Zobrazeno 1 - 10
of 251
pro vyhledávání: '"SNOW, THEODORE P."'
We discuss the interstellar absorption from many atomic and molecular species seen in high-resolution $HST$/STIS UV and high-S/N optical spectra of the moderately reddened B3-5~V star HD~62542. This remarkable sight line exhibits both very steep far-
Externí odkaz:
http://arxiv.org/abs/2005.10846
Autor:
Fan, Haoyu, Hobbs, L. M., Dahlstrom, Julie A., Welty, Daniel E., York, Donald G., Rachford, Brian, Snow, Theodore P., Sonnentrucker, Paule, Baskes, Noah, Zhao, Gang
Aiming for a new and more comprehensive DIB catalog between 4,000 and 9,000{\AA}, we revisited the Atlas Catalog based on the observations of HD 183143 and HD 204827 (Hobbs et al. 2008 and 2009). Twenty-five medium-to-highly reddened sight lines were
Externí odkaz:
http://arxiv.org/abs/1905.05962
Akademický článek
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Autor:
Fan, Haoyu, Welty, Daniel E., York, Donald G., Sonnentrucker, Paule, Dahlstrom, Julie A., Baskes, Noah, Friedman, Scott D., Hobbs, Lewis M., Jiang, Zihao, Rachford, Brian, Snow, Theodore P., Sherman, Reid, Zhao, Gang
We study the behavior of eight diffuse interstellar bands (DIBs) in different interstellar environments, as characterized by the fraction of hydrogen in molecular form [$f$(H$_2$)], with comparisons to the corresponding behavior of various known atom
Externí odkaz:
http://arxiv.org/abs/1710.06547
We present the first high resolution UV spectra toward Herschel 36, a Trapezium-like system of high-mass stars contained within the Lagoon Nebula (M8, NGC 6523). The spectra reveal extreme ro-vibrational excitation of molecular hydrogen in material a
Externí odkaz:
http://arxiv.org/abs/1404.1648
Autor:
Dahlstrom, Julie, York, Donald G., Welty, Daniel E., Oka, Takeshi, Hobbs, L. M., Johnson, Sean, Friedman, Scott D., Jiang, Zihao, Rachford, Brian L., Sherman, Reid, Snow, Theodore P., Sonnentrucker, Paule
Anomalously broad diffuse interstellar bands (DIBs) at 5780.5, 5797.1, 6196.0, and 6613.6 A are found in absorption along the line of sight to Herschel 36, the star illuminating the bright Hourglass region of the H II region Messier 8. Interstellar a
Externí odkaz:
http://arxiv.org/abs/1305.3003
Autor:
Green, James C., Froning, Cynthia S., Osterman, Steve, Ebbets, Dennis, Heap, Sara H., Linsky, Claus Leitherer Jeffrey L., Savage, Blair D., Sembach, Kenneth, Shull, J. Michael, Siegmund, Oswald H. W., Snow, Theodore P., Spencer, John, Stern, S. Alan, Stocke, John, Welsh, Barry, Beland, Stephane, Burgh, Eric B., Danforth, Charles, France, Kevin, Keeney, Brian, McPhate, Jason, Penton, Steven V., Andrews, John, Brownsberger, Kenneth, Morse, Jon, Wilkinson, Erik
The Cosmic Origins Spectrograph (COS) is a moderate-resolution spectrograph with unprecedented sensitivity that was installed into the Hubble Space Telescope (HST) in May 2009, during HST Servicing Mission 4 (STS-125). We present the design philosoph
Externí odkaz:
http://arxiv.org/abs/1110.0462
Autor:
Friedman, Scott D., York, Donald G., McCall, Benjamin J., Dahlstrom, Julie, Sonnentrucker, Paule, Welty, Daniel E., Drosback, Meredith M., Hobbs, L. M., Rachford, Brian L., Snow, Theodore P.
We establish correlations between equivalent widths of eight diffuse interstellar bands (DIBs), and examine their correlations with atomic hydrogen, molecular hydrogen, and EB-V . The DIBs are centered at \lambda\lambda 5780.5, 6204.5, 6283.8, 6196.0
Externí odkaz:
http://arxiv.org/abs/1011.2951
The {\it Far Ultraviolet Spectroscopic Explorer} ({\it FUSE}) has allowed precise determinations of the column densities of molecular hydrogen ($\Hmol$) in Galactic lines of sight with a wide range of pathlengths and extinction properties. However, s
Externí odkaz:
http://arxiv.org/abs/1001.3815