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Debris Disks of Members of the Blanco 1 Open Cluster

Stauffer, John R. and Rebull, Luisa M. and James, David and Noriega-Crespo, Alberto and Strom, Steven and Wolk, Scott and Carpenter, John M. and Barrado y Navascues, David and Micela, Giusi and Backman, Dana and Cargile, P. A. (2010) Debris Disks of Members of the Blanco 1 Open Cluster. Astrophysical Journal, 719 (2). pp. 1859-1871. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20100908-105118737

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Abstract

We have used the Spitzer Space Telescope to obtain Multiband Imaging Photometer for Spitzer (MIPS) 24 μm photometry for 37 members of the ~100 Myr old open cluster Blanco 1. For the brightest 25 of these stars (where we have 3σ uncertainties less than 15%), we find significant mid-IR excesses for eight 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 μm excess and any other stellar property for our Blanco 1 sample of stars is with binarity. Blanco 1 members that are photometric binaries show few or no detected 24 μm excesses whereas a quarter of the apparently single Blanco 1 members do have excesses. We have examined the MIPS data for two other clusters of similar age to Blanco 1—NGC 2547 and the Pleiades. The AFGK photometric binary star members of both of these clusters also show a much lower frequency of 24 μm excesses compared to stars that lie near the single-star main sequence. We provide a new determination of the relation between the V – K_ s color and K_ s – [24] color for main sequence photospheres based on Hyades members observed with MIPS. As a result of our analysis of the Hyades data, we identify three low mass Hyades members as candidates for having debris disks near the MIPS detection limit.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-637X/719/2/1859 DOIArticle
http://iopscience.iop.org/0004-637X/719/2/1859PublisherArticle
ORCID:
AuthorORCID
Stauffer, John R.0000-0003-3595-7382
Rebull, Luisa M.0000-0001-6381-515X
Noriega-Crespo, Alberto0000-0002-6296-8960
Wolk, Scott0000-0002-0826-9261
Carpenter, John M.0000-0003-2251-0602
Micela, Giusi0000-0002-9900-4751
Additional Information:© 2010 The American Astronomical Society. Received 2009 July 8; accepted 2010 June 28; published 2010 August 4. This work is based (in part) on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. Most of the support for this work was provided by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. This research has made use of NASA’s Star and Exoplanet Database (NStED) and the Astrophysics Data System (ADS) Abstract Service, and of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of data products from the 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. These data were served by the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The research described in this paper was partially carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASA1407
NSFUNSPECIFIED
Subject Keywords:open clusters and associations: individual (Blanco 1); stars: low-mass
Issue or Number:2
Classification Code:PACS: 98.20.Di; 97.21.+a; 97.10.Fy; 97.10.Ri; 97.10.Kc; 97.10.Me
Record Number:CaltechAUTHORS:20100908-105118737
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20100908-105118737
Official Citation:John R. Stauffer et al 2010 ApJ 719 1859 doi: 10.1088/0004-637X/719/2/1859
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19828
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 Sep 2010 04:02
Last Modified:14 Nov 2019 00:12

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