Variability Catalog of Stars Observed during the TESS Prime Mission

被引：30

作者：

Fetherolf, Tara ^{[1
]}

Pepper, Joshua ^{[2
]}

Simpson, Emilie ^{[1
,3
]}

Kane, Stephen R. ^{[1
]}

Mocnik, Teo ^{[4
]}

English, John Edward ^{[5
]}

Antoci, Victoria ^{[6
,7
]}

Huber, Daniel ^{[8
]}

Jenkins, Jon M. ^{[9
]}

Stassun, Keivan ^{[10
]}

Twicken, Joseph D. ^{[3
,9
]}

Vanderspek, Roland ^{[11
,12
]}

Winn, Joshua N. ^{[13
]}

机构：

[1] Univ Calif Riverside, Dept Earth & Planetary Sci, 900 Univ Ave, Riverside, CA 92521 USA

[2] Lehigh Univ, Dept Phys, 16 Mem Dr East, Bethlehem, PA 18015 USA

[3] SETI Inst, Mountain View, CA 94043 USA

[4] NSFs NOIRLab, Gemini Observ, 670 N Aohoku Pl, Hilo, HI 96720 USA

[5] Univ Calif Irvine, Dept Comp Sci, 6210 Donald Bren Hall, Irvine, CA 92697 USA

[6] Tech Univ Denmark, Natl Space Inst, DTU Space, Elektrovej 328, DK-2800 Lyngby, Denmark

[7] Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus, Denmark

[8] Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA

[9] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[10] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[11] MIT, Dept Phys, Cambridge, MA 02139 USA

[12] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[13] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2023年 / 268卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

ROTATION-ACTIVITY RELATIONSHIP; PERIOD-LUMINOSITY RELATION; SOLAR-LIKE OSCILLATIONS; DELTA-SCUTI STARS; STELLAR-ACTIVITY; VARIABLE-STARS; HABITABLE ZONE; MAIN-SEQUENCE; INPUT CATALOG; LIGHT CURVES;

D O I：

10.3847/1538-4365/acdee5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

During its 2 yr Prime Mission, TESS observed over 232,000 stars at a 2 minute cadence across & SIM;70% of the sky. These data provide a record of photometric variability across a range of astrophysically interesting timescales, probing stellar rotation, stellar binarity, and pulsations. We have analyzed the TESS 2 minute light curves to identify periodic variability on timescales of 0.01-13 days, and explored the results across various stellar properties. We have identified over 46,000 periodic variables with high confidence, and another 38,000 with moderate confidence. These light curves show differences in variability type across the Hertzsprung-Russell diagram, with distinct groupings of rotational, eclipsing, and pulsational variables. We also see interesting patterns across period-luminosity space, with clear correlations between period and luminosity for high-mass pulsators, evolved stars, and contact binary systems, a discontinuity corresponding to the Kraft break, and a lower occurrence of periodic variability in main-sequence stars on timescales of 1.5-2 days. The variable stars identified in this work are cross-identified with several other variability catalogs, from which we find good agreement between the measured periods of variability. There are & SIM;65,000 variable stars that are newly identified in this work, which includes the rotation rates of low-mass stars, high-frequency pulsation periods for high-mass stars, and a variety of giant star variability.

引用

页数：22