A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus
— University of Arizona Skip to main navigation Skip to search Skip to main content University of Arizona Home Home Profiles Departments and Centers Scholarly Works Activities Grants Datasets Prizes Search by expertise, name or affiliation A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus Christine H. Chen, Mark Pecaut, Eric E. Mamajek, Kate Y.L. Su, Martin Bitner Steward Observatory Research output: Contribution to journal › Article › peer-review 53 Scopus citations Overview Fingerprint Abstract We have obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24μm and 70μm observations of 215 nearby, Hipparcos B- and A-type common proper-motion single and binary systems in the nearest OB association, Scorpius-Centaurus. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24μm B+A-type disk fractions of 17/67 (25+6 - 5%), 36/131 (27+4 - 4%), and 23/95 (24+5 - 4%) for Upper Scorpius (11Myr), Upper Centaurus Lupus (15Myr), and Lower Centaurus Crux (17Myr), respectively, somewhat smaller disk fractions than previously obtained for F- and G-type members. We confirm previous IRAS excess detections and present new discoveries of 51 protoplanetary and debris disk systems, with fractional infrared luminosities ranging from L IR/L * = 10-6 to 10-2 and grain temperatures ranging from T gr= 40 to 300K. In addition, we confirm that the 24μm and 70μm excesses (or fractional infrared luminosities) around B+A-type stars are smaller than those measured toward F+G-type stars and hypothesize that the observed disk property dependence on stellar mass may be the result of a higher stellar companion fraction around B- and A-type stars at 10-200 AU. Finally, we note that the majority of the ScoCen 24μm excess sources also possess 12μm excess, indicating that Earth-like planets may be forming via collisions in the terrestrial planet zone at 10-100Myr. Original language English (US) Article number 133 Journal Astrophysical Journal Volume 756 Issue number 2 DOIs https://doi.org/10.1088/0004-637X/756/2/133 State Published - Sep 10 2012 Keywords circumstellar matter infrared: planetary systems infrared: stars open clusters and associations: individual (Upper Scorpius, Lower Centaurus Crux, Upper Centaurus-) planetary systems planets and satellites: formation ASJC Scopus subject areas Astronomy and Astrophysics Space and Planetary Science Access to Document 10.1088/0004-637X/756/2/133 Other files and links Link to publication in Scopus Fingerprint Dive into the research topics of 'A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus'. Together they form a unique fingerprint. M stars Physics & Astronomy 100% luminosity Earth & Environmental Sciences 92% photometer Earth & Environmental Sciences 89% planet Earth & Environmental Sciences 67% photometers Physics & Astronomy 67% stars Physics & Astronomy 51% collision Earth & Environmental Sciences 32% terrestrial planets Physics & Astronomy 25% View full fingerprint Cite this APA Standard Harvard Vancouver Author BIBTEX RIS Chen, C. H., Pecaut, M., Mamajek, E. E., Su, K. Y. L., & Bitner, M. (2012). A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus. Astrophysical Journal, 756(2), [133]. https://doi.org/10.1088/0004-637X/756/2/133 A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus. / Chen, Christine H.; Pecaut, Mark; Mamajek, Eric E.; Su, Kate Y.L.; Bitner, Martin. In: Astrophysical Journal, Vol. 756, No. 2, 133, 10.09.2012. Research output: Contribution to journal › Article › peer-review Chen, CH, Pecaut, M, Mamajek, EE, Su, KYL & Bitner, M 2012, 'A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus', Astrophysical Journal, vol. 756, no. 2, 133. https://doi.org/10.1088/0004-637X/756/2/133 Chen CH, Pecaut M, Mamajek EE, Su KYL, Bitner M. A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus. Astrophysical Journal. 2012 Sep 10;756(2). 133. https://doi.org/10.1088/0004-637X/756/2/133 Chen, Christine H. ; Pecaut, Mark ; Mamajek, Eric E. ; Su, Kate Y.L. ; Bitner, Martin. / A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus. In: Astrophysical Journal. 2012 ; Vol. 756, No. 2. @article{2504b73c99014afdbd96a3023167d07a, title = "A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus", abstract = "We have obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24μm and 70μm observations of 215 nearby, Hipparcos B- and A-type common proper-motion single and binary systems in the nearest OB association, Scorpius-Centaurus. