[WBN74] W 51 IRS 2 , the SIMBAD biblio

[WBN74] W 51 IRS 2 , the SIMBAD biblio (321 results) C.D.S. - SIMBAD4 rel 1.8 - 2026.10.18CEST05:53:07

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Keywords 		in a table in teXt, Caption, ... Nb occurence Nb objects in ref Citations
(from ADS) 		Title First 3 Authors
1972MNRAS.157...31M 115       D     X   F     3 14 98 High resolution observations of W51. MARTIN A.H.M.
1974ApJ...187..473W 1 24 262 Infrared studies of H II regions and OH sources. WYNN-WILLIAMS C.G., BECKLIN E.E. and NEUGEBAUER G.
1977ApJ...211..421D 18 69 Infrared observations of compact H II regions in the spectral range 3.4-33 micrometers. DYCK H.M. and SIMON T.
1978MNRAS.183..435S 3 4 64 High resolution radio observations of G49.5-0.4 (W521). SCOTT P.F.
1982ApJ...252..250H 22 101 10 and 20 micron images of regions of star formation. HACKWELL J.A., GRASDALEN G.L. and GEHRZ R.D.
1982ApJ...255..527G 2 9 99 Infrared and radio observations of W51: another Orion-KL at a distance of 7 kiloparsecs? GENZEL R., BECKLIN E.E., WYNN-WILLIAMS C.G., et al.
1982Ap&SS..83..405H 3 3 50 Infrared spectroscopy over the 2.9-3.9 mu.m. waveband in biochemistry and astronomy. HOYLE F., WICKRAMASINGHE N.C., AL-MUFTI S., et al.
1983A&AS...54..167B 382 100 Catalogue of non stellar molecular maser sources and their probable infrared counterparts in the galactic plane. BRAZ M.A. and EPCHTEIN N.
1983ARA&A..21..239H 11 9 533 Interstellar ammonia. HO P.T.P. and TOWNES C.H.
1985A&A...147L..19W 33 42 The discovery of a new masering transition of interstellar methanol. WILSON T.L., WALMSLEY C.M., MENTEN K.M., et al.
1986A&A...157..318M 42 117 The centimeter transitions of E-type methanol. MENTEN K.M., WALMSLEY C.M., HENKEL C., et al.
1986A&A...169..271M 1 7 54 Torsionally excited methanol in hot molecular cloud cores. MENTEN K.M., WALMSLEY C.M., HENKEL C., et al.
1987A&A...173..352M 72 T                   1 4 62 A multilevel study of ammonia in star-forming regions. I. Maser and thermal emission toward
W 51 IRS 2. 		MAUERSBERGER R., HENKEL C. and WILSON T.L.
1987ApJ...323L..73B 69 T                   1 4 9 Direct imaging at 12 microns of the star-forming region
W 51 IRS 2. 		BALLY J., ARENS J.F., BALL R., et al.
1988A&A...194L...1M 1 10 66 Deuterated methanol in Orion. MAUERSBERGER R., HENKEL C., JACQ T., et al.
1988A&A...199L...5J 1 10 55 H2 18 O in hot dense molecular cloud cores. JACQ T., JEWELL P.R., HENKEL C., et al.
1988A&A...206L..26W 2 2 18 The time variability of non-metastable ammonia maser lines. WILSON T.L. and HENKEL C.
1988ApJ...325..694W 27 22 Flux densities of ultracompact H II regions at 3 millimeters. WOOD D.O.S., CHURCHWELL E. and SALTER C.
1988ApJ...326..884W 31 23 Flux densities of ultracompact HII regions at 7 millimeters. WOOD D.O.S., HANDA T., FUKUI Y., et al.
1989A&AS...79..217M 1 14 109 Line calibrators at lambda = 1.3, 2 and 3 mm. MAUERSBERGER R., GUELIN M., MARTIN-PINTADO J., et al.
1989BAAS...21.1181R 3 0 The W 51 molecular core. RUDOLPH A., PALMER P. and WELCH W.J.
