A. J. Young
A5007613392- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
Rutgers, The State University of New Jersey
2019-2024
King's College London
2023
We analyse the molecular and atomic emission lines of 71 bright Herschel-selected galaxies between redshifts 1.4 to 4.6 detected by Atacama Large Millimetre/submillimetre Array. These include a total 156 CO, [C I], H2O lines. For 46 galaxies, we detect two transitions CO lines, for these find gas properties similar those other dusty star-forming galaxy (DSFG) samples. A comparison photo-dissociation models suggests that most have interstellar medium conditions as local infrared-luminous...
Using the IRAM NOrthern Extended Millimetre Array (NOEMA), we conducted a Large Programme ( z -GAL) to measure redshifts for 126 bright galaxies detected in Herschel Astrophysical Area Survey (H-ATLAS), HerMES Mode (HeLMS), and Stripe 82 (HerS) Survey. We report reliable spectroscopic total of 124 -selected galaxies. The are estimated from scans 3 2-mm bands (and, one source, 1-mm band), covering up 31 GHz each band, based on detection at least two emission lines. Together with Pilot...
Using the IRAM NOrthern Extended Millimeter Array (NOEMA), we conducted a program to measure redshifts for 13 bright galaxies detected in Herschel Astrophysical Large Area Survey (H-ATLAS) with $S_{500{\mu}\rm m}\ge$80 mJy. We report reliable spectroscopic 12 individual sources, which are derived from scans of 3 and 2 mm bands, covering up 31 GHz each band, based on detection at least two emission lines. The range $2.08<z<4.05$ median value $z=2.9\pm$0.6. sources unresolved or barely...
We present spectroscopic measurements for 71 galaxies associated with 62 of the brightest high-redshift submillimeter sources from Southern fields Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), while targeting 85 which resolved into 142. have obtained robust redshift all using 12-m Array and an efficient tuning ALMA to optimise its use as a hunter, 73 per cent having identification. Nine these identifications also rely on observations Atacama Compact Array. The redshifts span...
We present 101 and 151 GHz ALMA continuum images for 85 fields selected from Herschel observations that have 500 micron flux densities >80 mJy 250-500 colours consistent with z > 2, most of which are expected to be gravitationally lensed or hyperluminous infrared galaxies. Approximately half the sources were resolved into multiple sources, but 11 15 brightest correspond individual sources. For 37 containing either a single source spectroscopic redshift two same redshift, we examined colour...
(Abridged) Exploiting the sensitivity and broad band width of NOEMA, we have studied molecular gas dust in galaxy HerBS-89a, at z=2.95. High angular resolution images reveal a partial 1.0" diameter Einstein ring continuum emission lines 12CO(9-8) H2O(2_02-1_11). We report detection three fundamental transitions ion OH+, seen absorption; CH+(1-0) absorption (and tentatively emission); two amidogen (NH2), emission; HCN(11-10) and/or NH(1_2-0_1) absorption. The NOEMA data are complemented with...
We present the dust properties of 125 bright Herschel galaxies selected from z -GAL NOEMA spectroscopic redshift survey. All have precise redshifts in range 1.3 < 5.4. The large instantaneous bandwidth provides an exquisite sampling underlying continuum emission at 2 and 3 mm observed frame, with flux densities least four sidebands for each source. Together available 250, 350, 500 μm SCUBA-2 850 densities, spectral energy distribution (SED) source can be analyzed far-infrared to...
The z -GAL survey observed 137 bright Herschel -selected targets with the IRAM Northern Extended Millimeter Array, aim to measure their redshift and study properties. Several of them have been resolved into multiple sources. Consequently, robust spectroscopic redshifts measured for 165 individual galaxies in range 0.8 < 6.5. In this paper we analyse millimetre spectra sources, using both continuum line emission derive physical At least two spectral lines are detected each source,...
ABSTRACT We report on deep SCUBA-2 observations at 850 $\mu$m and NOrthern Extended Millimetre Array (NOEMA) spectroscopic measurements 2 mm of the environment surrounding luminous, massive (M* ≈ × 1011 M⊙) Herschel-selected source HerBS-70. This was revealed by previous NOEMA to be a binary system dusty star-forming galaxies z = 2.3, with east component (HerBS-70E) hosting an active galactic nucleus. The detected, in addition system, 21 sources &gt;3.5σ over area ∼25 square comoving Mpc...
