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Gas surrounding high redshift galaxies has been studied through observations of absorption line systems toward background quasars for decades. However, it has proven difficult to identify and characterize the galaxies associated with these…

Astrophysics of Galaxies · Physics 2017-04-12 Marcel Neeleman , Nissim Kanekar , J. Xavier Prochaska , Marc Rafelski , Chris L. Carilli , Arthur M. Wolfe

Massive, intensely star-forming galaxies at high redshift require a supply of molecular gas from their gas reservoirs, replenished by infall from the surrounding circumgalactic medium, to sustain their immense star-formation rates. However,…

Although about a dozen high redshift (z larger than 2) starburst galaxies have been recently detected in the CO lines, spectroscopic detections of molecular gas of very young galaxies are still very difficult. The CO lines are usually…

Astrophysics · Physics 2017-08-23 F. Combes

Gas-rich galaxies are selected efficiently via quasar absorption lines. Recently, a new perspective on such absorption-selected systems has opened up by studying the molecular gas content of absorber host galaxies using ALMA CO emission…

Astrophysics of Galaxies · Physics 2018-10-17 A. Klitsch , M. A. Zwaan , C. Peroux , I. Smail , I. Oteo , G. Popping , A. M. Swinbank , R. J. Ivison , A. D. Biggs

We report the discovery of five quasars with redshifts of 4.67 - 5.27 and z'-band magnitudes of 19.5-20.7 M_B ~ -27. All were originally selected as distant quasar candidates in optical/near-infrared photometry from the Sloan Digital Sky…

We present spectroscopic observations obtained with the FORS1 instrument on the ESO VLT under good seeing conditions of the radio-quiet z_em = 3.04 quasar Q1205-30 and its associated extended Lyman-alpha emission. The extended Lyman-alpha…

Astrophysics · Physics 2009-11-10 M. Weidinger , P. Moller , J. P. U. Fynbo , B. Thomsen

We report the detection of a distant star-forming galaxy, ALMA J010748.3-173028, which is identified by a 13-sigma emission line at 99.75 GHz (SdV = 3.1 Jy km/s), behind the nearby merging galaxies VV114 using the Atacama Large…

Astrophysics of Galaxies · Physics 2014-01-03 Yoichi Tamura , Toshiki Saito , Takeshi G. Tsuru , Hiroyuki Uchida , Daisuke Iono , Min S. Yun , Daniel Espada , Ryohei Kawabe

We present CO(1-0), CO(3-2), and CO(7-6) observations using the Green Bank Telescope (GBT) and the Atacama Large Millimeter Array (ALMA) of the z=2.8 sub-millimeter galaxy SMM J02399-0136. This was the first submillimeter-selected galaxy…

Astrophysics of Galaxies · Physics 2018-06-27 David T. Frayer , Ronald J. Maddalena , R. J. Ivison , Ian Smail , Andrew W. Blain , Paul Vanden Bout

We present the first results from a program searching for extended Ly$\alpha$ halos around high redshift ($ z \gtrsim 6.5$) quasars using the red channel of the Keck Cosmic Web Imager (KCWI). Our observations reveal a Ly$\alpha$ halo…

Quasar proximity zones at $z>5.5$ correspond to over-dense and over-ionized environments. Galaxies found inside proximity zones can therefore display features which would otherwise be masked by absorption in the IGM. We demonstrate the…

Astrophysics of Galaxies · Physics 2020-06-17 Sarah E. I. Bosman , Koki Kakiichi , Romain A. Meyer , Max Gronke , Nicolas Laporte , Richard S. Ellis

We present results of a blind search for line-emitting galaxies using ALMA Lensing Cluster Survey data. We detected seven line emitters, one of which is [C\,{\sc ii}] at $z = 6.071$, four are CO at $z = 0.8$--1.1, and the remaining two are…

We present the detection of $^{12}$CO(2-1) in the $z = 4.44$ submillimetre galaxy ALESS65.1 using the Australia Telescope Compact Array. A previous ALMA study of submillimetre galaxies in the Extended Chandra Deep Field South determined the…

We report the detection of the CO J=1-0 emission line in [H89]1821+643, one of the most optically luminous QSOs in the local Universe and a template ULIRG-to-QSO transition object, located in a rich cool-core cluster at z=0.297. The CO…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Manuel Aravena , Jeff Wagg , Padelis Papadopoulos , Ilana Feain

We report the discovery of Lyman-alpha emission (Ly$\alpha$) in the bright galaxy EGSY-2008532660 (hereafter EGSY8p7) using the MOSFIRE spectrograph at the Keck Observatory. First reported by Roberts-Borsani et al. (2015), it was selected…

The extraordinarily bright quasar PHL 1811 at a redshift z = 0.192 provides an attractive opportunity to use ultraviolet absorption-line spectroscopy to study the properties of gas systems in the local universe. An R = 20,000 far-UV…

An analysis of 44 GHz VLA observations of the z = 1.574 radio-loud quasar 3C318 has revealed emission from the redshifted J = 1 - 0 transition of the CO molecule and spatially resolved the 6.3 kpc radio jet associated with the quasar at 115…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Ian Heywood , Alejo Martinez-Sansigre , Chris J. Willott , Steve Rawlings

We present Plateau de Bure Interferometer observations of far infra-red emission lines in BRI 0952-0115, a lensed quasar at z=4.4 powered by a super-massive black hole (M_BH=2x10^9 M_sun). In this source, the resolved map of the [CII]…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-06 Simona Gallerani

We present for the first time the detection of mid-J CO line emission in the outskirts of an evolved massive star, which indicates the presence of warm and/or high density molecular gas. Aiming to learn about the interplay between evolved…

Astrophysics · Physics 2009-11-13 J. R. Rizzo , F. M. Jimenez-Esteban , E. Ortiz

We report the spectroscopic confirmation of two Lyman break galaxies at redshift > 7. The galaxies were observed as part of an ultra-deep spectroscopic campaign with FORS2 at the ESO/VLT for the confirmation of z~7 ``z--band dropout''…

Using ALMA, we report high angular-resolution observations of the redshift z=3.63 galaxy, G09v1.97, one of the most luminous strongly lensed galaxies discovered by the H-ATLAS survey. We present 0"2-0"4 resolution images of the rest-frame…