SWS observations of young main-sequence stars with dusty circumstellar disks.

C. Waelkens; L. B. F. M. Waters; M. S. de Graauw; E. Huygen; K. Malfait; H. Plets; B. Vandenbussche; D. A. Beintema; D. R. Boxhoorn; H. J. Habing; A. M. Heras; D. J. M. Kester; F. Lahuis; P. W. Morris; P. R. Roelfsema; A. Salama; R. Siebenmorgen; N. R. Trams; N. R. van der Bliek; E. A. Valentijn; P. R. Wesselius

SWS observations of young main-sequence stars with dusty circumstellar disks.

C. Waelkens, L. B. F. M. Waters, M. S. de Graauw, E. Huygen, K. Malfait, H. Plets, B. Vandenbussche, D. A. Beintema, D. R. Boxhoorn, H. J. Habing, A. M. Heras, D. J. M. Kester, F. Lahuis, P. W. Morris, P. R. Roelfsema, A. Salama, R. Siebenmorgen, N. R. Trams, N. R. van der Bliek, E. A. ValentijnP. R. Wesselius

Astronomy

Research output: Contribution to journal › Article › Academic › peer-review

193 Citations (Scopus)

Abstract

We present SWS full-scan observations of three objects that are thought to be in a stage of evolution between the youngest, embedded, Herbig Ae/Be stars and Beta Pictoris, a young main-sequence star with a circumstellar disk. The 8-12μm spectra of all three stars cannot be understood in terms of purely amorphous silicates, but require the presence of crystalline silicates in different amounts. Around two objects both oxygen-rich and carbon-rich dust particles are present: the spectrum of HD 100546 displays the full set of UIR features; in the spectrum of HD 142527 both the 3.29 and 3.42μm emission features are observed, as well as a strong 3.51μm feature. The spectrum of HD 100546 is extremely rich in silicate features in the spectral range from 20 to 45μm; some of these features strongly suggest the presence of appreciable amounts of crystalline silicates.

Original language	English
Pages (from-to)	L245-L248
Journal	Astronomy and astrophysics
Volume	315
Publication status	Published - 1-Nov-1996

Keywords

CIRCUMSTELLAR MATTER
STARS: INDIVIDUAL: HD 100546
STARS: INDIVIDUAL: HD 142527
STARS: INDIVIDUAL: 51 OPH
ISM: ABUNDANCES
INFRARED: ISM: LINES AND BANDS

Access to Document

http://adsabs.harvard.edu/abs/1996A%26A...315L.245W

Cite this

Waelkens, C., Waters, L. B. F. M., de Graauw, M. S., Huygen, E., Malfait, K., Plets, H., Vandenbussche, B., Beintema, D. A., Boxhoorn, D. R., Habing, H. J., Heras, A. M., Kester, D. J. M., Lahuis, F., Morris, P. W., Roelfsema, P. R., Salama, A., Siebenmorgen, R., Trams, N. R., van der Bliek, N. R., ... Wesselius, P. R. (1996). SWS observations of young main-sequence stars with dusty circumstellar disks. Astronomy and astrophysics, 315, L245-L248. http://adsabs.harvard.edu/abs/1996A%26A...315L.245W

Waelkens, C. ; Waters, L. B. F. M. ; de Graauw, M. S. ; Huygen, E. ; Malfait, K. ; Plets, H. ; Vandenbussche, B. ; Beintema, D. A. ; Boxhoorn, D. R. ; Habing, H. J. ; Heras, A. M. ; Kester, D. J. M. ; Lahuis, F. ; Morris, P. W. ; Roelfsema, P. R. ; Salama, A. ; Siebenmorgen, R. ; Trams, N. R. ; van der Bliek, N. R. ; Valentijn, E. A. ; Wesselius, P. R. / SWS observations of young main-sequence stars with dusty circumstellar disks. In: Astronomy and astrophysics. 1996 ; Vol. 315. pp. L245-L248.

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title = "SWS observations of young main-sequence stars with dusty circumstellar disks.",

abstract = "We present SWS full-scan observations of three objects that are thought to be in a stage of evolution between the youngest, embedded, Herbig Ae/Be stars and Beta Pictoris, a young main-sequence star with a circumstellar disk. The 8-12μm spectra of all three stars cannot be understood in terms of purely amorphous silicates, but require the presence of crystalline silicates in different amounts. Around two objects both oxygen-rich and carbon-rich dust particles are present: the spectrum of HD 100546 displays the full set of UIR features; in the spectrum of HD 142527 both the 3.29 and 3.42μm emission features are observed, as well as a strong 3.51μm feature. The spectrum of HD 100546 is extremely rich in silicate features in the spectral range from 20 to 45μm; some of these features strongly suggest the presence of appreciable amounts of crystalline silicates.",

keywords = "CIRCUMSTELLAR MATTER, STARS: INDIVIDUAL: HD 100546, STARS: INDIVIDUAL: HD 142527, STARS: INDIVIDUAL: 51 OPH, ISM: ABUNDANCES, INFRARED: ISM: LINES AND BANDS",

