2025RNAAS...9...85M

Query : 2025RNAAS...9...85M

2025RNAAS...9...85M - Research Notes of the AAS, 9, 85 (2025/April-0)

Determination of the Abundance of Mercury from the Hg II Line at 5677.10 Å. XVIII. HD 53929.

MONIER R.

Abstract (from CDS):

The weak line of Hg II located at 5677.10 Å is not detected in ESPaDOnS spectra of the HgMn star HD 53929. The Hg II feature at 3983.93 Å commonly used to measure the abundance of mercury in HgMn star is present as a very weak feature. The low abundance excess of mercury partly explains why the intrinsically weaker transition at 5677.10 Å is not detected. Abundances of helium, magnesium, phosphorus, sulfur, titanium, chromium, manganese, iron are measured from the synthesis of the several spectral intervals. The new abundances derived here differ from previous determinations because different fundamental parameters, projected rotational velocity, lines and atomic data have been used in this work. Solar upper limits are found for the abundances of strontium, zirconium, yttrium and barium. Inspection of the recent Transiting Exoplanet Survey Satellite lightcurves of HD 53929 shows a complex pattern of variability which might combine rotational and pulsational variability.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Chemically peculiar stars - Manganese stars

Simbad objects: 1

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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 HD 53929 * 07 07 06.4712319600 +04 54 38.091397320 5.52 5.961 6.088     B9III 105 0

Query : 2025RNAAS...9...85M

Basic data :
HD 53929 -- Star
Other object types: otypes_help 		* (HD,AG,...), UV (TD1), NIR (2MASS)
ICRS coord. (ep=J2000) : 		07 07 06.4712319600 +04 54 38.091397320 (Optical) [ 0.0425 0.0388 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		07 04 27.2384489440 +04 59 22.184500739 [ 0.0425 0.0388 90 ]
Gal coord. (ep=J2000) : 		210.3314598694028 +05.7168987659020 [ 0.0425 0.0388 90 ]
Proper motions mas/yr : 		-16.088 -8.093 [0.053 0.045 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 11.20 [1.3] / z(~) 0.000037 [0.000004] / cz 11.20 [1.30]
   B 2006AstL...32..759G
Parallaxes (mas): 		4.4509 [0.0495] A 2020yCat.1350....0G
Spectral type: 		B9III C 1970MmRAS..72..233H
Fluxes (7) :
U 5.52 [~] D 2003AJ....125.2531R
B 5.961 [0.014] D 2000A&A...355L..27H
V 6.088 [0.009] D 2000A&A...355L..27H
G 6.076080 [0.002827] C 2022yCat.1355....0G
J 6.308 [0.020] C 2003yCat.2246....0C
H 6.373 [0.034] C 2003yCat.2246....0C
K 6.368 [0.017] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 706 Display criteria :

Identifiers (28) :
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HD 53929 GSC 00170-03040 SAO 114935 uvby98 100053929
AG+04 910 HIC 34338 SKY# 12785 WEB 6877
ALS 16567 HIP 34338 TD1 9110 YPAC 439
BD+05 1543 HR 2676 TIC 292288128 YZ 0 2071
GC 9394 2MASS J07070646+0454382 TYC 170-3040-1 YZ 4 3519
GCRV 58367 PPM 151953 UBV 6964 Gaia DR2 3152524622542274560
GEN# +1.00053929 Renson 14830 UBV M 12867 Gaia DR3 3152524622542274560

References (105 between 1850 and 2026) (Total 105)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 5    Distance : 3    Rot : 7    Fe/H : 5    Plx : 4    PM : 4    SpT : 6   

   

Observing logs
IUE : 6   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Link by name to the catalogue in VizieR :

HD 53929 AG+04 910 ALS 16567 BD+05 1543 GSC 00170-03040
HIC 34338 HIP 34338 HR 2676 2MASS J07070646+0454382 PPM 151953
SAO 114935 TD1 9110 TYC 170-3040-1 uvby98 100053929 Gaia DR2 3152524622542274560
Gaia DR3 3152524622542274560

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