A near-infrared interferometric survey of debris-disk stars IV. An unbiased sample of 92 southern stars observed in H band with VLTI/PIONIER

被引：71

作者：

Ertel, S. ^{[1
,2
,3
]}

Absil, O. ^{[4
]}

Defrere, D. ^{[5
]}

Le Bouquin, J-B. ^{[1
,2
]}

Augereau, J-C. ^{[1
,2
]}

Marion, L. ^{[4
]}

Blind, N. ^{[6
]}

Bonsor, A. ^{[7
]}

Bryden, G. ^{[8
]}

Lebreton, J. ^{[9
,10
]}

Milli, J. ^{[1
,2
,3
]}

机构：

[1] Univ Grenoble Alpes, IPAG, F-38000 Grenoble, France

[2] CNRS, IPAG, F-38000 Grenoble, France

[3] European So Observ, Santiago 19, Chile

[4] Univ Liege, Dept Astrophys Geophys & Oceanog, B-4000 Liege, Belgium

[5] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA

[6] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[7] Univ Bristol, Sch Phys, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[8] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[9] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA

[10] CALTECH, NASA Exoplanet Sci Inst, Pasadena, CA 91125 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2014年 / 570卷

关键词：

techniques: interferometric; circumstellar matter; planetary systems; zodiacal dust; MAIN-SEQUENCE STARS; SOLAR-TYPE STARS; AGE-METALLICITY RELATION; A-F STARS; HOT DUST; LITHIUM ABUNDANCES; FAINT COMPANIONS; CHROMOSPHERIC-ACTIVITY; CIRCUMSTELLAR MATERIAL; ROTATIONAL VELOCITIES;

D O I：

10.1051/0004-6361/201424438

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Detecting and characterizing circumstellar dust is a way to study the architecture and evolution of planetary systems. Cold dust in debris disks only traces the outer regions. Warm and hot exozodiacal dust needs to be studied in order to trace regions close to the habitable zone. Aims. We aim to determine the prevalence and to constrain the properties of hot exozodiacal dust around nearby main-sequence stars. Methods. We searched a magnitude-limited (H <= 5) sample of 92 stars for bright exozodiacal dust using our VLTI visitor instrument PIONIER in the H band. We derived statistics of the detection rate with respect to parameters, such as the stellar spectral type and age or the presence of a debris disk in the outer regions of the systems. We derived more robust statistics by combining our sample with the results from our CHARA/FLUOR survey in the K band. In addition, our spectrally dispersed data allowed us to put constraints on the emission mechanism and the dust properties in the detected systems. Results. We find an overall detection rate of bright exozodiacal dust in the H band of 11% (9 out of 85 targets) and three tentative detections. The detection rate decreases from early type to late type stars and increases with the age of the host star. We do not confirm the tentative correlation between the presence of cold and hot dust found in our earlier analysis of the FLUOR sample alone. Our spectrally dispersed data suggest that either the dust is extremely hot or the emission is dominated by the scattered light in most cases. The implications of our results for the target selection of future terrestrial planet-finding missions using direct imaging are discussed.

引用

页数：20

共 164 条

[31] Lithium abundances for 185 main-sequence stars - Galactic evolution and stellar depletion of lithium [J].

Chen, YQ ;

Nissen, PE ;

Benoni, T ;

Zhao, G .

ASTRONOMY & ASTROPHYSICS, 2001, 371 (03) :943-951

[32] FOMALHAUT'S DEBRIS DISK AND PLANET: CONSTRAINING THE MASS OF FOMALHAUT B FROM DISK MORPHOLOGY [J].

Chiang, E. ;

Kite, E. ;

Kalas, P. ;

Graham, J. R. ;

Clampin, M. .

ASTROPHYSICAL JOURNAL, 2009, 693 (01) :734-749

[33] Spitzer observations of the Hyades:: Circumstellar debris disks at 625 Myr of age [J].

Cieza, Lucas A. ;

Cochran, William D. ;

Augereau, Jean-Charles .

ASTROPHYSICAL JOURNAL, 2008, 679 (01) :720-731

[34]

Claret A, 1995, ASTRON ASTROPHYS SUP, V114, P247

[35] FORMATION AND ACCELERATION OF NANO DUST IN THE INNER HELIOSPHERE [J].

Czechowski, A. ;

Mann, I. .

ASTROPHYSICAL JOURNAL, 2010, 714 (01) :89-99

[36] Hot circumstellar material resolved around β Pic with VLTI/PIONIER [J].

Defrere, D. ;

Lebreton, J. ;

Le Bouquin, J. -B. ;

Lagrange, A. -M. ;

Absil, O. ;

Augereau, J. -C. ;

Berger, J. -P. ;

di Folco, E. ;

Ertel, S. ;

Kluska, J. ;

Montagnier, G. ;

Millan-Gabet, R. ;

Traub, W. ;

Zins, G. .

ASTRONOMY & ASTROPHYSICS, 2012, 546

[37] Hot exozodiacal dust resolved around Vega with IOTA/IONIC [J].

Defrere, D. ;

Absil, O. ;

Augereau, J-C. ;

di Folco, E. ;

Berger, J-P. ;

du Foresto, V. Coude ;

Kervella, P. ;

Le Bouquin, J-B. ;

Lebreton, J. ;

Millan-Gabet, R. ;

Monnier, J. D. ;

Olofsson, J. ;

Traub, W. .

ASTRONOMY & ASTROPHYSICS, 2011, 534

[38] Nulling interferometry: impact of exozodiacal clouds on the performance of future life-finding space missions [J].

Defrere, D. ;

Absil, O. ;

Den Hartog, R. ;

Hanot, C. ;

Stark, C. .

ASTRONOMY & ASTROPHYSICS, 2010, 509

[39]

Defrere D., 2012, SPIE C SER, V8442

[40] A near-infrared interferometric survey of debris disk stars -: I.: Probing the hot dust content around ε Eridani and τ Ceti with CHARA/FLUOR [J].

Di Folco, E. ;

Absil, O. ;

Augereau, J.-C. ;

Merand, A. ;

du Foresto, V. Coude ;

Thevenin, F. ;

Defrere, D. ;

Kervella, P. ;

ten Brummelaar, T. A. ;

McAlister, H. A. ;

Ridgway, S. T. ;

Sturmann, J. ;

Sturmann, L. ;

Turner, N. H. .

ASTRONOMY & ASTROPHYSICS, 2007, 475 (01) :243-250

← 1 2 3 4 5 6 7 8 9 10 →