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  • H a emission in local galaxies: star formation, time variability, and the diffuse ionized gas 
    Tacchella, Sandro; Smith, Aaron; Kannan, Rahul; Marinacci, Federico; Hernquist, Lars; Vogelsberger, Mark; Torrey, Paul; Sales, Laura; Li, Hui (2022)
    The nebular recombination line H a is widely used as a star formation rate (SFR) indicator in the local and high-redshift Universe. We present a detailed H a radiative transfer study of high-resolution isolated Milky-Way ...
  • An H a/X-ray orphan cloud as a signpost of intracluster medium clumping 
    Ge, Chong; Luo, Rongxin; Sun, Ming; Yagi, Masafumi; Jáchym, Pavel; Boselli, Alessandro; Fossati, Matteo; Nulsen, Paul E. J.; Sarazin, Craig; Edge, Tim; Gavazzi, Giuseppe; Gaspari, Massimo; Koda, Jin; Komiyama, Yutaka; Yoshida, Michitoshi (2021)
    Recent studies have highlighted the potential significance of intracluster medium (ICM) clumping and its important implications for cluster cosmology and baryon physics. Many of the ICM clumps can originate from infalling ...
  • H I Observations of the Asymptotic Giant Branch Star X Herculis: Discovery of an Extended Circumstellar Wake Superposed on a Compact High-velocity Cloud 
    Matthews, L. D.; Libert, Y.; Gérard, E.; Le Bertre, T.; Johnson, M. C.; Dame, T. M. (2011)
  • H I-to-H<SUB>2</SUB> Transitions in Dust-free Interstellar Gas 
    Sternberg, Amiel; Gurman, Alon; Bialy, Shmuel (2021)
    We present numerical computations and analysis of atomic-to-molecular (H I-to-H<SUB>2</SUB>) transitions in cool (~100 K), low-metallicity, dust-free (primordial) gas in which molecule formation occurs via cosmic-ray-driven ...
  • H II Regions: Witnesses to Massive Star Formation 
    Peters, Thomas; Banerjee, Robi; Klessen, Ralf S.; Mac Low, Mordecai-Mark; Galván-Madrid, Roberto; Keto, Eric R. (2010)
  • H ren bei Welsen mit besonderer Br ksichtigung der Familie Loricariidae 
    Weitzman, Stanley H. (Mergus-Verlag GmbH, 2005)
  • H- photodetachment and radiative attachment for astrophysical applications 
    McLaughlin, B. M.; Stancil, P. C.; Sadeghpour, H. R.; Forrey, R. C. (2017)
    We combine R-matrix calculations, asymptotic relations, and comparison to available experimental data to construct an H<SUP>-</SUP> photodetachment cross section reliable over a large range of photon energies and take into ...
  • H-AMR: A New GPU-accelerated GRMHD Code for Exascale Computing with 3D Adaptive Mesh Refinement and Local Adaptive Time Stepping 
    Liska, Matthew T. P.; Chatterjee, Koushik; Issa, D.; Yoon, D.; Kaaz, N.; Tchekhovskoy, A.; van Eijnatten, D.; Musoke, G.; Hesp, C.; Rohoza, V.; Markoff, S.; Ingram, A.; van der Klis, M. (2022)
    General relativistic magnetohydrodynamic (GRMHD) simulations have revolutionized our understanding of black hole accretion. Here, we present a GPU-accelerated GRMHD code H-AMR with multifaceted optimizations that, collectively, ...
  • H-atmospheres of Icy Super-Earths Formed In Situ in the Outer Solar System: An Application to a Possible Planet Nine 
    Levi, Amit; Kenyon, Scott J.; Podolak, M.; Prialnik, D. (2017)
    We examine the possibility that icy super-Earth mass planets, formed over long timescales (0.1–1 Gyr) at large distances (~200–1000 au) from their host stars, will develop massive H-rich atmospheres. Within the interior ...
  • H. General sketch of the expedition of the <I>Albatross</I>, from February to May, 1891 
    Agassiz, Alexander (1892)
  • H. Hartmann y A. Wetmore y las serpientes del Chagres, 1955 
    Heckadon-Moreno, Stanley (2011)
  • H. Sauter&#39;s Formosa, collection: Xanthopimpla (Ichneum.: Hym.) 
