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Concept

Étoile variable de type T Tauri

Publications associées (31)

The Lyman alpha reference sample VII. Spatially resolved H alpha kinematics

Hakim Atek

We present integral field spectroscopic observations with the Potsdam Multi-Aperture Spectrophotometer of all 14 galaxies in the z similar to 0.1 Lyman Alpha Reference Sample (LARS). We produce 2D line-of-sight velocity maps and velocity dispersion maps fr ...

Edp Sciences S A2016

Disc colours in field and cluster spiral galaxies at 0.5 less than or similar to z less than or similar to 0.8

Frédéric Courbin, Georges Meylan, Pascale Jablonka, Nicolas Jacques Joseph Marie Cantale

We present a detailed study of the colours of late-type galaxy discs for ten of the EDisCS galaxy clusters with 0.5 less than or similar to z less than or similar to 0.8. Our cluster sample contains 172 spiral galaxies, and our control sample is composed o ...

Edp Sciences S A2016

A weak lensing comparability study of galaxy mergers that host AGNs

Frédéric Courbin, David Richard Harvey

We compared the total mass density profiles of three different types of galaxies using weak gravitational lensing: (i) 29 galaxies that host quasars at (z) over bar similar to 0.32 that are in a post-starburst quasar (PSQ) phase with high star formation in ...

Wiley-Blackwell2015

Molecular gas content in strongly lensed z similar to 1.5-3 star-forming galaxies with low infrared luminosities

Jean-Paul Richard Kneib

To extend the molecular gas measurements to more typical star-forming galaxies (SFGs) with star formation rates SFR < 40 M-circle dot yr(-1) and stellar masses M-* < 2.5 x 10(10) M-circle dot at z similar to 1.5-3, we have observed CO emission with the IRA ...

EDP Sciences2015

Colors for Molecular Masses: Fusion of Spectroscopy and Mass Spectrometry for Identification of Biomolecules

Oleg Boyarkine, Vladimir Kopysov

We present an approach that integrates ultraviolet (UV) photofragmentation spectroscopy of cold ions with high-resolution Orbitrap mass spectrometry (MS) and uses mathematical analysis of the recorded 2D data arrays for structural identification of biomole ...

Amer Chemical Soc2015

[C II] and 12CO (1-0) emission maps in HLSJ091828. 6+ 514223: a strongly lensed interacting system at z= 5.24

Jean-Paul Richard Kneib, Benjamin Yvan Alexandre Clement

We present Submillimeter Array [ C II] 158 mu m and Karl G. Jansky Very Large Array (CO)-C-12(1-0) line emission maps for the bright, lensed, submillimeter source at z = 5.2430 behind A 773: HLSJ091828.6+514223 (HLS0918). We combine these measurements with ...

American Astronomical Society2014

Hubble Space Telescope Grism Spectroscopy Of Extreme Starbursts Across Cosmic Time: The Role Of Dwarf Galaxies In The Star Formation History Of The Universe

Jean-Paul Richard Kneib, Hakim Atek

Near infrared slitless spectroscopy with the Wide Field Camera 3, on board the Hubble Space Telescope, offers a unique opportunity to study low-mass galaxy populations at high redshift (z similar to 1-2). While most high-z surveys are biased toward massive ...

American Astronomical Society2014

Uvudf: Ultraviolet Imaging Of The Hubble Ultra Deep Field With Wide-Field Camera 3

Hakim Atek

We present an overview of a 90 orbit Hubble Space Telescope treasury program to obtain near-ultraviolet imaging of the Hubble Ultra Deep Field using the Wide Field Camera 3 UVIS detector with the F225W, F275W, and F336W filters. This survey is designed to: ...

Institute of Physics2013

Low Masses And High Redshifts: The Evolution Of The Mass-Metallicity Relation

Hakim Atek

We present the first robust measurement of the high redshift mass-metallicity (MZ) relation at 10(8) less than or similar to M/M-circle dot less than or similar to 10(10), obtained by stacking spectra of 83 emission-line galaxies with secure redshifts betw ...

Iop Publishing Ltd2013

HST/WFC3 Near-Infrared spectroscopy of quenched galaxies at z~1.5 from the WISP Survey: Stellar population properties

Hakim Atek

We combine Hubble Space Telescope (HST) G102 and G141 near-IR (NIR) grism spectroscopy with HST/WFC3UVIS, HST/WFC3-IR, and Spitzer/IRAC [3.6 mu m] photometry to assemble a sample ofmassive (log(M-star/M-circle dot) similar to 11.0) and quenched (specific s ...

American Astronomical Society2013

Cl 1103.7-1245 at z=0.96: the highest redshift galaxy cluster in the EDisCS survey

Pascale Jablonka

We present new spectroscopic observations in a field containing the highest redshift cluster of the ESO Distant Cluster Survey (EDisCS). We measure galaxy redshifts and determine the velocity dispersions of the galaxy structures located in this field. Toge ...

Edp Sciences S A2012