Results 71 to 80 of about 1,698,518 (186)

Joint Analysis of H I Absorption Zeeman Measurements and the Morphology of Filamentary H I Emission

The Astrophysical Journal
We present a joint analysis of H I absorption Zeeman measurements and the morphology of filamentary H I emission to investigate the 3D structure of the magnetic field in the diffuse neutral interstellar medium.
Marta Nowotka, Susan E. Clark, Blakesley Burkhart, Laura Fissel, Tao-Chung Ching, Timothy Robishaw, Carl Heiles   +6 more
doaj   +1 more source

Revisiting the Vertical Distribution of H i Absorbing Clouds in the Solar Neighborhood. II. Constraints from a Large Catalog of 21 cm Absorption Observations at High Galactic Latitudes

The Astrophysical Journal
The cold neutral medium (CNM) is where neutral atomic hydrogen (H i ) is converted into molecular clouds, so the structure and kinematics of the CNM are key drivers of galaxy evolution.
Daniel R. Rybarczyk, Trey V. Wenger, Snežana Stanimirović   +2 more
doaj   +1 more source

Extragalactic diffuse neutral hydrogen clouds - Probes of a hot intergalactic medium

The Astrophysical Journal, 1976
Extragalactic diffuse neutral hydrogen clouds constitute a probe of the intergalactic gas by both thermal and dynamical interaction with the surrounding medium. Clouds recently discovered by Mathewson et al. in the Sculptor group place stringent limits on the density and temperature of any intergalactic gas unless the clouds are very highly clumped ...
L. L. Cowie, C. F. McKee
openaire   +1 more source

Identification of Galactic H I Counterpart of the Large [O iii] Emission Structure 1 2 Southeast of M31

The Astronomical Journal
Strottner–Drechsler–Sainty Object 1 (SDSO1) is a faint [O iii ] emission nebula spanning 1 $\mathop{.}\limits^{^\circ }5$ , discovered southeast of M31.
Tiantian Liang, Jie Wang, Tao Wang, Haibo Yuan, Ruoyi Zhang, Zhiyu Zhang, Chao-Wei Tsai, Ping Zhou, Xiaohui Sun, Hu Zou, Yingjie Jing, Chen Xu, Zhipeng Hou, Yann Sainty, Marcel Drechsler, Xavier Strottner, Ziming Liu, Qingze Chen, Zerui Liu   +18 more
doaj   +1 more source

An ellipsoidal mirror for focusing neutral atomic and molecular beams [PDF]

, 2010
Manipulation of atomic and molecular beams is essential to atom optics applications including atom lasers, atom lithography, atom interferometry and neutral atom microscopy.
Galas, J., Sondergard, E., Reisinger, T., Miranda, R., Fladischer, K., Farias, D., Ernst, W.E., Piatkowski, B., Mayrhofer, V., Surma, B., Miros, A., Holst, B., Reingruber, H., Allison, W., Sitarek, S., Allison,, W., Nieto, P., Ross, A.E., Barredo, D., MacLaren, D.A., Litwin, D., Ross A.E., Nieto P., Allison, William, Farías D., Reisinger T., Sitarek S., Barredo D., Miros A., Barredo, Daniel, Søndergård E., Fladischer K., Galas J., Surma B., Ernst W.E., Litwin D., Allison W., Piatkowski B., Miranda, Rodolfo, Nieto, Pablo, Hoist B., MacLaren D.A., Reingruber H., Farías, Daniel, MacLaren, Donald A., Mayrhofer V.   +45 more
core   +1 more source

THE EFFECT OF RAPID NEUTRAL-NEUTRAL REACTIONS ON CHEMICAL-MODELS OF DENSE INTERSTELLAR CLOUDS

, 1994
Recent experiments on rapid neutral-neutral reactions involving the radical CN at low temperature and the neutral C atom at room temperature suggest that atom-neutral and radical-neutral reactions may be generally more rapid at low temperature than ...
Lee, H.H., Howe, D.A., Millar, TJ, Herbst, E.   +3 more
core   +2 more sources

A search for intergalactic clouds of neutral hydrogen [PDF]

Monthly Notices of the Royal Astronomical Society, 1979
J. Materne, W. K. Huchtmeier, A. N. M. Hulsbosch   +2 more
openaire   +1 more source

A supershell model for the high- and intermediate-velocity neutral hydrogen clouds

The Astrophysical Journal, 1993
The velocities and spatial distribution of high- and intermediate-velocity neutral hydrogen gas in the second quadrant of Galactic longitude in the northern hemisphere are accounted for in terms of a model in which the clouds appear to be part of a vast supershell with an elliptical cross section normal to the Galactic disk. Its origin appears to be in
openaire   +1 more source

The Distance to Two Neutral Hydrogen Clouds: The High‐Velocity Complex A and the Low‐Latitude Intermediate‐Velocity Cloud

The Astrophysical Journal, 1996
A lower limit to the distance of the high-velocity cloud (HVC) complex A of 4 kpc (z > 3 kpc) is derived. The HVC is detected toward the Seyfert galaxy Mrk 106 in Mg n ΛΛ2796, 2803 absorption spectra taken with Hubble Space Telescope (HST) proving that Mg+ is present in the cloud.
Bart Wakker, Chris Howk, Ulrich Schwarz, Hugo van Woerden, Timothy Beers, Ronald Wilhelm, Peter Kalberla, Laura Danly   +7 more
openaire   +1 more source

Metallicity Mapping of the Ionized Diffuse Gas at the Milky Way Disk–Halo Interface

The Astrophysical Journal
Metals in the diffuse, ionized gas at the boundary between the Milky Way’s interstellar medium (ISM) and circumgalactic medium, known as the disk–halo interface (DHI), are valuable tracers of the feedback processes that drive the Galactic fountain ...
Bo-Eun Choi, Jessica K. Werk, Kirill Tchernyshyov, J. Xavier Prochaska, Yong Zheng, Mary E. Putman, Drummond B. Fielding, Jay Strader   +7 more
doaj   +1 more source