The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building
— Northern Arizona University Skip to main navigation Skip to search Skip to main content Northern Arizona University Home Home Profiles Departments and Centers Scholarly Works Activities Grants Datasets Prizes Search by expertise, name or affiliation The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building Lucas Cieza, Deborah L. Padgett, Karl R. Stapelfeldt, Jean Charles Augereau, Paul Harvey, Neal J. Evans, Bruno Merín, David Koerner, Anneila Sargent, Ewine F. Van Dishoeck, Lori Allen, Geoffrey Blake, Timothy Brooke, Nicholas Chapman, Tracy Huard, Shih Ping Lai, Lee Mundy, Philip C. Myers, William Spiesman, Zahed Wahhaj Astronomy and Planetary Sciences Research output: Contribution to journal › Article › peer-review 148 Scopus citations Overview Fingerprint Abstract One of the central goals of the Spitzer Legacy Project "From Cores to Disks" (c2d) is to determine the frequency of circumstellar disks around weak-line T Tauri stars (WTTSs) and to study the properties and evolutionary status of these disks. Here we present a census of disks for a sample of over 230 WTTSs located in the c2d IRAC and MIPS maps of the Ophiuchus, Lupus, and Perseus Molecular Clouds. We find that ∼20% of the WTTSs in a magnitude-limited subsample have IR excesses at IRAC wavelengths. These disks frequencies are ∼3-6 times larger than that recently found for a sample of relatively isolated WTTSs located outside the highest extinction regions covered by the c2d maps. The disk fractions we find are more consistent with those obtained in recent Spitzer studies of WTTSs in young clusters such as IC 348 and Tr 37. According to their location in the H-R diagram, the WTTSs with excesses in our sample are among the younger part of the age distribution. Still, up to ∼50% of the apparently youngest stars in the sample show no evidence of IR excess, suggesting that the circumstellar disks of a sizable fraction of pre-main-sequence stars dissipate in a timescale of ∼1 Myr. We also find that none of the stars in our sample apparently older than ∼10 Myr have detectable circumstellar disks at wavelengths <24 μm. The WTTS disks in our sample exhibit a wide range of properties (SED morphology, inner radius, Ldisk/L*, etc.) that bridge the gaps observed between the CTTSs and the debris disk regimes. Original language English (US) Pages (from-to) 308-328 Number of pages 21 Journal Astrophysical Journal Volume 667 Issue number 1 I DOIs https://doi.org/10.1086/520698 State Published - 2007 Keywords Infrared: stars Open clusters and associations: individual (IC 348) Planetary systems: protoplanetary disks Stars: pre-main-sequence ASJC Scopus subject areas Astronomy and Astrophysics Space and Planetary Science Access to Document 10.1086/520698 Other files and links Link to publication in Scopus Fingerprint Dive into the research topics of 'The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building'. Together they form a unique fingerprint. planets Physics & Astronomy 100% T Tauri stars Physics & Astronomy 98% planet Earth & Environmental Sciences 96% timescale Earth & Environmental Sciences 77% young Earth & Environmental Sciences 74% stars Physics & Astronomy 73% wavelength Earth & Environmental Sciences 54% age structure Earth & Environmental Sciences 37% View full fingerprint Cite this APA Standard Harvard Vancouver Author BIBTEX RIS Cieza, L., Padgett, D. L., Stapelfeldt, K. R., Augereau, J. C., Harvey, P., Evans, N. J., Merín, B., Koerner, D., Sargent, A., Van Dishoeck, E. F., Allen, L., Blake, G., Brooke, T., Chapman, N., Huard, T., Lai, S. P., Mundy, L., Myers, P. C., Spiesman, W., & Wahhaj, Z. (2007). The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building. Astrophysical Journal, 667(1 I), 308-328. https://doi.org/10.1086/520698 The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building. / Cieza, Lucas; Padgett, Deborah L.; Stapelfeldt, Karl R.; Augereau, Jean Charles; Harvey, Paul; Evans, Neal J.; Merín, Bruno; Koerner, David; Sargent, Anneila; Van