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The Chandra Carina Complex Project (CCCP) provides a sensitive X-ray survey of a nearby starburst region over >1 square degree in extent. Thousands of faint X-ray sources are found, many concentrated into rich young stellar clusters.…

Solar and Stellar Astrophysics · Physics 2015-05-27 Patrick S. Broos , Konstantin V. Getman , Matthew S. Povich , Leisa K. Townsley , Eric D. Feigelson , Gordon P. Garmire

[Abridged] The central field of the Andromeda galaxy (M 31) has been monitored, using the Chandra HRC-I detector (about 0.1-10 keV energy range) from 2006 to 2012 with the main aim to detect X-rays from optical novae. We present a…

High Energy Astrophysical Phenomena · Physics 2015-06-15 F. Hofmann , W. Pietsch , M. Henze , F. Haberl , R. Sturm , M. Della Valle , D. H. Hartmann , D. Hatzidimitriou

We present the Brera Multi-scale Wavelet Chandra (BMW-Chandra) source catalogue drawn from essentially all Chandra ACIS-I pointed observations with an exposure time in excess of 10ks public as of March 2003 (136 observations). Using the…

High Energy Astrophysical Phenomena · Physics 2009-04-14 P. Romano , S. Campana , R. P. Mignani , A. Moretti , M. R. Panzera , G. Tagliaferri , M. Mottini

A deep (98.2 ks) Chandra Cycle-1 observation has revealed a wealth of discrete X-ray sources as well as diffuse emission in the nearby face-on spiral galaxy M101. From this rich dataset we have created a catalog of the 110 sources from the…

Astrophysics · Physics 2009-11-06 W. D. Pence , S. L. Snowden , K. Mukai , K. D. Kuntz

We present an analysis of the X-ray point source populations in 182 Chandra images of galaxy clusters at z>0.1 with exposure time >10 ksec, as well as 44 non-cluster fields. Analysis of the number and flux of these sources, using a detailed…

Astrophysics of Galaxies · Physics 2010-04-29 R. Gilmour , P. Best , O. Almaini

We present comprehensive X-ray point source catalogs of NGC~55, NGC~2403, and NGC~4214 as part of the Chandra Local Volume Survey. The combined archival observations have effective exposure times of 56.5 ks, 190 ks, and 79 ks for NGC~55,…

High Energy Astrophysical Phenomena · Physics 2015-09-16 B. Binder , B. F. Williams , M. Eracleous , P. P. Plucinsky , T. J. Gaetz , S. F. Anderson , E. D. Skillman , J. J. Dalcanton , A. K. H. Kong , D. R. Weisz

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,…

We present an overview of the Chandra ACIS Survey of M33 (ChASeM33): A Deep Survey of the Nearest Face-on Spiral Galaxy. The 1.4 Ms survey covers the galaxy out to $R \approx 18\arcmin (\approx 4$ kpc). These data provide the most…

The Chandra Cygnus OB2 Legacy Survey is a wide and deep X-ray survey of the nearby and massive Cygnus OB2 association. The survey has detected ~8,000 X-ray sources, the majority of which are pre-main sequence X-ray emitting young stars in…

Solar and Stellar Astrophysics · Physics 2015-11-13 Nicholas J. Wright , Jeremy J. Drake , Mario G. Guarcello , Vinay L. Kashyap , Andreas Zezas

We present the X-ray spectral analysis of the 390 brightest extragalactic sources in the Chandra-COSMOS catalog, showing at least 70 net counts in the 0.5-7 keV band. This sample has a 100% completeness in optical-IR identification, with…

We report the discovery of eight X-ray sources with periodic variability in 487 ks of observations of the Galactic center with Chandra. The sources are identified from a sample of 285 objects detected with 100-4200 net counts. Their periods…

Astrophysics · Physics 2009-11-10 M. P. Muno , F. K. Baganoff , M. W. Bautz , W. N. Brandt , G. P. Garmire , G. R. Ricker , ;

Observational studies of cluster evolution over moderate redshift ranges (to z ~ 1) are a powerful tool for constraining cosmological parameters, yet a comprehensive knowledge of the properties of these clusters has been hitherto…

Astrophysics · Physics 2007-05-23 Amalia Hicks , Erica Ellingson , Mark Bautz , Howard Yee , Mike Gladders , Gordon Garmire

Sources generating most of the X-ray background (XRB) are dispersed over a wide range of redshifts. Thus, statistical characteristics of the source distribution carry information on matter distribution on very large scales. We test the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 A. M. Soltan , M. J. Chodorowski

We present an enhanced version of the publicly-available Stripe 82X catalog (S82-XL), featuring a comprehensive set of 22,737 unique X-ray point sources identified with a significance $\gtrsim 4\sigma$. This catalog is four times larger…

We present results from the first near-IR imaging of the weak X-ray sources discovered in the Chandra/ACIS-I survey (Wang et al. 2002) towards the Galactic Centre (GC). These ~800 discrete sources, which contribute significantly to the GC…

A Chandra ACIS-S imaging observation of the nearby galaxy M81 (NGC 3031) reveals 9 luminous soft X-ray sources. The local environments, X-ray spectral properties, and X-ray light curves of the sources are presented and discussed in the…

Astrophysics · Physics 2009-11-07 Douglas Swartz , Kajal Ghosh , Valery Suleimanov , Allyn Tennant , Kinwah Wu

Using the Chandra ACIS-I instruments, we have carried out the deepest X-ray observation on a typical Galactic plane region at l 28.5 deg, where no discrete X-ray sources have been known previously. We have detected, as well as strong…

Astrophysics · Physics 2016-11-03 K. Ebisawa , A. Bamba , H. Kaneda , Y. Maeda , A. Paizis , G. Sato , S. Yamauchi

We present the X-ray source catalog for the 479 ks Chandra exposure of the SDSS J1030+0524 field, that is centered on a region that shows the best evidence to date of an overdensity around a z > 6 quasar, and also includes a galaxy…

We present an 82 ksec Chandra ACIS-I observation of a large-scale hierarchical complex, which consists of various clusters/groups of galaxies and low-surface brightness X-ray emission at z = 0.247. This high-resolution {\sl Chandra}…

Astrophysics · Physics 2009-11-10 Q. Daniel Wang , Frazer Owen , Michael Ledlow

The Chandra Multiwavength Plane (ChaMPlane) Survey of the galactic plane incorporates serendipitous sources from selected Chandra pointings in or near the galactic plane (b < 12deg; >20 ksec; lack of bright diffuse or point sources) to…