Integral field spectroscopy of QSO host galaxies

2004 ◽  
Vol 325 (2) ◽  
pp. 128-131 ◽  
Author(s):  
K. Jahnke ◽  
L. Wisotzki ◽  
S. F. Sánchez ◽  
L. Christensen ◽  
T. Becker ◽  
...  
Keyword(s):  
Host Galaxies ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field

Feedback from ionised gas outflows in the central kpc of nearby active galaxies

2020 ◽  
Vol 15 (S359) ◽  
pp. 267-268
Author(s):  
Edwin David ◽  
Thaisa Storchi-Bergmann
Keyword(s):  
Active Galaxies ◽  
Feedback Effect ◽  
Host Galaxies ◽  
Gas Distribution ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Mass Outflow ◽  
Field Unit ◽  
Integral Field

AbstractWe use integral-field spectroscopy obtained with the Gemini instrument GMOS-IFU (Gemini Multi-Object Spectrograph Integral Field Unit) to map the gas distribution, excitation and kinematics in the central kpc of 11 nearby active galaxies. We use channel maps to quantify the ionised gas masses, mass outflow rates and powers of the outflows in order to gauge the feedback effect of these outflows on the host galaxies. We compare this method with others previously used to calculate the feedback power of such outflows.

scholarly journals Integral Field Spectroscopy of z ~ 0.1 QSO Host Galaxies

2009 ◽  
Vol 5 (S267) ◽  
pp. 334-334
Author(s):  
Dading Nugroho ◽  
Knud Jahnke ◽  
Bernd Husemann ◽  
Katherine Inskip ◽  
Sebastian F. Sánchez ◽  
...  
Keyword(s):  
Velocity Fields ◽  
Emission Lines ◽  
Gas Velocity ◽  
Host Galaxies ◽  
Limited Sample ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field Spectrograph ◽  
Integral Field

We observed a volume-limited sample of 19 luminous type 1 QSO host galaxies at MV ~ −23 mag and redshift 0.06 < z < 0.2 (Jahnke et al. 2004) using the VLT/VIMOS Integral Field Spectrograph. After removal of the QSO contribution (using the method of Husemann et al. 2008), we construct 2D intensity maps and gas velocity fields of the host galaxies in the Hα and [O iii] emission lines. Two representative cases are shown in Figure 1.

scholarly journals The Power of Deconvolution for Study of QSO Host Galaxies

2009 ◽  
Vol 5 (S267) ◽  
pp. 117-117
Author(s):  
Géraldine Letawe ◽  
Yannick Letawe ◽  
Pierre Magain
Keyword(s):  
Host Galaxies ◽  
Technical Ability ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field

AbstractThe major challenge in studying QSO host galaxies is to remove the QSO contribution, which often outshines the whole system. Our group has acquired the technical ability to handle such data, for images and slit spectroscopy, as well as integral field spectroscopy. We review here the major techniques developed by our team, and their latest applications. We are open for collaboration with other teams to spread the use of these powerful techniques.

scholarly journals Establishing the impact of powerful AGN on their host galaxies

2019 ◽  
Vol 15 (S359) ◽  
pp. 203-211
Author(s):  
C. M. Harrison ◽  
S. J. Molyneux ◽  
J. Scholtz ◽  
M. E. Jarvis
Keyword(s):  
Star Formation ◽  
Radio Emission ◽  
Emission Line ◽  
Spatial Scales ◽  
Gas Content ◽  
Host Galaxies ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
The Impact ◽  
Integral Field

AbstractEstablishing the role of active galactic nuclei (AGN) during the formation of galaxies remains one of the greatest challenges of galaxy formation theory. Towards addressing this, we summarise our recent work investigating: (1) the physical drivers of ionised outflows and (2) observational signatures of the impact by jets/outflows on star formation and molecular gas content in AGN host galaxies. We confirm a connection between radio emission and extreme ionised gas kinematics in AGN hosts. Emission-line selected AGN are significantly more likely to exhibit ionised outflows (as traced by the [O iii] emission line) if the projected linear extent of the radio emission is confined within the spectroscopic aperture. Follow-up high resolution radio observations and integral field spectroscopy of 10 luminous Type 2 AGN reveal moderate power, young (or frustrated) jets interacting with the interstellar medium. We find that these sources live in highly star forming and gas rich galaxies. Additionally, by combining ALMA-derived dust maps with integral field spectroscopy for eight host galaxies of z ≈ 2 X-ray AGN, we show that Hα emission is an unreliable tracer of star formation. For the five targets with ionised outflows we find no dramatic in-situ shut down of the star formation. Across both of these studies we find that if these AGN do have a negative impact upon their host galaxies, it must be happening on small (unresolved) spatial scales and/or an observable galaxy-wide impact has yet to occur.

