The environment of the optically brightest Herbig Ae star, HD 104237

C. A. Grady, B. Woodgate, Carlos A O Torres, Th Henning, Daniel Apai, J. Rodmann, Hongchi Wang, B. Stecklum, H. Linz, G. M. Williger, A. Brown, E. Wilkinson, G. M. Harper, G. J. Herczeg, A. Danks, G. L. Vieira, E. Malumuth, N. R. Collins, R. S. Hill

Research output: Contribution to journalArticle

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Abstract

We investigate the environment of the nearest Herbig Ae star, HD 104237, with a multiwavelength combination of optical coronagraphic, near-IR, and mid-IR imaging supported by optical, UV, and far-ultraviolet spectroscopy. We confirm the presence of T Tauri stars associated with the Herbig Ae star HD 104237, noted by Feigelson et al. We find that two of the stars within 15″ of HD 104237 have IR excesses, potentially indicating the presence of circumstellar disks, in addition to the Herbig Ae star itself. We derive a new spectral type of A7.5Ve-A8Ve for HD 104237 and find log (L/L⊙) = 1.39. With these data, HD 104237 has an age of t ≈ 5 Myr, in agreement with the estimates for the other members of the association. HD 104237 is still actively accreting, with a conspicuous UV/far-UV excess seen down to 1040 Å, and is driving a bipolar microjet termed HH 669. This makes it the second, older Herbig Ae star now known to have a microjet. The presence of the microjet enables us to constrain the circumstellar disk to r ≤ 0″.6 (70 AU) with an inclination angle of z = 18°-11+14 from pole-on. The absence of a spatially extended continuum and fluorescent H2 emission near Lyα is in agreement with the prediction of shadowed disk models for the IR spectral energy distribution. With the high spatial density of disks in this group of stars, proximity, and minimal reddening, HD 104237 and its companions should serve as ideal laboratories for probing the comparative evolution of planetary systems.

Original languageEnglish (US)
Pages (from-to)809-830
Number of pages22
JournalAstrophysical Journal
Volume608
Issue number2 I
DOIs
StatePublished - Jun 20 2004
Externally publishedYes

Fingerprint

spectroscopy
stars
prediction
energy
T Tauri stars
planetary systems
ultraviolet spectroscopy
spectral energy distribution
inclination
laboratory
distribution
proximity
poles
continuums
fluorescence
estimates
predictions

Keywords

  • Circumstellar matter
  • ISM: Herbig-Haro objects
  • ISM: individual (HH 669)
  • ISM: jets and outflows
  • Planetary systems: protoplanetary disks
  • Stars: individual (HD 104237)
  • Stars: pre-main-sequence

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Grady, C. A., Woodgate, B., Torres, C. A. O., Henning, T., Apai, D., Rodmann, J., ... Hill, R. S. (2004). The environment of the optically brightest Herbig Ae star, HD 104237. Astrophysical Journal, 608(2 I), 809-830. https://doi.org/10.1086/420763

The environment of the optically brightest Herbig Ae star, HD 104237. / Grady, C. A.; Woodgate, B.; Torres, Carlos A O; Henning, Th; Apai, Daniel; Rodmann, J.; Wang, Hongchi; Stecklum, B.; Linz, H.; Williger, G. M.; Brown, A.; Wilkinson, E.; Harper, G. M.; Herczeg, G. J.; Danks, A.; Vieira, G. L.; Malumuth, E.; Collins, N. R.; Hill, R. S.

In: Astrophysical Journal, Vol. 608, No. 2 I, 20.06.2004, p. 809-830.

Research output: Contribution to journalArticle

Grady, CA, Woodgate, B, Torres, CAO, Henning, T, Apai, D, Rodmann, J, Wang, H, Stecklum, B, Linz, H, Williger, GM, Brown, A, Wilkinson, E, Harper, GM, Herczeg, GJ, Danks, A, Vieira, GL, Malumuth, E, Collins, NR & Hill, RS 2004, 'The environment of the optically brightest Herbig Ae star, HD 104237', Astrophysical Journal, vol. 608, no. 2 I, pp. 809-830. https://doi.org/10.1086/420763
Grady CA, Woodgate B, Torres CAO, Henning T, Apai D, Rodmann J et al. The environment of the optically brightest Herbig Ae star, HD 104237. Astrophysical Journal. 2004 Jun 20;608(2 I):809-830. https://doi.org/10.1086/420763
Grady, C. A. ; Woodgate, B. ; Torres, Carlos A O ; Henning, Th ; Apai, Daniel ; Rodmann, J. ; Wang, Hongchi ; Stecklum, B. ; Linz, H. ; Williger, G. M. ; Brown, A. ; Wilkinson, E. ; Harper, G. M. ; Herczeg, G. J. ; Danks, A. ; Vieira, G. L. ; Malumuth, E. ; Collins, N. R. ; Hill, R. S. / The environment of the optically brightest Herbig Ae star, HD 104237. In: Astrophysical Journal. 2004 ; Vol. 608, No. 2 I. pp. 809-830.
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