2023RNAAS...7...67M

Query : 2023RNAAS...7...67M

2023RNAAS...7...67M - Research Notes of the AAS, 7, 67 (2023/April-0)

The Behavior of Bp He-weak Stars in the Far UV-Paper IV: HD 28843.

MONIER R.

Abstract (from CDS):

The analysis of five spectra of the Bp He-weak Si star HD 28843 recorded by the SWP camera on board the International Ultraviolet Explorer reveals variations of the far-ultraviolet spectral energy distribution over a time interval of 4 yr and eight months. Variations are present shortwards of 1700 Å which can be partly attributed to variations of lines and continuum of Si II. Other lines due to C II and Si III also contribute to the opacity in this range too. The variations suggest that silicon is not distributed in a uniform manner over the surface and that the horizontal gradients of the silicon abundance are probably quite large.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Chemically peculiar stars - Helium-weak 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 28843 Ro* 04 32 37.5537339576 -03 12 34.344832032 5.13 5.67 5.81     B9III 140 0

Query : 2023RNAAS...7...67M

Basic data :
HD 28843 -- Rotating Variable
Other object types: otypes_help 		* (HD,AGASC,...), ** (**,BDS,...), UV (CEL,TD1), Ro* (2010ApJS), V* (V*), NIR (2MASS)
ICRS coord. (ep=J2000) : 		04 32 37.5537339576 -03 12 34.344832032 (Optical) [ 0.0517 0.0334 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		04 30 07.2796197618 -03 18 51.585097551 [ 0.0517 0.0334 90 ]
Gal coord. (ep=J2000) : 		198.6227043101589 -32.1017929584800 [ 0.0517 0.0334 90 ]
Proper motions mas/yr : 		18.227 -16.177 [0.068 0.054 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 18.40 [7.4] / z(~) 0.000061 [0.000025] / cz 18.40 [7.40]
   D 2007AN....328..889K
Parallaxes (mas): 		5.8958 [0.0608] A 2020yCat.1350....0G
Spectral type: 		B9III C 1970MmRAS..72..233H
Fluxes (7) :
U 5.13 [~] C 2002yCat.2237....0D
B 5.67 [~] C 2002yCat.2237....0D
V 5.81 [~] C 2002yCat.2237....0D
G 5.751262 [0.003368] C 2020yCat.1350....0G
J 5.994 [0.024] C 2003yCat.2246....0C
H 6.088 [0.040] C 2003yCat.2246....0C
K 6.073 [0.020] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 664 Display criteria :

Identifiers (36) :
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HD 28843 GC 5543 MUTA 7 UBV M 10194
** H 664A GCRV 55182 PPM 187047 uvby98 100028843
AGASC 621031000 GEN# +1.00028843 Renson 7380 V* DZ Eri
ALS 16412 GSC 04738-01483 SAO 131279 WDS J04326-0313A
BD-03 809 HIC 21192 SKY# 7041 WEB 4073
BDS 2248 A HIP 21192 TD1 3297 YPAC 352
CCDM J04327-0313A HR 1441 TIC 248688920 YZ 93 1186
CEL 427 IDS 04276-0325 A TYC 4738-1483-1 Gaia DR2 3204585226803914368
CSI-03 809 1 2MASS J04323756-0312343 UBV 4372 Gaia DR3 3204585226803914368

References (140 between 1850 and 2026) (Total 140)
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    Diameter : 1    Distance : 2    Rot : 3    Plx : 4    PM : 5    SpT : 4   

   

Observing logs
IUE : 9   

   

External archives :

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

Link by name to the catalogue in VizieR :

HD 28843 ALS 16412 BD-03 809 CCDM J04327-0313A CEL 427
GSC 04738-01483 HIC 21192 HIP 21192 HR 1441 2MASS J04323756-0312343
PPM 187047 SAO 131279 TD1 3297 TYC 4738-1483-1 uvby98 100028843
V* DZ Eri WDS J04326-0313A Gaia DR2 3204585226803914368 Gaia DR3 3204585226803914368

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