Dishoeck, Ewine F.; Allen, Lori; Blake, Geoffrey; Brooke, Timothy; Chapman, Nicholas; Huard, Tracy; Lai, Shih Ping; Mundy, Lee; Myers, Philip C.; Spiesman, William; Wahhaj, Zahed. In: Astrophysical Journal, Vol. 667, No. 1 I, 2007, p. 308-328. Research output: Contribution to journal › Article › peer-review Cieza, L, Padgett, DL, Stapelfeldt, KR, Augereau, JC, Harvey, P, Evans, NJ, Merín, B, Koerner, D, Sargent, A, Van Dishoeck, EF, Allen, L, Blake, G, Brooke, T, Chapman, N, Huard, T, Lai, SP, Mundy, L, Myers, PC, Spiesman, W & Wahhaj, Z 2007, 'The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building', Astrophysical Journal, vol. 667, no. 1 I, pp. 308-328. https://doi.org/10.1086/520698 Cieza L, Padgett DL, Stapelfeldt KR, Augereau JC, Harvey P, Evans NJ et al. The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building. Astrophysical Journal. 2007;667(1 I):308-328. https://doi.org/10.1086/520698 Cieza, Lucas ; Padgett, Deborah L. ; Stapelfeldt, Karl R. ; Augereau, Jean Charles ; Harvey, Paul ; Evans, Neal J. ; Merín, Bruno ; Koerner, David ; Sargent, Anneila ; Van Dishoeck, Ewine F. ; Allen, Lori ; Blake, Geoffrey ; Brooke, Timothy ; Chapman, Nicholas ; Huard, Tracy ; Lai, Shih Ping ; Mundy, Lee ; Myers, Philip C. ; Spiesman, William ; Wahhaj, Zahed. / The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building. In: Astrophysical Journal. 2007 ; Vol. 667, No. 1 I. pp. 308-328. @article{8bac36fe5d85416f84e6c1eadaec19ca, title = "The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building", abstract = "One of the central goals of the Spitzer Legacy Project {"}From Cores to Disks{"} (c2d) is to determine the frequency of circumstellar disks around weak-line T Tauri stars (WTTSs) and to study the properties and evolutionary status of these disks. Here we present a census of disks for a sample of over 230 WTTSs located in the c2d IRAC and MIPS maps of the Ophiuchus, Lupus, and Perseus Molecular Clouds. We find that ∼20% of the WTTSs in a magnitude-limited subsample have IR excesses at IRAC wavelengths. These disks frequencies are ∼3-6 times larger than that recently found for a sample of relatively isolated WTTSs located outside the highest extinction regions covered by the c2d maps. The disk fractions we find are more consistent with those obtained in recent Spitzer studies of WTTSs in young clusters such as IC 348 and Tr 37. According to their location in the H-R diagram, the WTTSs with excesses in our sample are among the younger part of the age distribution. Still, up to ∼50% of the apparently youngest stars in the sample show no evidence of IR excess, suggesting that the circumstellar disks of a sizable fraction of pre-main-sequence stars dissipate in a timescale of ∼1 Myr. We also find that none of the stars in our sample apparently older than ∼10 Myr have detectable circumstellar disks at wavelengths <24 μm. The WTTS disks in our sample exhibit a wide range of properties (SED morphology, inner radius, Ldisk/L*, etc.) that bridge the gaps observed between the CTTSs and the debris disk regimes.", keywords = "Infrared: stars, Open clusters and associations: individual (IC 348), Planetary systems: protoplanetary disks, Stars: pre-main-sequence", author = "Lucas Cieza and Padgett, {Deborah L.} and Stapelfeldt, {Karl R.} and Augereau, {Jean Charles} and Paul Harvey and Evans, {Neal J.} and Bruno Mer{\'i}n and David Koerner and Anneila Sargent and {Van Dishoeck}, {Ewine F.} and Lori Allen and Geoffrey Blake and Timothy Brooke and Nicholas Chapman and Tracy Huard and Lai, {Shih Ping} and Lee Mundy and Myers, {Philip C.