1990A&A...229L...1W 4 12 The locations and sizes of NH3 masers in W 51. WILSON T.L., JOHNSTON K.J. and HENKEL C.
1990A&AS...83..119C 89 258 A survey of ammonia and water vapor emission ultracompact HII regions CHURCHWELL E., WALMSLEY C.M. and CESARONI R.
1990ApJ...350L..41M 5 4 82 Submillimeter water masers. MENTEN K.M., MELNICK G.J. and PHILLIPS T.G.
1990ApJ...352L...9N 4 2 34 Interpretation of the newly discovered submillimeter water maser. NEUFELD D.A. and MELNICK G.J.
1990ApJ...356..160G 1 11 82 Far-infrared, submillimeter, and millimeter spectroscopy of the Galactic Center: radio arc and +20/+50 kilometer per second clouds. GENZEL R., STACEY G.J., HARRIS A.I., et al.
1990ApJ...363..528R 3 4 53 Dynamical collapse of the W 51 star-forming region. RUDOLPH A., WELCH W.J., PALMER P., et al.
1990ApJ...365..569T 25 40 Phosphorus in the dense interstellar medium. TURNER B.E., TSUJI T., BALLY J., et al.
1990ApJS...74..181Z viz 991 150 A catalog of small-diameter radio sources in the galactic plane. ZOONEMATKERMANI S., HELFAND D.J., BECKER R.H., et al.
1991A&A...244..190S 1 8 62 Explosive desorption of icy grain mantles in dense clouds. SCHUTTE W.A. and GREENBERG J.M.
1991A&A...251L...7W 70 T                   5 6 High resolution observations of the (9,8) ammonia maser line in
W 51-IRS2. 		WILSON T.L., GAUME R. and JOHNSTON K.J.
1991A&A...251..231S 2 6 55 Dust emission from star forming regions. I. The W 49A and W 51A complexes. SIEVERS A.W., MEZGER P.G., GORDON M.A., et al.
1991ApJ...369..382B 8 21 Observations of 12CO and 13CO J=9-8 in galactic molecular clouds. BOREIKO R.T. and BETZ A.L.
1991ApJ...378..445B 1 2 10 Pumping the interstellar (6,3) ammonia maser. BROWN R.D. and CRAGG D.M.
1991ApJ...379..260Z 9 12 SiS in outflows regions : more high-temperature silicon chemistry. ZIURYS L.M.
1991MNRAS.250..127C 18 19 Aperture synthesis observations of W 51 at 151 MHZ. COPETTI M.V.F. and SCHMIDT A.A.
1991MNRAS.252...63W 17 15 On the occurence of carbon dioxide in interstellar grain mantles. WHITTET D.C.B. and WALKER H.J.
1991MNRAS.253...75G 15 32 Observations of the 2-mu.m unidentified lines in planetary nebulae. GEBALLE T.R., BURTON M.G. and ISAACMAN R.
1991A&ARv...2..167W 39 68 Carbon monoxide frosts in the interstellar medium. WHITTET D.C.B. and DULEY W.W.
1991BAAS...23..977G 3 ~ Sub-arcsecond resolution 2micro-m. imaging of W51. GOLDADER J.D. and WYNN-WILLIAMS C.G.
1992A&A...266..463G 1 6 27 The abundance of nitric oxide in molecular clouds. GERIN M., VIALA Y., PAUZAT F., et al.
1992PASJ...44..373M 72 T                   4 34 Accurate positions of SiO masers in active star forming regions: Orion-KL, W 51-IRS 2 and Sagittarius-B2 MD5. MORITA K.-I., HASEGAWA T., UKITA N., et al.
1993A&A...273L..23H 9 20 First detection of CS (10-9) in galactic star forming cores. HAUSCHILDT H., GUSTEN R., PHILLIPS T.G., et al.
1993A&A...276..445H 1 15 77 A multilevel study of ammonia in star forming regions. V. The Sgr B2 region. HUETTEMEISTER S., WILSON T.L., HENKEL C., et al.
