Microwave background temperature at a redshift of 6.34 from H2O absorption

DA Riechers, A Weiss, F Walter, CL Carilli, P Cox… - Nature, 2022 - nature.com
Distortions of the observed cosmic microwave background provide a direct measurement of
the microwave background temperature at redshifts from 0 to 1 (refs.,). Some additional …

Evidence for diffuse molecular gas and dust in the hearts of gamma-ray burst host galaxies-Unveiling the nature of high-redshift damped Lyman-α systems

J Bolmer, C Ledoux, P Wiseman, A De Cia… - Astronomy & …, 2019 - aanda.org
Context. Damped Lyman-α (DLA) absorption-line systems at the redshifts of gamma-ray
burst (GRB) afterglows offer a unique way to probe the physical conditions within star …

X-shooter observations of strong H2-bearing DLAs at high redshift

SA Balashev, VV Klimenko… - Monthly Notices of …, 2019 - academic.oup.com
We present results from spectroscopic observations with X-shooter at the Very Large
Telescope of seven H2-bearing damped Lyman-α systems (DLAs) at high redshifts (z abs∼ …

Direct Measurement of the [C i] Luminosity to Molecular Gas Mass Conversion Factor in High-redshift Star-forming Galaxies

KE Heintz, D Watson - The Astrophysical Journal Letters, 2020 - iopscience.iop.org
The amount of cold, molecular gas in high-redshift galaxies is typically inferred from proxies
of molecular hydrogen (H 2), such as carbon monoxide (CO) or neutral atomic carbon ([C i]) …

Excitation of CO molecules in diffuse gas over cosmic history

VV Klimenko, SA Balashev… - Monthly Notices of …, 2024 - academic.oup.com
We studied the physical conditions in the local interstellar medium (ISM) and at high redshift
by fitting observed column densities of CO and H2 rotational levels and C i fine-structure …

Proximate molecular quasar absorbers-Chemical enrichment and kinematics of the neutral gas

P Noterdaeme, S Balashev, R Cuellar… - Astronomy & …, 2023 - aanda.org
Proximate molecular quasar absorbers (PH 2) are an intriguing population of absorption
systems that was recently uncovered through strong H 2 absorption at a small velocity …

Blind H i and OH absorption line search: first results with MALS and uGMRT processed using ARTIP

N Gupta, P Jagannathan, R Srianand… - The Astrophysical …, 2021 - iopscience.iop.org
We present details of the Automated Radio Telescope Imaging Pipeline (ARTIP) and the
results of a sensitive blind search for H i and OH absorbers at z< 0.4 and z< 0.7 …

HD molecules at high redshift: cosmic ray ionization rate in the diffuse interstellar medium

DN Kosenko, SA Balashev… - Monthly Notices of …, 2021 - academic.oup.com
We present a systematic study of deuterated molecular hydrogen (HD) at high redshift,
detected in absorption in the spectra of quasars. We present four new identifications of HD …

Chemical enrichment and host galaxies of extremely strong intervening DLAs towards quasars-Do they probe the same galactic environments as DLAs associated …

A Ranjan, P Noterdaeme, JK Krogager… - Astronomy & …, 2020 - aanda.org
We present the results from VLT/X-shooter spectroscopic observations of 11 extremely
strong intervening damped Lyman-α absorbers (ESDLAs) that were initially selected as high …

Absorption of Millimeter-band CO and CN in the Early Universe: Molecular Clouds in the Radio Galaxy B2 0902+ 34 at Redshift 3.4

BHC Emonts, SJ Curran, GK Miley… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract Using the Karl G. Jansky Very Large Array, we have detected absorption lines due
to carbon monoxide, CO (J= 0→ 1), and the cyano radical, CN (N= 0→ 1), associated with …