Onthe changes in the physical properties of the ionized region around the Weigelt structures in η Carinae over the 5.54-yr spectroscopic cycle

M Teodoro, TR Gull, MA Bautista… - Monthly Notices of …, 2020 - academic.oup.com
We present HST/STIS observations and analysis of two prominent nebular structures around
the central source of η Carinae, the knots C and D. The former is brighter than the latter for …

The binarity of η Carinae revealed from photoionization modeling of the spectral variability of the weigelt blobs B and D

E Verner, F Bruhweiler, T Gull - The Astrophysical Journal, 2005 - iopscience.iop.org
We focus on two Hubble Space Telescope Space Telescope Imaging Spectrograph (HST
STIS) spectra of the Weigelt blobs B and D, extending from 1640 to 10400 Å, one recorded …

On the Nature of the Central Source in η Carinae

DJ Hillier, K Davidson, K Ishibashi… - The Astrophysical …, 2001 - iopscience.iop.org
Long-slit spectroscopic observations of η Carinae and its Homunculus have recently been
obtained using STIS on the Hubble Space Telescope (HST). We have extracted the …

Identification of emission lines in the low-ionization strontium filament near Eta Carinae

H Hartman, T Gull, S Johansson, N Smith - Astronomy & Astrophysics, 2004 - aanda.org
We have obtained deep spectra from 1640 to 10 100 Å with the Space Telescope Imaging
Spectrograph (STIS) of the strontium filament, a largely neutral emission nebulosity lying …

Eta Carinae across the 2003.5 minimum: the character and variability of the ejecta absorption in the near-ultraviolet

TR Gull, GV Kober, KE Nielsen - The Astrophysical Journal …, 2006 - iopscience.iop.org
Abstract We present Hubble Space Telescope (HST) Space Telescope Imaging
Spectrograph (STIS) high-resolution near-ultraviolet (NUV) spectra of η Car's central source …

η Carinae: linelist for the emission spectrum of the Weigelt blobs in the 1700 to 10 400 Å wavelength region

T Zethson, S Johansson, H Hartman… - Astronomy & Astrophysics, 2012 - aanda.org
Aims. We present line identifications in the 1700 to 10 400 Å region for the Weigelt blobs B
and D, located 0 ″. 1 to 0 ″. 3 NNW of Eta Carinae. The aim of this work is to characterize …

The Ultraviolet Spectrum of η Carinae: Investigation of the Ejecta Absorption

KE Nielsen, TR Gull, GV Kober - The Astrophysical Journal …, 2005 - iopscience.iop.org
We have investigated the far-through mid-UV (1150-2360 Å) spectrum of η Carinae during
the late stages of its broad maximum using the Hubble Space Telescope (HST) Space …

[HTML][HTML] A spectroscopic investigation of Eta Carinae and the Homunculus Nebula. I-Overview of the spectra

DJ Hillier, DA Allen - … and Astrophysics (ISSN 0004-6361), vol …, 1992 - adsabs.harvard.edu
Results of detailed spectral mapping of the luminous blue variable Eta Car and the
encircling Homunculus are presented. It is shown that the Homunculus is primarily a …

A multispectral view of the periodic events in η Carinae

A Damineli, DJ Hillier, MF Corcoran… - Monthly Notices of …, 2008 - academic.oup.com
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 …

η Carinae across the 2003.5 minimum: spectroscopic evidence for massive binary interactions

KE Nielsen, MF Corcoran, TR Gull… - The Astrophysical …, 2007 - iopscience.iop.org
We have analyzed high spatial, moderate spectral resolution observations of η Carinae (η
Car) obtained with the STIS from 1998.0 to 2004.3. The data were obtained at discrete times …