1993ApJ...416L..37M 3 6 76 Discovery of interstellar water lines at 437, 439 and 471 GHz : strong case for water maser formation behind C-type shocks. MELNICK G.J., MENTEN K.M., PHILLIPS T.G., et al.
1993ApJ...417..645G 1 12 75 High-resolution centimeter radio continuum and ammonia maser observations of the W 51 region of star formation. GAUME R.A., JOHNSTON K.J. and WILSON T.L.
1993ApJS...86..211B 5 19 A spectral-line survey of W51 from 17.6 to 22.0 GHz. BELL M.B., AVERY L.W. and WATSON J.K.G.
1994ApJ...433..164G 25 44 Near-infrared observations of W 51. GOLDADER J.D. and WYNN-WILLIAMS C.G.
1994ApJS...91..713M 31 77 Radio continuum and radio recombination line observations of W 51. MEHRINGER D.M.
1994ApJS...95..503W 11 32 Single-sideband calibration for CO, {^13}CO, HCN, and CS lines near 345 GHz. WANG Y., JAFFE D.T., GRAF U.U., et al.
1995A&A...295..571H 25 43 Dense gas in nearby galaxies. IX. A survey for HNC. HUETTEMEISTER S., HENKEL C., MAUERSBERGER R., et al.
1995ApJ...450L..63Z 10 28 Ammonia maser in a molecular outflow toward W51. ZHANG Q. and HO P.T.P.
1995ApJ...450L..67M 16 40 Discovery of strong vibrationally excited water masers at 658 GHz toward evolved stars. MENTEN K.M. and YOUNG K.
1995ApJS..100..371B 52 16 The continuum structure of 11 galactic H II regions. BALSER D.S., BANIA T.M., ROOD R.T., et al.
1995A&ARv...6..271D 43 142 Dust metamorphosis in the galaxy. DORSCHNER J. and HENNING T.
1995Ap&SS.224..535P 71 T                   3 2 Direct mid-IR images of GL 2591, W 51-IRS 2 and S 140. PERSI P., FERRARI-TONIOLO M., MARENZI A.R., et al.
1995RMxAA..31...39D 2 11 94 Ultracompact H II regions: are their lifetimes extended by dense, warm environments? DE PREE C.G., RODRIGUEZ L.F. and GOSS W.M.
1996A&A...314..265W 10 11 15NH3 towards ultracompact HII regions. WYROWSKI F. and WALMSLEY C.M.
1996A&A...314..281G 28 107 Water in galactic hot cores. GENSHEIMER P.D., MAUERSBERGER R. and WILSON T.L.
1996ApJ...457..267S 145 135 High-velocity molecular gas from high-mass star formation regions. SHEPHERD D.S. and CHURCHWELL E.
1996ApJ...472..742H 12 34 The contracting molecular cores e1 and e2 in W51. HO P.T.P. and YOUNG L.M.
1997ApJ...486L.103C 13 34 Detection of 7 millimeter sources near cometary H II regions. CARRAL P., KURTZ S.E., RODRIGUEZ L.F., et al.
1997ApJ...487..962F 1 6 36 New wavelength determinations of mid-infrared fine-structure lines by Infrared Space Observatory short-wavelength spectrometer. FEUCHTGRUBER H., LUTZ D., BEINTEMA D.A., et al.
1997ApJ...488..241Z 1 16 109 Dynamical collapse in W51 massive cores: NH3 observations. ZHANG Q. and HO P.T.P.
1997PASJ...49..561D 7 6 Infrared identification of SiO maser sources toward the Sgr B2 molecular cloud. DEGUCHI S., SHIKI S., MATSUMOTO S., et al.
1997PPMtO..16...69M 14 0 12CO (J = 1-0) and 13CO (J = 1-0) observations of some star forming regions. MAO R.-Q., ZENG Q., HAN F., et al.
1998A&A...335.1070S 11 2 A search for (H2O)2 in the Galaxy and toward comet Hale-Bopp. SCHERER M., HAVENITH M., MAUERSBERGER R., et al.
1998ApJ...494..636Z 2 18 134 Dynamical collapse in W51 massive cores: CS (3-2) and CH3CN observations. ZHANG Q., HO P.T.P. and OHASHI N.
