Results 101 to 110 of about 2,644 (226)

A Study of Interstellar Medium in the Line of Sight of Transient Neutron Star Low-Mass X-ray Binary, MXB 1659-298, by Timing and Spectral Analysis

Galaxies
This work is dedicated to the study of interstellar medium (ISM) along the line of sight (LOS) of the transient low-mass X-ray binary, MXB 1659-298, capitalizing the high resolving power of XMM-Newton in the soft energy range.
Rabindra Mahato, Parag Bhattacharya, Monmoyuri Baruah   +2 more
doaj   +1 more source

Ultraviolet interstellar absorption lines in the LMC: Searching for hidden SNRs

The Astronomical Journal, 1994
Strong x-ray emission detected in Large Magellanic Cloud (LMC) superbubbles has been explained as the result of interior supernova remnants (SNRs) hitting the dense superbubble shell. Such SNRs cannot be found using conventional criteria. We thus investigate the possibility of using the interstellar absorption properties in the ultraviolet (UV) as a ...
Y.-H. Chu, B. Wakker, M.-M. Mac Low, G. Garcia-Segura   +3 more
openaire   +1 more source

Assignment of 5069 Å diffuse interstellar band to HC4H+ : disagreement with laboratory absorption band

, 2011
Krelowski et al. have reported a weak, diffuse interstellar band (DIB) at 5069 angstrom which appears to match in both mid-wavelength and width the A(2)Pi(u)-X(2)Pi(g) gas-phase origin absorption band of HC(4)H(+).
F. J. Mazzotti, J. P. Maier, G. A. H. Walker, Bohlender, D. A., C. A. Rice, S. Chakrabarty, Rice, C. A., Dietsche, R., R. Dietsche, Maier, J. P., Walker, G. A. H., Mazzotti, F. J., Chakrabarty, S., D. A. Bohlender   +13 more
core   +1 more source

Optical interstellar absorption lines toward 29 stars

The Astrophysical Journal Supplement Series, 1984
Observations of optical interstellar absorption lines of Ti II, Ca II, and/or Na I acquired at an instrumental resolution typically of 5.6 km/s are reported for 29 stars. The data were recorded primarily with a Digicon detector and achieve 2 sigma detection limits generally near an equivalent width of 1 mA.
openaire   +1 more source

oMEGACat. VII. Tracing Interstellar and Intracluster Medium of ω Centauri Using Sodium Absorptions

The Astrophysical Journal
We investigate the foreground interstellar medium along the line of sight and intracluster medium of ω Centauri ( ω Cen) by measuring the equivalent width of Na I D absorptions from MUSE observations. The large line-of-sight velocity difference between ω
Z. Wang, A. C. Seth, M. Latour, J. Strader, M. Häberle, N. Neumayer, C. Clontz, S. Kamann, M. S. Nitschai, M. Alfaro-Cuello, A. Bellini, A. Feldmeier-Krause, M. Libralato, A. P. Milone, P. J. Smith, S. O. Souza, G. van de Ven   +16 more
doaj   +1 more source

Direct Measurement of Interstellar Extinction toward Young Stars Using Atomic Hydrogen Lyα Absorption [PDF]

, 2014
Interstellar reddening corrections are necessary to reconstruct the intrinsic spectral energy distributions (SEDs) of accreting protostellar systems.
France, Kevin, McJunkin, Matthew, Brown, Alexander, Edwards, Suzan, Herczeg, Gregory J., Schindhelm, Eric, Schneider, P. C., Hillenbrand, Lynne   +7 more
core  

Absorption and Self-absorption of [C ii] and [O i] Far Infrared Lines toward a Bright Bubble in the Nessie Infrared Dark Cloud

The Astrophysical Journal
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 Nessie ...
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   +17 more
doaj   +1 more source

ON THE IDENTIFICATION OF THE $\lambda$-3579 INTERSTELLAR LINE

, 1959
Author Institution: Division of Pure Physics, National Research CouncilThe $^{1} \Pi\rightarrow ^{1}\Sigma$ band system of $CH^{+}$ has been excited in a hollow cathode discharge through helium containing a trace of acetylene and has been photographed ...
Morton, J. R., Douglas, A. E.
core  

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core  

Far Ultraviolet Spectroscopy of the Intergalactic and Interstellar Absorption Toward 3C 273

, 2001
We present Far Ultraviolet Spectroscopic Explorer observations of the molecular, neutral atomic, weakly ionized, and highly ionized components of the interstellar and intergalactic material toward the quasar 3C273. We identify Ly-beta absorption in eight
Kenneth R. Sembach, Savage, Blair D., Sembach, Kenneth R., J. Christopher Howk, Blair D. Savage, William R. Oegerle, J. Michael Shull, Oegerle, William R., Fisher, Richard R., Shull, J. Michael, Howk, J. Christopher   +10 more
core