scholarly journals The delay time distribution of supernovae from integral-field spectroscopy of nearby galaxies

2020 ◽  
Author(s):  
Asier Castrillo ◽  
Yago Ascasibar ◽  
Lluís Galbany ◽  
Sebastián F Sánchez ◽  
Carles Badenes ◽  
...  
Keyword(s):  
Delay Time ◽  
Time Distribution ◽  
Host Galaxies ◽  
Galaxy Dynamics ◽  
Chemical Enrichment ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Nearby Galaxies ◽  
Integral Field ◽  
Shed Light

Abstract Constraining the delay-time distribution (DTD) of different supernova (SN) types can shed light on the timescales of galaxy chemical enrichment and feedback processes affecting galaxy dynamics, and SN progenitor properties. Here, we present an approach to recover SN DTDs based on integral field spectroscopy (IFS) of their host galaxies. Using a statistical analysis of a sample of 116 supernovae in 102 galaxies, we evaluate different DTD models for SN types Ia (73), II (28) and Ib/c (15). We find the best SN Ia DTD fit to be a power law with an exponent α = −1.1 ± 0.3 (50% confidence interval), and a time delay (between star formation and the first SNe) $\Delta = 50^{+100}_{-35}~Myr$ (50% C.I.). For core collapse (CC) SNe, both of the Zapartas et al. (2017) DTD models for single and binary stellar evolution are consistent with our results. For SNe II and Ib/c, we find a correlation with a Gaussian DTD model with $\sigma = 82^{+129}_{-23}~Myr$ and $\sigma = 56^{+141}_{-9}~Myr$ (50% C.I.) respectively. This analysis demonstrates that integral field spectroscopy opens a new way of studying SN DTD models in the local universe.

scholarly journals The stellar structure of early-type galaxies: a wide-field Mitchell Spectrograph view

2016 ◽  
Vol 11 (S321) ◽  
pp. 288-288
Author(s):  
N. F. Boardman ◽  
A. Weijmans ◽  
R. C. E. van den Bosch ◽  
L. Zhu ◽  
A. Yildirim ◽  
...  
Keyword(s):  
Effective Radius ◽  
Stellar Structure ◽  
Wide Field ◽  
Early Type ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field ◽  
Made In

Much progress has been made in recent years towards understanding how early-type galaxies (ETGs) form and evolve. SAURON (Bacon et al. 2001) integral-field spectroscopy from the ATLAS3D survey (Cappellari et al. 2011) has suggested that less massive ETGs are linked directly to spirals, whereas the most massive objects appear to form from a series of merging and accretion events (Cappellari et al. 2013). However, the ATLAS3D data typically only extends to about one half-light radius (or effective radius, Re), making it unclear if this picture is truly complete.

Testing commercial variable fiber attenuators and lenslet arrays for equalized integral field spectroscopy applications

2008 ◽  
Author(s):  
F. Gracia-Temich ◽  
B. García-Lorenzo ◽  
Y. Padilla-Michel ◽  
J. F. M. Escobar-Romero ◽  
J. J. Fuensalida ◽  
...  
Keyword(s):  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field

scholarly journals Ionization structure and chemical abundances of the Wolf-Rayet nebula NGC 6888 with integral field spectroscopy

2012 ◽  
Vol 541 ◽  
pp. A119 ◽  
Author(s):  
A. Fernández-Martín ◽  
D. Martín-Gordón ◽  
J. M. Vílchez ◽  
E. Pérez Montero ◽  
A. Riera ◽  
...  
Keyword(s):  
Chemical Abundances ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Ionization Structure ◽  
Integral Field
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