English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We have used the Spitzer Space Telescope to obtain Multiband ImagingPhotometer for Spitzer (MIPS) 24 um photometry for 37 members of the ~100 Myrold open cluster Blanco 1. For the brightest 25 of these stars (where we have3sigma uncertainties less than 15%), we find significant mid-IR excesses foreight stars, corresponding to a debris disk detection frequency of about 32%.The stars with excesses include two A stars, four F dwarfs and two G dwarfs.The most significant linkage between 24 um excess and any other stellarproperty for our Blanco 1 sample of stars is with binarity. Blanco 1 membersthat are photometric binaries show few or no detected 24 um excesses whereas aquarter of the apparently single Blanco 1 members do have excesses. We haveexamined the MIPS data for two other clusters of similar age to Blanco 1 -- NGC2547 and the Pleiades. The AFGK photometric binary star members of both ofthese clusters also show a much lower frequency of 24 um excesses compared tostars that lie near the single-star main sequence. We provide a newdetermination of the relation between V-Ks color and Ks-[24] color for mainsequence photospheres based on Hyades members observed with MIPS. As a resultof our analysis of the Hyades data, we identify three low mass Hyades membersas candidates for having debris disks near the MIPS detection limit.

Debris Disks of Members of the Blanco 1 Open Cluster