ABSTRACT We have carried out Hubble Space Telescope (HST) snapshot observations at 1.1 μm of 281 candidate strongly lensed galaxies identified in the wide-area extragalactic surveys conducted with Herschel Observatory. Our candidates comprise systems flux densities $500\, \mu$m, S500 ≥ 80 mJy. model and subtract surface brightness distribution for 130 systems, where we identify a foreground lens candidate. After combining visual inspection, archival high-resolution observations, subtraction,...
The following table replaces Table A.5 with the correct Herschel flux densities for three of sources
We report on deep SCUBA-2 observations at 850$\mu$m and NOEMA spectroscopic measurements 2 mm of the environment surrounding luminous, massive ($M_{*} \approx \times 10^{11}$ M$_{\odot}$) Herschel-selected source HerBS-70. This was revealed by previous to be a binary system dusty star-forming galaxies $z= 2.3$, with East component (HerBS-70E) hosting an Active Galactic Nucleus (AGN). The detected, in addition system, twenty-one sources $> 3.5 \sigma$ over area $\sim 25$ square comoving Mpc...
We report new radio observations of SDSS J090122.37+181432.3, a strongly lensed star-forming galaxy at $z=2.26$. image 1.4 GHz (L-band) and 3 (S-band) continuum using the VLA 1.2 mm (band 6) with ALMA, in addition to CO(7-6) CI(${\rm ^3P_2\rightarrow ^3\!P_1}$) lines, all $\lesssim1.^{\prime\prime}7$ resolution. Based on integrated flux densities, we decompose spectrum into its free-free (FF) non-thermal components. The infrared-radio correlation (IRRC) parameter $q_{\rm...
Abstract We report new radio observations of SDSS J090122.37+181432.3, a strongly lensed star-forming galaxy at z = 2.26. image 1.4 GHz ( L -band) and 3 S continuum using the Very Large Array (VLA) 1.2 mm (band 6) with Atacama Millimeter/submillimeter Array, in addition to CO(7–6) C i P 2 → 1 ) lines, all ≲1.″7 resolution. Based on VLA integrated flux densities, we decompose spectrum into its free–free (FF) nonthermal components. The infrared–radio correlation parameter <mml:math...
Abstract Integral field spectroscopy of high-redshift galaxies has become a powerful tool for understanding their dynamics and evolutionary states. However, in the case gravitationally lensed systems, it proved difficult to model both lensing intrinsic kinematics way that takes full advantage information available spectral domain. In this paper, we introduce new method pixel-based source reconstruction alters standard regularization schemes two-dimensional (2D) data leverages kinematic...
(Abridged) Using the IRAM NOEMA interferometer, we measures redshifts of 126 bright galaxies detected in Herschel H-ATLAS, HeLMS, and HerS surveys. We report reliable spectroscopic for a total 124 Herschel-selected galaxies. The are estimated from scans 3 2-mm bands (and, one case, 1-mm band) based on detection at least two emission lines. Together with Pilot Programme (Neri et al. 2020), including 11 sources, our survey has derived precise 135 galaxies, making it largest sample high-z...
The z-GAL survey observed 137 bright Herschel-selected targets with the IRAM NOrthern Extended Millimeter Array, aim to measure their redshift and study properties. Several of them have been resolved into multiple sources. Consequently, robust spectroscopic redshifts measured for 165 individual galaxies in range 0.8<z<6.5. In this paper we analyse millimetre spectra sources, using both continuum line emission derive physical At least two spectral lines are detected each source, including...
(Abridged) We present the dust properties of 125 bright Herschel galaxies selected from z-GAL survey. The large instantaneous bandwidth NOEMA provides an exquisite sampling underlying continuum emission at 2 and 3 mm in observed frame, with flux densities least four side bands for each source. Together available 250, 350, 500 micron SCUBA-2 850 densities, spectral energy distribution source can be analyzed far-infrared to millimeter, a fine Rayleigh-Jeans tail. This wealth data solid basis...
We have carried out HST snapshot observations at 1.1 $\mu$m of 281 candidate strongly lensed galaxies identified in the wide-area extragalactic surveys conducted with Herschel space observatory. Our candidates comprise systems flux densities $500\,\mu$m$ S_{500}\geq 80$ mJy. model and subtract surface brightness distribution for 130 systems, where we identify a foreground lens candidate. After combining visual inspection, archival high-resolution observations, subtraction, divide into...