English
Related papers

Related papers: The Ionization State of Sodium in Galactic Winds

200 papers

We present a 23 ks XMM-Newton observation of the ULIRG Mrk 273. The hard X-ray spectrum can be modeled by a highly absorbed power law plus an Fe Kalpha emission line. The iron line is broad, suggesting possible superposition of a neutral…

Astrophysics · Physics 2009-11-11 I. Balestra , Th. Boller , L. Gallo , D. Lutz , S. Hess

We detect ionized gas characteristics indicative of winds in three disk-dominated galaxies that are members of a super-group at z=0.37 that will merge to form a Coma-mass cluster. All three galaxies are IR-luminous (L_IR > 4 x 10^{10}…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 E. Freeland , K-V. Tran , T. Irwin , L. Giordano , A. Saintonge , A. Gonzalez , D. Zaritsky , D. Just

We present high spatial resolution (FWHM 0.3-0.8") BIHK'-band imaging of a sample of ultraluminous infrared galaxies with "cool" mid-infrared colors (f25/f60 < 0.2) which select against AGN-like systems and which form a complementary sample…

Astrophysics · Physics 2009-10-31 J. A. Surace , D. B. Sanders , A. S. Evans

We present results from Chandra observations of 14 ultraluminous infrared galaxies (ULIRGs; log(L_IR/L_Sun) >= 12) with redshifts between 0.04 and 0.16. The goals of the observations were to investigate any correlation between infrared…

Astrophysics · Physics 2009-11-13 Stacy H. Teng , A. S. Wilson , S. Veilleux , A. J. Young , D. B. Sanders , N. M. Nagar

We report the results of a systematic near-infrared spectroscopic survey using the Subaru, VLT and Keck Telescopes of a sample of high redshift Ultra-luminous Infrared Galaxies (ULIRGs) mainly composed of submillimeter-selected galaxies.…

We present an atlas of a sample of local (U)LIRGs covering the luminosity range log(L_IR/L_sun)=11.1-12.4. The atlas is based on near-infrared H and K-band VLT-SINFONI IFS, and presents the ionised, partially ionised, and warm molecular gas…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-24 J. Piqueras López , L. Colina , S. Arribas , A. Alonso-Herrero , A. G. Bedregal

We present results from a Chandra study of ultraluminous X-ray sources (ULXs) in a sample of 17 nearby (D_L<60 Mpc) luminous infrared galaxies (LIRGs), selected to have star formation rates (SFRs) in excess of 7 M_sun yr^-1 and low…

High Energy Astrophysical Phenomena · Physics 2015-06-23 W. Luangtip , T. P. Roberts , S. Mineo , B. D. Lehmer , D. M. Alexander , F. E. Jackson , A. D. Goulding , J. L. Fischer

We present an analysis of the MgII 2796, 2803 and FeII 2586, 2600 absorption line profiles in coadded spectra of 468 galaxies at 0.7 < z < 1.5. The galaxy sample, drawn from the Team Keck Treasury Redshift Survey of the GOODS-N field, has a…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Kate H. R. Rubin , Benjamin J. Weiner , David C. Koo , Crystal L. Martin , J. Xavier Prochaska , Alison L. Coil , Jeffrey A. Newman

The ultraviolet (UV) continuum slope ($\beta~$where$~f_\lambda\propto\lambda^\beta$) of galaxies is sensitive to a variety of properties, from the metallicity and age of the stellar population to dust attenuation throughout the galaxy.…

Astrophysics of Galaxies · Physics 2022-12-28 Michael W. Topping , Daniel P. Stark , Ryan Endsley , Adele Plat , Lily Whitler , Zuyi Chen , Stéphane Charlot

We identify eight z>1 radio sources undetected at 850um but robustly detected at 70um, confirming that they represent ultraluminous infrared galaxies (ULIRGs) with hotter dust temperatures (T_dust=52+-10 K) than Submillimetre Galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 C. M. Casey , S. C. Chapman , R. J. Beswick , A. D. Biggs , A. W. Blain , L. J. Hainline , R. J. Ivison , T. Muxlow , I. Smail

We present a study of the continuum polarization over the 400--600 nm range of 19 Type Ia SNe obtained with FORS at the VLT. We separate them in those that show Na I D lines at the velocity of their hosts and those that do not. Continuum…

High Energy Astrophysical Phenomena · Physics 2017-02-22 P. Zelaya , A. Clocchiatti , D. Baade , P. Höflich , J. Maund , F. Patat , J. R. Quinn , E. Reilly , L. Wang , J. C. Wheele , F. Förster , S. González-Gaitán

X-ray absorption line spectroscopy has recently shown evidence for previously unknown Ultra-fast Outflows (UFOs) in radio-quiet AGNs. In the previous paper of this series we defined UFOs as those absorbers with an outflow velocity higher…

High Energy Astrophysical Phenomena · Physics 2015-05-30 F. Tombesi , M. Cappi , J. N. Reeves , G. G. C. Palumbo , V. Braito , M. Dadina

Rest-frame far-ultraviolet (FUV) observations from JWST are revolutionizing our understanding of the high-z galaxies that drove reionization and the mechanisms by which they accomplished it. To fully interpret these observations, we must be…

Spectra obtained with the Hubble Space Telescope GHRS are combined with high-resolution optical spectra and UV spectra from Copernicus to study the abundances and physical conditions in the diffuse interstellar clouds seen along the line of…

Astrophysics · Physics 2008-11-26 D. E. Welty , L. M. Hobbs , J. T. Lauroesch , D. C. Morton , L. Spitzer , D. G. York

The warm absorbers observed in more than half of all nearby active galactic nuclei (AGN) are tracers of ionized outflows located at parsec scale distances from the central engine. If the smallest inferred ionization parameters correspond to…

Active galactic nuclei (AGN) drive fast winds in the interstellar medium of their host galaxies. It is commonly assumed that the high ambient densities and intense radiation fields in galactic nuclei imply short cooling times, thus making…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 C. -A. Faucher-Giguere , E. Quataert

XMM-Newton observations of 10 ULIRGs are reported. The aim is to investigate in hard X-rays a complete ULIRG sample selected from the bright IRAS 60$\mu$m catalogue. All sources are detected in X-rays, 5 of which for the first time. These…

We report the discovery of blue shifted (delta(V) > 200 km/s) mid-infrared [NeIII] and/or [NeV] emission in 25 out of 82 ULIRGs (30% of our sample). The incidence of blue shifted [NeV] emission is even higher (59%) among the sources with a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 H. W. W. Spoon , J. Holt

We study the kinematic properties of the ambient ionized ISM and ionized gas outflows in a large and representative sample of local luminous and ultraluminous infrared galaxies (U/LIRGs) (58 systems, 75 galaxies), on the basis of integral…

Astrophysics of Galaxies · Physics 2014-09-05 Santiago Arribas , Luis Colina , Enrica Bellocchi , Roberto Maiolino , Montserrat Villar-Martin

More than half of all low-redshift AGN exhibit UV and X-ray absorption by highly ionized gas. The observed UV and X-ray absorption lines are almost always blue-shifted at velocities of hundreds of km/s, indicating that the absorbing gas is…

Astrophysics · Physics 2009-11-10 Gerard A. Kriss
‹ Prev 1 3 4 5 6 7 10 Next ›