2009MNRAS.396.2061S

Query : 2009MNRAS.396.2061S

2009MNRAS.396.2061S - Mon. Not. R. Astron. Soc., 396, 2061-2064 (2009/July-2)

Search for rapid spectral feature variations in chemically peculiar star HR4330.

SRIRAGHAVAN S.M. and BABU G.S.D.

Abstract (from CDS):

The chemically peculiar star HR4330 (=HD96707, EP-UMa) was observed using the 2-m Himalayan Chandra Telescope at the Indian Astronomical Observatory, Hanle, India, for studying the variations in its spectral features. It was found that the spectral features of Caii 3933Å and Srii 4077Å were showing rapid variations in their equivalent widths with a periodicity of 0.28 ± 0.02d. Such short-term variations suggest that there could be a dynamically active surface with rapid variation in the conditions of the stellar atmosphere.

Journal keyword(s): diffusion - stars: individual: HR4330

VizieR on-line data: <Available at CDS (J/MNRAS/396/2061): table3.dat>

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	V* EP UMa	a2*	11 09 39.7864853928	+67 12 36.756332280		6.278	6.061			A7IVpSr	88	0

Query : 2009MNRAS.396.2061S

Basic data :

V* EP UMa -- alpha2 CVn Variable

a2* (), * (HD,AG,...), PM* (2018yCat), V* (V*), UV (TD1), NIR (2MASS)

11 09 39.7864853928 +67 12 36.756332280 (Optical) [ 0.0202 0.0214 90 ] A 2020yCat.1350....0G

11 06 30.8496881504 +67 28 54.449351828 [ 0.0202 0.0214 90 ]

137.0629175836193 +47.0280351571768 [ 0.0202 0.0214 90 ]

-87.078 -26.744 [0.028 0.029 90] A 2020yCat.1350....0G

V(km/s) 4.7 [2] / z(~) 0.000016 [0.000007] / cz 4.70 [2.00] E 1953GCRV..C......0W

9.2341 [0.0272] A 2020yCat.1350....0G

A7IVpSr D 1995ApJS...99..135A

B 6.278 [0.014] D 2000A&A...355L..27H

V 6.061 [0.009] D 2000A&A...355L..27H

G 6.038603 [0.002787] C 2020yCat.1350....0G

J 5.574 [0.024] C 2003yCat.2246....0C

H 5.534 [0.020] C 2003yCat.2246....0C

K 5.495 [0.020] C 2003yCat.2246....0C

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`HD 96707`	`GSC 04152-01341`	`Renson 27890`	`UBV M 16812`
`AG+67 493`	`HIC 54540`	`SAO 15414`	`uvby98 100096707`
`BD+68 632`	`HIP 54540`	`SKY# 21285`	*`V EP UMa`**
`GC 15332`	`HR 4330`	`TD1 15399`	`WEB 9844`
`GCRV 6857`	`2MASS J11093978+6712368`	`TIC 147949646`	`Gaia DR2 1059387566556243584`
`GEN# +1.00096707`	`PPM 17740`	`TYC 4152-1341-1`	`Gaia DR3 1059387566556243584`

References (88 between 1850 and 2026) (Total 88)
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 96707`	`AG+67 493`	`BD+68 632`	`GSC 04152-01341`	`HIC 54540`
`HIP 54540`	`HR 4330`	`2MASS J11093978+6712368`	`PPM 17740`	`SAO 15414`
`TD1 15399`	`TYC 4152-1341-1`	`uvby98 100096707`	*`V EP UMa`**	`Gaia DR2 1059387566556243584`
`Gaia DR3 1059387566556243584`

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