2019ApJS..245...22W

2019ApJS..245...22W - Astrophys. J., Suppl. Ser., 245, 22-22 (2019/December-0)

This work presents 97 remeasured Fe V wavelengths (1200-1600 Å) and 123 remeasured Ni V wavelengths (1200-1400 Å) with uncertainties of approximately 2 mÅ. An additional 67 remeasured Fe V wavelengths and 72 remeasured Ni V wavelengths with uncertainties greater than 2 mÅ are also reported. A systematic calibration error is also identified in the previous Ni V wavelengths and is corrected in this work. Furthermore, a new energy level optimization of Ni V is presented that includes level values as well as Ritz wavelengths. This work improves upon the available data used for observations of quadruply ionized nickel (Ni V) in white dwarf stars. This compilation is specifically targeted toward observations of the G191-B2B white dwarf spectrum that has been used to test for variations in the fine structure constant, α, in the presence of strong gravitational fields. The laboratory wavelengths for these ions were thought to be the cause of inconsistent conclusions regarding the variation limit of α as observed through the white dwarf spectrum. These inconsistencies can now be addressed with the improved laboratory data presented here.

Journal keyword(s): White dwarf stars - Atomic spectroscopy - Line positions - Ultraviolet astronomy - Laboratory astrophysics - Atomic physics - Spectral line lists

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+52 913	WD*	05 05 30.6180977592	+52 49 51.919301604	10.25	11.44	11.69	11.93	12.108	DA.8	1153	0

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 .

To bookmark this query, right click on this link: simbad:objects in 2019ApJS..245...22W and select 'bookmark this link' or equivalent in the popup menu

`BD+52 913`	`G 191-B2B`	`RE J0505+524`	`WDS J05055+5249B`
` WNO 44B`**	`HIC 23692`	`RX J0505.5+5250`	`WD 0501+527`
`ALS 8157`	`HIP 23692`	`1RXS J050525.8+524913`	`WD 0501+524`
`EGGR 247`	`LS V +52 21`	`1SWASP J050530.60+524951.9`	`[SPB96] 679`
`2EUVE J0505+52.8`	`2MASS J05053062+5249519`	`TIC 327587572`	`[VKN2011] J050530.7+524950`
`EUVE J0505+52.8`	`2RE J0505+524`	`TYC 3734-2324-1`	`Gaia DR2 266077145295627520`
`FB 44`	`2RE J050530+524941`	`USNO 122`	`Gaia DR3 266077145295627520`
`GCRV 21703`	`RE J0505+52`	`uvby98 005200913`
`G 191-2B`	`RE J050530+524929`	`VVO 366`

`BD+52 913`	`ALS 8157`	`EUVE J0505+52.8`	`G 191-2B`	`HIC 23692`
`HIP 23692`	`LS V +52 21`	`2MASS J05053062+5249519`	`2RE J0505+524`	`2RE J050530+524941`
`1RXS J050525.8+524913`	`TYC 3734-2324-1`	`uvby98 005200913`	`WDS J05055+5249B`	`WD 0501+527`
`WD 0501+524`	`Gaia DR2 266077145295627520`	`Gaia DR3 266077145295627520`