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, Kevin Luhman, K. I. Uchida, J. D. Green, B. Sargent, J. Najita, G. C. Sloan, L. D. Keller, T. L. Herter

Research output: Contribution to journalArticle

18 Citations (Scopus)

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 languageEnglish (US)
JournalAstrophysical Journal
Volume621
Issue number2 II
DOIs
StatePublished - Mar 10 2005

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Indian spacecraft
hydrogen
dust
stars
silicate
accretion
wavelength
T Tauri stars
photosphere
accretion disks
spectrographs
silicates
young
wavelengths
x rays

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Furlan, E., Calvet, N., D'Alessio, P., Hartmann, L., Forrest, W. J., Watson, D. M., ... Herter, T. L. (2005). Spitzer IRS spectra of young stars near the hydrogen-burning mass limit. Astrophysical Journal, 621(2 II). https://doi.org/10.1086/429273
Furlan, E. ; Calvet, N. ; D'Alessio, P. ; Hartmann, L. ; Forrest, W. J. ; Watson, D. M. ; Luhman, Kevin ; Uchida, K. I. ; Green, J. D. ; Sargent, B. ; Najita, J. ; Sloan, G. C. ; Keller, L. D. ; Herter, T. L. / Spitzer IRS spectra of young stars near the hydrogen-burning mass limit. In: Astrophysical Journal. 2005 ; Vol. 621, No. 2 II.
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Furlan, E, Calvet, N, D'Alessio, P, Hartmann, L, Forrest, WJ, Watson, DM, Luhman, K, Uchida, KI, Green, JD, Sargent, B, Najita, J, Sloan, GC, Keller, LD & Herter, TL 2005, 'Spitzer IRS spectra of young stars near the hydrogen-burning mass limit', Astrophysical Journal, vol. 621, no. 2 II. https://doi.org/10.1086/429273

Spitzer IRS spectra of young stars near the hydrogen-burning mass limit. / Furlan, E.; Calvet, N.; D'Alessio, P.; Hartmann, L.; Forrest, W. J.; Watson, D. M.; Luhman, Kevin; Uchida, K. I.; Green, J. D.; Sargent, B.; Najita, J.; Sloan, G. C.; Keller, L. D.; Herter, T. L.

In: Astrophysical Journal, Vol. 621, No. 2 II, 10.03.2005.

Research output: Contribution to journalArticle

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AU - Furlan, E.

AU - Calvet, N.

AU - D'Alessio, P.

AU - Hartmann, L.

AU - Forrest, W. J.

AU - Watson, D. M.

AU - Luhman, Kevin

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.

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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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Furlan E, Calvet N, D'Alessio P, Hartmann L, Forrest WJ, Watson DM et al. Spitzer IRS spectra of young stars near the hydrogen-burning mass limit. Astrophysical Journal. 2005 Mar 10;621(2 II). https://doi.org/10.1086/429273