Spitzer 24 μm survey of debris disks in the pleiades

Nadya Gorlova, George H. Rieke, James Muzerolle, John R. Stauffer, Nick Siegler, Erick T. Young, John H. Stansberry

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

We performed a 24 μm 2° × 1° survey of the Pleiades cluster, using the MIPS instrument on Spitzer. Fifty-four members ranging in spectral type from B8 to K6 show 24 μm fluxes consistent with bare photospheres. All Be stars show excesses attributed to free-free emission in their gaseous envelopes. Five early-type stars and four solar-type stars show excesses indicative of debris disks. We find a debris disk fraction of 25% for B-A members and 10% for F-K3 ones. These fractions appear intermediate between those for younger clusters and for the older field stars. They indicate a decay with age of the frequency of the dust production events inside the planetary zone, with similar timescales for solar-mass stars as have been found previously for A stars.

Original languageEnglish (US)
Pages (from-to)1028-1042
Number of pages15
JournalAstrophysical Journal
Volume649
Issue number2 I
DOIs
StatePublished - Oct 1 2006

Keywords

  • Circumstellar matter
  • Infrared: stars
  • Open clusters and associations: individual (Pleiades)
  • Planetary systems: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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