The IUE mega campaign: Wind variability and rotation in early-type stars

D. Massa, A. W. Fullerton, J. S. Nichols, S. P. Owocki, R. K. Prinja, N. St-Louis, A. J. Willis, B. Altner, C. T. Bolton, J. P. Cassinelli, D. Cohen, R. G. Cooper, A. Feldmeier, K. G. Gayley, T. Harries, S. R. Heap, R. N. Henriksen, I. D. Howarth, Ivan - Hubeny, E. KambeL. Kaper, G. Koenigsberger, S. Marchenko, S. R. Mccandliss, A. F J Moffat, T. Nugis, J. Puls, C. Robert, R. E. Schulte-Ladbeck, L. J. Smith, M. A. Smith, W. L. Waldron, R. L. White

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Wind variability in OB stars may be ubiquitous, and a connection between projected stellar rotation velocity and wind activity is well established. However, the origin of this connection is unknown. To probe the nature of the rotation connection, several of the attendees at the workshop on Instability and Variability of Hot-Star Winds drafted an IUE observing proposal. The goal of this program was to follow three stars for several rotations to determine whether the rotation connection is correlative or causal. The stars selected for monitoring all have rotation periods ≤5 days. They were HD 50896 (WN5), HD 64760 (B0.5 Ib), and HD 66811 [ζ Pup; O4 If(n)]. During 16 days of nearly continuous observations in 1995 January (dubbed the "MEGA" campaign), 444 high-dispersion IUE spectra of these stars were obtained. This Letter presents an overview of the results of the MEGA campaign and provides an introduction to the three following Letters, which discuss the results for each star.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume452
Issue number1 PART 2
StatePublished - Oct 10 1995
Externally publishedYes

Fingerprint

IUE
stars
stellar rotation
hot stars
proposals
probe
probes
monitoring

Keywords

  • Stars: activity
  • Stars: early-type
  • Stars: mass loss
  • Ultraviolet: stars

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Massa, D., Fullerton, A. W., Nichols, J. S., Owocki, S. P., Prinja, R. K., St-Louis, N., ... White, R. L. (1995). The IUE mega campaign: Wind variability and rotation in early-type stars. Astrophysical Journal, 452(1 PART 2).

The IUE mega campaign : Wind variability and rotation in early-type stars. / Massa, D.; Fullerton, A. W.; Nichols, J. S.; Owocki, S. P.; Prinja, R. K.; St-Louis, N.; Willis, A. J.; Altner, B.; Bolton, C. T.; Cassinelli, J. P.; Cohen, D.; Cooper, R. G.; Feldmeier, A.; Gayley, K. G.; Harries, T.; Heap, S. R.; Henriksen, R. N.; Howarth, I. D.; Hubeny, Ivan -; Kambe, E.; Kaper, L.; Koenigsberger, G.; Marchenko, S.; Mccandliss, S. R.; Moffat, A. F J; Nugis, T.; Puls, J.; Robert, C.; Schulte-Ladbeck, R. E.; Smith, L. J.; Smith, M. A.; Waldron, W. L.; White, R. L.

In: Astrophysical Journal, Vol. 452, No. 1 PART 2, 10.10.1995.

Research output: Contribution to journalArticle

Massa, D, Fullerton, AW, Nichols, JS, Owocki, SP, Prinja, RK, St-Louis, N, Willis, AJ, Altner, B, Bolton, CT, Cassinelli, JP, Cohen, D, Cooper, RG, Feldmeier, A, Gayley, KG, Harries, T, Heap, SR, Henriksen, RN, Howarth, ID, Hubeny, I, Kambe, E, Kaper, L, Koenigsberger, G, Marchenko, S, Mccandliss, SR, Moffat, AFJ, Nugis, T, Puls, J, Robert, C, Schulte-Ladbeck, RE, Smith, LJ, Smith, MA, Waldron, WL & White, RL 1995, 'The IUE mega campaign: Wind variability and rotation in early-type stars', Astrophysical Journal, vol. 452, no. 1 PART 2.
Massa D, Fullerton AW, Nichols JS, Owocki SP, Prinja RK, St-Louis N et al. The IUE mega campaign: Wind variability and rotation in early-type stars. Astrophysical Journal. 1995 Oct 10;452(1 PART 2).
Massa, D. ; Fullerton, A. W. ; Nichols, J. S. ; Owocki, S. P. ; Prinja, R. K. ; St-Louis, N. ; Willis, A. J. ; Altner, B. ; Bolton, C. T. ; Cassinelli, J. P. ; Cohen, D. ; Cooper, R. G. ; Feldmeier, A. ; Gayley, K. G. ; Harries, T. ; Heap, S. R. ; Henriksen, R. N. ; Howarth, I. D. ; Hubeny, Ivan - ; Kambe, E. ; Kaper, L. ; Koenigsberger, G. ; Marchenko, S. ; Mccandliss, S. R. ; Moffat, A. F J ; Nugis, T. ; Puls, J. ; Robert, C. ; Schulte-Ladbeck, R. E. ; Smith, L. J. ; Smith, M. A. ; Waldron, W. L. ; White, R. L. / The IUE mega campaign : Wind variability and rotation in early-type stars. In: Astrophysical Journal. 1995 ; Vol. 452, No. 1 PART 2.
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AU - Willis, A. J.

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AU - Cohen, D.

AU - Cooper, R. G.

AU - Feldmeier, A.

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AU - Puls, J.

AU - Robert, C.

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