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Supernova remnants, planetary nebulae and the distance to NGC 4214

Astrophysics and Space Science 330:1 (2010) 123-131

Authors:

MA Dopita, D Calzetti, J Maíz Apellániz, WP Blair, KS Long, M Mutchler, BC Whitmore, HE Bond, J MacKenty, B Balick, M Carollo, M Disney, JA Frogel, R O'Connell, D Hall, JA Holtzman, RA Kimble, P McCarthy, F Paresce, A Saha, AR Walker, J Silk, M Sirianni, J Trauger, R Windhorst, E Young

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. © 2010 Springer Science+Business Media B.V.
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Using Data Mining Techniques to Probe the Role of Hydrophobic Residues in Protein Folding and Unfolding Simulations

Chapter in Evolving Application Domains of Data Warehousing and Mining, IGI Global (2010) 258-276

Authors:

Pedro Nuno San-Banto Furtado, Cândida G Silva, Pedro Gabriel Ferreira, Paulo J Azevedo, Rui MM Brito
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X-ray reverberation in 1H 0707-495 revisited

Monthly Notices of the Royal Astronomical Society 408:3 (2010) 1928-1935

Authors:

L Miller, TJ Turner, JN Reeves, V Braito

Abstract:

The narrow-line Seyfert 1 galaxy 1H 0707-495 has previously been identified as showing time lags between flux variations in the soft-energy (0.3-1 keV) and medium-energy (1-4 keV) X-ray bands that oscillate between positive and negative values as a function of the frequency of the mode of variation. Here we measure and analyse the lags also between a harder X-ray band (4-7.5 keV) and the soft and medium bands, using existing XMM-Newton data, and demonstrate that the entire spectrum of lags, considering both the full energy range, 0.3-7.5 keV, and the full frequency range, 10-5≲ν≲ 10-2 Hz, are inconsistent with previous claims of arising as reverberation associated with the inner accretion disc. Instead we demonstrate that a simple reverberation model, in which scattering or reflection is present in all X-ray bands, explains the full set of lags without requiring any ad hoc explanation for the time lag sign changes. The range of time delays required to explain the observed lags extends up to about 1800 s in the hard band. The results are consistent with reverberation caused by scattering of X-rays passing through an absorbing medium whose opacity decreases with increasing energy and that partially covers the source. A high covering factor of absorbing and scattering circumnuclear material is inferred. © 2010 The Authors. Journal compilation © 2010 RAS.
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Planck pre-launch status: The Planck mission

ASTRONOMY & ASTROPHYSICS 520 (2010) ARTN A1

Authors:

