2026RNAAS..10...29M

Query : 2026RNAAS..10...29M

2026RNAAS..10...29M - Research Notes of the AAS, 10, 29 (2026/February-0)

Determination of the Abundance of Mercury from the Hg II Line at 5677.10 Å in Late B-type Stars. XXVIII. HD 19400 (θ Hyi).

MONIER R.

Abstract (from CDS):

The weak line of Hg II located at 5677.10 Å is used to measure the mercury abundance in the late B-type star HD 19400 (θ Hyi). This line is detected at 3σ above the noise in the adjacent continuum. The synthesis of this line confirms a large overabundance of mercury, about +5.30 dex, which agrees very well with the excess derived from the other Hg II line at 3983.93 Å. Spectrum synthesis yields estimates of the abundance deficiencies/excesses for 20 other elements. The following excesses/deficiencies are found: helium (-1.30 dex), carbon (-0.40), oxygen (-0.60), neon (0.00), magnesium (0.00), aluminium (-1.30), silicon (+0.48), phosphorus (+2.30), sulfur (-0.82), calcium (0.00), titanium (0.88), chromium (0.67), manganese (1.83), iron (0.85), gallium (3.00), strontium (+0.70), yttrium (0.60), zirconium (0.00), xenon (+5.00) and barium (+0.00). Most light elements are deficient (except for Si and P), the iron-peak elements are all overabundant, gallium and xenon are very overabundant.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Chemically peculiar stars - Mercury-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 * tet Hyi ** 03 02 15.4488409848 -71 54 08.839047780   5.365 5.499     B8III/IV 102 0

Query : 2026RNAAS..10...29M

Basic data :
* tet Hyi -- Double or Multiple Star
Other object types: otypes_help 		* (*,ALS,...), ** (CCDM,**,...), Ro* (2019ApJ), UV (TD1), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		03 02 15.4488409848 -71 54 08.839047780 (Optical) [ 0.0604 0.0584 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		03 02 08.2348317413 -72 05 51.850879987 [ 0.0604 0.0584 90 ]
Gal coord. (ep=J2000) : 		289.9280268047755 -41.7636136226860 [ 0.0604 0.0584 90 ]
Proper motions mas/yr : 		27.256 16.598 [0.078 0.080 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 12.30 [1.6] / z(~) 0.000041 [0.000005] / cz 12.30 [1.60]
   B 2007AN....328..889K
Parallaxes (mas): 		6.4996 [0.0619] A 2020yCat.1350....0G
Spectral type: 		B8III/IV D 1975MSS...C01....0H
Fluxes (6) :
B 5.365 [0.014] D 2000A&A...355L..27H
V 5.499 [0.009] D 2000A&A...355L..27H
G 5.480086 [0.002893] C 2020yCat.1350....0G
J 5.761 [0.026] C 2003yCat.2246....0C
H 5.864 [0.027] C 2003yCat.2246....0C
K 5.838 [0.026] C 2003yCat.2246....0C
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Identifiers (34) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CCDM J03023-7154AB GCRV 1710 2MASS J03021544-7154090 TYC 9148-1834-1
* tet Hyi GEN# +1.00019400 N30 633 UBV 3016
** FIN 360 GSC 09148-01834 PPM 367896 uvby98 100019400
AKARI-IRC-V1 J0302154-715408 HD 19400 Renson 4850 WDS J03023-7154AB
ALS 19789 HIC 14131 ROT 420 WEB 2780
CPC 21.2 421 HIP 14131 SAO 255945 Gaia DR3 4645479443883933824
CPD-72 219 HR 939 SKY# 4552 Gaia DR2 4645479443883933824
FK5 113 IDS 03021-7228 AB TD1 1912
GC 3687 IRAS 03021-7205 TIC 280051467

References (102 between 1850 and 2026) (Total 102)
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 : 4    Distance : 2    Var : 2    Fe/H : 1    Plx : 4    PM : 4    SpT : 2   

   

Observing logs
IUE : 5   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * tet Hyi

Link by name to the catalogue in VizieR :

CCDM J03023-7154AB AKARI-IRC-V1 J0302154-715408 ALS 19789 CPD-72 219 FK5 113
GSC 09148-01834 HD 19400 HIC 14131 HIP 14131 HR 939
IRAS 03021-7205 2MASS J03021544-7154090 PPM 367896 SAO 255945 TD1 1912
TYC 9148-1834-1 uvby98 100019400 WDS J03023-7154AB Gaia DR3 4645479443883933824 Gaia DR2 4645479443883933824

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