Search Results - "massive star"

Multi-generation massive star-formation in NGC 3576 by Purcell, C., Minier, V., Longmore, S., André, P., Walsh, Andrew, Jones, P., Herpin, F., Hill, T., Cunningham, M., Burton, M.

“…The same clump exhibits an enhanced abundance of N2H^+, which coupled with an absence of CO indicates depletion onto the dust grain surface.Conclusions: The HII region at the heart of NGC 3576 is potentially triggering the formation of massive stars in the bulk of the associated cloud.…”
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Energy loss fromneutrino oscillations in massive stars / Nor Sofiah Ahmad by Ahmad, Nor Sofiah

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Very massive stars : mass determination and fate / Norhasliza binti Yusof by Yusof, Norhasliza

“…The discovery of very massive stars (VMS, M> 100 M�) in the Milky Way and LMC (Crowther et al., 2010) shows that VMS can form and exist. …”
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The massive star-forming regions omnibus X-ray catalog, second installment by Townsley, L., Broos, P., Garmire, G., Anderson, Gemma, Feigelson, E., Naylor, T., Povich, M.

“…We present the second installment of the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC2), a compilation of X-ray point sources detected in Chandra/ACIS observations of 16 Galactic MSFRs and surrounding fields. …”
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Identification of a population of X-ray-emitting massive stars in the Galactic plane by Anderson, Gemma, Gaensler, B., Kaplan, D., Posselt, B., Slane, P., Murray, S., Mauerhan, J., Benjamin, R., Brogan, C., Chakrabarty, D., Drake, J., Drew, J., Grindlay, J., Hong, J., Lazio, T., Lee, J., Steeghs, D., Van Kerkwijk, M.

“…This may indicate a substantial population of X-ray-emitting massive stars and CWBs in the Milky Way. © 2011. The American Astronomical Society.…”
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Too large and overlooked? Extended free–free emission towards massive star formation regions by Longmore, S., Burton, M., Keto, E., Kurtz, S., Walsh, Andrew

“…We present Australia Telescope Compact Array observations towards six massive star formationregions, which, from their strong 24 GHz continuum emission but no compact 8 GHzcontinuum emission, appeared good candidates for hypercompact HII regions. …”
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Cygnus X-1 contains a 21-solar mass black hole-Implications for massive star winds by Miller-Jones, James, Bahramian, Arash, Orosz, J.A., Mande, I., Gou, L., Maccarone, T.J., Neijsse, C.J., Zhao, X., Ziółkowski, J., Reid, M.J., Uttley, P., Zheng, X., Byun, D.Y., Dodson, R., Grinberg, V., Jung, T., Kim, J.S., Marcote, B., Markoff, S., Rioja, M.J., Rushton, A.P., Russell, D.M., Sivakoff, G.R., Tetarenko, A.J., Tudose, V., Wilms, J.

“…The evolution of massive stars is influenced by the mass lost to stellar winds over their lifetimes. …”
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Electron-positron pair-production and neutrino energy-loss from the instability regions of very massive stars / Lurwan Garba Gaya by Lurwan , Garba Gaya

“…Understanding the end fates of very-massive stars has been very exciting and essential in Astrophysics. …”
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Applications of high-frequency resolution, wide-field VLBI: observations of nearby star-forming galaxies & habitable exoplanetary candidates by Rampadarath, Hayden

“…In addition, I present an independent method to estimate the supernova and massive star-formation rates of star-forming galaxies. …”
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Spectroscopy and multiband photometry of the afterglow of intermediate duration ?-ray burst GRB040924 and its host galaxy by Wiersema, K., van der Horst, A., Kann, D., Rol, E., Starling, R., Curran, Peter, Gorosabel, J., Levan, A., Fynbo, J., de Ugarte Postigo, A., Wijers, R., Castro-Tirado, A., Guziy, S., Hornstrup, A., Hjorth, J., Jelínek, M., Jensen, B., Kidger, M., Martín-Luis, F., Tanvir, N., Tristram, P., Vreeswijk, P.

“…All properties of GRB 040924 (the associated supernova, the spectrum and SED of host and afterglow) are consistentwith an origin in the core-collapse of a massive star.…”
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The science case for simultaneous mm-wavelength receivers in radio astronomy by Dodson, R., Rioja, M., Jung, T., Goméz, J., Bujarrabal, V., Moscadelli, L., Miller-Jones, James, Tetarenko, A., Sivakoff, G.

“…This review arose from the European Radio Astronomy Technical Forum (ERATec) meeting held in Firenze, October 2015, and aims to highlight the breadth and depth of the high-impact science that will be aided and assisted by the use of simultaneous mm-wavelength receivers.Recent results and opportunities are presented and discussed from the fields of: continuum VLBI (observations of weak sources, astrometry, observations of AGN cores in spectral index and Faraday rotation), spectral line VLBI (observations of evolved stars and massive star-forming regions) and time domain observations of the flux variations arising in the compact jets of X-ray binaries.Our survey brings together a large range of important science applications, which will greatly benefit from simultaneous observing at mm-wavelengths. …”
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Kinematics of a Hot Massive Accretion Disk Candidate by Beuther, H., Walsh, Andrew

“…Characterizing rotation, infall, and accretion disks around high-mass protostars is an important topic in massive star formation research. With the Australia Telescope Compact Array and the Very Large Array, we studied a massive disk candidate at high angular resolution in ammonia [NH3(4, 4) and (5, 5)] tracing the warm disk but not the envelope. …”
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Constraining the energy budget of GRB 080721 by Starling, R., Rol, E., van der Horst, A., Yoon, S., Palshin, V., Ledoux, C., Page, K., Fynbo, J., Wiersema, K., Tanvir, N., Jakobsson, P., Guidorzi, C., Curran, Peter, Levan, A., O’Brien, P., Osborne, J., Svinkin, D., de Ugarte Postigo, A., Oosting, T., Howarth, I.

