2020AstBu..75..284K

Query : 2020AstBu..75..284K

2020AstBu..75..284K - Astrophys. Bull., 75, 284-293 (2020/August-0)

Superfast Line Profile Variations in the Spectra of OBA Stars. III. A0 Star alpha^2 CVn. New Results.

KHOLTYGIN A.F., MOISEEVA A.V., YAKUNIN I.A. and HUBRIG S.

Abstract (from CDS):

This work is a continuation of the studies of the ultrafast variability of line profiles in the spectra of early-type stars. Line profile variations in the spectrum a chemically peculiar A0Vp star ?2 CVn are investigated using the January 6, 2020 observations carried out with the 6-meter BTA telescope at SAO RAS equipped with the MSS spectrograph. Regular short-term periodic variations of the H?, FeII, and CrII lines were detected with periods ranging from 4 to 140 minutes. The magnetic field of the star was determined for all observations. The average measured longitudinal magnetic field component over the entire duration of observations is about 600 G, which is close to the value expected from the well-known magnetic field phase curve.

Abstract Copyright: ∼

Journal keyword(s): stars:variability - pulsations - stars: magnetic field - stars: chemically peculiar - stars: individual: alpha^2 CVn - Astrophysics - Solar and Stellar Astrophysics

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	* alf02 CVn	a2*	12 56 01.6655889007	+38 19 06.155170512	2.44	2.76	2.88	2.98	3.05	A0VpSiEu	707	0

Query : 2020AstBu..75..284K

Basic data :

* alf02 CVn -- alpha2 CVn Variable

a2* (), * (HD,*,...), ** (**,ADS,...), PM* (2018yCat,LSPM,...), X (2E,RX,...), IR (IRAS,IRC), Pe* (2012MNRAS), V* (V*), blu (SBS), NIR (2MASS)

12 56 01.6655889007 +38 19 06.155170512 (Optical) [ 0.4303 0.2394 90 ] A 2020yCat.1350....0G

12 53 41.4792363868 +38 35 16.839480950 [ 0.4303 0.2394 90 ]

118.3050120393242 +78.7686100174978 [ 0.4303 0.2394 90 ]

-233.776 55.035 [0.461 0.379 90] A 2020yCat.1350....0G

V(km/s) -4.10 [0.2] / z(~) -0.000014 [0.000001] / cz -4.10 [0.20] A 2006AstL...32..759G

32.7227 [0.5844] A 2020yCat.1350....0G

A0VpSiEu C 1995ApJS...99..135A

U 2.44 [~] C 2002yCat.2237....0D

B 2.76 [~] C 2002yCat.2237....0D

V 2.88 [~] C 2002yCat.2237....0D

R 2.98 [~] C 2002yCat.2237....0D

G 2.904393 [0.004025] C 2022yCat.1355....0G

I 3.05 [~] C 2002yCat.2237....0D

J 3.05 [~] C 2002yCat.2237....0D

H 3.131 [0.186] D 2003yCat.2246....0C

K 3.16 [~] C 2002yCat.2237....0D

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`HD 112413`	`FK5 485`	`LTT 13717`	`SKY# 24037`
*` alf CVn A`**	`GC 17557`	`2MASS J12560168+3819059`	`SRS 30485`
*` alf02 CVn`**	`GCRV 7733`	`N30 2983`	`TIC 17668155`
*` 12 CVn A`**	`GEN# +1.00112413`	`NAME Cor Caroli`	`TYC 3021-2645-1`
` STF 1692A`**	`HGAM 621`	`NLTT 32338`	`UBV 11678`
`ADS 8706 A`	`HIC 63125`	`PLX 2969`	`UBV M 18844`
`AG+38 1225`	`HIP 63125`	`PMC 90-93 344`	`USNO-B1.0 1283-00241520`
`ASCC 494743`	`HR 4915`	`PPM 76815`	`uvby98 100112413`
`BD+39 2580`	`IDS 12514+3851 A`	`Renson 32650`	*`V alf02 CVn`**
`BD+39 2580A`	`IRAS 12536+3835`	`ROT 1913`	`WDS J12560+3819A`
`CCDM J12560+3819A`	`IRAS F12536+3835`	`RX J1256.0+3818`	`WEB 11192`
`CSI+39 2580 1`	`IRC +40239`	`1RXS J125600.6+381856`	`[SS59] I 358`
`2E 2902`	`JP11 2336`	`SAO 63257`	`[ZEH2003] RX J1256.0+3818 1`
`2E 1253.6+3835`	`LSPM J1256+3819`	`SBS 74`	`Gaia DR3 1517698716348324992`

References (707 between 1850 and 2026) (Total 707)
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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : * alf02 CVn

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`HD 112413`	`AG+38 1225`	`BD+39 2580`	`CCDM J12560+3819A`	`2E 2902`
`FK5 485`	`HIC 63125`	`HIP 63125`	`HR 4915`	`IRAS 12536+3835`
`IRAS F12536+3835`	`IRC +40239`	`LSPM J1256+3819`	`2MASS J12560168+3819059`	`NLTT 32338`
`PLX 2969`	`PPM 76815`	`1RXS J125600.6+381856`	`SAO 63257`	`TYC 3021-2645-1`
`USNO-B1.0 1283-00241520`	`uvby98 100112413`	*`V alf02 CVn`**	`WDS J12560+3819A`	`Gaia DR3 1517698716348324992`

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