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Related papers: PSCz-1.2 Jy Comparison: A Spherical Harmonics Appr…

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We investigate the ISM properties of 13 star-forming galaxies within the z~2 COSMOS cluster. We show that the cluster members have [NII]/Ha and [OIII]/Hb emission-line ratios similar to z~2 field galaxies, yet systematically different…

The Gaia satellite revealed a remarkable spiral pattern ('phase spiral', PS) in the z-Vz phase-plane throughout the solar neighbourhood, where z and Vz are the displacement and velocity of a star perpendicular to the Galactic plane. As…

Astrophysics of Galaxies · Physics 2025-08-21 Thor Tepper-García , Joss Bland-Hawthorn , Timothy R. Bedding , Christoph Federrath , Oscar Agertz

We investigate the impact of different redshift distributions of random samples on the baryon acoustic oscillations (BAO) measurements of $D_V(z)r_\mathrm{d}^\mathrm{fid}/r_\mathrm{d}$ from the two-point correlation functions (2PCF) of…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-11 Shao-Jiang Wang , Qi Guo , Rong-Gen Cai

We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km/s. At large scales where linear theory applies, the comparison…

This work aims to provide a first insight into the mass-metallicity (MZ) relation of star-forming galaxies at redshift z~1.4. To reach this goal, we present a first set of nine VVDS galaxies observed with the NIR integral-field spectrograph…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 J. Queyrel , T. Contini , E. Perez-Montero , B. Garilli , O. Le Fevre , M. Kissler-Patig , B. Epinat , D. Vergani , L. Tresse , P. Amram , M. Lemoine-Busserolle

We compute the bispectrum for the galaxy distribution in the IRAS QDOT, 2Jy, and 1.2Jy redshift catalogs for wavenumbers 0.05<k<0.2 h/Mpc and compare the results with predictions from gravitational instability in perturbation theory. Taking…

Astrophysics · Physics 2009-10-31 R. Scoccimarro , H. A. Feldman , J. N. Fry , J. Frieman

We spectroscopically confirm a new protocluster in the COSMOS field at $z$=2.24430 with Keck/MOSFIRE, dubbed CC2.2B, which is in the immediate vicinity of CC2.2A protocluster, originally presented in \cite{Darvish20}. CC2.2B and CC2.2A…

We present Spitzer 70 and 160 micron observations of the COSMOS Spitzer survey (S-COSMOS). The data processing techniques are discussed for the publicly released products consisting of images and source catalogs. We present accurate 70 and…

This is a consecutive paper on the timelike geodesic structure of static spherically symmetric spacetimes. First we show that for a stable circular orbit (if it exists) in any of these spacetimes all the infinitesimally close to it timelike…

General Relativity and Quantum Cosmology · Physics 2015-06-19 Leszek M. Sokołowski , Zdzisław A. Golda

We report on a detailed study of the measurement stability for WFC3 IR grism stare and spatial scan observations. The excess measurement noise for both modes is established by comparing the observed and theoretical measurement…

Instrumentation and Methods for Astrophysics · Physics 2013-11-18 Mark R. Swain , Pieter Deroo , Kiri L. Wagstaff

Magnetic monopole is a well-motivated class of beyond-Standard-Model particles that could provide insights into the long-standing puzzle of the quantization of electric charge. These hypothetical particles are likely to be super heavy…

High Energy Physics - Experiment · Physics 2024-09-13 Changqing Ye , Beige Liu , Zhe Cao , Lingzhi Han , Xinming Huang , Min Jiang , Dong Liu , Qing Lin , Shitian Wan , Yusheng Wu , Lei Zhao , Yue Zhang , Xinhua Peng , Zhengguo Zhao

We present two-dimensional, integral field spectroscopy covering the rest-frame wavelengths of strong optical emission lines in nine sub-mm-luminous galaxies (SMGs) at 2.0<z<2.7. The GEMINI-NIFS and VLT-SINFONI imaging spectroscopy allows…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 S. Alaghband-Zadeh , S. C. Chapman , A. M. Swinbank , Ian Smail , C. M. Harrison , D. M. Alexander , C. M. Casey , R. Dave , D. Narayanan , Y. Tamura , J. Umehata

We exploit the gravitational potential of massive cluster lenses to probe the emission line properties of six z=1 galaxies which appear as highly magnified luminous arcs. Using the GMOS integral field spectrograph together with detailed…

Astrophysics · Physics 2009-11-11 M. Swinbank , R. Bower , G. P. Smith , Ian Smail , J. -P. Kneib , R. Ellis , D. Stark , A. Bunker

The 4.9 GHz Micro-Arcsecond Scintillation-Induced Variability (MASIV) Survey detected a drop in Interstellar Scintillation (ISS) for sources at redshifts z > 2, indicating an apparent increase in angular diameter or a decrease in flux…

Cosmology and Nongalactic Astrophysics · Physics 2011-09-09 J. Y Koay , J. -P. Macquart , B. J. Rickett , H. E. Bignall , J. E. J. Lovell , C. Reynolds , D. L. Jauncey , T. Pursimo , L. Kedziora-Chudczer , R. Ojha

We use the recent releases of sensitive VLA/LOFAR large-area surveys at 340 MHz and 54 MHz, in conjunction with the 1.4 GHz NVSS, to accurately determine the `spectral index - flux density relation' ($\alpha$ - S) for extragalactic radio…

Astrophysics of Galaxies · Physics 2023-07-05 Pratik Dabhade , Gopal-Krishna

We estimate the two-point correlation function in redshift space of the recently compiled HIPASS neutral hydrogen (HI) sources catalogue, which if modeled as a power law, $\xi(r)=(r_{0}/r)^{\gamma}$, the best-fitting parameters for the HI…

Astrophysics · Physics 2008-11-26 S. Basilakos , M. Plionis , K. Kovac , N. Voglis

From 1979--1996 the Green Bank Interferometer was used by the Naval Research Laboratory to monitor the flux density from 146 compact radio sources at frequencies near 2 and 8 GHz. We filter the ``light curves'' to separate intrinsic…

Astrophysics · Physics 2009-11-11 B. Rickett , T. J. W. Lazio , F. D. Ghigo

On the galactic scale the universe is inhomogeneous and redshift $z$ is occasionally less than zero. A scalar potential model (SPM) that links the galaxy scale $z$ to the cosmological scale $z$ of the Hubble Law is postulated. Several…

Astrophysics · Physics 2009-07-01 John C. Hodge

The orthonormal set of Spherical Harmonics provides a natural way of expanding whole sky redshift and peculiar velocity surveys.

Astrophysics · Physics 2009-09-25 Ofer Lahav