2023RNAAS...7....3M

Query : 2023RNAAS...7....3M

2023RNAAS...7....3M - Research Notes of the AAS, 7, 3 (2023/January-0)

The Behavior of HgMn Stars in the Far-UV-Paper 24: HD 159975 (μ Oph).

MONIER R.

Abstract (from CDS):

The analysis of two high resolution spectra of the Hg Mn star HD 159975 recorded by the SWP camera on board the International Ultraviolet Explorer does not reveal variations of the far-ultraviolet flux over a 18 yr time interval. From its effective temperature and surface gravity, HD 155975 appears to have evolved away from the Main Sequence in a theoretical Hertzsprung Russell diagram. It is one of the rare subgiant HgMn stars. Several Si II resonance or low excitation lines are strong absorbers in the mean high resolution SWP spectrum of HD 159975. The Al II resonance line at 1670.79 Å is a strong absorber too. There is no evidence of real variations of the low excitation Si II lines.

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

Journal keyword(s): Chemically peculiar stars - Mercury-manganese stars

CDS comments: Misprint in abstract: using “HD 155975” (G8 star) instead of “HD 159975” (B8 star).

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 * mu. Oph * 17 37 50.7131595894 -08 07 07.578293771 4.53 4.73 4.62 4.44 4.33 B8II((Mn)) 139 1

Query : 2023RNAAS...7....3M

Basic data :
* mu. Oph -- Star
Other object types: otypes_help 		* (2022ApJS,*,...), UV (TD1), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		17 37 50.7131595894 -08 07 07.578293771 (Optical) [ 0.1005 0.0843 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		17 35 07.5039522510 -08 05 23.857233886 [ 0.1005 0.0843 90 ]
Gal coord. (ep=J2000) : 		016.9994641185191 +12.3383942310157 [ 0.1005 0.0843 90 ]
Proper motions mas/yr : 		-10.749 -21.285 [0.109 0.095 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -19.89 [0.60] / z(spectroscopic) -0.000066 [0.000002] / cz -19.89 [0.60]
   (Opt) A 2022yCat.1355....0G
Parallaxes (mas): 		5.0056 [0.1264] A 2020yCat.1350....0G
Spectral type: 		B8II((Mn)) C 1994AJ....107.1556G
Fluxes (9) :
U 4.53 [~] C 2002yCat.2237....0D
B 4.73 [~] C 2002yCat.2237....0D
V 4.62 [~] C 2002yCat.2237....0D
R 4.44 [~] C 2002yCat.2237....0D
G 4.532191 [0.002858] C 2022yCat.1355....0G
I 4.33 [~] C 2002yCat.2237....0D
J 4.23 [~] C 2002yCat.2237....0D
H 4.24 [0.18] D 2003yCat.2246....0C
K 4.14 [~] C 2002yCat.2237....0D
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 767 Display criteria :

Identifiers (33) :
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* 57 Oph GSC 05660-00589 Renson 45060 uvby98 100159975
* mu. Oph HD 159975 ROT 2471 WEB 14553
AKARI-IRC-V1 J1737507-080708 HIC 86284 SAO 141772 YZ 98 5960
ALS 16363 HIP 86284 SKY# 31846 [B10] 4465
BD-08 4472 HR 6567 TD1 20717 Gaia DR2 4168517278355561088
FK5 3399 IRAS 17351-0805 TIC 295092803 Gaia DR3 4168517278355561088
GC 23889 JP11 2873 TYC 5660-589-1
GCRV 10182 2MASS J17375071-0807075 UBV 14997
GEN# +1.00159975 PPM 200882 UBV M 22300

References (139 between 1850 and 2026) (Total 139)
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 : 7    Distance : 2    Rot : 5    Fe/H : 1    Plx : 4    PM : 5    SpT : 6   

   

Observing logs
IUE : 2   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * mu. Oph

Link by name to the catalogue in VizieR :

AKARI-IRC-V1 J1737507-080708 ALS 16363 BD-08 4472 FK5 3399 GSC 05660-00589
HD 159975 HIC 86284 HIP 86284 HR 6567 IRAS 17351-0805
2MASS J17375071-0807075 PPM 200882 SAO 141772 TD1 20717 TYC 5660-589-1
uvby98 100159975 Gaia DR2 4168517278355561088 Gaia DR3 4168517278355561088

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