“…The energy constraint we derive can be used as an observational input for models of the progenitors of long GRBs: we discuss how such high collimation-corrected energies could be accommodated with certain parameters of the standard massive star core-collapse models. We can, however, most probably rule out a magnetar progenitor for this GRB which would require 100 per cent efficiency to reach the observed total energy.…”
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The spatial structure of young stellar clusters. I. Subclusters by Kuhn, M., Feigelson, E., Getman, K., Baddeley, Adrian, Broos, P., Sills, A., Bate, M., Povich, M., Luhman, K., Busk, H., Naylor, T., King, R.

“…The clusters of young stars in massive star-forming regions show a wide range of sizes, morphologies, and numbers of stars. …”
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The geometric distance and binary orbit of PSR B1259-63 by Miller-Jones, James, Deller, A., Shannon, Ryan, Dodson, R., Moldón, J., Ribó, M., Dubus, G., Johnston, S., Paredes, J., Ransom, S., Tomsick, J.

“…The pulsar/massive star binary system PSR B1259-63/LS 2883 is one of the best-studied gamma-ray binaries, a class of systems whose bright gamma-ray flaring can provide important insights into high-energy physics. …”
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Gas kinematics in powerful radio galaxies at z ~ 2: Energy supply from star formation, AGN, and radio jets by Nesvadba, N., Drouart, Guillaume, De Breuck, C., Best, P., Seymour, Nick, Vernet, J.

“…As part of the HeRGÉ sample, they also have FIR estimates of the star formation and quasar activity obtained with Herschel/PACS and SPIRE, which enables us to measure the relative energy and momentum release from each of the three main sources of feedback in massive, star-forming AGN host galaxies during their most rapid formation phase. …”
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The astrophysics of star formation across cosmic time at &10 GHz with the square kilometre array by Murphy, E., Sargent, M., Beswick, R., Dickinson, C., Heywood, I., Hunt, L., Hyunh, M., Jarvis, M., Karim, A., Krause, M., Prandoni, I., Seymour, Nick, Schinnerer, E., Tabatabaei, F., Wagg, J.

“…In doing so, surveys carried out at &10 GHz provide a robust, dust-unbiased measurement of the massive star formation rate by being highly sensitive to the number of ionizing photons that are produced. …”
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Multibeam maser survey of methanol and excited OH in the Magellanic Clouds: new detections and maser abundance estimates by Green, J., Caswell, J., Fuller, G., Breen, S., Brooks, K., Burton, M., Chrysostomou, A., Cox, J., Diamond, P., Ellingsen, S., Gray, M., Hoare, M., Masheder, M., McClure-Griffiths, N., Pestalozzi, M., Phillips, C., Quinn, L., Thompson, M., Voronkov, M., Walsh, Andrew, Ward-Thompson, D., Wong-McSweeney, D., Yates, J., Cohen, R.

“…All observations were initiallymade using the Methanol Multibeam (MMB) survey receiver on the 64-m Parkes telescope aspart of the MMB project and accurate positions have been measured with the Australia Telescope Compact Array.We compare the maser populations in the Magellanic Clouds with those of our Galaxy and discuss their implications for the relative rates of massive star formation, heavy metal abundance and the abundance of complex molecules. …”
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Hot diffuse emission in the nuclear starburst region of NGC 2903 by Yukita, M., Swartz, D., Tennant, A., Soria, Roberto, Irwin, J.

“…We interpret the hard component as also being of thermal origin with kTe ~ 3.6 keV and to be directly associated with a wind fluid produced by supernovae and massive star winds similar to the hard diffuse emission seen in the starburst galaxy M82. …”
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Detection of Gamma-Ray Emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi by Abdo, A., Ackermann, M., Ajello, M., Atwood, W., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E., Bonamente, E., Borgland, A., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T., Caliandro, G., Cameron, R., Caraveo, P., Casandjian, J., Cavazzuti, E., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Dermer, C., Deangelis, A., de Palma, F., Digel, S., Do Couto e Silva, E., Drell, P., Drlica-Wagner, A., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S., Focke, W., Foschini, L., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I., Grondin, M., Grove, J., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A., Hayashida, M., Hays, E., Hughes, R., Johannesson, G., Johnson, A., Johnson, R., Johnson, W., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, J., Kocian, M., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M., Lubrano, P., Madejski, G., Makeev, A., Mazziotta, M., McConville, W., McEnery, J., Meurer, C., Michelson, P., Mitthumsiri, W., Mizuno, T., Moiseev, A., Monte, C., Monzani, M., Morselli, A., Moskalenko, I., Murgia, S., Nakamori, T., Nolan, P., Norris, J., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J., Ozaki, M., Paneque, D., Panetta, J., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rodriguez, A., Romani, R., Roth, M., Ryde, F., Sadrozinski, H., Sander, A., Saz Parkinson, P., Scargle, J., Sellerholm, A., Sgro, C., Shaw, M., Smith, D., Smith, P., Spandre, G., Spinelli, P., Strickman, M., Strong, A., Suson, D., Takahashi, H., Tanaka, T., Thayer, J., Thayer, J., Thompson, D., Tibaldo, L., Tibolla, Omar, Torres, D., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A., Wang, P., Winer, B., Wood, K., Ylinen, T., Ziegler, M.

“…The total fluxes of the sources are consistent with gamma-ray emission originating from the interaction of cosmic rays with local interstellar gas and radiation fields and constitute evidence for a link between massive star formation and gamma-ray emission in star-forming galaxies.…”
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