Atomic and molecular data for observations of the interstellar medium with the hubble space telescope

2006 ◽  
pp. 51-68
Author(s):  
Donald C. Morton
Keyword(s):  
Interstellar Medium ◽  
Hubble Space Telescope ◽  
Molecular Data ◽  
Space Telescope

scholarly journals The Interstellar Abundance of Lead: Experimental Oscillator Strengths for Pb ii λ1203 and λ1433 and New Detections of Pb ii in the Interstellar Medium

2015 ◽  
Vol 11 (A29A) ◽  
Author(s):  
A. M. Ritchey ◽  
N. Heidarian ◽  
R. E. Irving ◽  
S. R. Federman ◽  
D. G. Ellis ◽  
...  
Keyword(s):  
Interstellar Medium ◽  
Hubble Space Telescope ◽  
Oscillator Strengths ◽  
Interstellar Gas ◽  
Lifetime Measurements ◽  
Space Telescope ◽  
Interstellar Grains ◽  
Imaging Spectrograph ◽  
Theoretical Results ◽  
Beam Foil

AbstractWe present the first experimentally determined oscillator strengths for the Pb ii transitions at 1203.6 Å and 1433.9 Å, obtained from lifetime measurements made using beam-foil techniques. We also present new detections of these lines in the interstellar medium from an analysis of archival spectra acquired by the Space Telescope Imaging Spectrograph onboard the Hubble Space Telescope. Our observations of the Pb ii λ1203 line represent the first detection of this transition in interstellar gas. Our experimental f-values for the Pb ii λ1203 and λ1433 transitions are consistent with recent theoretical results, including our own relativistic calculations, but are significantly smaller than previous values based on older calculations. Our new f-value for Pb ii λ1433 (0.321 ± 0.034) yields an increase in the interstellar abundance of Pb of 0.43 dex over estimates based on the f-value listed by Morton. With our revised f-values, and with our new detections of Pb ii λ1203 and λ1433, we find that the depletion of Pb onto interstellar grains is not nearly as severe as previously thought, and is very similar to the depletions seen for elements such as Zn and Sn, which have similar condensation temperatures.

ALMA detection of the [OIII] 88 μm line in a highly-magnified Lyman break galaxy at z = 6.1

2019 ◽  
Vol 15 (S341) ◽  
pp. 309-311
Author(s):  
Kaho Sunaga ◽  
Yoichi Tamura ◽  
Minju Lee ◽  
Ken Mawatari ◽  
Akio K. Inoue ◽  
...  
Keyword(s):  
Interstellar Medium ◽  
Rest Frame ◽  
Hubble Space Telescope ◽  
Continuum Emission ◽  
Large Telescope ◽  
Space Telescope ◽  
Model Combining ◽  
Very Large Telescope ◽  
Stellar Component ◽  
Two Component

AbstractWe present a 4.7σ detection of the [OIII] 88 μm line in a gravitationally-lensed Lyman break galaxy, RXC J2248-ID3, using the Atacama Large Millimeter/submillimeter Array (ALMA). We did not detect [CII] 158 μm and rest-frame 90 μm dust continuum emission, suggesting that the bulk of the interstellar medium (ISM) is ionized. Our two-component SED model combining the previous Hubble Space Telescope (HST) data and new photometry obtained from Very Large Telescope (VLT), Spitzer and ALMA suggests the presence of young (∼2 Myr) and mature (∼600 Myr) stellar components with the metallicity of Z = 0.2Z⊙. Our findings are in contrast with previous results claiming a very young, metal-poor stellar component.

An AI scheduling environment for the Hubble Space Telescope

1991 ◽  
Author(s):  
JEFFREY SPONSLER ◽  
MARK JOHNSTON ◽  
GLENN MILLER ◽  
ANTHONY KRUEGER ◽  
MICHAEL LUCKS ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope
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