JA Tauber, N Mandolesi, J-L Puget, T Banos, M Bersanelli, FR Bouchet, RC Butler, J Charra, G Crone, J Dodsworth, G Efstathiou, R Gispert, G Guyot, A Gregorio, JJ Juillet, J-M Lamarre, RJ Laureijs, CR Lawrence, HU Norgaard-Nielsen, T Passvogel, JM Reix, D Texier, L Vibert, A Zacchei, PAR Ade, N Aghanim, B Aja, E Alippi, L Aloy, P Armand, M Arnaud, A Arondel, A Arreola-Villanueva, E Artal, E Artina, A Arts, M Ashdown, J Aumont, M Azzaro, A Bacchetta, C Baccigalupi, M Baker, M Balasini, A Balbi, AJ Banday, G Barbier, RB Barreiro, M Bartelmann, P Battaglia, E Battaner, K Benabed, J-L Beney, R Beneyton, K Bennett, A Benoit, J-P Bernard, P Bhandari, R Bhatia, M Biggi, R Biggins, G Billig, Y Blanc, H Blavot, JJ Bock, A Bonaldi, R Bond, J Bonis, J Borders, J Borrill, L Boschini, F Boulanger, J Bouvier, M Bouzit, R Bowman, E Breelle, T Bradshaw, M Braghin, M Bremer, D Brienza, D Broszkiewicz, C Burigana, M Burkhalter, P Cabella, T Cafferty, M Cairola, S Caminade, P Camus, CM Cantalupo, B Cappellini, J-F Cardoso, R Carr, A Catalano, L Cayon, M Cesa, M Chaigneau, A Challinor, A Chamballu, JP Chambelland, M Charra, L-Y Chiang, G Chlewicki, PR Christensen, S Church, E Ciancietta, M Cibrario, R Cizeron, D Clements, B Collaudin, J-M Colley, S Colombi, A Colombo, F Colombo, O Corre, F Couchot, B Cougrand, A Coulais, P Couzin, B Crane, B Crill, M Crook, D Crumb, F Cuttaia, U Doerl, P da Silva, R Daddato, C Damasio, L Danese, G d'Aquino, O D'Arcangelo, K Dassas, RD Davies, W Davies, RJ Davis, P De Bernardis, D de Chambure, G de Gasperis, ML De la Fuente, P De Paco, A De Rosa, G De Troia, G De Zotti, M Dehamme, J Delabrouille, J-M Delouis, F-X Desert, G di Girolamo, C Dickinson, E Doelling, K Dolag, I Domken, M Douspis, D Doyle, S Du, D Dubruel, C Dufour, C Dumesnil, X Dupac, P Duret, C Eder, A Elfving, TA Ensslin, P Eng, K English, HK Eriksen, P Estaria, MC Falvella, F Ferrari, F Finelli, A Fishman, S Fogliani, S Foley, A Fonseca, G Forma, O Forni, P Fosalba, J-J Fourmond, M Frailis, C Franceschet, E Franceschi, S Francois, M Frerking, MF Gomez-Renasco, KM Gorski, TC Gaier, S Galeotta, K Ganga, J Garcia Lazaro, A Garnica, M Gaspard, E Gavila, M Giard, G Giardino, G Gienger, Y Giraud-Heraud, J-M Glorian, M Griffin, A Gruppuso, L Guglielmi, D Guichon, B Guillaume, P Guillouet, J Haissinski, FK Hansen, J Hardy, D Harrison, A Hazell, M Hechler, V Heckenauer, D Heinzer, R Hell, S Henrot-Versille, C Hernandez-Monteagudo, D Herranz, JM Herreros, V Hervier, A Heske, A Heurtel, SR Hildebrandt, R Hills, E Hivon, M Hobson, D Hollert, W Holmes, A Hornstrup, W Hovest, RJ Hoyland, G Huey, KM Huffenberger, N Hughes, U Israelsson, B Jackson, A Jaffe, TR Jaffe, T Jagemann, NC Jessen, J Jewell, W Jones, M Juvela, J Kaplan, P Karlman, F Keck, E Keihanen, M King, TS Kisner, P Kletzkine, R Kneissl, J Knoche, L Knox, T Koch, M Krassenburg, H Kurki-Suonio, A Lahteenmaki, G Lagache, E Lagorio, P Lami, J Lande, A Lange, F Langlet, R Lapini, M Lapolla, A Lasenby, M Le Jeune, JP Leahy, M Lefebvre, F Legrand, G Le Meur, R Leonardi, B Leriche, C Leroy, P Leutenegger, SM Levin, PB Lilje, C Lindensmith, M Linden-Vornle, A Loc, Y Longval, PM Lubin, T Luchik, I Luthold, JF Macias-Perez, T Maciaszek, C MacTavish, S Madden, B Maffei, C Magneville, D Maino, A Mambretti, B Mansoux, D Marchioro, M Maris, F Marliani, J-C Marrucho, J Marti-Canales, E Martinez-Gonzalez, A Martin-Polegre, P Martin, C Marty, W Marty, S Masi, M Massardi, S Matarrese, F Matthai, P Mazzotta, A McDonald, P McGrath, A Mediavilla, R Meinhold, J-B Melin, F Melot, L Mendes, A Mennella, C Mervier, L Meslier, M Miccolis, M-A Miville-Deschenes, A Moneti, D Montet, L Montier, J Mora, G Morgante, G Morigi, G Morinaud, N Morisset, D Mortlock, S Mottet, J Mulder, D Munshi, A Murphy, P Murphy, P Musi, J Narbonne, P Naselsky, A Nash, F Nati, P Natoli, B Netterfield, J Newell, M Nexon, C Nicolas, PH Nielsen, N Ninane, F Noviello, D Novikov, I Novikov, IJ O'Dwyer, P Oldeman, P Olivier, L Ouchet, CA Oxborrow, L Perez-Cuevas, L Pagan, C Paine, F Pajot, R Paladini, F Pancher, J Panh, G Parks, P Parnaudeau, B Partridge, B Parvin, JP Pascual, F Pasian, DP Pearson, T Pearson, M Pecora, O Perdereau, L Perotto, F Perrotta, F Piacentini, M Piat, E Pierpaoli, O Piersanti, E Plaige, S Plaszczynski, P Platania, E Pointecouteau, G Polenta, N Ponthieu, L Popa, G Poulleau, T Poutanen, G Prezeau, L Pradell, M Prina, S Prunet, JP Rachen, D Rambaud, F Rame, I Rasmussen, J Rautakoski, WT Reach, R Rebolo, M Reinecke, J Reiter, C Renault, S Ricciardi, P Rideau, T Riller, I Ristorcelli, JB Riti, G Rocha, Y Roche, R Pons, R Rohlfs, D Romero, S Roose, C Rosset, S Rouberol, M Rowan-Robinson, JA Rubino-Martin, P Rusconi, B Rusholme, M Salama, E Salerno, M Sandri, D Santos, JL Sanz, L Sauter, F Sauvage, G Savini, M Schmelzel, A Schnorhk, W Schwarz, D Scott, MD Seiffert, P Shellard, C Shih, M Sias, JI Silk, R Silvestri, R Sippel, GF Smoot, J-L Starck, P Stassi, J Sternberg, F Stivoli, V Stolyarov, R Stompor, L Stringhetti, D Strommen, T Stute, R Sudiwala, R Sugimura, R Sunyaev, J-F Sygnet, M Tuerler, E Taddei, J Tallon, C Tamiatto, M Taurigna, D Taylor, L Terenzi, S Thuerey, J Tillis, G Tofani, L Toffolatti, E Tommasi, M Tomasi, E Tonazzini, J-P Torre, S Tosti, F Touze, M Tristram, J Tuovinen, M Tuttlebee, G Umana, L Valenziano, D Vallee, M van der Vlis, F Van Leeuwen, J-C Vanel, B Van-Tent, J Varis, E Vassallo, C Vescovi, F Vezzu, D Vibert, P Vielva, J Vierra, F Villa, N Vittorio, C Vuerli, LA Wade, AR Walker, BD Wandelt, C Watson, D Werner, M White, SDM White, A Wilkinson, P Wilson, A Woodcraft, B Yoffo, M Yun, V Yurchenko, D Yvon, B Zhang, O Zimmermann, A Zonca, D Zorita
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A Galaxy in the Making

NUMERICAL MODELING OF SPACE PLASMA FLOWS ASTRONUM-2009 429 (2010) 154-159

Authors:

Adrianne Slyz, Julien Devriendt, Leila Powell
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