The 5.52 Year Cycle of Eta Carinae
- A. Damineli
- Physics
- 20 March 1996
I have discovered spectroscopic variations correlated with the photometric near-infrared (NIR) light curve in η Carinae. The fading of the high-excitation lines is coincident with the peaks in the…
The Stellar Content of Obscured Galactic Giant H II Regions. II. W42
- R. Blum, P. Conti, A. Damineli
- Physics
- 3 December 1998
We present near-infrared J, H, and K images and K-band spectroscopy in the giant H II region W42. A massive star cluster is revealed; the color-color plot and K-band spectroscopic emission features…
The periodicity of the η Carinae events
- A. Damineli, M. Corcoran, Usa In memoriam
- Physics
- 27 November 2007
Extensive spectral observations of η Carinae over the last cycle, and particularly around the 2003.5 low-excitation event, have been obtained. The variability of both narrow and broad lines, when…
η Carinae: Binarity Confirmed
- A. Damineli, A. Kaufer, B. Wolf, O. Stahl, D. F. Lopes, F. X. de Araújo
- PhysicsAstrophysical Journal
- 17 December 1999
Although deviations from a simple case exist around periastron, intensive monitoring during the next event (mid-2003) will be crucial to the understanding of the system, implying that the energy and dynamics of the event repeat from cycle to cycle.
Eta Carinae: a long period binary?
- A. Damineli, P. Conti, D. Lopes
- Physics
- 1 July 1997
ON THE NATURE OF THE PROTOTYPE LUMINOUS BLUE VARIABLE AG CARINAE. I. FUNDAMENTAL PARAMETERS DURING VISUAL MINIMUM PHASES AND CHANGES IN THE BOLOMETRIC LUMINOSITY DURING THE S-Dor CYCLE
- J. Groh, D. Hillier, A. Damineli, P. Whitelock, F. Marang, C. Rossi
- Physics
- 15 April 2009
We present a detailed spectroscopic analysis of the luminous blue variable (LBV) AG Carinae (AG Car) during the last two visual minimum phases of its S-Dor cycle (1985–1990 and 2000–2003). The…
ATLASGAL-selected massive clumps in the inner Galaxy
- F. Navarete, S. Leurini, K. Menten
- PhysicsAstronomy & Astrophysics
- 8 July 2014
Context. Deuteration has been used as a tracer of the evolutionary phases of low- and high-mass star formation. The APEX Telescope Large Area Survey (ATLASGAL) provides an important repository for a…
Recurrent X-Ray Emission Variations of η Carinae and the Binary Hypothesis
- K. Ishibashi, M. Corcoran, S. White
- Physics
- 20 October 1999
Recent studies by Damineli and coworkers suggest that the supermassive star η Carinae may have a massive stellar companion, although the dense ejecta surrounding the star make this claim hard to test…
A multispectral view of the periodic events in η Carinae
- A. Damineli, D. Hillier, Usa
- Physics
- 27 November 2007
A full description of the 5.5-yr low excitation events in η Carinae is presented. We show that they are not as simple and brief as previously thought, but a combination of two components. The first,…
BONA FIDE, STRONG-VARIABLE GALACTIC LUMINOUS BLUE VARIABLE STARS ARE FAST ROTATORS: DETECTION OF A HIGH ROTATIONAL VELOCITY IN HR CARINAE
- J. Groh, A. Damineli, M. Teodoro
- Physics
- 24 September 2009
We report optical observations of the luminous blue variable (LBV) HR Carinae which show that the star has reached a visual minimum phase in 2009. More importantly, we detected absorptions due to Si…
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