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24 papers
The RAdio Galaxy Environment Reference Survey (RAGERS): Evidence of an anisotropic distribution of submillimeter galaxies in the 4C 23.56 protocluster at z=2.48
Dazhi Zhou, Thomas R. Greve, Bitten Gullberg +41
High-redshift radio(-loud) galaxies (HRGs) are massive galaxies with powerful radio-loud active galactic nuclei (AGNs) and serve as beacons for protocluster identification. Howe…
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
The Event Horizon Telescope Collaboration
We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A), the Galactic center source associated with a supermassive black hole. These observati…
Early Science with the Large Millimeter Telescope: a 1.1 mm AzTEC Survey of Red- dusty star-forming galaxies
A. Montaña, J. A. Zavala, I. Aretxaga +32
We present LMT/AzTEC 1.1mm observations of luminous high-redshift dusty star-forming galaxy candidates from the sq.deg -ATLAS survey, selected on the…
Early Science with the Large Millimeter Telescope: Constraining the Gas Fraction of a Compact Quiescent Galaxy at z=1.883
Joyce N. Caliendo, Katherine E. Whitaker, Mohammad Akhshik +14
We present constraints on the dust continuum flux and inferred gas content of a gravitationally lensed massive quiescent galaxy at =1.8830.001 using AzTEC 1.1mm imaging wit…
AzTEC Survey of the Central Molecular Zone: Data Reduction, Analysis, and Preliminary Results
Yuping Tang, Q. Daniel Wang, Grant W. Wilson +14
We present a large-scale survey of the central molecular zone (CMZ) of our Galaxy, as well as a monitoring program of Sgr A*, with the AzTEC/Large Millimeter Telescope (LMT) in the…
A Radio-to-millimeter Census of Star-forming Galaxies in Protocluster 4C~23.56 at z = 2.5 : Global and local gas kinematics
Minju M. Lee, Ichi Tanaka, Ryohei Kawabe +12
We present a study of the gas kinematics of star-forming galaxies associated with protocluster 4C 23.56 at using resolution CO (4-3) data taken with ALMA. Eleven H…
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
The Event Horizon Telescope Collaboration
The Event Horizon Telescope (EHT) is a very long baseline interferometry (VLBI) array that comprises millimeter- and submillimeter-wavelength telescopes separated by distances comp…
AzTEC 1.1 mm observations of high-z protocluster environments: SMG overdensities and misalignment between AGN jets and SMG distribution
M. Zeballos, I. Aretxaga, D. H. Hughes +20
We present observations at 1.1 mm towards 16 powerful radio galaxies and a radio-quiet quasar at 0.5<z<6.3 acquired with the AzTEC camera mounted at the JCMT and ASTE to study the…
Multiple component decomposition from millimeter single-channel data
Iván Rodríguez-Montoya, David Sánchez-Argüelles, Itziar Aretxaga +6
We present an implementation of a blind source separation algorithm to remove foregrounds off millimeter surveys made by single-channel instruments. In order to make possible such…
A dusty star-forming galaxy at z=6 revealed by strong gravitational lensing
Jorge A. Zavala, Alfredo Montaña, David H. Hughes +28
Since their discovery, submillimetre-selected galaxies (SMGs) have revolutionized the field of galaxy formation and evolution. From the hundreds of square degrees mapped at submill…
A radio-to-mm census of star-forming galaxies in protocluster 4C23.56 at z=2.5 : Gas mass and its fraction revealed with ALMA
Minju M. Lee, Ichi Tanaka, Ryohei Kawabe +18
We investigate gas contents of star-forming galaxies associated with protocluster 4C23.56 at z = 2.49 by using the redshifted CO(3-2) and 1.1 mm dust continuum with the Atacama Lar…
Early Science with the Large Millimeter Telescope: Detection of dust emission in multiple images of a normal galaxy at lensed by a Frontier Fields cluster
Alexandra Pope, Alfredo Montana, Andrew Battisti +32
We directly detect dust emission in an optically-detected, multiply-imaged galaxy lensed by the Frontier Fields cluster MACSJ0717.5+3745. We detect two images of the same galaxy at…
