H., ISERN J., et al.
2009A&A...495..537U 133       D     X         4 11 6 The Σ-d relation for planetary nebulae. UROSEVIC D., VUKOTIC B., ARBUTINA B., et al.
2009AJ....138..691C 55       D     X C       1 44 30 Spitzer 24 µm images of planetary nebulae. CHU Y.-H., GRUENDL R.A., GUERRERO M.A., et al.
2009ApJ...701.1008C 22 9 On the possible existence of short-period g-mode instabilities powered by nuclear-burning shells in post-asymptotic giant branch h-deficient (PG1159-Type) stars. CORSICO A.H., ALTHAUS L.G., MILLER BERTOLAMI M.M., et al.
2008A&A...479..155K viz 15       D               283 9 Galactic planetary nebulae and their central stars. II. Proper motions. KERBER F., MIGNANI R.P., SMART R.L., et al.
2008ApJ...682.1020K viz 39           X         1 21 12 X-ray sources in the star-forming galaxies NGC 4194 and NGC 7541. KAARET P. and ALONSO-HERRERO A.
2008ApJ...689..194S viz 15       D               1 560 74 The Magellanic cloud calibration of the Galactic planetary nebula distance scale. STANGHELLINI L., SHAW R.A. and VILLAVER E.
2008PASP..120..380W viz 15       D               467 6 The spatial orientation of planetary nebulae within the Milky way. WEIDMANN W.A. and DIAZ R.J.
2007A&A...475..217Q viz 15       D               477 19 Bayesian posterior classification of planetary nebulae according to the Peimbert types. QUIREZA C., ROCHA-PINTO H.J. and MACIEL W.J.
2007AJ....133..631H 16       D               1 25 59 Trigonometric parallaxes of central stars of planetary nebulae. HARRIS H.C., DAHN C.C., CANZIAN B., et al.
2007MNRAS.381..245R 77           X         2 39 22 The Galaxy Evolution Explorer UV emission in shell galaxies: tracing galaxy `rejuvenation' episodes. RAMPAZZO R., MARINO A., TANTALO R., et al.
2006A&A...454..527G         O           24 14 A search for photometric variability of hydrogen-deficient planetary-nebula nuclei. GONZALEZ PEREZ J.M., SOLHEIM J.-E. and KAMBEN R.
2006A&A...454..839K 44 8 Precise radial velocities with BOES. Detection of low-amplitude pulsations in the K-giant α Arietis. KIM K.M., MKRTICHIAN D.E., LEE B.-C., et al.
2006A&A...454..863C 27 40 Asteroseismic inferences on GW Virginis variable stars in the frame of new PG 1159 evolutionary models. CORSICO A.H. and ALTHAUS L.G.
2006A&A...458..259C 22 38 New nonadiabatic pulsation computations on full PG 1159 evolutionary models: the theoretical GW Virginis. instability strip revisited. CORSICO A.H., ALTHAUS L.G. and MILLER BERTOLAMI M.M.
2006MNRAS.372.1081F 30 29 Two new evolved bipolar planetary nebulae in the solar neighbourhood. FREW D.J., PARKER Q.A. and RUSSEIL D.
2006PASP..118..183W 1 62 201 The elemental abundances in bare planetary nebula central stars and the shell burning in AGB stars. WERNER K. and HERWIG F.
2005A&A...444..791B 8 7 Sub-arcsecond imaging of the radio continuum and neutral hydrogen in the Medusa merger. BESWICK R.J., AALTO S., PEDLAR A., et al.
2005AJ....129..927R viz 59 18 Unresolved H-alpha enhancements at high galactic latitude in the WHAM sky survey maps. REYNOLDS R.J., CHAUDHARY V., MADSEN G.J., et al.
2005AN....326Q.501M 76 T                   3 0 Multiwavelength observations of two S+E merger candidates: the Medusa and NGC 4441. MANTHEY E., HUETTEMEISTER S. and AALTO S.
