Space Telescope Imaging Spectrograph Observations of High‐Velocity Interstellar Absorption‐Line Profiles in the Carina Nebula

2002 ◽  
Vol 140 (2) ◽  
pp. 407-456 ◽  
Author(s):  
Nolan R. Walborn ◽  
Anthony C. Danks ◽  
Gladys Vieira ◽  
Wayne B. Landsman
Keyword(s):  
Absorption Line ◽  
High Velocity ◽  
Line Profiles ◽  
Interstellar Absorption ◽  
Space Telescope ◽  
Carina Nebula ◽  
Imaging Spectrograph

Interstellar Absorption‐Line Evidence for High‐Velocity Expanding Structures in the Carina Nebula Foreground

2007 ◽  
Vol 119 (852) ◽  
pp. 156-169 ◽  
Author(s):  
Nolan R. Walborn ◽  
Nathan Smith ◽  
Ian D. Howarth ◽  
Gladys Vieira Kober ◽  
Theodore R. Gull ◽  
...  
Keyword(s):  
Absorption Line ◽  
High Velocity ◽  
Interstellar Absorption ◽  
Carina Nebula

Ultraviolet Absorption Lines from High-Velocity Gas in the Vela Supernova Remnant: New Insights from Space Telescope Imaging Spectrograph Echelle Observations of HD 72089

1998 ◽  
Vol 492 (2) ◽  
pp. L147-L150 ◽  
Author(s):  
Edward B. Jenkins ◽  
Todd M. Tripp ◽  
Edward L. Fitzpatrick ◽  
Don Lindler ◽  
Anthony C. Danks ◽  
...  
Keyword(s):  
High Velocity ◽  
Supernova Remnant ◽  
Ultraviolet Absorption ◽  
Absorption Lines ◽  
Space Telescope ◽  
Imaging Spectrograph

Space Telescope Imaging Spectrograph Observations of the Interstellar Velocity Structure and Chemical Composition toward the Carina Nebula

1998 ◽  
Vol 492 (2) ◽  
pp. L169-L172 ◽  
Author(s):  
Nolan R. Walborn ◽  
Anthony C. Danks ◽  
Kenneth R. Sembach ◽  
Ralph C. Bohlin ◽  
Edward B. Jenkins ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Velocity Structure ◽  
Space Telescope ◽  
Carina Nebula ◽  
Imaging Spectrograph

scholarly journals CO-to-H2 Abundance Ratio of the Foreground Gas of the Carina Nebula

2004 ◽  
Vol 217 ◽  
pp. 192-193
Author(s):  
Shinn Jong-Ho ◽  
Seon Kwang-Il ◽  
Lee Dae-Hee ◽  
Min Kyoung-Wook
Keyword(s):  
Absorption Band ◽  
Molecular Cloud ◽  
Hubble Space Telescope ◽  
Abundance Ratio ◽  
Hot Stars ◽  
Space Telescope ◽  
International Ultraviolet Explorer ◽  
Carina Nebula ◽  
Far Ultraviolet ◽  
Imaging Spectrograph

We analyze CO and H2 absorption lines of the foreground molecular cloud in the Carina nebula. We use HST-STIS (Hubble Space Telescope - Space Telescope Imaging Spectrograph) & IUE (International Ultraviolet Explorer) INES data to analyze the A-X (v=0→2) absorption band of CO for several hot stars toward the Carina nebula, while 9 stars of them have FUSE (Far Ultraviolet Spectroscopic Explorer) spectra to analyze the (v=0→4) vibrational band in the Lyman series of H2. The column densities of CO and H2 varies in the vicinity of N(CO) ~ 1013cm−2 and N(H2) ~ 1019cm−2, respectively. The resultant CO-to-H2 abundance ratio is about 10−6. We investigate the variation of the abundance ratio according to the relative position of the target stars to morphology the molecular cloud in the Carina nebula.

scholarly journals The stratified disc wind of MCG-03-58-007

2020 ◽  
Vol 500 (1) ◽  
pp. 291-300
Author(s):  
V Braito ◽  
J N Reeves ◽  
P Severgnini ◽  
R Della Ceca ◽  
L Ballo ◽  
...  
Keyword(s):  
Absorption Line ◽  
Velocity Component ◽  
Column Density ◽  
Accretion Disc ◽  
Line Profiles ◽  
Lower Velocity ◽  
Multiple Observations ◽  
Two Phases ◽  
The One ◽  
High Column

ABSTRACT Past Suzaku, XMM–Newton, and NuSTAR observations of the nearby (z = 0.03233) bright Seyfert 2 galaxy MCG-03-58-007 revealed the presence of two deep and blue-shifted iron K-shell absorption line profiles. These could be explained with the presence of two phases of a highly ionized, high column density accretion disc wind outflowing with vout1 ∼ −0.1c and vout2 ∼ −0.2c. Here we present two new observations of MCG-03-58-007: one was carried out in 2016 with Chandra and one in 2018 with Swift. Both caught MCG-03-58-007 in a brighter state ($F_{{\mathrm{2}-10\, keV}} \sim 4 \times 10^{-12}$ erg cm−2 s−1) confirming the presence of the fast disc wind. The multi-epoch observations of MCG-03-58-007 covering the period from 2010 to 2018 were then analysed. These data show that the lower velocity component outflowing with vout1 ∼ −0.072 ± 0.002c is persistent and detected in all the observations, although it is variable in column density in the range NH ∼ 3–8 × 1023 cm−2. In the 2016 Swift observation we detected again the second faster component outflowing with vout2 ∼ −0.2c, with a column density ($N_{\mbox{H}}=7.0^{+5.6}_{-4.1}\times 10^{23}$ cm−2), similar to that seen during the Suzaku observation. However during the Chandra observation 2 yr earlier, this zone was not present (NH < 1.5 × 1023 cm−2), suggesting that this faster zone is intermittent. Overall the multi-epochs observations show that the disc wind in MCG-03-58-007 is not only powerful, but also extremely variable, hence placing MCG-03-58-007 among unique disc winds such as the one seen in the famous QSO PDS456. One of the main results of this investigation is the consideration that these winds could be extremely variable, sometime appearing and sometime disappearing; thus to reach solid and firm conclusions about their energetics multiple observations are mandatory.

The Stellar Content of Henize 2‐10 from Space Telescope Imaging Spectrograph Ultraviolet Spectroscopy

2003 ◽  
Vol 586 (2) ◽  
pp. 939-958 ◽  
Author(s):  
Rupali Chandar ◽  
Claus Leitherer ◽  
Christy Tremonti ◽  
Daniela Calzetti
Keyword(s):  
Ultraviolet Spectroscopy ◽  
Stellar Content ◽  
Space Telescope ◽  
Imaging Spectrograph

scholarly journals HS 1700+6416: the first high-redshift unlensed narrow absorption line-QSO showing variable high-velocity outflows

2012 ◽  
Vol 544 ◽  
pp. A2 ◽  
Author(s):  
G. Lanzuisi ◽  
M. Giustini ◽  
M. Cappi ◽  
M. Dadina ◽  
G. Malaguti ◽  
...  
Keyword(s):  
Absorption Line ◽  
High Velocity ◽  
High Redshift

The On-Orbit Performance of the Space Telescope Imaging Spectrograph

1998 ◽  
Vol 492 (2) ◽  
pp. L83-L93 ◽  
Author(s):  
R. A. Kimble ◽  
B. E. Woodgate ◽  
C. W. Bowers ◽  
S. B. Kraemer ◽  
M. E. Kaiser ◽  
...  
Keyword(s):  
Space Telescope ◽  
Imaging Spectrograph
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