Early Science with the Large Millimeter Telescope: discovery of the 12CO(1-0) emission line in the ring galaxy, VIIZw466
O. Ivy Wong, O. Vega, D. Sánchez-Argüelles +9
We report an early science discovery of the CO(1-0) emission line in the collisional ring galaxy, VII Zw466, using the Redshift Search Receiver instrument on the Large Millimeter T…
Deep LMT/AzTEC millimeter observations of Epsilon Eridani and its surroundings
M. Chavez-Dagostino, E. Bertone, F. Cruz-Saenz de Miera +21
Epsilon Eridani is a nearby, young Sun-like star that hosts a ring of cool debris analogous to the solar system's Edgeworth-Kuiper belt. Early observations at (sub-)mm wavelengths…
Early Science with the Large Millimeter Telescope: Observations of Extremely Luminous High-z Sources Identified by Planck
K. C. Harrington, Min S. Yun, R. Cybulski +17
We present 8.5 arcsec resolution 1.1mm continuum imaging and CO spectroscopic redshift measurements of eight extremely bright submillimetre galaxies identified from the Planck and…
Early Science with the Large Millimeter Telescope: COOL BUDHIES I - a pilot study of molecular and atomic gas at z~0.2
Ryan Cybulski, Min S. Yun, Neal Erickson +20
An understanding of the mass build-up in galaxies over time necessitates tracing the evolution of cold gas (molecular and atomic) in galaxies. To that end, we have conducted a pilo…
Early Science with the Large Millimeter Telescope: CO and [C II] Emission in the z=4.3 AzTEC J095942.9+022938 (COSMOS AzTEC-1)
Min S. Yun, I. Aretxaga, M. A. Gurwell +27
Measuring redshifted CO line emission is an unambiguous method for obtaining an accurate redshift and total cold gas content of optically faint, dusty starburst systems. Here, we r…
Early Science with the Large Millimeter Telescope: Observations of dust continuum and CO emission lines of cluster-lensed submillimetre galaxies at z=2.0-4.7
J. A. Zavala, M. S. Yun, I. Aretxaga +19
We present Early Science observations with the Large Millimeter Telescope, AzTEC 1.1 mm continuum images and wide bandwidth spectra (73-111 GHz) acquired with the Redshift Search R…
Early Science with the Large Millimeter Telescope: Dust constraints in a z~9.6 galaxy
J. A. Zavala, M. J. Michałowski, I. Aretxaga +8
Recent observations with the GISMO (Goddard-IRAM Superconducting 2 Millimeter Observer) 2 mm camera revealed a detection 8 arcsec away from the lensed galaxy MACS1149-JD1 at z=9.6.…
The Red Radio Ring: a gravitationally lensed hyperluminous infrared radio galaxy at z=2.553 discovered through citizen science
J. E. Geach, A. More, A. Verma +49
We report the discovery of a gravitationally lensed hyperluminous infrared galaxy (L_IR~10^13 L_sun) with strong radio emission (L_1.4GHz~10^25 W/Hz) at z=2.553. The source was ide…
The source counts of submillimetre galaxies detected at 1.1 mm
K. S. Scott, G. W. Wilson, I. Aretxaga +21
The source counts of galaxies discovered at sub-millimetre and millimetre wavelengths provide important information on the evolution of infrared-bright galaxies. We combine the dat…
AzTEC 1.1 mm images of 16 radio galaxies at 0.5<z<5.2 and a quasar at z=6.3
A. Humphrey, M. Zeballos, I. Aretxaga +12
We present 1.1 mm observations for a sample of 16 powerful radio galaxies at 0.5<z<5.2 and a radio quiet quasar at z=6.3, obtained using the AzTEC bolometer array mounted on the AS…
AzTEC millimeter survey of the COSMOS field - III. Source catalog over 0.72 sq. deg. and plausible boosting by large-scale structure
I. Aretxaga, G. W. Wilson, E. Aguilar +15
We present a 0.72 sq. deg. contiguous 1.1mm survey in the central area of the COSMOS field carried out to a 1sigma ~ 1.26 mJy/beam depth with the AzTEC camera mounted on the 10m At…
Deep 1.1 mm-wavelength imaging of the GOODS-S field by AzTEC/ASTE - I. Source catalogue and number counts
K. S. Scott, M. S. Yun, G. W. Wilson +20
[Abridged] We present the first results from a 1.1 mm confusion-limited map of the GOODS-S field taken with AzTEC on the ASTE telescope. We imaged a 270 sq. arcmin field to a 1σdep…