Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Hoq, Sadia"'
Autor:
Hoq, Sadia
The magnetic (B) field is ubiquitous throughout the Milky Way. Several fundamental questions about the B-field in the cool, star-forming interstellar medium (ISM) remain unanswered. In this dissertation, near-infrared (NIR) polarimetric observations
Externí odkaz:
https://hdl.handle.net/2144/20717
Publikováno v:
The Astrophysical Journal, 2017. Vol 836, Number 2, 199
The importance of the magnetic (B) field in the formation of infrared dark clouds (IRDCs) and massive stars is an ongoing topic of investigation. We studied the plane-of-sky B field for one IRDC, G028.23-00.19, to understand the interaction between t
Externí odkaz:
http://arxiv.org/abs/1702.07736
Autor:
Guzmán, Andrés E., Sanhueza, Patricio, Contreras, Yanett, Smith, Howard A., Jackson, James M., Hoq, Sadia, Rathborne, Jill M.
Publikováno v:
ApJ, 815, 130 (2015)
We present dust column densities and dust temperatures for $\sim3000$ young high-mass molecular clumps from the Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey, derived from adjusting single temperature dust emission models to the far-infrare
Externí odkaz:
http://arxiv.org/abs/1511.00762
Autor:
Hoq, Sadia, Clemens, Dan
Stars in open clusters are powerful probes of the intervening Galactic magnetic field, via background starlight polarimetry, because they provide constraints on the magnetic field distances. We use 2MASS photometric data for a sample of 31 clusters i
Externí odkaz:
http://arxiv.org/abs/1509.06777
Autor:
Stephens, Ian W., Jackson, James M., Sanhueza, Patricio, Whitaker, J. Scott, Hoq, Sadia, Rathborne, Jill M., Foster, Jonathan B.
The Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey has detected high-mass star-forming clumps with anomalous N$_2$H$^+$/HCO$^+$(1-0) integrated intensity ratios that are either unusually high ("N$_2$H$^+$ rich") or unusually low ("N$_2$H$^+$
Externí odkaz:
http://arxiv.org/abs/1501.04965
We have developed a maximum-likelihood procedure to fit theoretical isochrones to the observed cluster color-magnitude diagrams of NGC 6866, an open cluster in the Kepler Spacecraft field of view. The Markov-Chain Monte Carlo algorithm permits explor
Externí odkaz:
http://arxiv.org/abs/1403.7208
Autor:
Hoq, Sadia, Jackson, James M., Foster, Jonathan B., Sanhueza, Patricio, Guzman, Andres, Whitaker, J. Scott, Claysmith, Christopher, Rathborne, Jill M., Vasyunina, Tatiana, Vasyunin, Anton
The chemical changes of high-mass star-forming regions provide a potential method for classifying their evolutionary stages and, ultimately, ages. In this study, we search for correlations between molecular abundances and the evolutionary stages of d
Externí odkaz:
http://arxiv.org/abs/1309.3570
Autor:
Foster, Jonathan B., Rathborne, Jill M., Sanhueza, Patricio, Claysmith, Chris, Whitaker, J. Scott, Jackson, James M., Mascoop, Joshua L., Wienen, Marion, Breen, Shari L., Herpin, Fabrice, Duarte-Cabral, Ana, Csengeri, Timea, Contreras, Yanett, Indermuehle, Balt, Barnes, Peter J., Walsh, Andrew J., Cunningham, Maria R., Britton, Tui R., Voronkov, Maxim A., Urquhart, James S., Alves, João, Jordan, Christopher H., Hill, Tracey, Hoq, Sadia, Brooks, Kate J., Longmore, Steven N.
We characterize the Millimeter Astronomy Legacy Team 90 GHz (MALT90) Survey and the Mopra telescope at 90 GHz. We combine repeated position-switched observations of the source G300.968+01.145 with a map of the same source in order to estimate the poi
Externí odkaz:
http://arxiv.org/abs/1306.0560
Autor:
Foster, Jonathan B., Rathborne, Jill M., Jackson, James M., Longmore, Steve N., Whitaker, Scott, Hoq, Sadia
ALMA will revolutionize our understanding of star formation within our galaxy, but before we can use ALMA we need to know where to look. The Millimeter Astronomy Legacy Team 90 GHz (MALT90) Survey is a large international project to map the molecular
Externí odkaz:
http://arxiv.org/abs/1303.3007
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