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We present the results of ROSAT All-Sky Survey observations of Seyfert and IR-luminous galaxies from the Extended 12 Micron Galaxy Sample and the optically-selected CfA Sample. Roughly half of the Seyferts (mostly Seyfert 1s) have been…

Astrophysics · Physics 2009-10-28 Brian Rush , Matthew A. Malkan , Henner H. Fink , Wolfgang Voges

Aims: We present a wide-field multi-color survey of a homogeneous sample of eleven clusters of galaxies for which we measure total masses and mass distributions from weak lensing. Methods: The eleven clusters in our sample are all X-ray…

Astrophysics · Physics 2009-11-13 S. Bardeau , G. Soucail , J. P. Kneib , O. Czoske , H. Ebeling , P. Hudelot , I. Smail , G. P. Smith

One of the primary outstanding questions in extragalactic astronomy is the formation and early evolution of the supermassive black holes that are seen in nearly every massive galaxy. Low metallicity dwarf galaxies may offer the most…

Astrophysics of Galaxies · Physics 2023-10-05 Jenna M. Cann , Kimberly A. Weaver , Ryan W. Pfeifle , Nathan J. Secrest , Shobita Satyapal , Mario Gliozzi

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 a new catalogue of high mass X-ray binaries (HMXBs) in the Galaxy that we call the Galactic High Mass X-ray Binary Catalogue (XRBcats), which improves upon the most recent of such catalogues. We include new HMXBs discovered since…

High Energy Astrophysical Phenomena · Physics 2023-09-25 Marvin Neumann , Artur Avakyan , Victor Doroshenko , Andrea Santangelo

Surface brightness fluctuation (SBF) magnitudes are a powerful standard candle to measure distances to semi-resolved galaxies in the local universe, a majority of which are dwarf galaxies that have often bluer colors than bright early-type…

Astrophysics of Galaxies · Physics 2022-01-05 Yoo Jung Kim , Myung Gyoon Lee

We use highly spectroscopically complete deep and wide-area Chandra surveys to determine the cosmic evolution of hard X-ray-selected AGNs. We determine hard X-ray luminosity functions (HXLFs) for all spectral types and for broad-line AGNs…

Astrophysics · Physics 2008-11-26 A. J. Barger , L. L. Cowie , R. F. Mushotzky , Y. Yang , W. -H. Wang , A. T. Steffen , P. Capak

The Chandra X-ray Observatory has now discovered nearly 10,000 X-ray point sources in the 2 x 0.8 degree region around the Galactic Center (Muno 2009). The sources are likely to be a population of accreting binaries in the Galactic Center,…

Galactic Globular Clusters (GCs) containing bright X sources (L_x > 10^{36} erg/s), commonly associated with Low Mass X-Ray Binaries (LMXBs), are found to be significantly denser and more metal-rich than normal non-X-ray clusters both in…

Astrophysics · Physics 2009-10-22 M. Bellazzini , A. Pasquali , L. Federici , F. R. Ferraro , F. Fusi Pecci

We present results of the study of persistent high mass X-ray binaries (HMXBs) in the Milky Way, obtained from the deep INTEGRAL Galactic plane survey. This survey provides us a new insight into the population of high mass X-ray binaries…

High Energy Astrophysical Phenomena · Physics 2015-06-12 A. A. Lutovinov , M. G. Revnivtsev , S. S. Tsygankov , R. A. Krivonos

We present a catalogue of X-ray luminosities for 401 early-type galaxies, of which 136 are based on newly analysed ROSAT PSPC pointed observations. The remaining luminosities are taken from the literature and converted to a common energy…

Astrophysics · Physics 2009-07-09 Ewan O'Sullivan , Duncan A. Forbes , Trevor J. Ponman

We study populations of soft and super-soft X-ray sources in nearby galaxies of various morphological types with the special emphasis on characterizing populations of stable nuclear burning accreting WDs. Analysing the content of Chandra…

High Energy Astrophysical Phenomena · Physics 2021-02-17 I. Galiullin , M. Gilfanov

X-ray surveys contain sizable numbers of star forming galaxies, beyond the AGN which usually make the majority of detections. Many methods to separate the two populations are used in the literature, based on X-ray and multiwavelength…

Cosmology and Nongalactic Astrophysics · Physics 2012-05-28 P. Ranalli , A. Comastri , G. Zamorani , N. Cappelluti , F. Civano , I. Georgantopoulos , R. Gilli , E. Schinnerer , V. Smolcic , C. Vignali

We use the largest, most uniform, and most spectroscopically complete to faint X-ray flux limits Chandra sample to date to construct hard 2-8 keV rest-frame X-ray luminosity functions (HXLFs) of spectroscopically identified active galactic…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-11 B. Yencho , A. J. Barger , L. Trouille , L. M. Winter

We present a study of X-ray normal galaxies using data from the first all-sky scan of the eROSITA X-ray survey. eRASS1 provides the first unbiased X-ray census of normal galaxies allowing us to study the X-ray emission from XRBs and the hot…

Strongly star-forming galaxies are prolific in producing the young and most massive star clusters (YMCs) still forming today. This work investigates the star cluster luminosity functions (CLFs, dN/dL ~ L^{-alpha}) of 26 starburst and…

Astrophysics of Galaxies · Physics 2022-05-04 Z. Randriamanakoto , P. Vaisanen , P. Ranaivomanana , R. Ramphul , E. Kankare , S. Mattila , S. D. Ryder , J. Kotilainen

Identifying X-ray binary (XRB) candidates in nearby galaxies requires distinguishing them from possible contaminants including foreground stars and background active galactic nuclei. This work investigates the use of supervised machine…

Astrophysics of Galaxies · Physics 2020-05-11 R. M. Arnason , P. Barmby , N. Vulic

We present the results of a Chandra/HST study of the point sources of the NGC 4472. We identify 144 X-ray sources, 72 with HST matches. The optical data show 1102 sources, 829 with globular cluster colors. Thirty matches are found - likely…

Astrophysics · Physics 2009-11-07 Thomas J. Maccarone , Arunav Kundu , Stephen E. Zepf

X-ray studies of normal late-type galaxies have shown that non-nuclear X-ray emission is typically dominated by X-ray binaries, and provides a useful measure of star formation activity. We have modeled the X-ray evolution of late-type…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Zhao-Yu Zuo , Xiang-Dong Li

The INTEGRAL archive developed at INAF-IASF Milano with the available public observations from late 2002 to 2016 is investigated to extract the X-ray properties of 58 High Mass X-ray Binaries (HMXBs). This sample consists of sources hosting…

High Energy Astrophysical Phenomena · Physics 2020-02-19 Lara Sidoli , Adamantia Paizis
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