158 citations · 2.3k across the 88 of their papers we have counts for
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Chemical abundances in Seyfert galaxies -- VII. Direct abundance determination of neon based on optical and infrared emission lines
Mark Armah, O. L. Dors, C. P. Aydar +6
For the first time, neon abundance has been derived in the narrow line region from a sample of Seyfert~2 nuclei. In view of this, we compiled from the literature fluxes of optical…
Radio Morphology of Red Geysers
Namrata Roy, Emily Moravec, Kevin Bundy +10
We present 150 MHz, 1.4 GHz, and 3 GHz radio imaging (LoTSS, FIRST and VLASS) and spatially resolved ionized gas characteristics (SDSS IV-MaNGA) for 140 local () early-type…
A Gemini-NIFS view of the merger remnant NGC 34
J. C. Motter, R. Riffel, T. V. Ricci +8
The merger remnant NGC 34 is a local luminous infrared galaxy (LIRG) hosting a nuclear starburst and a hard X-ray source associated with a putative, obscured Seyfert~2 nucleus. In…
AGNIFS survey of local AGN: GMOS-IFU data and outflows in 30 sources
D. Ruschel-Dutra, T. Storchi-Bergmann, A. Schnorr-Müller +6
We analyse optical datacubes of the inner kiloparsec of 30 local () active galactic nuclei (AGN) hosts that our research group, AGNIFS, has collected over the past decade…
The metal-poor dwarf irregular galaxy candidate next to Mrk 1172
Augusto E. Lassen, Rogerio Riffel, Ana L. Chies-Santos +5
In this work we characterise the properties of the object SDSS J020536.84-081424.7, an extended nebular region with projected extension of kpc in the line of s…
Signatures of inflowing gas in red geyser galaxies hosting radio-AGN
Namrata Roy, Kevin Bundy, Kate H. R. Rubin +10
We study cool neutral gas traced by NaD absorption in 140 local ( early-type ``red geyser'' galaxies. These galaxies show unique signatures in spatially-resolved strong…
Electron temperature fluctuations in Seyfert galaxies
Rogemar A. Riffel, Oli L. Dors, Angela Krabbe +1
We use Gemini GMOS-IFU observations of three luminous nearby Seyfert galaxies (Mrk79, Mrk348 and Mrk607) to estimate the electron temperature () fluctuations in the inne…
The AGNIFS survey: distribution and excitation of the hot molecular and ionised gas in the inner kpc of nearby AGN hosts
R. A. Riffel, T. Storchi-Bergmann, R. Riffel +13
We use the Gemini NIFS instrument to map the Hm and Br flux distributions in the inner 0.04-2 kpc of a sample of 36 nearby active galaxies ($0.001\lesssim z\lesssim0…
Evidence of wind signatures in the gas velocity profiles of Red Geysers
Namrata Roy, Kevin Bundy, Rebecca Nevin +9
Spatially resolved spectroscopy from SDSS-IV MaNGA survey has revealed a class of quiescent, relatively common early-type galaxies, termed "red geysers", that possibly host large s…
Gemini NIFS survey of feeding and feedback in nearby Active Galaxies -- IV. Excitation
Rogemar A. Riffel, Marina Bianchin, Rogerio Riffel +5
The near-infrared spectra of Active Galactic Nuclei (AGN) present emission lines of different atomic and molecular species. The mechanisms involved in the origin of these emission…
HI-MaNGA: Tracing the physics of the neutral and ionized ISM with the second data release
David V. Stark, Karen L. Masters, Vladimir Avila-Reese +19
We present the second data release for the HI-MaNGA programme of HI follow-up observations for the SDSS-IV MaNGA survey. This release contains measurements for 3669 unique galaxies…
SDSS-IV MaNGA: the physical origin of off-galaxy H blobs in the local Universe
Xihan Ji, Cheng Li, Renbin Yan +9
H blobs are off-galaxy emission-line regions with weak or no optical counterparts. They are mostly visible in H line, appearing as concentrated blobs. Such unusual objects ha…
Powerful winds in high-redshift obscured and red quasars
Andrey Vayner, Nadia L. Zakamska, Rogemar A. Riffel +10
Quasar-driven outflows must have made their most significant impact on galaxy formation during the epoch when massive galaxies were forming most rapidly. To study the impact of qua…