Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Hollenbach, D. J."'
Autor:
Liseau, R., Goldsmith, P. F., Larsson, B., Pagani, L., Bergman, P., Bourlot, J. Le, Bell, T. A., Benz, A. O., Bergin, E. A., Bjerkeli, P., Black, J. H., Bruderer, S., Caselli, P., Caux, E., Chen, J. -H., de Luca, M., Encrenaz, P., Falgarone, E., Gerin, M., Goicoechea, J. R., Hjalmarson, Å., Hollenbach, D. J., Justtanont, K., Kaufman, M. J., Petit, F. Le, Li, D., Lis, D. C., Melnick, G. J., Nagy, Z., Olofsson, A. O. H., Olofsson, G., Roueff, E., Sandqvist, Aa., Snell, R. L., van der Tak, F. F. S., van Dishoeck, E. F., Vastel, C., Viti, S., Yıldız, U. A.
Models of pure gas-phase chemistry in well-shielded regions of molecular clouds predict relatively high levels of molecular oxygen, O2, and water, H2O. Contrary to expectation, the space missions SWAS and Odin found only very small amounts of water v
Externí odkaz:
http://arxiv.org/abs/1202.5637
Publikováno v:
ApJ 741, 45 (2011)
We use the IRS on Spitzer to observe the southern part of the reflection nebula NGC 2023, including the Southern Ridge, which is a photodissociation region par excellence excited by HD 37903. Five pure-rotational H2 emission lines are detected and ma
Externí odkaz:
http://arxiv.org/abs/1110.4614
Autor:
Dale, D. A., Smith, J. D. T., Schlawin, E. A., Armus, L., Buckalew, B. A., Cohen, S. A., Helou, G., Jarrett, T. H., Johnson, L. C., Moustakas, J., Murphy, E. J., Roussel, H., Sheth, K., Staudaher, S., Bot, C., Calzetti, D., Engelbracht, C. W., Gordon, K. D., Hollenbach, D. J., Kennicutt, R. C., Malhotra, S.
Publikováno v:
Astrophys.J.693:1821-1834,2009
High resolution mid-infrared spectra are presented for 155 nuclear and extranuclear regions from the Spitzer Infrared Nearby Galaxies Survey (SINGS). The fluxes for nine atomic forbidden and three molecular hydrogen mid-infrared emission lines are al
Externí odkaz:
http://arxiv.org/abs/0811.4190
Autor:
Bitner, M. A., Richter, M. J., Lacy, J. H., Herczeg, G. J., Greathouse, T. K., Jaffe, D. T., Salyk, C., Blake, G. A., Hollenbach, D. J., Doppmann, G. W., Najita, J. R., Currie, T.
We report the results of a search for pure rotational molecular hydrogen emission from the circumstellar environments of young stellar objects with disks using the Texas Echelon Cross Echelle Spectrograph (TEXES) on the NASA Infrared Telescope Facili
Externí odkaz:
http://arxiv.org/abs/0808.1099
Autor:
Bendo, G. J., Draine, B. T., Engelbracht, C. W., Helou, G., Thornley, M. D., Bot, C., Buckalew, B. A., Calzetti, D., Dale, D. A., Hollenbach, D. J., Li, A., Moustakas, J.
Publikováno v:
Mon.Not.Roy.Astron.Soc.389:629-650,2008
We investigate the relations among the stellar continuum-subtracted 8 micron polycyclic aromatic hydrocarbon (PAH 8 micron) emission, 24 micron hot dust emission, and 160 micron cold dust emission in fifteen nearby face-on spiral galaxies in the Spit
Externí odkaz:
http://arxiv.org/abs/0806.2758
Autor:
Franklin, J., Snell, R. L., Kaufman, M. J., Melnick, G. J., Neufeld, D. A., Hollenbach, D. J., Bergin, E. A.
We present SWAS detections of the ground-state 1(10)-1(01) transition of o-H2O at 557 GHz in 18 molecular outflows. These results are combined with ground-based observations of the J=1-0 transitions of 12CO and 13CO obtained at the FCRAO and, for a s
Externí odkaz:
http://arxiv.org/abs/0711.2055
HST NICMOS narrowband images of the shocked molecular hydrogen emission in OMC-1 are analyzed to reveal new information on the BN/KL outflow. The outstanding morphological feature of this region is the array of molecular hydrogen ``fingers'' emanatin
Externí odkaz:
http://arxiv.org/abs/0709.2939
Autor:
Roussel, H., Helou, G., Hollenbach, D. J., Draine, B. T., Smith, J. D., Armus, L., Schinnerer, E., Walter, F., Engelbracht, C. W., Thornley, M. D., Kennicutt, R. C., Calzetti, D., Dale, D. A., Murphy, E. J., Bot, C.
Publikováno v:
Astrophys.J.669:959-981,2007
(simplified) Results on the properties of warm H2 in 57 normal galaxies are derived from H2 rotational transitions, obtained as part of SINGS. This study extends previous extragalactic surveys of H2, the most abundant constituent of the molecular ISM
Externí odkaz:
http://arxiv.org/abs/0707.0395
Autor:
Calzetti, D., Kennicutt, R. C., Engelbracht, C. W., Leitherer, C., Draine, B. T., Kewley, L., Moustakas, J., Sosey, M., Dale, D. A., Gordon, K. D., Helou, G. X., Hollenbach, D. J., Armus, L., Bendo, G., Bot, C., Buckalew, B., Jarrett, T., Li, A., Meyer, M., Murphy, E. J., Prescott, M., Regan, M. W., Rieke, G. H., Roussel, H., Sheth, K., Smith, J. D. T., Thornley, M. D., Walter, F.
Publikováno v:
Astrophys.J.666:870-895,2007
With the goal of investigating the degree to which the mid-infrared emission traces the star formation rate (SFR), we analyze Spitzer 8 um and 24 um data of star-forming regions in a sample of 33 nearby galaxies with available HST/NICMOS images in th
Externí odkaz:
http://arxiv.org/abs/0705.3377
Autor:
Draine, B. T., Dale, D. A., Bendo, G., Gordon, K. D., Smith, J. D. T., Armus, L., Engelbracht, C. W., Helou, G., Kennicutt, R. C., Li, A., Roussel, H., Walter, F., Calzetti, D., Moustakas, J., Murphy, E. J., Rieke, G. H., Bot, C., Hollenbach, D. J., Sheth, K., Teplitz, H. I.
Publikováno v:
Astrophys.J.663:866-894,2007
Physical dust models are presented for 65 galaxies in the SINGS survey that are strongly detected in the four IRAC bands and three MIPS bands. For each galaxy we estimate (1) the total dust mass, (2) the fraction of the dust mass contributed by PAHs,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703213