2016AstBu..71..447R

Query : 2016AstBu..71..447R

2016AstBu..71..447R - Astrophys. Bull., 71, 447-452 (2016)

Magnetic stars with wide depressions in the continuum. 1. The Ap star with strong silicon lines HD5601.

ROMANYUK I.I., KUDRYAVTSEV D.O., SEMENKO E.A. and MOISEEVA A.V.

Abstract (from CDS):

Based on observations with the 6-m SAO RAS telescope, we have found that chemically peculiar star with a large depression of the continuum at 5200 A and strengthened silicon lines in the spectrum has a strong magnetic field. The longitudinal field component B_e has a negative polarity and varies from -300 G to -2000 G with a period of 1.756 days. Photometric variations of brightness take place with the same period. We determined the variability of the radial velocity at times of about tens of years pointing to a possible binarity of the object. We have built a magnetic model of this star, determined the inclination angles of the rotation axis to the line of sight i = 20 deg and of the dipole axis to the rotation axis beta = 116 deg and the field strength at the pole is B p = 10 kG. We carried out a chemical composition analysis and found a lack of helium for almost an order of magnitude, some overabundance of silicon and metal elements for more than an order of magnitude, particularly, cobalt for three orders of magnitude.

Abstract Copyright: ∼

Journal keyword(s): stars - magnetic field - stars - chemically peculiar - stars - individual:HD5601

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

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 EC 11575-1845 HS* 12 00 05.6456553960 -19 02 03.968781864   13.02 13.20 13.51   sdO+dMe 41 1

Query : 2016AstBu..71..447R

Basic data :
EC 11575-1845 -- Hot Subdwarf
Other object types: otypes_help 		* (GSC,UCAC4,...), V* (V*,AAVSO), UV (FAUST,[DBA2001]), HS* (1997MNRAS), EB* (2014ApJS), ** (1997MNRAS), EB? (2018AJ), blu (2022A&A), NIR (2MASS), Opt (ATO)
ICRS coord. (ep=J2000) : 		12 00 05.6456553960 -19 02 03.968781864 (Optical) [ 0.0401 0.0275 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		11 57 32.0333027817 -18 45 22.211260379 [ 0.0401 0.0275 90 ]
Gal coord. (ep=J2000) : 		286.4658478005503 +42.1897789809188 [ 0.0401 0.0275 90 ]
Proper motions mas/yr : 		-6.522 11.232 [0.054 0.031 90] A 2020yCat.1350....0G
Parallaxes (mas): 		2.1382 [0.0531] A 2020yCat.1350....0G
Spectral type: 		sdO+dMe D 1997MNRAS.287..867K
Fluxes (10) :
B 13.02 [0.09] D 2012yCat.1322....0Z
V 13.20 [0.12] D 2012yCat.1322....0Z
R 13.51 [0.13] E 2012yCat.1322....0Z
G 13.086413 [0.015419] C 2020yCat.1350....0G
J 13.372 [0.029] C 2003yCat.2246....0C
H 13.350 [0.033] C 2003yCat.2246....0C
K 13.366 [0.045] C 2003yCat.2246....0C
g 13.03 [0.08] D 2012yCat.1322....0Z
r 13.40 [0.10] D 2012yCat.1322....0Z
i 13.49 [0.42] D 2012yCat.1322....0Z
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notes:

Identifiers (14) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

GSC 06097-00879 FAUST 2976 USNO-A2.0 0675-11833064 Gaia DR3 3566879187238687872
ATO J180.0235-19.0345 2MASS J12000564-1902040 V* TW Crv Gaia DR2 3566879187238687872
CRTS J120005.6-190203 TIC 428683815 [DBA2001] FA34
EC 11575-1845 UCAC4 355-062884 AAVSO 1155-18

References (41 between 1850 and 2026) (Total 41)
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

Distance : 2    Var : 2    Plx : 2    PM : 2    SpT : 1   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : EC 11575-1845

Link by name to the catalogue in VizieR :

GSC 06097-00879 FAUST 2976 2MASS J12000564-1902040 UCAC4 355-062884 USNO-A2.0 0675-11833064
V* TW Crv [DBA2001] FA34 Gaia DR3 3566879187238687872 Gaia DR2 3566879187238687872

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