2005MNRAS.357..619P 54 14 The distances of highly evolved planetary nebulae. PHILLIPS J.P.
2004A&A...427..685W 1 17 46 Identification of neon in FUSE and VLT spectra of extremely hot hydrogen-deficient (pre-) white dwarfs. WERNER K., RAUCH T., REIFF E., et al.
2004MNRAS.353..589P viz 448 71 Planetary nebula distances re-examined: an improved statistical scale. PHILLIPS J.P.
2004NewA....9..391P         O           74 8 The distances of Type I planetary nebulae. PHILLIPS J.P.
2004PASA...21..334P 3 6 38 PFP 1 : a large planetary nebula caught in the first stages of ISM interaction. PIERCE M.J., FREW D.J., PARKER Q.A., et al.
2003A&A...408.1029K viz 1324 48 Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates. KERBER F., MIGNANI R.P., GUGLIELMETTI F., et al.
2003MNRAS.344..501P 376 44 The relation between Zanstra temperature and morphology in planetary nebulae. PHILLIPS J.P.
2002AN....323..484K viz 15       D               741 5 Accurate coordinates of planetary nebulae. KOHOUTEK L. and KUHL D.
2002ApJ...576..285S 203 40 The correlations between planetary nebula morphology and central star evolution: analysis of the northern galactic sample. STANGHELLINI L., VILLAVER E., MANCHADO A., et al.
2001A&A...374..599B 80 39 The distance scale of planetary nebulae. BENSBY T. and LUNDSTROEM I.
2001A&A...378..843K viz 15       D               2203 66 Version 2000 of the Catalogue of Galactic Planetary Nebulae. KOHOUTEK L.
2001Ap&SS.277..393C 168 5 Gravity distances of planetary nebulae II. Aplication to a sample of galactic objects. CAZETTA J.O. and MACIEL W.J.
2000A&A...354..573R 35 11 Shaping of elliptical planetary nebulae. The influence of dust-driven winds of AGB stars. REIMERS C., DORFI E.A. and HOEFNER S.
2000A&A...362.1008G 70 52 Evolutionary status of hydrogen-deficient central stars of planetary nebulae. GORNY S.K. and TYLENDA R.
2000Ap&SS.271..245A 42 3 Statistical and physical study of one-sided planetary nebulae. ALI A., EL-NAWAWY M.S. and PFLEIDERER J.
2000ApJ...531..928H 25 48 A new look at carbon abundances in planetary nebulae. IV. Implications for stellar nucleosynthesis. HENRY R.B.C., KWITTER K.B. and BATES J.A.
2000ApJS..129..295G 81 38 ROSAT observations of X-ray emission from planetary nebulae. GUERRERO M.A., CHU Y.-H. and GRUENDL R.A.
2000RMxAA..36....3C 102 16 Distances of galactic planetary nebulae based on a relationship between the central star mass and the N/O abundance. CAZETTA J.O. and MACIEL W.J.
1999A&AS..138..275H 37   K                 7 12 Monochromatic morphologies of Abell planetary nebulae. HUA C.T. and KWOK S.
1999AJ....118..488C 112 135 A Hubble Space Telescope survey for resolved companions of planetary nebula nuclei. CIARDULLO R., BOND H.E., SIPIOR M.S., et al.
1999ApJS..121....1M viz 3046 292 A catalog of spectroscopically identified white dwarfs. McCOOK G.P. and SION E.M.
1999ApJS..123..219C viz 478 22 Infrared planetary nebulae in the NRAO VLA sky survey. CONDON J.J., KAPLAN D.L. and TERZIAN Y.
1999PASP..111.1163G 6 15 Trigonometric distances of planetary nebulae. GUTIERREZ-MORENO A., ANGUITA C., LOYOLA P., et al.
1998A&A...334..618D 1 24 111 Spectral analyses of PG1159 star: constraints on the GW Virginis pulsations from HST observations. DREIZLER S. and HEBER U.
1998A&A...335..277K 7 5 HST photometry of the stars near the center of PN NGC 650. KOORNNEEF J. and POTTASCH S.R.
