The SAURON project - XVI. On the sources of ionization for the gas in elliptical and lenticular galaxies

By M. Sarzi, J. Shields, Kevin Schawinski, Hyunjin Jeong, K. Shapiro, R. Bacon, M. Bureau, M. Cappellari, Roger Davies, P. de Zeeuw and 9 more. 2009

257 citations recorded by the source corpus.

Following our study on the incidence, morphology and kinematics of the ionised gas in early-type galaxies we now address the question of what is powering the observed nebular

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/8cb7807c7c5ec2c74e16d0a48c87d705f37f2353

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In Astronomy and Astrophysics

1. M. Cappellari
2. P. Hopkins
3. T. Naab
4. L. Hernquist
5. M. Sarzi
6. C. Conroy
7. Roger Davies
8. Eric Emsellem

In Nuclear and High Energy Physics

1. D. M. Alexander
2. M. Cappellari
3. T. Naab
4. M. Gaspari
5. R. Maiolino
6. C. Cicone
7. R. Hickox
8. A. C. Fabian

Citations in the corpus

• The ATLAS3D project – XX. Mass–size and mass–σ distributions of early-type galaxies: bulge fraction drives kinematics, mass-to-light ratio, molecular gas fraction and stellar initial mass function (2012, background): “Evidence suggests that the gas is not retained in significant quantities within 1Re, neither in ionized or hot X-ray emission form (Sarzi et al. 2010), nor as a cold component (Paper IV).”
• The ATLAS3D project - XIV. The extent and kinematics of the molecular gas in early-type galaxies (2012, background): “One must be cautious when using EW(Hβ) to trace star-formation in ETGs, as other sources of ionisation can cause Hβ emission (e.g. old stellar populations, Sarzi et al. 2010).”
• THE NATURE OF LINER-LIKE EMISSION IN RED GALAXIES (2011, background): “Sarzi et al. (2010) showed with IFU data that the Hβ equivalent width (EW) is fairly constant throughout each galaxy when excluding the nuclear region; Capetti & Baldi (2011) argued a similar point based on integrated line emission from SDSS.”
• THE HERSCHEL REFERENCE SURVEY: DUST IN EARLY-TYPE GALAXIES AND ACROSS THE HUBBLE SEQUENCE (2011, background): “The origin of LINER activity in ETGs can be ionizing photons from the old stellar population (e.g., di Serego Alighieri et al. 1990; Sarzi et al. 2010), heating by the hot ISM (Sparks et al. 1989) or AGN heating (e.g., González-Mart́ın et al. 2009).”
• Cold Molecular Outflows in the Local Universe and Their Feedback Effect on Galaxies (2018, background): “…class as ‘LIER’, i.e. dropping the ‘N’ which stands for ‘Nuclear’ in the original acronym) and correlates with the old stellar population, and this can be explained in terms of excitation by the hard radiation field produced by evolved post-AGB stars (e.g. Sarzi et al. 2010; Belfiore et al. 2016).”
• The ATLAS3D project - X. On the origin of the molecular and ionized gas in early-type galaxies (2011, background): “…ionisation mechanism in ETGs is thought to be irradation by old stellar populations (e.g. post-asymptotic giant branch stars; Binette et al. 1994; Sarzi et al. 2010), which are uniformly distributed throughout the galaxy, hence ionised gas should be pro- duced at the interface of any part of the…”
• A comprehensive classification of galaxies in the SDSS: How to tell true from fake AGN? (2010, background): “This idea is recently gaining support (Schawinski et al. 2010; Masters et al. 2010; Kaviraj 2010), especially with the detailed study of nearby galaxies (Sarzi et al. 2010; Annibali et al. 2010; Eracleous, Hwang, & Flohic 2010).”
• Mechanical AGN feedback: controlling the thermodynamical evolution of elliptical galaxies (2012, background): “…1993; Goudfrooij et al. 1994; Macchetto et al. 1996; Ferrari et al. 1999; Martel et al. 2000; Tran et al. 2001; Colbert, Mulchaey & Zabludoff 2001; Verdoes Kleijn et al. 2002), which can be both dynamically relaxed or in chaotic motion (Caon, Macchetto & Pastoriza 2000; Sarzi et al. 2006, 2010).”
• IMPROVED AND QUALITY-ASSESSED EMISSION AND ABSORPTION LINE MEASUREMENTS IN SLOAN DIGITAL SKY SURVEY GALAXIES (2011, methodology): “On the other hand, following Sarzi et al. (2010) we could select a number of SDSS spectra of objects totally devoid of nebular emission to construct, with the stellar library, a more limited number of semi-empirical alphaenhanced templates.”