author = "C. Waelkens and Waters, {L. B. F. M.} and {de Graauw}, {M. S.} and E. Huygen and K. Malfait and H. Plets and B. Vandenbussche and Beintema, {D. A.} and Boxhoorn, {D. R.} and Habing, {H. J.} and Heras, {A. M.} and Kester, {D. J. M.} and F. Lahuis and Morris, {P. W.} and Roelfsema, {P. R.} and A. Salama and R. Siebenmorgen and Trams, {N. R.} and {van der Bliek}, {N. R.} and Valentijn, {E. A.} and Wesselius, {P. R.}",

year = "1996",

month = nov,

day = "1",

language = "English",

volume = "315",

pages = "L245--L248",

journal = "Astronomy & astrophysics",

issn = "0004-6361",

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Waelkens, C, Waters, LBFM, de Graauw, MS, Huygen, E, Malfait, K, Plets, H, Vandenbussche, B, Beintema, DA, Boxhoorn, DR, Habing, HJ, Heras, AM, Kester, DJM, Lahuis, F, Morris, PW, Roelfsema, PR, Salama, A, Siebenmorgen, R, Trams, NR, van der Bliek, NR, Valentijn, EA & Wesselius, PR 1996, 'SWS observations of young main-sequence stars with dusty circumstellar disks.', Astronomy and astrophysics, vol. 315, pp. L245-L248. <http://adsabs.harvard.edu/abs/1996A%26A...315L.245W>

SWS observations of young main-sequence stars with dusty circumstellar disks. / Waelkens, C.; Waters, L. B. F. M.; de Graauw, M. S.; Huygen, E.; Malfait, K.; Plets, H.; Vandenbussche, B.; Beintema, D. A.; Boxhoorn, D. R.; Habing, H. J.; Heras, A. M.; Kester, D. J. M.; Lahuis, F.; Morris, P. W.; Roelfsema, P. R.; Salama, A.; Siebenmorgen, R.; Trams, N. R.; van der Bliek, N. R.; Valentijn, E. A.; Wesselius, P. R.

In: Astronomy and astrophysics, Vol. 315, 01.11.1996, p. L245-L248.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - SWS observations of young main-sequence stars with dusty circumstellar disks.

AU - Waelkens, C.

AU - Waters, L. B. F. M.

AU - de Graauw, M. S.

AU - Huygen, E.

AU - Malfait, K.

AU - Plets, H.

AU - Vandenbussche, B.

AU - Beintema, D. A.

AU - Boxhoorn, D. R.

AU - Habing, H. J.

AU - Heras, A. M.

AU - Kester, D. J. M.

AU - Lahuis, F.

AU - Morris, P. W.

AU - Roelfsema, P. R.

AU - Salama, A.

AU - Siebenmorgen, R.

AU - Trams, N. R.

AU - van der Bliek, N. R.

AU - Valentijn, E. A.

AU - Wesselius, P. R.

PY - 1996/11/1

Y1 - 1996/11/1

N2 - We present SWS full-scan observations of three objects that are thought to be in a stage of evolution between the youngest, embedded, Herbig Ae/Be stars and Beta Pictoris, a young main-sequence star with a circumstellar disk. The 8-12μm spectra of all three stars cannot be understood in terms of purely amorphous silicates, but require the presence of crystalline silicates in different amounts. Around two objects both oxygen-rich and carbon-rich dust particles are present: the spectrum of HD 100546 displays the full set of UIR features; in the spectrum of HD 142527 both the 3.29 and 3.42μm emission features are observed, as well as a strong 3.51μm feature. The spectrum of HD 100546 is extremely rich in silicate features in the spectral range from 20 to 45μm; some of these features strongly suggest the presence of appreciable amounts of crystalline silicates.

AB - We present SWS full-scan observations of three objects that are thought to be in a stage of evolution between the youngest, embedded, Herbig Ae/Be stars and Beta Pictoris, a young main-sequence star with a circumstellar disk. The 8-12μm spectra of all three stars cannot be understood in terms of purely amorphous silicates, but require the presence of crystalline silicates in different amounts. Around two objects both oxygen-rich and carbon-rich dust particles are present: the spectrum of HD 100546 displays the full set of UIR features; in the spectrum of HD 142527 both the 3.29 and 3.42μm emission features are observed, as well as a strong 3.51μm feature. The spectrum of HD 100546 is extremely rich in silicate features in the spectral range from 20 to 45μm; some of these features strongly suggest the presence of appreciable amounts of crystalline silicates.

KW - CIRCUMSTELLAR MATTER

KW - STARS: INDIVIDUAL: HD 100546

KW - STARS: INDIVIDUAL: HD 142527

KW - STARS: INDIVIDUAL: 51 OPH

KW - ISM: ABUNDANCES

KW - INFRARED: ISM: LINES AND BANDS

M3 - Article

VL - 315

SP - L245-L248

JO - Astronomy & astrophysics

JF - Astronomy & astrophysics

SN - 0004-6361

ER -