1998A&A...338..651R 41 38 Spectral analysis of O(He)-type post-AGB stars. RAUCH T., DREIZLER S. and WOLFF B.
1998A&A...340..527P 315 20 Electron densities in planetary nebulae, and the unusual characteristics of the [SII] emission zone. PHILLIPS J.P.
1998A&AS..130..465P 30 11 Spectral trends in planetary nebulae: The roles of radiative and shock excitation. PHILLIPS J.P. and GUZMAN V.
1998A&AS..132...13D viz 870 59 The kinematics of 867 galactic planetary nebulae. DURAND S., ACKER A. and ZIJLSTRA A.
1998AJ....116.1367J 18 16 The size and age of Sakurai's planetary nebula and the temperature of its central star. JACOBY G.H., DE MARCO O. and SAWYER D.G.
1998ApJ...495..337D 36 38 Instabilities in moving planetary nebulae. DGANI R. and SOKER N.
1998ApJ...500L..55K 25 44 Determination of mass-loss rates of PG 1159 stars from far-ultraviolet spectroscopy. KOESTERKE L. and WERNER K.
1998ApJS..117..361C viz 887 77 Planetary nebulae in the NRAO VLA sky survey. CONDON J.J. and KAPLAN D.L.
1997A&A...317..911P 8 7 The evolved central star of the planetary nebula ESO 166-PN 21. PENA M., RUIZ M.T., BERGERON P., et al.
1997A&A...324.1149K 10 2 DHW1-2: a mislaid planetary nebula of peculiar morphology. KERBER F., GROEBNER H., LERCHER G., et al.
1997ApJS..112..487S viz 455 147 Properties that cannot be explained by the progenitors of planetary nebulae. SOKER N.
1997IAUS..180...40H 2 10 61 Trigonomitric parallaxes of planetary nebulae. HARRIS H.C., DAHN C.C., MONET D.G., et al.
1997IAUS..180..214C 22 6 X-ray emission from planetary nebulae. CONWAY G.M. and CHU Y.-H.
1996A&A...307..561P 58 84 Local space density and formation rate of planetary nebulae. POTTASCH S.R.
1996A&A...309..895P 9 6 HST observations of the PG 1159 type central star of K1-16. PATRIARCHI P. and PERINOTTO M.
1996A&A...310..613R 37 26 Spectral analysis of the multiple-shell planetary nebula LoTr4 and its very hot hydrogen-deficient central star. RAUCH T., KOEPPEN J. and WERNER K.
1996A&AS..116..395F 233 3 Classification of planetary nebulae by cluster analysis and artificial neural networks. FAUNDEZ-ABANS M., ORMENO M.I. and DE OLIVEIRA-ABANS M.
1996AJ....111.2332C 33 67 A survey for pulsations in O VI nuclei of planetary nebulae. CIARDULLO R. and BOND H.E.
1996ApJ...458..215H 22 31 A new look at carbon abundances in planetary nebulae. I. PB 6, Hu 2-1, K648, and H4-1. HENRY R.B.C., KWITTER K.B. and HOWARD J.W.
1996ApJS..107..255T 32 71 An atlas of ancient planetary nebulae and their interaction with the interstellar medium. TWEEDY R.W. and KWITTER K.B.
1996Ast....24c..66E 13 0 Remembering Gemini. EICHER D.J.
1995A&A...301..545N 42 68 Spectroscopic investigation of old planetaries. III. Spectral types, magnitudes, and distances. NAPIWOTZKI R. and SCHOENBERNER D.
1995ApJ...447..257T 2 9 61 The closest planetary nebula, Sh 2-216 and its interaction with the interstellar medium. TWEEDY R.W., MARTOS M.A. and NORIEGA-CRESPO A.
1995ApJS...98..659Z viz 644 172 A statistical distance scale for galactic planetary nebulae. ZHANG C.Y.
1995BaltA...4..340W 27 8 Spectra of GW Vir type pulsators. WERNER K.
