Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J. Scott Whitaker"'
Autor:
James M. Jackson, J. Scott Whitaker, Edward Chambers, Robert Simon, Cristian Guevara, David Allingham, Philippa Patterson, Nicholas Killerby-Smith, Jacob Askew, Thomas Vandenberg, Howard A. Smith, Patricio Sanhueza, Ian W. Stephens, Lars Bonne, Fiorella L. Polles, Anika Schmiedeke, Netty Honigh, Matthias Justen
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 187 (2024)
Using the upGREAT instrument on board the Stratospheric Observatory for Infrared Astronomy, we imaged [C ii ] 157.74 and [O i ] 63.18 μ m line emission from a bright photodissociation region (PDR) associated with an ionized bubble located in the Nes
Externí odkaz:
https://doaj.org/article/c6acca09c3784b24a39a254e8e05e00a
Autor:
David Allingham, Ian W. Stephens, J. Scott Whitaker, Andrés E. Guzmán, Nicholas Killerby-Smith, Taylor Hogge, Patricio Sanhueza, Kathleen E. Kraemer, James M. Jackson
G23.33-0.30 is a 600 $M_{\odot}$ infrared dark molecular filament that exhibits large NH$_3$ velocity dispersions ($\sigma \sim 8 \ \rm{km \ s^{-1}}$) and bright, narrow NH$_3$(3,3) line emission. We have probed G23.33-0.30 at the $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94e74d91e4cd0a5421d381c713037c7e
http://arxiv.org/abs/1910.13070
http://arxiv.org/abs/1910.13070
Autor:
David Allingham, James M. Jackson, Qizhou Zhang, J. Scott Whitaker, Andrés E. Guzmán, Jill Rathborne, Ian W. Stephens, Yanett Contreras, Steven N. Longmore, Patricio Sanhueza
Publikováno v:
Astrophysical Journal, 869(2), 102
Astrophysical Journal
Astrophysical Journal
Exactly how high-mass star clusters form, especially the young massive clusters (YMCs: age $10^4$ solar masses), remains an open problem, largely because they are so rare that examples of their cold, dense, molecuar progenitors remain elusive. The mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea0722540cd2839a8b8f62d80a179c53
Autor:
Jonathan B. Foster, Sadia Hoq, Jill Rathborne, J. Scott Whitaker, James Jackson, Patricio Sanhueza, Ian W. Stephens
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1db06261094cb45cea2133e5be0e9f64
http://arxiv.org/abs/1501.04965
http://arxiv.org/abs/1501.04965
Autor:
James M. Jackson, Jonathan B. Foster, J. Scott Whitaker, Jill Rathborne, Ian W. Stephens, Yanett Contreras, Patricio Sanhueza, Steven N. Longmore
Publikováno v:
ASTRONOMICAL JOURNAL (0004-6256)
ASTRONOMICAL JOURNAL (0004-6256), 154, 140
ASTRONOMICAL JOURNAL (0004-6256), 154, 140
Using molecular-line data from the Millimetre Astronomy Legacy Team 90 GHz Survey (MALT90), we have estimated kinematic distances to 1905 molecular clumps identified in the ATLASGAL 870 μm continuum survey over the longitude range 295° < l < 350°.
Autor:
J. Scott Whitaker, Yanett Contreras, Jill Rathborne, Andrés E. Guzmán, Jonathan B. Foster, Patricio Sanhueza, James M. Jackson, Ian W. Stephens
Publikováno v:
The Astrophysical Journal. 824:29
In a survey of 65 galaxies, Gao & Solomon (2004) found a tight linear relation between the infrared luminosity ($L_{\rm{IR}}$, a proxy for the star formation rate) and the HCN(1-0) luminosity ($L_{\rm{HCN}}$). Wu et al. (2005, 2010) found that this r
Autor:
Jonathan B. Foster, Andrés E. Guzmán, Jill Rathborne, Tatiana Vasyunina, Christopher Claysmith, J. Scott Whitaker, Patricio Sanhueza, James M. Jackson, Sadia Hoq, Anton Vasyunin
Publikováno v:
Astrophysical Journal
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
Autor:
Taylor G. Hogge, James M. Jackson, David Allingham, Andres E. Guzman, Nicholas Killerby-Smith, Kathleen E. Kraemer, Patricio Sanhueza, Ian W. Stephens, J. Scott Whitaker
Publikováno v:
Astrophysical Journal; 12/10/2019, Vol. 887 Issue 1, p1-1, 1p
Asymmetric Line Profiles in Dense Molecular Clumps Observed in MALT90: Evidence for Global Collapse.
Autor:
James M. Jackson, J. Scott Whitaker, J. M. Rathborne, J. B. Foster, Y. Contreras, Patricio Sanhueza, Ian W. Stephens, S. N. Longmore, David Allingham
Publikováno v:
Astrophysical Journal; 1/1/2019, Vol. 870 Issue 1, p1-1, 1p
Autor:
James M. Jackson, Yanett Contreras, Jill M. Rathborne, J. Scott Whitaker, Andrés Guzmán, Ian W. Stephens, Patricio Sanhueza, Steven Longmore, Qizhou Zhang, David Allingham
Publikováno v:
Astrophysical Journal; 12/20/2018, Vol. 869 Issue 2, p1-1, 1p