1998ApJ...500..280F 35 55 Infrared spectroscopy of ultracompact H II regions. FAISON M., CHURCHWELL E., HOFNER P., et al.
1998ApJ...507..263W 107 T K                 6 11 Observations of the [Ne II] 12.8 micron emission from two ultracompact H II regions, G29.96-0.02 and
W51d. 		WATARAI H., MATSUHARA H., TAKAHASHI H., et al.
1998ApJ...507..270Y 9 16 Radiative transfer modeling of the accretion flow onto a star-forming core in W51. YOUNG L.M., KETO E. and HO P.T.P.
1998Natur.393..340M 1 6 21 Reflected infrared spectrum of a massive protostar in Orion. MORINO J.-I., YAMASHITA T., HASEGAWA T., et al.
1999A&A...351..341C 13 17 Detection of linear C3H2 in absorption toward continuum sources. CERNICHARO J., COX P., FOSSE D., et al.
1999A&AS..139..461A 28 30 Six years of short-spaced monitoring of the v=1 and v=2, J=1-0 28SiO maser emission in evolved stars. ALCOLEA J., PARDO J.R., BUJARRABAL V., et al.
1999AJ....117.1249D 164 31 The ionizing star clusters of giant H II regions in NGC 2403. DRISSEN L., ROY J.-R., MOFFAT A.F.J., et al.
1999ApJ...514..232K 51 92 Ultracompact H II regions with extended radio-continuum emission. KURTZ S.E., WATSON A.M., HOFNER P., et al.
1999ApJ...517..883B 55 135 New 3 micron spectra of young stellar objects with H2O ice bands. BROOKE T.Y., SELLGREN K. and GEBALLE T.R.
1999Ap&SS.268..137H 13 1 Calculations of infrared fluxes from galactic sources for a polysaccharide grain model. HOYLE F. and WICKRAMASINGHE N.C.
1999Ap&SS.268..161H 3 0 Infrared spectroscopy over the 2.9-3.9 mu.m. waveband in biochemistry and astronomy. HOYLE F., WICKRAMASINGHE N.C., AL-MUFTI S., et al.
1999PASJ...51..587I 5 6 VLBA observation of SiO masers in the M giant IRC -10414. IMAI H., DEGUCHI S. and MIYOSHI M.
2000AJ....120.2460Y 12 6 Properties of the molecular clouds in NGC 205. YOUNG L.M.
2000ApJ...536..393H 19 45 A C17O survey toward ultracompact H II regions. HOFNER P., WYROWSKI F., WALMSLEY C.M., et al.
2000ApJ...538..268P 15 42 Proper motion of water masers associated with IRAS 21391+5802: bipolar outflow and an AU-scale dusty circumstellar shell. PATEL N.A., GREENHILL L.J., HERRNSTEIN J., et al.
2000ApJ...541..779T 17 16 [Ne II] 12.8 micron images of four galactic ultracompact H II regions: ionized neon abundance as a tracer of the ionizing stars. TAKAHASHI H., MATSUHARA H., WATARAI H., et al.
2000ApJ...543..799O 41 45 The initial mass function of a massive star-forming region W51. OKUMURA S.-I., MORI A., NISHIHARA E., et al.
2000MNRAS.312..327S 74 93 Studies in mid-infrared spectropolarimetry - II. An atlas of spectra. SMITH C.H., WRIGHT C.M., AITKEN D.K., et al.
2001AJ....121.2089O 72 T                   15 12 Near-infrared spectroscopy of the compact H II region
W51 IRS 2. 		OKUMURA S.-I., MORI A., WATANABE E., et al.
2001ApJ...552..168F 1 6 30 Molecular carbon chains and rings in TMC-1. FOSSE D., CERNICHARO J., GERIN M., et al.
2001ApJ...552..654L 22 53 Observations of formic acid in hot molecular cores. LIU S.-Y., MEHRINGER D.M. and SNYDER L.E.
