Results 131 to 140 of about 210,358 (255)

Spatially Resolved Star Formation Rate and Dust Attenuation of Nearby Galaxies from CALIFA, GALEX, and WISE Data

open access: yesThe Astrophysical Journal
We study star formation rate (SFR) indicators and dust attenuation of 74 nearby star-forming galaxies on kiloparsec scales, based on GALEX far-ultraviolet (FUV) and WISE mid-infrared (MIR) images with CALIFA optical integral field spectroscopic data.
Jong Chul Lee   +4 more
doaj   +1 more source

The Local Group L-band Survey: Probing Cold Atomic Gas in IC 10 with Neutral Hydrogen Absorption

open access: yesThe Astrophysical Journal
We present the first localized detections of the cold neutral medium (CNM) in IC 10, offering a rare view of dense atomic gas in a low-metallicity ( Z / Z _⊙  ∼ 0.27) dwarf galaxy.
Ioana A. Stelea   +22 more
doaj   +1 more source

An extended XMM-Newton observation of the Seyfert galaxy NGC 4051. I. Evidence for a shocked outflow

open access: yes, 2010
An extended XMM-Newton observation of the Seyfert 1 galaxy NGC 4051 has revealed a rich absorption line spectrum indicating the presence of a photoionized outflow with a wide range of velocities and ionization parameter.
Pounds, K. A., Vaughan, S.
core   +1 more source

Searching for radiative pumping lines of OH masers: II. The 53.3um absorption line towards 1612MHz OH maser sources

open access: yes, 2004
This paper analyzes the 53.3um line in the ISO LWS spectra towards a similar sample of OH/IR sources. We find 137 LWS spectra covering 53.3um and associated with 47 galactic OH/IR sources. Ten of these galactic OH/IR sources are found to show and another
Chen, P. S., He, J. H.
core   +1 more source

Retrieving physical conditions from interstellar H2emission lines: a non linear fitting technique

open access: yesJournal of Physics: Conference Series, 2005
The importance of the formation pumping on the rovibrational level distribution of H2 is revisited. A detailed comparison of different formation mechanisms on dust surfaces and in the gas-phase is carried out, and it is found that dust surface formation dominates the formation pumping.
Silvia Casu, Cesare Cecchi-Pestellini
openaire   +1 more source

JWST Observations of Cosmic-Ray-excited H2 in Barnard 68: Spatial Variations and Constraints on Cosmic-Ray Attenuation

open access: yesThe Astrophysical Journal
We present James Webb Space Telescope (JWST) NIRSpec observations of the starless dark cloud Barnard 68 (B68) that reveal the spatially resolved signature of cosmic-ray-excited molecular hydrogen (CRXH _2 ) emissions for the first time.
David A. Neufeld   +11 more
doaj   +1 more source

Commentary on interstellar matter associated with 18 open clusters [PDF]

open access: yes
Information supplementary to that contained in Section 4 of an article entitled, A CO Survey of Regions Around 34 Open Clusters, (Leisawitz, Bash, and Thaddeus) published in the Astrophysical Journal Supplement Series, Volume 70, Number 4, August 1989 is
Leisawitz, David
core   +1 more source

Ground- and Space-based Dust Observations of VV 191 Overlapping Galaxy Pair

open access: yesThe Astronomical Journal
The Balmer decrement (H α /H β ) provides a constraint on attenuation, the cumulative effects of dust grains in the ISM. The ratio is a reliable spectroscopic tool for deriving the dust properties of galaxies that determine many different quantities such
Clayton Robertson   +14 more
doaj   +1 more source

The first COMPTEL Source Catalogue

open access: yes, 2000
The imaging Compton telescope COMPTEL aboard NASA's Compton Gamma-Ray Observatory has opened the MeV gamma-ray band as a new window to astronomy. COMPTEL provided the first complete all-sky survey in the energy range 0.75 to 30 MeV.
A. Connors   +25 more
core   +2 more sources

Cold Water Emission Cannot Be Used to Infer Depletion of Bulk Elemental Oxygen [O/H] in Disks

open access: yesThe Astrophysical Journal
We reexamine the constraints provided by Herschel Space Observatory data regarding cold water emission from protoplanetary disks. Previous disk models that were used to interpret observed water emission concluded that oxygen (O/H) is depleted by at least
Maxime Ruaud, Uma Gorti
doaj   +1 more source

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