2023RNAAS...7...46M

Query : 2023RNAAS...7...46M

2023RNAAS...7...46M - Research Notes of the AAS, 7, 46 (2023/March-0)

The Behavior of BpSi Stars in the Far UV-Paper II: HD 9996 (HR 465).

MONIER R.

Abstract (from CDS):

The analysis of IUE spectra of the B9 SiCrEu star HD 9996 recorded by the SWP and the LWP camera on board the International Ultraviolet Explorer collected at two phases of its very long rotational period (separated by Δϕ = 0.40), reveals large variations of the far and mid ultraviolet flux. The FUV flux seems to vary in opposition with the optical brightness recorded by the Fine Error Sensor near the V band. At ultraviolet maximum, the lines of Mg II, Cr II and Fe II are definitely stronger than at minimum, which suggests that these elements are distributed in a non uniform manner on the stellar disk with large horizontal gradients. However, the changing aspect of the magnetic field between the two rotational phases observed could also cause part of the ultraviolet variability.

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

Simbad objects: 1

Full paper

View the references in ADS

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	V* GY And	a2*	01 38 31.8255225672	+45 23 58.935650100		6.343	6.380			A2:VpSiSrCrEu	270	0

Query : 2023RNAAS...7...46M

Basic data :

V* GY And -- alpha2 CVn Variable

* (HD,AG,...), V* (CSV,V*), a2* (2003AstL), SB* (SBC9), UV (TD1), NIR (2MASS)

01 38 31.8255225672 +45 23 58.935650100 (Optical) [ 0.1541 0.1236 90 ] A 2020yCat.1350....0G

01 35 30.4460946742 +45 08 45.432151855 [ 0.1541 0.1236 90 ]

131.5334774223682 -16.6840740767740 [ 0.1541 0.1236 90 ]

-17.292 -1.386 [0.211 0.150 90] A 2020yCat.1350....0G

V(km/s) -4.05 [3.27] / z(spectroscopic) -0.000014 [0.000011] / cz -4.05 [3.27] (Opt) C 2022yCat.1355....0G

7.1093 [0.1589] A 2020yCat.1350....0G

A2:VpSiSrCrEu C 1995ApJS...99..135A

B 6.343 [0.014] D 2000A&A...355L..27H

V 6.380 [0.010] D 2000A&A...355L..27H

G 6.364588 [0.002805] C 2022yCat.1355....0G

J 6.342 [0.018] C 2003yCat.2246....0C

H 6.397 [0.042] C 2003yCat.2246....0C

K 6.430 [0.024] C 2003yCat.2246....0C

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`HD 9996`	`GSC 03278-02505`	`ROT 229`	`UBV 1673`
`AG+45 171`	`HIC 7651`	`SAO 37393`	`uvby98 100009996`
`BD+44 341`	`HIP 7651`	`SBC9 3083`	*`V GY And`**
`CSV 5936`	`HR 465`	`SKY# 2470`	`WEB 1636`
`GC 1977`	`2MASS J01383183+4523589`	`TD1 926`	`Gaia DR2 350556609386670592`
`GCRV 913`	`PPM 44258`	`TIC 327293700`	`Gaia DR3 350556609386670592`
`GEN# +1.00009996`	`Renson 2470`	`TYC 3278-2505-1`

References (270 between 1850 and 2026) (Total 270)
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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`HD 9996`	`AG+45 171`	`BD+44 341`	`GSC 03278-02505`	`HIC 7651`
`HIP 7651`	`HR 465`	`2MASS J01383183+4523589`	`PPM 44258`	`SAO 37393`
`TD1 926`	`TYC 3278-2505-1`	`uvby98 100009996`	*`V GY And`**	`Gaia DR2 350556609386670592`
`Gaia DR3 350556609386670592`

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