2001ApJ...553..254O 72 T                   41 27 High-resolution mid-infrared imaging and spectroscopic observations of a massive star forming region
W51 IRS 2. 		OKAMOTO Y.K., KATAZA H., YAMASHITA T., et al.
2001ApJ...558..194P 68 27 A methyl cyanide search for the earliest stages of massive protostars. PANKONIN V., CHURCHWELL E., WATSON C., et al.
2001ApJ...561..282K 36   K                 51 20 Dust characteristics of massive star-forming sites in the mid-infrared. KRAEMER K.E., JACKSON J.M., DEUTSCH L.K., et al.
2001PASJ...53..793O 26 6 A large-scale CO mapping of the central region of W 51. OKUMURA S.-I., MIYAWAKI R., SORAI K., et al.
2002A&A...381L..33H 7 17 Possible evidence for shocks in hot cores. HATCHELL J. and VITI S.
2002A&A...385.1014C viz 8 22 The magnetic field structure in W51A. CHRYSOSTOMOU A., AITKEN D.K., JENNESS T., et al.
2002A&A...389..603F 16 36 The structure of molecular clumps around high-mass young stellar objects. FONTANI F., CESARONI R., CASELLI P., et al.
2002A&A...389.1086D 2 5 Experimental Stark widths and shifts of triply ionized sulfur spectral lines. DJENIZE S., SRECKOVIC A., JELISAVCIC M., et al.
2002ApJ...566..880G viz 194 108 The excitation and metallicity of galactic H II regions from Infrared Space Observatory SWS observations of mid-infrared fine-structure lines. GIVEON U., STERNBERG A., LUTZ D., et al.
2002ApJ...569..334E 72 T                   14 24 Outflow 20-2000 AU from a high-mass protostar in
W51-IRS 2. 		EISNER J.A., GREENHILL L.J., HERRNSTEIN J.R., et al.
2002ApJ...575..291H 36 10 Molecular hydrogen outflows in W51. HODAPP K.W. and DAVIS C.J.
2002ApJ...576..264R 19 42 Acetic acid in the hot cores of Sagitarrius B2(N) and W51. REMIJAN A., SNYDER L.E., LIU S.-Y., et al.
2002ApJ...581..335L 26 23 The photoionization of a star-forming core in the Trifid Nebula. LEFLOCH B., CERNICHARO J., RODRIGUEZ L.F., et al.
2002ApJS..138...63A viz 30 84 Arecibo observations of formaldehyde and radio recombination lines toward ultracompact H II regions. ARAYA E., HOFNER P., CHURCHWELL E., et al.
2002PASJ...54..741I 1 14 43 3-D kinematics of water masers in the W 51A region. IMAI H., WATANABE T., OMODAKA T., et al.
2003ApJ...584..368O 20 27 K3-50A: an ultracompact H II region ionized by a massive stellar cluster. OKAMOTO Y.K., KATAZA H., YAMASHITA T., et al.
2003ApJ...586..891B 4 8 100 CO (J=7⟶6) observations of NGC 253: cosmic-ray-heated warm molecular gas. BRADFORD C.M., NIKOLA T., STACEY G.J., et al.
2003ApJS..147..379S 4 17 217 A uniform database of 2.4-45.4 micron spectra from the Infrared Space Observatory short wavelength spectrometer. SLOAN G.C., KRAEMER K.E., PRICE S.D., et al.
2003MNRAS.340..799L 12 24 Helium and hydrogen line ratios and the stellar content of compact HII regions. LUMSDEN S.L., PUXLEY P.J., HOARE M.G., et al.
2003MNRAS.343..143C 81 35 MSX mid-infrared imaging of massive star birth environments - I. Ultracompact HII regions. CROWTHER P.A. and CONTI P.S.
2003MmSAI..74..146P 50 1 Mid-infrared images of compact and ultracompact H II regions: W51 and W75N. PERSI P., MARENZI A.R., TAPIA M., et al.
2003PASJ...55..229N viz 148 35 SiO maser survey of cold IRAS sources. NAKASHIMA J. and DEGUCHI S.
