Debris Disk Evolution Around A Stars

Abstract

We report 24 and/or 70 um measurements of ~160 A-type main-sequence stars using the Multiband Imaging Photometer for Spitzer (MIPS). Their ages range from 5 to 850 Myr based on estimates from the literature (cluster or moving group associations) or from the H-R diagram and isochrones. The thermal infrared excess is identified by comparing the deviation (~3% and ~15% at the 1-σlevel at 24 and 70 um, respectively) between the measurements and the synthetic Kurucz photospheric predictions. Stars showing excess infrared emission due to strong emission lines or extended nebulosity seen at 24 um are excluded from our sample; therefore, the remaining infrared excesses are likely to arise from circumstellar debris disks. At the 3-sigma confidence level, the excess rate at 24 and 70 um is 32% and >=33% (with an uncertainty of 5%), considerably higher than has been found for old solar analogs and M dwarfs. Our measurements place constraints on the fractional dust luminosities and temperatures in the disks. We find that older stars tend to have lower fractional dust luminosity than younger ones. While the fractional luminosity from the excess infrared emission follows a general 1/t relationship, the values at a given stellar age vary by at least two orders of magnitude. We also find that (1) older stars possess a narrow range of temperature distribution peaking at colder temperatures, and (2) the disk emission at 70 um persists longer than that at 24 um. Both results suggest that the debris-disk clearing process is more effective in the inner regions.

17 pages, accepted for publication in ApJ

References in corpus (19)

• A Hipparcos census of the nearby OB associations
• The origin of planetary impactors in the inner solar system
• Analysis of isoplanatic high resolution stellar fields by Starfinder code
• Reduction Algorithms for the Multiband Imaging Photometer for Spitzer
• Spitzer IRS Spectroscopy of IRAS-Discovered Debris Disks
• Frequency of Debris Disks around Solar-Type Stars: First Results from a Spitzer/MIPS Survey
• Age dependence of the Vega Phenomenon: Theory
• The Insignificance of P-R Drag in Detectable Extrasolar Planetesimal Belts
• Incidence and survival of remnant disks around main-sequence stars
• The Vega Debris Disk -- A Surprise from Spitzer
• Dusty Debris Around Solar-Type Stars: Temporal Disk Evolution
• Where Are The M Dwarf Disks Older Than 10 Million Years?
• Membership, lithium, and metallicity in the young open clusters IC 2602 and IC 2391: enlarging the sample
• The Eta Chamaeleontis Cluster: Origin in the Sco-Cen OB Association
• The age dependence of the Vega phenomenon: Observations
• Ages of A-type Vega-like stars from uvby$\beta$ Photometry
• Spitzer 24 micron Survey of Debris Disks in the Pleiades
• Ages of late spectral type Vega-like stars
• Mid-Infrared Spectra of Dust Debris Around Main-Sequence Stars

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