A photometric study of ZZ microscopium

Chulhee Kim; B. K. Moon

doi:10.1086/599845

A photometric study of ZZ microscopium

Chulhee Kim
, B. K. Moon^*

^*Corresponding author for this work

Earth Science Education

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

2 Scopus citations

Abstract

New photometric (uvbyβ) observations of ZZ Mic are described. Reddening values E(b-y) = 0:00 mag and [Fe/H] = -0.078 were derived from the photometry. Intrinsic (b-y) and c₁ values indicate a mean effective temperature of 〈T_eff〉 = 7780 K and a mean surface gravity of 〈log g〉 = 3:84. Theoretical evolutionary tracks yielded a mass of 1:75 M_⊙ and an age of 0.56 Gyr. However, the pulsation mass was determined as 1:0 M_⊙ 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 O-C values, and we confirmed a sign that the period is increasing.

Original language	English
Pages (from-to)	478-484
Number of pages	7
Journal	Publications of the Astronomical Society of the Pacific
Volume	121
Issue number	879
DOIs	https://doi.org/10.1086/599845
State	Published - 2009.05

Quacquarelli Symonds(QS) Subject Topics

Earth & Marine Sciences
Geophysics
Geology
Physics & Astronomy

Access to Document

10.1086/599845

Cite this

@article{c00cb73e7f2444e2a32307c5eac37bf8,

title = "A photometric study of ZZ microscopium",

abstract = "New photometric (uvbyβ) observations of ZZ Mic are described. Reddening values E(b-y) = 0:00 mag and [Fe/H] = -0.078 were derived from the photometry. Intrinsic (b-y) and c1 values indicate a mean effective temperature of 〈Teff〉 = 7780 K and a mean surface gravity of 〈log g〉 = 3:84. Theoretical evolutionary tracks yielded a mass of 1:75 M⊙ and an age of 0.56 Gyr. However, the pulsation mass was determined as 1:0 M⊙ 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 O-C values, and we confirmed a sign that the period is increasing.",

author = "Chulhee Kim and Moon, \{B. K.\}",

year = "2009",

month = may,

doi = "10.1086/599845",

language = "English",

volume = "121",

pages = "478--484",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

number = "879",

}

TY - JOUR

T1 - A photometric study of ZZ microscopium

AU - Kim, Chulhee

AU - Moon, B. K.

PY - 2009/5

Y1 - 2009/5

N2 - New photometric (uvbyβ) observations of ZZ Mic are described. Reddening values E(b-y) = 0:00 mag and [Fe/H] = -0.078 were derived from the photometry. Intrinsic (b-y) and c1 values indicate a mean effective temperature of 〈Teff〉 = 7780 K and a mean surface gravity of 〈log g〉 = 3:84. Theoretical evolutionary tracks yielded a mass of 1:75 M⊙ and an age of 0.56 Gyr. However, the pulsation mass was determined as 1:0 M⊙ 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 O-C values, and we confirmed a sign that the period is increasing.

AB - New photometric (uvbyβ) observations of ZZ Mic are described. Reddening values E(b-y) = 0:00 mag and [Fe/H] = -0.078 were derived from the photometry. Intrinsic (b-y) and c1 values indicate a mean effective temperature of 〈Teff〉 = 7780 K and a mean surface gravity of 〈log g〉 = 3:84. Theoretical evolutionary tracks yielded a mass of 1:75 M⊙ and an age of 0.56 Gyr. However, the pulsation mass was determined as 1:0 M⊙ 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 O-C values, and we confirmed a sign that the period is increasing.

UR - https://www.scopus.com/pages/publications/67650661327

U2 - 10.1086/599845

DO - 10.1086/599845

M3 - Journal article

AN - SCOPUS:67650661327

SN - 0004-6280

VL - 121

SP - 478

EP - 484

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

IS - 879

ER -

A photometric study of ZZ microscopium

Abstract

Quacquarelli Symonds(QS) Subject Topics

Access to Document

Other files and links

Fingerprint

Cite this