2018MNRAS.480.4754G

Query : 2018MNRAS.480.4754G

2018MNRAS.480.4754G - Mon. Not. R. Astron. Soc., 480, 4754-4760 (2018/November-2)

Calculated oscillator strengths for the strongest lines of cosmochronological interest in the visible spectrum of singly ionized uranium (U II).

GAMRATH S., PALMERI P. and QUINET P.

Abstract (from CDS):

This work reports new calculations of radiative parameters for spectral lines of cosmochronological interest in singly ionized uranium. More precisely, a pseudo-relativistic Hartree-Fock model including core-polarization effects has been employed to compute the oscillator strengths corresponding to the strongest U II transitions in the visible wavelength range. The results obtained in the present investigation appear to be in reasonable agreement with the most accurate experimental data, reducing in that way the large scattering observed between the formerly published gf values. This allowed us to provide a list of 38 lines that could be used by astrophysicists as cosmochronometers in future studies to determine stellar ages from uranium radioactive decay.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): atomic data - atomic processes

Simbad objects: 1

goto Full paper

goto View the references in ADS

Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 BD-16 251 RG* 01 29 31.1311443552 -16 00 45.495314460 12.527 12.427 11.642 11.189 10.713 CEMP 318 0

Query : 2018MNRAS.480.4754G

Basic data :
BD-16 251 -- Red Giant Branch star
Other object types: otypes_help 		Pe* (2005A&A), * (BD,BPS,...), RG* (2014AJ), NIR (2MASS)
ICRS coord. (ep=J2000) : 		01 29 31.1311443552 -16 00 45.495314460 (Optical) [ 0.0180 0.0122 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		01 27 04.6027183214 -16 16 12.268873684 [ 0.0180 0.0122 90 ]
Gal coord. (ep=J2000) : 		163.3389572597822 -75.8029922918971 [ 0.0180 0.0122 90 ]
Proper motions mas/yr : 		11.738 -42.787 [0.026 0.011 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 139.47 [0.30] / z(spectroscopic) 0.000465 [0.000001] / cz 139.50 [0.30]
   (Opt) A 2018ApJ...858...92H
Parallaxes (mas): 		0.4605 [0.0266] A 2020yCat.1350....0G
Spectral type: 		CEMP C 2018AJ....155..256P
Fluxes (14) :
U 12.527 [0.005] D 2007ApJS..168..128B
B 12.427 [0.012] C 2014AJ....148...81M
V 11.642 [0.018] C 2014AJ....148...81M
R 11.189 [0.001] D 2007ApJS..168..128B
G 11.409827 [0.002777] C 2020yCat.1350....0G
I 10.713 [0.001] D 2007ApJS..168..128B
J 10.053 [0.024] C 2003yCat.2246....0C
H 9.612 [0.023] C 2003yCat.2246....0C
K 9.464 [0.019] C 2003yCat.2246....0C
u (AB) 13.539 [0.005] B 2018PASA...35...10W
g (AB) 11.869 [0.005] B 2018PASA...35...10W
r (AB) 11.444 [0.002] B 2018PASA...35...10W
i (AB) 11.162 [0.008] B 2018PASA...35...10W
z (AB) 11.061 [0.011] C 2018PASA...35...10W
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 150 Display criteria :

Identifiers (10) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

BD-16 251 RAVE J012931.1-160046 TYC 5852-1248-1 Gaia DR1 2451773937663757696
BPS CS 31082-0001 SMSS J012931.13-160045.7 Gaia DR2 2451773941958712192
2MASS J01293113-1600454 TIC 257422252 Gaia DR3 2451773941958712192

References (318 between 1850 and 2026) (Total 318)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements Description of Measurements

Velocities : 11    Distance : 3    Fe/H : 22    Plx : 4    PM : 2    SpT : 3   

   

Observing logs
XMM : 3   

   

External archives :

Link by name to the catalogue in VizieR :

BD-16 251 2MASS J01293113-1600454 RAVE J012931.1-160046 TYC 5852-1248-1 Gaia DR2 2451773941958712192
Gaia DR3 2451773941958712192 Gaia DR1 2451773937663757696

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2018MNRAS.480.4754G and select 'bookmark this link' or equivalent in the popup menu