Hubble space telescope/NICMOS imaging of disks and envelopes around very young stars

Deborah L. Padgett, Wolfgang Brandner, Karl R. Stapelfeldt, Stephen E. Strom, Susan Terebey, David W Koerner

Research output: Contribution to journalArticle

198 Citations (Scopus)

Abstract

We present HST/NICMOS observations with ∼0″.1 ≈15 AU resolution of six young stellar objects in the Taurus star formation region. The targets of our survey are three Class I IRAS sources (IRAS 04016 + 2610, IRAS 04248 + 2612, and IRAS 04302 + 2247) and three low-luminosity stars (DG Tau B, Haro 6-5B, and CoKu Tau/1) associated with Herbig-Haro jets. The broadband images show that the near-infrared radiation from these sources is dominated by light scattered from dusty circumstellar material distributed in a region 10 15 times the size of our solar system. Although the detailed morphologies of the individual objects are unique, the observed young stellar objects share common features. All of the circumstellar reflection nebulae are crossed by dark lanes from 500 to 900 AU in extent and from less than 50 to 350 AU in apparent thickness. The absorption lanes extend perpendicular to known optical and millimeter outflows in these sources. We interpret the dark lanes as optically thick circumstellar disks seen in silhouette against bright reflection nebulosity. The bipolar reflection nebulae extending perpendicular to the dust lanes appear to be produced by scattering from the upper and lower surfaces of the disks and from dusty material within or on the walls of the outflow cavities. Of five objects in which the central source is directly detected, two are found to be subarcsecond binaries. This minisurvey is the highest resolution near-infrared study to date of circumstellar environments around solar-type stars with age ≤ 1 Myr.

Original languageEnglish (US)
Pages (from-to)1490-1504
Number of pages15
JournalAstronomical Journal
Volume117
Issue number3
StatePublished - Mar 1999
Externally publishedYes

Fingerprint

Infrared Astronomy Satellite
Hubble Space Telescope
near infrared
envelopes
outflow
reflection nebulae
stars
infrared radiation
solar system
cavity
scattering
near infrared radiation
dust
star formation
luminosity
broadband
cavities
material
young
high resolution

Keywords

  • Circumstellar matter
  • ISM: Jets and outflows
  • Stars: Pre-main-sequence

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Padgett, D. L., Brandner, W., Stapelfeldt, K. R., Strom, S. E., Terebey, S., & Koerner, D. W. (1999). Hubble space telescope/NICMOS imaging of disks and envelopes around very young stars. Astronomical Journal, 117(3), 1490-1504.

Hubble space telescope/NICMOS imaging of disks and envelopes around very young stars. / Padgett, Deborah L.; Brandner, Wolfgang; Stapelfeldt, Karl R.; Strom, Stephen E.; Terebey, Susan; Koerner, David W.

In: Astronomical Journal, Vol. 117, No. 3, 03.1999, p. 1490-1504.

Research output: Contribution to journalArticle

Padgett, DL, Brandner, W, Stapelfeldt, KR, Strom, SE, Terebey, S & Koerner, DW 1999, 'Hubble space telescope/NICMOS imaging of disks and envelopes around very young stars', Astronomical Journal, vol. 117, no. 3, pp. 1490-1504.
Padgett DL, Brandner W, Stapelfeldt KR, Strom SE, Terebey S, Koerner DW. Hubble space telescope/NICMOS imaging of disks and envelopes around very young stars. Astronomical Journal. 1999 Mar;117(3):1490-1504.
Padgett, Deborah L. ; Brandner, Wolfgang ; Stapelfeldt, Karl R. ; Strom, Stephen E. ; Terebey, Susan ; Koerner, David W. / Hubble space telescope/NICMOS imaging of disks and envelopes around very young stars. In: Astronomical Journal. 1999 ; Vol. 117, No. 3. pp. 1490-1504.
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