    Cushman, R. A. (1925)
  • H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud (Corrigendum) 
    H. E. S. S. Collaboration; Abramowski, A.; Aharonian, F.; Ait Benkhali, F.; Akhperjanian, A. G.; Angüner, E. O.; Backes, M.; Balenderan, S.; Balzer, A.; Barnacka, A.; Becherini, Y.; Becker Tjus, J.; Berge, D.; Bernhard, S.; Bernlöhr, K.; Birsin, E.; Biteau, J.; Böttcher, M.; Boisson, C.; Bolmont, J.; Bordas, P.; Bregeon, J.; Brun, F.; Brun, P.; Bryan, M.; Bulik, T.; Carrigan, S.; Casanova, S.; Chadwick, P. M.; Chakraborty, N.; Chalme-Calvet, R.; Chaves, R. C. G.; Chrétien, M.; Colafrancesco, S.; Cologna, G.; Conrad, J.; Couturier, C.; Cui, Y.; Davids, I. D.; Degrange, B.; Deil, C.; deWilt, P.; Djannati-Ataï, A.; Domainko, W.; Donath, A.; O'C. Drury, L.; Dubus, G.; Dutson, K.; Dyks, J.; Dyrda, M.; Edwards, T.; Egberts, K.; Eger, P.; Espigat, P.; Farnier, C.; Fegan, S.; Feinstein, F.; Fernandes, M. V.; Fernandez, D.; Fiasson, A.; Fontaine, G.; Förster, A.; Füßling, M.; Gabici, S.; Gajdus, M.; Gallant, Y. A.; Garrigoux, T.; Giavitto, G.; Giebels, B.; Glicenstein, J. F.; Gottschall, D.; Grondin, M. -H; Grudzinska, M.; Hadasch, D.; Häffner, S.; Hahn, J.; Harris, J.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hervet, O.; Hillert, A.; Hinton, J. A.; Hofmann, W.; Hofverberg, P.; Holler, M.; Horns, D.; Ivascenko, A.; Jacholkowska, A.; Jahn, C.; Jamrozy, M.; Janiak, M.; Jankowsky, F.; Jung-Richardt, I.; Kastendieck, M. A.; Katarzynski, K.; Katz, U.; Kaufmann, S.; Khélifi, B.; Kieffer, M.; Klepser, S.; Klochkov, D.; Kluzniak, W.; Kolitzus, D.; Komin, Nu; Kosack, K.; Krakau, S.; Krayzel, F.; Krüger, P. P.; Laffon, H.; Lamanna, G.; Lefaucheur, J.; Lefranc, V.; Lemière, A.; Lemoine-Goumard, M.; Lenain, J. -P; Lohse, T.; Lopatin, A.; Lu, C. -C; Marandon, V.; Marcowith, A.; Marx, R.; Maurin, G.; Maxted, N.; Mayer, M.; McComb, T. J. L.; Méhault, J.; Meintjes, P. J.; Menzler, U.; Meyer, M.; Mitchell, A. M. W.; Moderski, R.; Mohamed, M.; Morå, K.; Moulin, E.; Murach, T.; de Naurois, M.; Niemiec, J.; Nolan, S. J.; Oakes, L.; Odaka, H.; Ohm, S.; Opitz, B.; Ostrowski, M.; Oya, I.; Panter, M.; Parsons, R. D.; Arribas, M. Paz; Pekeur, N. W.; Pelletier, G.; Petrucci, P. -O; Peyaud, B.; Pita, S.; Poon, H.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Raab, S.; Reichardt, I.; Reimer, A.; Reimer, O.; Renaud, M.; de los Reyes, R.; Rieger, F.; Romoli, C.; Rosier-Lees, S.; Rowell, G.; Rudak, B.; Rulten, C. B.; Sahakian, V.; Salek, D.; Sanchez, D. A.; Santangelo, A.; Schlickeiser, R.; Schüssler, F.; Schulz, A.; Schwanke, U.; Schwarzburg, S.; Schwemmer, S.; Sol, H.; Spanier, F.; Spengler, G.; Spies, F.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Stinzing, F.; Stycz, K.; Sushch, I.; Tavernet, J. -P; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tluczykont, M.; Trichard, C.; Valerius, K.; van Eldik, C.; van Soelen, B.; Vasileiadis, G.; Veh, J.; Venter, C.; Viana, A.; Vincent, P.; Vink, J.; Völk, H. J.; Volpe, F.; Vorster, M.; Vuillaume, T.; Wagner, S. J.; Wagner, P.; Wagner, R. M.; Ward, M.; Weidinger, M.; Weitzel, Q.; White, R.; Wierzcholska, A.; Willmann, P.; Wörnlein, A.; Wouters, D.; Yang, R.; Zabalza, V.; Zaborov, D.; Zacharias, M.; Zdziarski, A. A.; Zech, A.; Zechlin, H. -S (2015)
    Not Available
  • H0LiCOW - X. Spectroscopic/imaging survey and galaxy-group identification around the strong gravitational lens system WFI 2033-4723 
    Sluse, D.; Rusu, C. E.; Fassnacht, C. D.; Sonnenfeld, A.; Richard, J.; Auger, M. W.; Coccato, L.; Wong, K. C.; Suyu, S. H.; Treu, T.; Agnello, A.; Birrer, S.; Bonvin, V.; Collett, T.; Courbin, F.; Hilbert, S.; Koopmans, L. V. E.; Tihhanova, O.; Marshall, P. J.; Meylan, G.; Shajib, A. J.; Annis, J.; Avila, S.; Bertin, E.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Castander, F. J.; da Costa, L. N.; De Vicente, J.; Desai, S.; Doel, P.; Evrard, A. E.; Flaugher, B.; Frieman, J.; García-Bellido, J.; Gerdes, D. W.; Goldstein, D. A.; Gruendl, R. A.; Gschwend, J.; Hartley, W. G.; Hollowood, D. L.; Honscheid, K.; James, David J.; Kim, A. G.; Krause, E.; Kuehn, K.; Kuropatkin, N.; Lima, M.; Lin, H.; Maia, M. A. G.; Marshall, J. L.; Melchior, P.; Menanteau, F.; Miquel, R.; Plazas, A. A.; Sanchez, E.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E. C.; Tarle, G. (2019)
    Galaxies and galaxy groups located along the line of sight towards gravitationally lensed quasars produce high-order perturbations of the gravitational potential at the lens position. When these perturbation are too large, ...
