81 citations · 274 across the 29 of their papers we have counts for
23 papers · 1 filter
Investigating the ionization mechanisms powering the extreme emission lines in metal-poor galaxies
C. Daoutis, V. Lebouteiller, D. Schaerer +11
Extreme emission metal-poor galaxies (EEMPGs) are excellent local laboratories for understanding the extreme physical conditions and ionizing radiation fields in the early Universe…
JWST Reveals Compact Nuclear Starbursts Masquerading as AGNs in Metal-Poor Dwarfs: Where Are the Accreting Intermediate-Mass Black Holes?
William Matzko, Shobita Satyapal, Jeffrey D. Mckaig +19
We present JWST/NIRSpec spectroscopy of the low-mass, metal-poor galaxy SDSS~J160135.95+311353.7 (J1601), selected for its extreme mid-infrared colors and compact nuclear emission,…
Probing the Nature of Lyman Continuum Emitting and Low-metallicity Galaxies Using the SKA
Omkar Bait, Daniel Schaerer, Mark Sargent
The sources responsible for cosmic reionization remain a key open question in observational cosmology. Recent JWST results increasingly suggest that low-mass star-forming galaxies…
Power-law Emission-line Wings and Radiation-Driven Superwinds in Local Lyman Continuum Emitters
Lena Komarova, Sally Oey, Rui Marques-Chaves +27
We investigate broad emission-line wings, reaching , observed in 26 galaxies with Lyman continuum (LyC) observations, primarily from the Low-redshift Lyman C…
The Lyman-alpha and Continuum Origins Survey II: the connection between the escape of ionizing radiation and Lyman-alpha halos in star-forming galaxies
A. Saldana-Lopez, M. J. Hayes, A. Le Reste +24
One of the current challenges in galaxy evolution studies is to establish the mechanisms that govern the escape of ionizing radiation from galaxies. Here, we investigate the connec…
Jet-mode feedback in NGC 5972: insights from resolved MUSE, GMRT and VLA observations
Arshi Ali, Biny Sebastian, Darshan Kakkad +10
NGC 5972, a Voorwerp galaxy, features a helical-shaped extended emission-line region (EELR) with a radius > 10 kpc and a S-shaped radio structure spanning about 470 kpc. We use VLT…
Radio Spectral Energy Distribution of Low- Metal Poor Extreme Starburst Galaxies: Novel insights on the escape of ionizing photons
Omkar Bait, Daniel Schaerer, Yuri I. Izotov +1
Recent optical surveys have identified a rare population of low- () extreme star-forming galaxies (xSFGs) characterized by very low metallicity, strong emiss…
A Tale of NGC 3785: The Formation of an Ultra-Diffuse Galaxy at the end of the Longest Tidal Tail
Chandan Watts, Sudhanshu Barway, Omkar Bait +1
We present the discovery of an extended and faint tail observed in the isolated environment associated with galaxy NGC 3785. This study additionally provides observational evidence…
The Low-Redshift Lyman Continuum Survey: The Roles of Stellar Feedback and ISM Geometry in LyC Escape
Sophia R. Flury, Anne E. Jaskot, Alberto Saldana-Lopez +30
One of the fundamental questions of cosmology is the origin and mechanism(s) responsible for the reionization of the Universe beyond . To address this question, many studie…
The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies
Cody A. Carr, Renyue Cen, Claudia Scarlata +25
Feedback is widely recognized as an essential condition for Lyman continuum (LyC) escape in star-forming galaxies. However, the mechanisms by which galactic outflows clear neutral…
HI Imaging of a Blueberry Galaxy Suggests a Merger Origin
Saili Dutta, Apurba Bera, Omkar Bait +3
Blueberry galaxies (BBs) are fainter, less massive, and lower redshift counterparts of the Green pea galaxies. They are thought to be the nearest analogues of the high redshift Lym…
