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Related papers: ExoMol line lists -- LI. Molecular line list for l…

200 papers

{\it Ab initio} potential energy and dipole moment surfaces are computed for sulfur trioxide (SO$_3$) at the CCSD(T)-F12b level of theory and appropriate triple-zeta basis sets. These surfaces are fitted and used, with a slight correction…

Earth and Planetary Astrophysics · Physics 2017-09-13 Daniel S. Underwood , Jonathan Tennyson , Sergei N. Yurchenko

We explore the origin of the observed Lya and other UV lines from galaxies at z<3.7 by detailed modelling of the spectra. The objects are chosen among those showing a) UV-optical-near-IR lines, b) only UV lines and c) those showing Lya in…

Astrophysics of Galaxies · Physics 2015-04-28 M. Contini

The EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) is a balloon-borne cryogenic telescope that will survey the spectrum of diffuse emission from both the Milky Way and the cosmic web to probe star formation, the…

The depletion of lithium during the pre-main sequence and main sequence phases of stellar evolution plays a crucial role in the comparison of the predictions of big bang nucleosynthesis with the abundances observed in halo stars. In the…

Astrophysics · Physics 2011-05-05 M. H. Pinsonneault , T. P. Walker , G. Steigman , V. K. Narayanan

(Abridged) A large fraction of the gas in galactic haloes has temperatures between 10^4.5 and 10^7 K. At these temperatures, cooling is dominated by metal-line emission if the metallicity Z>~0.1 Zsun. We explore the detectability of several…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Freeke van de Voort , Joop Schaye

In the first section we present the atomic part where a C2+ atomic target was prepared and used to generate theoretical data to investigate recombination lines arising from electron-ion collisions in thin plasma. R-matrix method was used to…

Atomic Physics · Physics 2012-11-07 Taha Sochi

We have observed the four hyperfine components of the 18 cm OH transition toward the translucent cloud eastward of Heiles Cloud 2 (HCL2E), the cold dark cloud L134N, and the photodissociation region of the $\rho$-Ophiuchi molecular cloud…

Astrophysics of Galaxies · Physics 2016-02-18 Yuji Ebisawa , Hiroshi Inokuma , Nami Sakai , Karl M. Menten , Hiroyuki Maezawa , Satoshi Yamamoto

Transmission spectra contain a wealth of information about the atmospheres of transiting exoplanets. However, large thermal and chemical gradients along the line of sight can lead to biased inferences in atmospheric retrievals. In order to…

Earth and Planetary Astrophysics · Physics 2021-12-16 Joost P. Wardenier , Vivien Parmentier , Elspeth K. H. Lee

Turbulent mixing layers (TMLs) are ubiquitous in multiphase gas. They can potentially explain observations of high ions such as O VI, which have significant observed column densities despite short cooling times. Previously, we showed that…

Astrophysics of Galaxies · Physics 2021-09-01 Brent Tan , S. Peng Oh

We observe Arp 220, the nearest Ultra-Luminous Infrared Galaxy (ULIRG), over 4 GHz in the K and Ka bands. We provide constraints for the kinematics,morphology, and identify molecular species on scales resolving both nuclei (0.6" or 230 pc).…

Astrophysics of Galaxies · Physics 2016-12-14 Laura K. Zschaechner , Jürgen Ott , Fabian Walter , David S. Meier , Emmanuel Momjian , Nick Scoville

We have developed a source of cold LiH molecules for Stark deceleration and trapping experiments. Lithium metal is ablated from a solid target into a supersonically expanding carrier gas. The translational, rotational and vibrational…

Atomic Physics · Physics 2009-11-13 S. K. Tokunaga , J. O. Stack , J. J. Hudson , B. E. Sauer , E. A. Hinds , M. R. Tarbutt

In the cores of ellipticals, clusters, and groups of galaxies, the gas has a cooling time shorter than 1 Gyr. It is possible to probe cooling flows through the detection of Fe XVII and O VII emission lines, but so far O VII has not been…

We have determined Li abundances in 55 metal-poor (3.6 < [Fe/H] < -0.7) stars with extreme orbital kinematics. We find the Li abundance in the Li-plateau stars and examine its decrease in low-temperature, low-mass stars. The Li observations…

Astrophysics · Physics 2009-11-13 Ann Merchant Boesgaard , Alex Stephens , Constantine P. Deliyannis

The measurement of oxygen lines in metal-poor unevolved stars, in particular near-UV OH lines, can provide invaluable information on the properties of the Early Galaxy. Near-UV OH lines constitute an important tool to derive oxygen…

Astrophysics of Galaxies · Physics 2015-05-19 J. I. Gonzalez Hernandez , P. Bonifacio , H. -G. Ludwig , E. Caffau , N. T. Behara , B. Freytag

The solar photospheric oxygen abundance has been determined from [OI], OI, OH vibration-rotation and OH pure rotation lines by means of a realistic time-dependent, 3D, hydrodynamical model of the solar atmosphere. In the case of the OI…

Astrophysics · Physics 2009-07-09 M. Asplund , N. Grevesse , A. J. Sauval , C. Allende Prieto , D. Kiselman

The calculation and use of molecular hydrogen optical depth templates to quickly identify and model molecular hydrogen absorption features longward of the Lyman edge at 912 Angstroms are described. Such features are commonly encountered in…

Astrophysics · Physics 2009-11-07 S. R. McCandliss

A high resolution (R = 110.000), very high S/N (>600) spectrum of the metal-poor turnoff star G271-162 has been obtained in connection with the commissioning of UVES at VLT/Kueyen. Using both 1D hydrostatic and 3D hydrodynamical model…

Astrophysics · Physics 2007-05-23 P. E. Nissen , M. Asplund , V. Hill , S. D'Odorico

This work provides the first full set of vibrational and rotational spectral data needed to aid in the detection of AlH$_3$OH$_2$, SiH$_3$OH, and SiH$_3$NH$_2$ in astrophysical or simulated laboratory environments through the use of quantum…

Instrumentation and Methods for Astrophysics · Physics 2021-09-27 A. G. Watrous , B. R. Westbrook , M. C. Davis , Ryan C. Fortenberry

A new molecular hydrogen cloud has been identified at z = 3.025 in the absorption-line spectrum of the quasar 0347-3819 observed with the UVES spectrograph at the VLT/Kueyen telescope. At the same redshift numerous metal lines and the DI…

Astrophysics · Physics 2007-05-23 S. A. Levshakov , P. Molaro , M. Dessauges-Zavadsky , S. D'Odorico

Chemiluminescent radiation of the vibrationally and rotationally excited OH radical, which dominates the nighttime near-infrared emission of the Earth's atmosphere in wide wavelength regions, is an important tracer of the chemical and…

Atmospheric and Oceanic Physics · Physics 2023-01-04 Stefan Noll , Carsten Schmidt , Wolfgang Kausch , Michael Bittner , Stefan Kimeswenger
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