Zobrazeno 1 - 10
of 3 272
pro vyhledávání: '"Dame, T."'
Autor:
Dame, T. M., Lada, Charles J.
We present a survey of the Perseus molecular cloud in the J $=$ 1$\rightarrow$0 transition of HCN, a widely used tracer of dense molecular gas. The survey was conducted with the CfA 1.2 m telescope, which at 89 GHz has a beam width of 11' and a spect
Externí odkaz:
http://arxiv.org/abs/2301.07623
Autor:
Rybarczyk, Daniel R., Gong, Munan, Stanimirovic, Snezana, Babler, Brian, Murray, Claire E., Winters, Jan Martin, Luo, Gan, Dame, T. M., Steffes, Lucille
We compare observations of HI from the Very Large Array (VLA) and the Arecibo Observatory and observations of HCO$^+$ from the Atacama Large Millimeter/submillimeter Array (ALMA) and the Northern Extended Millimeter Array (NOEMA) in the diffuse ($A_V
Externí odkaz:
http://arxiv.org/abs/2112.05767
Autor:
Rybarczyk, Daniel R., Stanimirovic, Snezana, Gong, Munan, Babler, Brian, Murray, Claire E., Gerin, Maryvonne, Winters, Jan Martin, Luo, Gan, Dame, T. M., Steffes, Lucille
We have complemented existing observations of HI absorption with new observations of HCO$^+$, C$_2$H, HCN, and HNC absorption from the Atacama Large Millimeter/submillimeter Array (ALMA) and the Northern Extended Millimeter Array (NOEMA) in the direc
Externí odkaz:
http://arxiv.org/abs/2109.06273
Autor:
Xu, Y., Bian, S. B., Reid, M. J., Li, J. J., Menten, K. M., Dame, T. M., Zhang, B., Brunthaler, A., Wu, Y. W., Moscadelli, L., Wu, G., Zheng, X. W.
We have measured trigonometric parallaxes for four water masers associated with distant massive young stars in the inner regions of the Galaxy using the VLBA as part of the BeSSeL Survey. G026.50$+$0.28. is located at the near end of the Galactic bar
Externí odkaz:
http://arxiv.org/abs/2101.01454
Autor:
Lada, C. J., Dame, T. M.
We use two existing molecular cloud catalogs derived from the same CO survey and two catalogs derived from local dust extinction surveys to investigate the nature of the GMC mass-size relation in the Galaxy. We find that the four surveys are well des
Externí odkaz:
http://arxiv.org/abs/2006.08632
Autor:
Reid, M. J., Menten, K. M., Brunthaler, A., Zheng, X. W., Dame, T. M., Xu, Y., Li, J., Sakai, N., Wu, Y., Immer, K., Zhang, B., Sanna, A., Moscadelli, L., Rygl, K. L. J., Bartkiewicz, A., Hu, B., Quiroga-Nunez, L. H., van Langevelde, H. J.
We compile and analyze ~200 trigonometric parallaxes and proper motions of molecular masers associated with very young high-mass stars. These measurements strongly suggest that the Milky Way is a four-arm spiral. Fitting log-periodic spirals to the l
Externí odkaz:
http://arxiv.org/abs/1910.03357
Autor:
Wu, Y. W., Reid, M. J., Sakai, N., Dame, T. M., Menten, K. M., Brunthaler, A., Xu, Y., Li, J. J., Ho, B., Zhang, B., Rygl, K. L. J., Zheng, X. W.
As part of the BeSSeL Survey, we report trigonometric parallaxes and proper motions of molecular maser sources associated with 13 distant high mass star forming regions in the Sagittarius spiral arm of the Milky Way. In particular, we obtain improved
Externí odkaz:
http://arxiv.org/abs/1901.09313
Autor:
Xu, Y., Bian, S. B., Reid, M. J., Li, J. J., Zhang, B., Yan, Q. Z., Dame, T. M., Menten, K. M., He, Z. H., Liao, S. L., Tang, Z. H.
Publikováno v:
A&A 616, L15 (2018)
Context. The Gaia mission has released the second data set (Gaia DR2), which contains parallaxes and proper motions for a large number of massive, young stars. Aims. We investigate the spiral structure in the solar neighborhood revealed by Gaia DR2 a
Externí odkaz:
http://arxiv.org/abs/1807.00315
Autor:
Armentrout, W. P., Anderson, L. D., Balser, Dana S., Bania, T. M., Dame, T. M., Wenger, Trey V.
The Outer Scutum-Centaurus (OSC) spiral arm is the most distant molecular spiral arm in the Milky Way, but until recently little was known about this structure. Discovered by Dame and Thaddeus (2011), the OSC lies $\sim$15 kpc from the Galactic Cente
Externí odkaz:
http://arxiv.org/abs/1705.02795
Autor:
Lallement, R., Snowden, S., Kuntz, K. D., Dame, T. M., Koutroumpa, D., Grenier, I., Casandjian, J. M.
Publikováno v:
A&A 595, A131 (2016)
Most models identify the X-ray bright North Polar Spur (NPS) with a hot interstellar (IS) bubble in the Sco-Cen star-forming region at $\simeq$130 pc. An opposite view considers the NPS as a distant structure associated with Galactic nuclear outflows
Externí odkaz:
http://arxiv.org/abs/1609.03813