2009PASP..121..478K

Query : 2009PASP..121..478K

2009PASP..121..478K - Publ. Astron. Soc. Pac., 121, 478-484 (2009/May-0)

A photometric study of ZZ Microscopium.

KIM C. and MOON B.-K.

Abstract (from CDS):

New photometric (uvbyβ) observations of ZZ Mic are described. Reddening values and were derived from the photometry. Intrinsic and values indicate a mean effective temperature of and a mean surface gravity of. Theoretical evolutionary tracks yielded a mass of and an age of 0.56 Gyr. However, the pulsation mass was determined as. ZZ Mic in most respects resembles a typical Population I dwarf Cepheid. We collected 34 times of maximum light from the literature and our observation in order to investigate the variations of the values, and we confirmed a sign that the period is increasing.

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Journal keyword(s): Stars

Simbad objects: 9

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Number of rows : 9
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 GD 428 SX* 03 47 19.8773016336 +63 22 42.150015336   13.10   13.26   ~ 104 0
2 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
3 V* AI Vel dS* 08 14 05.1459825192 -44 34 32.854644660   6.98 6.70     A9IV/V 192 0
4 V* V2314 Oph dS* 17 44 03.6257455416 +06 03 42.497438940   7.76 7.43     A2 34 0
5 HD 199709 * 21 00 24.9948415704 -42 43 12.221653368   10.68 10.17     F8/G0V 10 0
6 V* ZZ Mic dS* 21 00 35.1958990416 -42 39 20.297009304   9.64 9.43     A5/7IV 74 0
7 V* CY Aqr SX* 22 37 47.8520659536 +01 32 03.805667412 10.75 10.61 10.44     B8 218 0
8 V* SX Phe SX* 23 46 32.8928138474 -41 34 54.769886474   7.54 7.31     A3V 348 0
9 V* BQ Psc dS* 23 48 17.9813498112 +00 54 25.107215508           A0 13 0

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