1995MNRAS.273..812H 24 17 ROSAT observations of EUV-bright planetary nebula central stars. HOARE M.G., BARSTOW M.A., WERNER K., et al.
1995MNSSA..54...72. 127 0 The nomenclature of deep-sky objects. :Anonymous
1994A&AS..106..559T viz 768 24 A catalogue HeII 4686 line intensities in Galactic planetary nebulae. TYLENDA R., STASINSKA G., ACKER A., et al.
1994AJ....108..978T 18 33 The planetary nebula abandoned by its central star. TWEEDY R.W. and NAPIWOTZKI R.
1994Ap&SS.219..231M 200 36 Abundances and radial gradients from disk planetary nebulae : HE, N, C and CL. MACIEL W.J. and CHIAPPINI C.
1994PASP..106...56F 28 8 On planetary nebula nuclei of the spectral type "continuous". FEIBELMAN W.A.
1994PASP..106..756F 66 12 X-ray planetary nebulae. FEIBELMAN W.A.
1994RMxAA..29S.211P 4 0 The low luminosity central star of the PN ESO 166-21. PENA M., RUIZ M.T. and TORRES-PEIMBERT S.
1993AcA....43..343N 13 34 White dwarfs in old planetary nebulae. NAPIWOTZKI R.
1993AcA....43..425B 29 13 Asteroseismology of planetary nebula nuclei. BOND H.E., CIARDULLO R. and KAWALER S.D.
1993IAUS..155..175P 8 21 Trigonometric parallaxes of planetary nebulae. PIER J.R., HARRIS H.C., DAHN C.C., et al.
1993IAUS..155..307B 11 6 Interaction of planetary nebulae with the interstellar medium. BORKOWSKI K.J.
1992A&A...262..271M 151 50 Kinematics of disk planetary nebulae. MACIEL W.J. and DUTRA C.M.
1992A&AS...94..399C viz 772 390 A catalogue of absolute fluxes and distances of planetary nebulae. CAHN J.H., KALER J.B. and STANGHELLINI L.
1992A&AS...95..337T 925 86 The extinction constants for galactic planetary nebulae. TYLENDA R., ACKER A., STENHOLM B., et al.
1992ESOPN...1....1A viz 1828 ~ Strasbourg-ESO Catalogue of Galactic Planetary Nebulae ACKER A., OCHSENBEIN F., STENHOLM B., et al.
1991A&AS...89...77T 352 67 The B and V magnitudes of the central stars of planetary nebulae. TYLENDA R., ACKER A., STENHOLM B., et al.
1991A&AS...90...89A 876 46 The absolute H-beta fluxes for galactic planetary nebulae. ACKER A., STENHOLM B., TYLENDA R., et al.
1990AJ.....99..622F 296 86 Fabry-Perot H-alpha observations of galactic H II regions. FICH M., TREFFERS R.R. and DAHL G.P.
1990ApJ...359..392K 120 108 Large planetary nebulae and their significance to the late stages of stellar evolution. KALER J.B., SHAW R.A. and KWITTER K.B.
1989A&AS...78..301W 286 132 A catalogue of expansion velocities of galactic planetary nebulae. WEINBERGER R.
1989Ap&SS.154...21A 348 16 Planetary nebulae in the galaxy. AMNUEL P.R., GUSEINOV O.H. and RUSTAMOV Y.S.
1989ApJ...343..811S 150 120 Electron densities in planetary nebulae. STANGHELLINI L. and KALER J.B.
1989ApJ...345..871K 62 115 Central star temperatures of optically thick planetary nebulae and a distance-independent test of dredge-up theory. KALER J.B. and JACOBY G.H.
1989ApJ...346..201H 93 110 CO in planetary nebulae. HUGGINS P.J. and HEALY A.P.
1989IAUS..131...50A 71 T                   1 2 0 New observations of planetary nebulae S22 and
YM29.
ARKHIPOVA V.P., LOZINSKAYA T.A., MOSKALENKO E.I., et al.
