2023RNAAS...7...40M

Query : 2023RNAAS...7...40M

2023RNAAS...7...40M - Research Notes of the AAS, 7, 40 (2023/March-0)

The Behavior of BpSi Stars in the Far UV-Paper I: HD 22920.

MONIER R.

Abstract (from CDS):

The analysis of five spectra of the Bp Si star HD 22920 recorded by the SWP camera on board the International Ultraviolet Explorer reveals variations of the far-ultraviolet flux of this star throughout its recently derived rotation period of 3.947 days. Spectra separated by half of the rotation period show variations of the FUV flux shortwards of 1700 Å. The Si II autoionization lines in the region 1350 to 1460 Å clearly vary in phase with the Si II doublet near 1530 Å. The FUV variations are caused by variations of the FUV Si II continuous and line opacity as spots of overabundant silicon come into the line of sight while the star rotates.

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

Simbad objects: 1

Full paper

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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	* 22 Eri	a2*	03 40 38.3331139440	-05 12 38.555731188	4.81	5.38	5.53			B9IIIpSi4200	134	0

Query : 2023RNAAS...7...40M

Basic data :

* 22 Eri -- alpha2 CVn Variable

* (*,ALS,...), a2* (2009yCat), Pe* (1968PASP), V* (V*), UV (TD1), NIR (2MASS)

03 40 38.3331139440 -05 12 38.555731188 (Optical) [ 0.0738 0.0733 90 ] A 2020yCat.1350....0G

03 38 09.6473589514 -05 22 15.368348036 [ 0.0738 0.0733 90 ]

192.0991350314925 -44.1829613380206 [ 0.0738 0.0733 90 ]

0.494 -5.442 [0.105 0.103 90] A 2020yCat.1350....0G

V(km/s) 17.20 [0.7] / z(~) 0.000057 [0.000002] / cz 17.20 [0.70] A 2006AstL...32..759G

5.2403 [0.0918] A 2020yCat.1350....0G

B9IIIpSi4200 C 1972AJ.....77..750C

U 4.81 [~] C 2002yCat.2237....0D

B 5.38 [~] C 2002yCat.2237....0D

V 5.53 [~] C 2002yCat.2237....0D

G 5.495112 [0.003084] C 2022yCat.1355....0G

J 5.765 [0.017] C 2003yCat.2246....0C

H 5.791 [0.024] C 2003yCat.2246....0C

K 5.872 [0.016] C 2003yCat.2246....0C

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*` 22 Eri`**	`HD 22920`	`SAO 130652`	*`V FY Eri`**
`ALS 16546`	`HIC 17167`	`SKY# 5570`	`WEB 3252`
`BD-05 715`	`HIP 17167`	`TD1 2413`	`YZ 95 903`
`FK5 2260`	`HR 1121`	`TIC 301621458`	`[AKS95] 270`
`GC 4395`	`2MASS J03403833-0512385`	`TYC 4723-1351-1`	`Gaia DR2 3247725252713846528`
`GCRV 2030`	`PPM 186057`	`UBV 3498`	`Gaia DR3 3247725252713846528`
`GEN# +1.00022920`	`Renson 5840`	`UBV M 9634`
`GSC 04723-01351`	`ROT 543`	`uvby98 100022920`

References (134 between 1850 and 2026) (Total 134)
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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`ALS 16546`	`BD-05 715`	`FK5 2260`	`GSC 04723-01351`	`HD 22920`
`HIC 17167`	`HIP 17167`	`HR 1121`	`2MASS J03403833-0512385`	`PPM 186057`
`SAO 130652`	`TD1 2413`	`TYC 4723-1351-1`	`uvby98 100022920`	*`V FY Eri`**
`Gaia DR2 3247725252713846528`	`Gaia DR3 3247725252713846528`

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