2003NewAR..47...85V 125 25 Astral magnetic fields as observed in starforming nurseries, in stars, and in the Solar system. VALLEE J.P.
2004ApJ...601..858M 34 19 O star effective temperatures and H II region ionization parameter gradients in the Galaxy. MORISSET C.
2004ApJ...606..917R 16 40 High-resolution observations of methyl cyanide (CH3CN) toward the hot core regions W51e1/e2. REMIJAN A., SUTTON E.C., SNYDER L.E., et al.
2004ApJ...606..943S 14 26 The case for local collapse in the W51 star-forming region. SOLLINS P.K., ZHANG Q. and HO P.T.P.
2004ApJ...610L..41N 4 10 Detection of bipolar flow toward the unusual SiO maser source IRAS 19312+1950. NAKASHIMA J.-I. and DEGUCHI S.
2004ApJS..151..299H viz 924 16 Classification of spectra from the infrared space observatory PHT-s database. HODGE T.M., KRAEMER K.E., PRICE S.D., et al.
2004MNRAS.353.1025N viz 26 ~ Embedded star clusters in the W51 giant molecular cloud. NANDA KUMAR M.S., KAMATH U.S. and DAVIS C.J.
2004PASJ...56..705O 5 2 Near-infrared unidentified-line morphology of the planetary nebula NGC 7027. OKUMURA S., MORI A. and YANAGISAWA K.
2005A&A...432..737P viz 942 204 A general catalogue of 6.7-GHz methanol masers. I. Data. PESTALOZZI M.R., MINIER V. and BOOTH R.S.
2005ApJ...620..731J 74 37 Spitzer IRAC observations of star formation in N159 in the Large Magellanic Cloud. JONES T.J., WOODWARD C.E., BOYER M.L., et al.
2005ApJ...632..882O 2 29 178 Hot and diffuse clouds near the Galactic Center probed by metastable H+3. OKA T., GEBALLE T.R., GOTO M., et al.
2005ApJ...633..309D 21 6 The fine-structure lines of hydrogen in H II regions. DENNISON B., TURNER B.E. and MINTER A.H.
2005MNRAS.359..589M 19 21 The near-infrared extinction law in regions of high AV. MOORE T.J.T., LUMSDEN S.L., RIDGE N.A., et al.
2006A&A...454L..95W 14 15 Mid- and high-J CO observations towards ultracompact HII regions. WYROWSKI F., HEYMINCK S., GUESTEN R., et al.
2006ApJ...646..161D viz 15       D               267 134 Mid-infrared spectral diagnostics of nuclear and extranuclear regions in nearby galaxies. DALE D.A., SMITH J.D.T., ARMUS L., et al.
2006ApJS..166..526X viz 29 15 Search for compact extragalactic radio sources near massive star-forming regions. XU Y., REID M.J., MENTEN K.M., et al.
2006AstL...32..671Z 26 2 Investigation of the polarization observed in infrared absorption bands in the spectra of protostars. ZINOV'EVA T.V.
2006A&A...458..485F         O           43 16 Enhanced density and magnetic fields in interstellar OH masers. FISH V.L., REID M.J., MENTEN K.M., et al.
2007ApJ...658L..45L 12 17 W51 IRS 2: a massive jet emerging from a molecular cloud into an H II region. LACY J.H., JAFFE D.T., ZHU Q., et al.
2007PASJ...59...61N 19 5 ASTE 12CO(J=3-2) survey of elliptical galaxies. NAKANISHI H., TOSAKI T., KOHNO K., et al.
2007A&A...470..639F 15       D               1 15 14 Comparative study of complex N- and O-bearing molecules in hot molecular cores. FONTANI F., PASCUCCI I., CASELLI P., et al.
2007A&A...470..957M viz 37         O X         1 16 11 Near-infrared polarimetric study of the bipolar nebula IRAS 19312+1950. MURAKAWA K., NAKASHIMA J., OHNAKA K., et al.
2007ApJ...670.1159F 37           X         1 13 16 Proper motions of OH masers and magnetic fields in massive star-forming regions. FISH V.L. and REID M.J.