1989IAUS..131..174L 9 0 IRAS observations of extended planetary nebulae. LEENE A. and POTTASCH S.R.
1988A&A...202..203L 66 16 IRAS pointed observations of planetary nebulae. LEENE A. and POTTASCH S.R.
1988ApJ...326..368P 71 55 A young planetary nebula with OH molecules: NGC 6302. PAYNE H.E., PHILLIPS J.A. and TERZIAN Y.
1988ApJ...327..342T 21 29 EINSTEIN X-ray observations of planetary nebulae and their implications. TARAFDAR S.P. and APPARAO K.M.V.
1988RMxAA..16..105F 48 15 Vertical abundance gradients of planetary nebulae. FAUNDEZ-ABANS M. and MACIEL W.J.
1987A&A...178..227I 36 54 Two senile nearby planetary nebulae and the local planetary nebulae population. ISHIDA K. and WEINBERGER R.
1987ApJ...313..268H 68 38 Mass distribution and evolutionary schema for central stars of planetary nebulae. HEAP S.R. and AUGENSEN H.J.
1986A&A...160...31S 127 27 Statistical evolutionary properties of planetary nebulae: thicknesses of the nebulae and temperatures of the stars. SABBADIN F.
1986AZh....63..255L 70 T                   1 1 2 Monochromatic and spectral observations of the thin-filament nebula
YM 29.
LOZINSKAYA T.A., SITNIK T.G. and TOROPOVA M.S.
1986MitAG..67..346W 37 0 Lokale planetarische Nebel - eine Revision. WEINBERGER R.
1986PAZh...12..890A 70 T                   1 3 0 A search for stellar wind evidence from the nucleus of
YM 29 (A21).
ARKHIPOVA V.P., LOZINSKAYA T.A. and MOSKALENKO E.I.
1985Ap&SS.113...59A 107 10 The parameters of planetary nebulae and their central stars derived from observations. AMNUEL P.R., GUSEINOV O.H., NOVRUZOVA H.I., et al.
1985ApJ...297..724K 34 76 Ultraviolet spectra of the central stars of large planetary nebulae. KALER J.B. and FEIBELMAN W.A.
1984A&A...137..291S 71 T                   2 9 Observations of the emission nebulae S 188 and
S 274 at 2.7 and 5 GHz.
SALTER C.J., GREVE A., WEILER K.W., et al.
1984A&AS...55..253M 657 131 A catalogue of distances of planetary nebulae. MACIEL W.J.
1984A&AS...58..273S 163 80 A catalogue of expansion velocities in planetary nebulae. SABBADIN F.
1984Ap&SS.107...19A 316 56 Statistical survey of planetary nebulae : distances, masses, and distribution in the Galaxy. AMNUEL P.R., GUSEINOV O.H., NOVRUZOVA H.I., et al.
1984ApJ...279..304C 49 24 Observational evolution of the central stars of planetary nebulae. CAHN J.H.
1983A&AS...54..315A 1436 15 Index and cross-identification of planetary nebulae. ACKER A., MARCOUT J., OCHSENBEIN F., et al.
1983ApJ...265..249W 16 32 A newly discovered nearby planetary nebula of old age. WEINBERGER R., DENGEL J., HARTL H., et al.
1983ApJ...271..188K 80 266 The evolution of large planetary nebulae and their central stars. (NB: PK 13+2 1=131+2 1, 214+14 1=217+14 1) KALER J.B.
1983ApJS...52..399S 499 180 Radial velocities of planetary nebulae. SCHNEIDER S.E., TERZIAN Y., PURGATHOFER A., et al.
1983IAUS..103..523K 70 T                   1 1 0 Chemical composition of the peculiar nebula
YM 29.
KWITTER K.B., JACOBY G.H. and LAWRIE D.G.
1983IAUS..103..547R 70 T                   1 0 Fabry-Perot radial velocities of
S 274 : a planetary nebula.
RECILLAS-CRUZ E. and PISMIS P.
