Erratum: [ITAL]Hubble Space Telescope[/ITAL] Wide Field Planetary Camera 2 Observations of η Carinae [Astron. J. [BF]116[/BF], 2443 (1998)]

Morse, Jon A.; Davidson, Kris; Bally, John; Ebbets, Dennis; Balick, Bruce; Frank, Adam

doi:10.1086/300797

Cited by 71 publications

(160 citation statements)

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“…These apparent motions are not due to brightness fluctuations since when the first-epoch image is magnified and divided into the second-epoch image, the brightness ratios are roughly constant over scales of our measurement boxes . We believe the dark filaments represent motions of actual dust lanes on the surfaces of the lobes-rather than, e.g., shadows projected onto the lobes-because infrared images (e.g., Smith et al 1995;Morris et al 1999) show that the lobes are essentially hollow with most of the mass on the surfaces and broadband HST images (Morse et al 1998;Schulte-Ladbeck et al 1999) show the characteristics of extinction and polarization by dust at those locations.…”

Section: Resultsmentioning

confidence: 88%

“…Their space velocities often exceed 1000 km s Ϫ1 , and spectra obtained along their lengths show a very linear velocity increase with increasing distance from the central source (Weis et al 1999). Morse et al (1998) identified eight such features by their position angle with respect to the central source, although other less organized structures with similar kinematics are also found in the outer debris. We use the term "whiskers" for these features to denote that they are associated with the bipolar outflow; they are not randomly distributed.…”

Section: Resultsmentioning

confidence: 98%

“…Several authors have recently drawn attention to the numerous high-velocity gas columns in the h Car nebula (e.g., Meaburn et al 1996;Morse et al 1998;CD99;Weis, Duschl, & Chu 1999). These are remarkably straight features in the outer debris field that point back directly to the star, with lengthto-width ratios of ∼100 in some cases.…”

Section: Resultsmentioning

confidence: 99%

“…primarily for studying the outer debris field surrounding the Homunculus, were obtained on 1995 June 10 and 1999 June 12. Details of our observing and data reduction procedures are described in Morse et al (1998). The images were reduced in the IRAF/STSDAS 6 software environment.…”

Section: Introductionmentioning

confidence: 99%

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[ITAL]Hubble Space Telescope[/ITAL] Proper-Motion Measurements of the η Carinae Nebula

Morse

Kellogg

Bally

et al. 2001

The Astrophysical Journal

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137

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We present proper-motion measurements of the bipolar lobes and equatorial disk features ejected from h Carinae during the last century and deduce their relative ages in order to determine the likelihood of multiple ejection events. Hubble Space Telescope Wide Field Planetary Camera 2 images taken in 1994, 1995, and 1999 were compared, and the motions of small (∼1Љ) patches throughout the nebula were measured. Assuming that the material has not been accelerated or decelerated, the projected expansion velocities of both lobes and two equatorial features (the "Paddle" and regions in the NN Jet) indicate that the bipolar lobes and fast equatorial ejecta have the same origin date, some 150 years ago during the Great Eruption. We also conclude that the ejection of the partial shell of outer debris preceded the Great Eruption by at least several decades or possibly a century, confirming that the nebula surrounding h Car represents at least two outburst events and maybe more.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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[ITAL]Hubble Space Telescope[/ITAL] Proper-Motion Measurements of the η Carinae Nebula

Morse

Kellogg

Bally

et al. 2001

The Astrophysical Journal

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137

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“…A massive nebula, k12 M (Smith et al 2003b), expelled during the Great Eruption, formed the Homunculus, an expanding bipolar nebula around Car (Morse et al 1998). A smaller bipolar nebula is believed to have been created during the Lesser Eruption of 1890 as well ( Ishibashi et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Accretion by the Secondary in η Carinae During the Spectroscopic Event. I. Flow Parameters

Soker

2005

ApJ

120

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We examine the influence of the gravity of the companion (the secondary) to the massive primary star Carinae on the winds blown by the primary and the secondary. The two winds collide with each other after passing through two respective shock waves, and escape the system while strongly emitting in the X-ray band. While during most of the 5.5 yr orbital period the companion's gravity has a negligible effect on the winds, we find that near periastron the companion's gravity may significantly influence the flow, and the companion might accrete from the primary's wind under certain circumstances. Near periastron passage, the collision region of the two winds may collapse onto the secondary star, a process that could substantially reduce the X-ray luminosity. We suggest that such an accretion process produces the long, almost flat, X-ray minimum in Car.

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Extreme Star Formation

Turner¹

2009

Astrophysics in the Next Decade

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Extreme star formation includes star formation in starbursts and regions forming super star clusters. We survey the current problems in our understanding of the star formation process in starbursts and super star clusters - initial mass functions, cluster mass functions, star formation efficiencies, and radiative feedback into molecular clouds - that are critical to our understanding of the formation and survival of large star clusters, topics that will be the drivers of the observations of the next decade.Comment: appeared in "Astrophysics in the Next Decade: JWST and Concurrent Facilities", Astrophysics and Space Science Proceedings, 2009, ed. H. A. Thronson, M. Stiavelli, and A. G. G. M. Tielens, proceedings of the conference, Astrophysics in the Next Decade, 24-27 September 2007, Tucson, A

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Erratum: [ITAL]Hubble Space Telescope[/ITAL] Wide Field Planetary Camera 2 Observations of η Carinae [Astron. J. [BF]116[/BF], 2443 (1998)]

Cited by 71 publications

References 0 publications

[ITAL]Hubble Space Telescope[/ITAL] Proper-Motion Measurements of the η Carinae Nebula

[ITAL]Hubble Space Telescope[/ITAL] Proper-Motion Measurements of the η Carinae Nebula

Accretion by the Secondary in η Carinae During the Spectroscopic Event. I. Flow Parameters

Extreme Star Formation

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