} and William Spiesman and Zahed Wahhaj", year = "2007", doi = "10.1086/520698", language = "English (US)", volume = "667", pages = "308--328", journal = "Astrophysical Journal", issn = "0004-637X", publisher = "IOP Publishing Ltd.", number = "1 I", } TY - JOUR T1 - The spitzer c2d survey of weak-line t tauri stars. II. New constraints on the timescale for planet building AU - Cieza, Lucas AU - Padgett, Deborah L. AU - Stapelfeldt, Karl R. AU - Augereau, Jean Charles AU - Harvey, Paul AU - Evans, Neal J. AU - Merín, Bruno AU - Koerner, David AU - Sargent, Anneila AU - Van Dishoeck, Ewine F. AU - Allen, Lori AU - Blake, Geoffrey AU - Brooke, Timothy AU - Chapman, Nicholas AU - Huard, Tracy AU - Lai, Shih Ping AU - Mundy, Lee AU - Myers, Philip C. AU - Spiesman, William AU - Wahhaj, Zahed PY - 2007 Y1 - 2007 N2 - One of the central goals of the Spitzer Legacy Project "From Cores to Disks" (c2d) is to determine the frequency of circumstellar disks around weak-line T Tauri stars (WTTSs) and to study the properties and evolutionary status of these disks. Here we present a census of disks for a sample of over 230 WTTSs located in the c2d IRAC and MIPS maps of the Ophiuchus, Lupus, and Perseus Molecular Clouds. We find that ∼20% of the WTTSs in a magnitude-limited subsample have IR excesses at IRAC wavelengths. These disks frequencies are ∼3-6 times larger than that recently found for a sample of relatively isolated WTTSs located outside the highest extinction regions covered by the c2d maps. The disk fractions we find are more consistent with those obtained in recent Spitzer studies of WTTSs in young clusters such as IC 348 and Tr 37. According to their location in the H-R diagram, the WTTSs with excesses in our sample are among the younger part of the age distribution. Still, up to ∼50% of the apparently youngest stars in the sample show no evidence of IR excess, suggesting that the circumstellar disks of a sizable fraction of pre-main-sequence stars dissipate in a timescale of ∼1 Myr. We also find that none of the stars in our sample apparently older than ∼10 Myr have detectable circumstellar disks at wavelengths <24 μm. The WTTS disks in our sample exhibit a wide range of properties (SED morphology, inner radius, Ldisk/L*, etc.) that bridge the gaps observed between the CTTSs and the debris disk regimes. AB - One of the central goals of the Spitzer Legacy Project "From Cores to Disks" (c2d) is to determine the frequency of circumstellar disks around weak-line T Tauri stars (WTTSs) and to study the properties and evolutionary status of these disks. Here we present a census of disks for a sample of over 230 WTTSs located in the c2d IRAC and MIPS maps of the Ophiuchus, Lupus, and Perseus Molecular Clouds. We find that ∼20% of the WTTSs in a magnitude-limited subsample have IR excesses at IRAC wavelengths. These disks frequencies are ∼3-6 times larger than that recently found for a sample of relatively isolated WTTSs located outside the highest extinction regions covered by the c2d maps. The disk fractions we find are more consistent with those obtained in recent Spitzer studies of WTTSs in young clusters such as IC 348 and Tr 37. According to their location in the H-R diagram, the WTTSs with excesses in our sample are among the younger part of the age distribution. Still, up to ∼50% of the apparently youngest stars in the sample show no evidence of IR excess, suggesting that the circumstellar disks of a sizable fraction of pre-main-sequence stars dissipate in a timescale of ∼1 Myr. We also find that none of the stars in our sample apparently older than ∼10 Myr have detectable circumstellar disks at wavelengths <24 μm. The WTTS disks in our sample exhibit a wide range of properties (SED morphology, inner radius, Ldisk/L*, etc.) that bridge the gaps observed between the CTTSs and the debris disk regimes. KW - Infrared: stars KW - Open clusters and associations: individual (IC 348) KW - Planetary systems: protoplanetary disks KW - Stars: pre-main-sequence UR - http://www.scopus.com/inward/record.url?scp=35348907219&partnerID=8YFLogxK UR - http://www.scopus.com/inward/citedby.url?scp=35348907219&partnerID=8YFLogxK U2 - 10.1086/520698 DO - 10.1086/520698 M3 - Article AN - SCOPUS:35348907219 VL - 667 SP - 308 EP - 328 JO - Astrophysical Journal JF - Astrophysical Journal SN - 0004-637X IS - 1 I 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. By continuing you agree to the use of cookies Log in to Pure About web accessibility Contact us