1983PASP...95..732K 70 T                   1 6 16 Classification of the planetary nebula
YM 29 (=S 274 = A 21).
KWITTER K.B., JACOBY G.H. and LAWRIE D.G.
1982A&AS...50..209M 397 83 Radio observations at 14.7 GHZ of southern planetary nebulae. MILNE D.K. and ALLER L.H.
1982ApJS...49..183B viz 407 398 Catalogue of CO radial velocities toward galactic HII regions. BLITZ L., FICH M. and STARK A.A.
1982PSCDS...3....0A 452 ~ Catalogue of the central stars of true and possible planetary nebulae. ACKER A., GLEIZES F., CHOPINET M., et al.
1981A&A....97..398R 70 T                   1 8 Fabry-Perot radial velocities of
S 274: a planetary nebula.
RECILLAS-CRUZ E. and PISMIS P.
1981A&A...100...28F 132 30 A high-resolution search for small-scale structure in Sharpless H II regions at 4.995 GHz. FELLI M. and HARTEN R.H.
1981ApJ...245..131F 5 20 Sharpless 216: a curious emission-line nebula. FESEN R.A., BLAIR W.P. and GULL T.R.
1981ApJS...45..457A 123 151 The magnetic fields of white dwarfs. ANGEL J.R.P., BORRA E.F. and LANDSTREET J.D.
1979A&AS...36..227M 208 83 Radio observations at 5 GHz of southern planetary nebulae. II. MILNE D.K.
1979Afz....15..269K 176 8 Distances and galactic distribution of planetary nebulae. KHROMOV G.S.
1979ApJ...228..163K 98 65 The enrichment of nitrogen and He in planetary nebulae. KALER J.B.
1979MNRAS.189..459M 4 4 G 329.2-0.4: SNR, or PN ? MURDIN P., CLARK D.H. and HAYNES R.F.
1978A&AS...33..367A 331 199 A new synthetic distance scale for planetary nebulae. ACKER A.
1978ApJ...224..873P 14 43 The N II/Halpha ratio in NGC 6888. PARKER R.A.R.
1978IAUS...76...47K 267 45 New and misclassified planetary nebulae. KOHOUTEK L.
1978SvAL....4....7A 69 T                   1 2 6 On the nature of nebula A21 (
YM 29) and Simeiz 22.
ARKHIPOVA V.P. and LOZINSKAYA T.A.
1977A&AS...30..217A 982 4 Bibliographical index of planetary nebulae for the period 1965-1976. ACKER A. and MARCOUT J.
1976A&AS...25...25D viz 14       D               1 619 27 HII regions of the Northern Milky Way: medium large field photographic atlas and catalogue. DUBOUT-CRILLON R.
1976ApJS...31..517K 334 344 A catalog of relative emission line intensities observed in planetary and diffuse nebulae. KALER J.B.
1975ApJ...196..191L 70 T                   1 1 10 The optical spectrum of the nebula
YM 29.
LEIBOWITZ E.M.
1974Ap&SS..27....3M 43 66 A comparison catalogue of HII regions. MARSALKOWA P.
1973AJ.....78..239M 153 38 Improved optical positions for 153 planetary nebulae. MILNE D.K.
1973MNRAS.161..313H 56 20 Study of radio continuum spectra of planetary nebulae. HIGGS L.A.
1973MSRSL...5...89H 14 6 The observation spectra radio data. HIGGS L.A.
1973MSRSL...5..367J 68 T                   1 2 4 Spectrum of NGC 7635,
YM 29, the central star of
YM 29.
JOHNSON H.M.
1973SvA....16..945L 68 T                   1 2 1 Interferometry of the
Medusa nebula A 21 (YM 29).
LOZINSKAYA T.A.
1972MSRSL...5..367J 68 T                   1 2 ~ Spectra of NGC 7635,
YM 29.
JOHNSON H.M.
1971ApJ...163..151J 68 T                   1 2 9 Observation and classification of the nebula
YM 29.
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