2008ApJ...674..304W 113 140 The efficiency of grain alignment in dense interstellar clouds: a reassessment of constraints from near-infrared polarization. WHITTET D.C.B., HOUGH J.H., LAZARIAN A., et al.
2008A&A...479L..25Z 210     A     X C       5 15 43 Forming an early O-type star through gas accretion? ZAPATA L.A., PALAU A., HO P.T.P., et al.
2008AJ....135.1708B 149           X         4 24 18 The ionizing stars of the galactic ultra-compact H II region G45.45+0.06. BLUM R.D. and McGREGOR P.J.
2008AstL...34..118Z 35 0 Investigation of the linear polarization in infrared absorption bands. ZINOV'EVA T.V.
2008ApJ...678L..55B 1475     A S   X C       38 10 15 High spatial resolution spectroscopy of
W51
IRS 2E and
IRS 2W: two very massive young stars in early formation stages. 		BARBOSA C.L., BLUM R.D., CONTI P.S., et al.
2008AJ....136..221F 1624     A S   X C       42 25 27 The stellar content of obscured galactic giant H II regions. VI. W51A. FIGUEREDO E., BLUM R.D., DAMINELI A., et al.
2008A&A...487..237W 276       D     X C       7 29 51 Galactic interstellar 18O/17O ratios - a radial gradient? WOUTERLOOT J.G.A., HENKEL C., BRAND J., et al.
2008ApJS..177..584Z 37           X         1 40 17 [Ne II] observations of gas motions in compact and ultracompact H II regions. ZHU Q.-F., LACY J.H., JAFFE D.T., et al.
2009ApJ...691..332Z 1198     A D S   X C F     30 101 24 An extensive, sensitive search for SiO masers in high- and intermediate-mass star-forming regions. ZAPATA L.A., MENTEN K., REID M., et al.
2009ApJ...693..413X 1223 T K A S   X C F     29 19 95 Trigonometric parallaxes of massive star-forming regions: III. G59.7+0.1 and
W 51
IRS2. 		XU Y., REID M.J., MENTEN K.M., et al.
2009ApJ...694...84I 37           X         1 20 32 Physical conditions in the ionized gas of 30 Doradus. INDEBETOUW R., DE MESSIERES G.E., MADDEN S., et al.
2009ApJ...696.1278P viz 75           X         2 276 109 The extended environment of M17: a star formation history. POVICH M.S., CHURCHWELL E., BIEGING J.H., et al.
2009ApJ...698.1422Z 476     A     X C F     11 6 53 A ring/disk/outflow system associated with W51 North: a very massive star in the making. ZAPATA L.A., HO P.T.P., SCHILKE P., et al.
2009ApJ...699.1153R viz 238           X C       5 7 190 Kinematic distances to molecular clouds identified in the Galactic Ring Survey. ROMAN-DUVAL J., JACKSON J.M., HEYER M., et al.
2009ApJ...700..137R 139       D     X         4 35 873 Trigonometric parallaxes of massive star-forming regions. VI. Galactic structure, fundamental parameters, and noncircular motions. REID M.J., MENTEN K.M., ZHENG X.W., et al.
2009AJ....138..489B 262           X         7 14 3 High angular resolution imaging spectroscopy of the galactic ultracompact H II region K3-50A. BLUM R.D. and McGREGOR P.J.
2009A&A...501..539U viz 15       D               2 495 135 The RMS survey. 6 cm continuum VLA observations towards candidate massive YSOs in the northern hemisphere. URQUHART J.S., HOARE M.G., PURCELL C.R., et al.
2009ApJ...701..454K 37           X         1 26 20 Triggered star formation in a double shell near W51A. KANG M., BIEGING J.H., KULESA C.A., et al.
2009A&A...504..429C 374           X C       9 34 42 The p Cygni supergiant [OMN2000] LS1 - implications for the star formation history of W51. CLARK J.S., DAVIES B., NAJARRO F., et al.
2008PASJ...60..991K 42           X         1 14 154 SiO maser observations toward Orion-KL with VERA. KIM M.K., HIROTA T., HONMA M., et al.
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