Ubiquitous broad-line emission and the relation between ionized gas outflows and Lyman continuum escape in Green Pea galaxies
R. O. Amorín, M. Rodríguez-Henríquez, V. Fernández +29
We report observational evidence of highly turbulent ionized gas kinematics in a sample of 20 Lyman continuum (LyC) emitters (LCEs) at low redshift (). Detailed Gaussian…
Linking Mg II and [O II] spatial distribution to ionizing photon escape in confirmed LyC leakers and non-leakers
Floriane Leclercq, John Chisholm, Wichahpi King +29
The geometry of the neutral gas in and around galaxies is a key regulator of the escape of ionizing photons. We present the first statistical study aiming at linking the neutral an…
Low-redshift Lyman Continuum Survey: Radio continuum properties of low- Lyman continuum emitters
Omkar Bait, Sanchayeeta Borthakur, Daniel Schaerer +20
Sources that leak Lyman-continuum (LyC) photons and lead to the reionisation of the universe are intensely studied using multiple observing facilities. Recently, the Low-redshift L…
Rejuvenating Star Formation Activity in an Early-type Dwarf Galaxy, LEDA 1915372, with Accreted HI Gas
Sanjaya Paudel, Suk-Jin Yoon, Omkar Bait +5
We report a rare astrophysical phenomenon, in which an early-type dwarf galaxy (dE), LEDA 1915372, is accreting gas from a nearby star-forming dwarf galaxy, MRK 0689, and is rejuve…
Probing galaxy evolution through HI 21-cm emission and absorption: current status and prospects with the Square Kilometre Array
Rajeshwari Dutta, Sushma Kurapati, J. N. H. S. Aditya +8
One of the major science goals of the Square Kilometre Array (SKA) is to understand the role played by atomic hydrogen (HI) gas in the evolution of galaxies throughout cosmic time.…
Star-forming S0 Galaxies in SDSS-MaNGA: fading spirals or rejuvenated S0s?
Himansh Rathore, Kavin Kumar, Preetish K. Mishra +2
We investigate the origin of rare star-formation in an otherwise red-and-dead population of S0 galaxies using spatially resolved spectroscopy. Our sample consists of low reds…
Predicting star formation properties of galaxies using deep learning
Shraddha Surana, Yogesh Wadadekar, Omkar Bait +1
Understanding the star-formation properties of galaxies as a function of cosmic epoch is a critical exercise in studies of galaxy evolution. Traditionally, stellar population synth…
Discovery of a large HI ring around the quiescent galaxy AGC 203001
Omkar Bait, Sushma Kurapati, Pierre-Alain Duc +4
Here we report the discovery with the Giant Metrewave Radio Telescope of an extremely large (115 kpc in diameter) HI ring off-centered from a massive quenched galaxy, AGC 203…
Radio continuum emission from local analogs of high-z faint LAEs: Blueberry galaxies
Biny Sebastian, Omkar Bait
We present a radio continuum study of a population of extremely young and starburst galaxies, termed as blueberries at 1 GHz using the upgraded Giant Metrewave Radio Teles…
Outlying H emitters in SDSS IV MaNGA
Omkar Bait, Yogesh Wadadekar, Sudhanshu Barway
We have carried out a systematic search for outlying H emitters in the entire data release 14 of the Sloan Digital Sky Survey (SDSS) IV Mapping Nearby Galaxies at APO (MaNGA) su…
Outlying H blobs in SDSS IV MaNGA
Omkar Bait, Yogesh Wadadekar, Sudhanshu Barway
We have discovered a population of 29 outlying H emitters which appear like unresolved blobs in the DR14 data release of the SDSS IV MaNGA integral field unit survey. They do no…
On the interdependence of galaxy morphology, star formation, and environment in massive galaxies in the nearby Universe
Omkar Bait, Sudhanshu Barway, Yogesh Wadadekar
Using multi-wavelength data, from UV-optical-near-mid IR, for 6000 galaxies in the local Universe, we study the dependence of star formation on the morphological T-types for…