Spitzer IRS spectra of young stars near the hydrogen-burning mass limit

E. Furlan; N. Calvet; P. D'Alessio; L. Hartmann; W. J. Forrest; D. M. Watson; K. L. Luhman; K. I. Uchida; J. D. Green; B. Sargent; J. Najita; G. C. Sloan; L. D. Keller; T. L. Herter

doi:10.1086/429273

Spitzer IRS spectra of young stars near the hydrogen-burning mass limit

E. Furlan, N. Calvet, P. D'Alessio, L. Hartmann, W. J. Forrest, D. M. Watson, K. L. Luhman, K. I. Uchida, J. D. Green, B. Sargent, J. Najita, G. C. Sloan, L. D. Keller, T. L. Herter

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Abstract

We present Spitzer Infrared Spectrograph measurements for two young stars near the hydrogen-burning mass limit in the Taurus star-forming region. While one of the objects, V410 X-ray 3, displays no mid-infrared excess, the other one, V410 Anon 13, shows a clear excess at wavelengths longward of 10 μm, indicative of a circumstellar disk. Moreover, the disk surrounding V410 Anon 13 is reminiscent of flared accretion disks around classical T Tauri stars; small dust grains in the disk photosphere generate the broad 10 μm silicate emission feature, whose structure suggests the presence of crystalline components. This demonstrates that very low mass objects, like their more massive counterparts, experience dust processing in their disks.

Original language	English (US)
Pages (from-to)	L129-L132
Journal	Astrophysical Journal
Volume	621
Issue number	2 II
DOIs	https://doi.org/10.1086/429273
State	Published - Mar 10 2005

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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@article{83a19248c4f146c89650a6728495f929,

title = "Spitzer IRS spectra of young stars near the hydrogen-burning mass limit",

abstract = "We present Spitzer Infrared Spectrograph measurements for two young stars near the hydrogen-burning mass limit in the Taurus star-forming region. While one of the objects, V410 X-ray 3, displays no mid-infrared excess, the other one, V410 Anon 13, shows a clear excess at wavelengths longward of 10 μm, indicative of a circumstellar disk. Moreover, the disk surrounding V410 Anon 13 is reminiscent of flared accretion disks around classical T Tauri stars; small dust grains in the disk photosphere generate the broad 10 μm silicate emission feature, whose structure suggests the presence of crystalline components. This demonstrates that very low mass objects, like their more massive counterparts, experience dust processing in their disks.",

author = "E. Furlan and N. Calvet and P. D'Alessio and L. Hartmann and Forrest, {W. J.} and Watson, {D. M.} and Luhman, {K. L.} and Uchida, {K. I.} and Green, {J. D.} and B. Sargent and J. Najita and Sloan, {G. C.} and Keller, {L. D.} and Herter, {T. L.}",

note = "Funding Information: This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, Caltech, under NASA contract 1407. Support for this work was provided by NASA through contract number 1257184 issued by JPL/Caltech. K. L. was supported by grant NAG5-11627 from the NASA Long-Term Space Astrophysics program. This publication makes use of data products from the Two Micron All Sky Survey (2MASS), which is a joint project of the University of Massachusetts and IPAC/Caltech, funded by NASA and NSF.",

year = "2005",

month = mar,

day = "10",

doi = "10.1086/429273",

language = "English (US)",

volume = "621",

pages = "L129--L132",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 II",

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TY - JOUR

T1 - Spitzer IRS spectra of young stars near the hydrogen-burning mass limit

AU - Furlan, E.

AU - Calvet, N.

AU - D'Alessio, P.

AU - Hartmann, L.

AU - Forrest, W. J.

AU - Watson, D. M.

AU - Luhman, K. L.

AU - Uchida, K. I.

AU - Green, J. D.

AU - Sargent, B.

AU - Najita, J.

AU - Sloan, G. C.

AU - Keller, L. D.

AU - Herter, T. L.

N1 - Funding Information: This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, Caltech, under NASA contract 1407. Support for this work was provided by NASA through contract number 1257184 issued by JPL/Caltech. K. L. was supported by grant NAG5-11627 from the NASA Long-Term Space Astrophysics program. This publication makes use of data products from the Two Micron All Sky Survey (2MASS), which is a joint project of the University of Massachusetts and IPAC/Caltech, funded by NASA and NSF.

PY - 2005/3/10

Y1 - 2005/3/10

N2 - We present Spitzer Infrared Spectrograph measurements for two young stars near the hydrogen-burning mass limit in the Taurus star-forming region. While one of the objects, V410 X-ray 3, displays no mid-infrared excess, the other one, V410 Anon 13, shows a clear excess at wavelengths longward of 10 μm, indicative of a circumstellar disk. Moreover, the disk surrounding V410 Anon 13 is reminiscent of flared accretion disks around classical T Tauri stars; small dust grains in the disk photosphere generate the broad 10 μm silicate emission feature, whose structure suggests the presence of crystalline components. This demonstrates that very low mass objects, like their more massive counterparts, experience dust processing in their disks.

AB - We present Spitzer Infrared Spectrograph measurements for two young stars near the hydrogen-burning mass limit in the Taurus star-forming region. While one of the objects, V410 X-ray 3, displays no mid-infrared excess, the other one, V410 Anon 13, shows a clear excess at wavelengths longward of 10 μm, indicative of a circumstellar disk. Moreover, the disk surrounding V410 Anon 13 is reminiscent of flared accretion disks around classical T Tauri stars; small dust grains in the disk photosphere generate the broad 10 μm silicate emission feature, whose structure suggests the presence of crystalline components. This demonstrates that very low mass objects, like their more massive counterparts, experience dust processing in their disks.

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JO - Astrophysical Journal

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ER -

Spitzer IRS spectra of young stars near the hydrogen-burning mass limit

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