  • H2, He, and CO2 line-broadening coefficients, pressure shifts and temperature-dependence exponents for the HITRAN database. Part 1: SO2, NH3, HF, HCl, OCS and C2H2 
    Wilzewski, Jonas S.; Gordon, Iouli E.; Kochanov, Roman V.; Hill, Christian; Rothman, Laurence S. (2016)
    To increase the potential for use of the HITRAN database in astronomy, experimental and theoretical line-broadening coefficients, line shifts and temperature-dependence exponents of molecules of planetary interest broadened ...
  • H2CO and N2H+ in Protoplanetary Disks: Evidence for a CO-ice Regulated Chemistry 
    Qi, Chunhua; Öberg, Karin I.; Wilner, David J. (2013)
    We present Submillimeter Array (SMA) observations of H<SUB>2</SUB>CO and N<SUB>2</SUB>H<SUP>+</SUP> emission in the disks around the T Tauri star
  • H2CO Distribution and Formation in the TW HYA Disk 
    Öberg, Karin I.; Guzmán, Viviana V.; Merchantz, Christopher J.; Qi, Chunhua; Andrews, Sean M.; Cleeves, L. Ilsedore; Huang, Jane; Loomis, Ryan A.; Wilner, David J.; Brinch, Christian; Hogerheijde, Michiel (2017)
    H<SUB>2</SUB>CO is one of the most readily detected organic molecules in protoplanetary disks. Yet its distribution and dominant formation pathway(s) remain largely unconstrained. To address these issues, we present ALMA ...
  • H2CO Ortho-to-para Ratio in the Protoplanetary Disk HD 163296 
    Guzmán, V. V.; Öberg, Karin I.; Carpenter, J.; Le Gal, Romane; Qi, Chunhua; Pagues, J. (2018)
    Ortho-to-para (o/p) ratios of species like water, ammonia, and formaldehyde ({{{H}}}<SUB>2</SUB>{CO}) are believed to encode information about the formation history of the molecule. Measurements of o/p ratios in protoplanetary ...
  • H2D+ in the High-mass Star-forming Region Cygnus X 
    Pillai, T.; Caselli, P.; Kauffmann, J.; Zhang, Qizhou; Thompson, M. A.; Lis, D. C. (2012)
    H<SUB>2</SUB>D<SUP>+</SUP> is a primary ion that dominates the gas-phase chemistry of cold dense gas. Therefore, it is hailed as a unique tool in probing the earliest, prestellar phase of star formation. Observationally, ...
  • H2O emission in high-z ultra-luminous infrared galaxies 
    Omont, A.; Yang, C.; Cox, P.; Neri, R.; Beelen, A.; Bussmann, R. S.; Gavazzi, R.; van der Werf, P.; Riechers, D.; Downes, D.; Krips, M.; Dye, S.; Ivison, R.; Vieira, J. D.; Weiß, A.; Aguirre, J. E.; Baes, M.; Baker, A. J.; Bertoldi, F.; Cooray, A.; Dannerbauer, H.; De Zotti, G.; Eales, S. A.; Fu, H.; Gao, Y.; Guélin, M.; Harris, A. I.; Jarvis, M.; Lehnert, M.; Leeuw, L.; Lupu, R.; Menten, K.; Michalowski, M. J.; Negrello, M.; Serjeant, S.; Temi, P.; Auld, R.; Dariush, A.; Dunne, L.; Fritz, J.; Hopwood, R.; Hoyos, C.; Ibar, E.; Maddox, S.; Smith, M. W. L.; Valiante, E.; Bock, J.; Bradford, C. M.; Glenn, J.; Scott, K. S. (2013)
    Using the IRAM Plateau de Bure interferometer (PdBI), we report the detection of water vapor in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel Astrophysical Terahertz Large ...

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