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24μm B+A-type disk fractions of 17/67 (25+6 - 5%), 36/131 (27+4 - 4%), and 23/95 (24+5 - 4%) for Upper Scorpius (11Myr), Upper Centaurus Lupus (15Myr), and Lower Centaurus Crux (17Myr), respectively, somewhat smaller disk fractions than previously obtained for F- and G-type members. We confirm previous IRAS excess detections and present new discoveries of 51 protoplanetary and debris disk systems, with fractional infrared luminosities ranging from L IR/L * = 10-6 to 10-2 and grain temperatures ranging from T gr= 40 to 300K. In addition, we confirm that the 24μm and 70μm excesses (or fractional infrared luminosities) around B+A-type stars are smaller than those measured toward F+G-type stars and hypothesize that the observed disk property dependence on stellar mass may be the result of a higher stellar companion fraction around B- and A-type stars at 10-200 AU. Finally, we note that the majority of the ScoCen 24μm excess sources also possess 12μm excess, indicating that Earth-like planets may be forming via collisions in the terrestrial planet zone at 10-100Myr.", keywords = "circumstellar matter, infrared: planetary systems, infrared: stars, open clusters and associations: individual (Upper Scorpius, Lower Centaurus Crux, Upper Centaurus-), planetary systems, planets and satellites: formation", author = "Chen, {Christine H.} and Mark Pecaut and Mamajek, {Eric E.} and Su, {Kate Y.L.} and Martin Bitner", year = "2012", month = sep, day = "10", doi = "10.1088/0004-637X/756/2/133", language = "English (US)", volume = "756", journal = "Astrophysical Journal", issn = "0004-637X", publisher = "IOP Publishing Ltd.", number = "2", } TY - JOUR T1 - A Spitzer MIPS study of 2.5-2.0 M ⊙ stars in Scorpius-Centaurus AU - Chen, Christine H. AU - Pecaut, Mark AU - Mamajek, Eric E. AU - Su, Kate Y.L. AU - Bitner, Martin PY - 2012/9/10 Y1 - 2012/9/10 N2 - We have obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24μm and 70μm observations of 215 nearby, Hipparcos B- and A-type common proper-motion single and binary systems in the nearest OB association, Scorpius-Centaurus. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24μm B+A-type disk fractions of 17/67 (25+6 - 5%), 36/131 (27+4 - 4%), and 23/95 (24+5 - 4%) for Upper Scorpius (11Myr), Upper Centaurus Lupus (15Myr), and Lower Centaurus Crux (17Myr), respectively, somewhat smaller disk fractions than previously obtained for F- and G-type members. We confirm previous IRAS excess detections and present new discoveries of 51 protoplanetary and debris disk systems, with fractional infrared luminosities ranging from L IR/L * = 10-6 to 10-2 and grain temperatures ranging from T gr= 40 to 300K. In addition, we confirm that the 24μm and 70μm excesses (or fractional infrared luminosities) around B+A-type stars are smaller than those measured toward F+G-type stars and hypothesize that the observed disk property dependence on stellar mass may be the result of a higher stellar companion fraction around B- and A-type stars at 10-200 AU. Finally, we note that the majority of the ScoCen 24μm excess sources also possess 12μm excess, indicating that Earth-like planets may be forming via collisions in the terrestrial planet zone at 10-100Myr. AB - We have obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24μm and 70μm observations of 215 nearby, Hipparcos B- and A-type common proper-motion single and binary systems in the nearest OB association, Scorpius-Centaurus. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24μm B+A-type disk fractions of 17/67 (25+6 - 5%), 36/131 (27+4 - 4%), and 23/95 (24+5 - 4%) for Upper Scorpius (11Myr), Upper Centaurus Lupus (15Myr), and Lower Centaurus Crux (17Myr), respectively, somewhat smaller disk fractions than previously obtained for F- and G-type members. We confirm previous IRAS excess detections and present new discoveries of 51 protoplanetary and debris disk systems, with fractional infrared luminosities ranging from L IR/L * = 10-6 to 10-2 and grain temperatures ranging from T gr= 40 to 300K. In addition, we confirm that the 24μm and 70μm excesses (or fractional infrared luminosities) around B+A-type stars are smaller than those measured toward F+G-type stars and hypothesize that the observed disk property dependence on stellar mass may be the result of a higher stellar companion fraction around B- and A-type stars at 10-200 AU. Finally, we note that the majority of the ScoCen 24μm excess sources also possess 12μm excess, indicating that Earth-like planets may be forming via collisions in the terrestrial planet zone at 10-100Myr. KW - circumstellar matter KW - infrared: planetary systems KW - infrared: stars KW - open clusters and associations: individual (Upper Scorpius, Lower Centaurus Crux, Upper Centaurus-) KW - planetary systems KW - planets and satellites: formation UR - http://www.scopus.com/inward/record.url?scp=84865585555&partnerID=8YFLogxK UR - http://www.scopus.com/inward/citedby.url?scp=84865585555&partnerID=8YFLogxK U2 - 10.1088/0004-637X/756/2/133 DO - 10.1088/0004-637X/756/2/133 M3 - Article AN - SCOPUS:84865585555 VL - 756 JO - Astrophysical Journal JF - Astrophysical Journal SN - 0004-637X IS - 2 M1 - 133 ER - Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2022 Elsevier B.V We use cookies to help provide and enhance our service and tailor content. 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