IC10XMMCXO ivo://nasa.heasarc/ic10xmmcxo NASA/GSFC HEASARC Wang et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains some of the results from an X-ray study of our nearest starburst galaxy IC 10, based on XMM-Newton and Chandra observations. It contains a list of 73 XMM-Newton and 28 Chandra detections of point-like X-ray sources in the field of this galaxy; a substantial fraction of them are likely to be stellar objects in the Milky Way due to the low Galactic latitude location of IC 10. The brightest source in the IC 10 field, X-1, has a mean 0.3-8.0 keV luminosity of ~1.2E38 erg s<sup>-1</sup> and shows a large variation by a factor of up to ~6 on timescales of ~10<sup>4</sup> s during the XMM-Newton observation. The XMM-Newton observations were taken on 2003 July 3 with a total exposure time of ~45 ks for the EPIC-MOS cameras and ~42 ks for the European Photon Imaging Camera (EPIC) PN camera. The authors use only the data from the PN camera (with a thin optical blocking filter) because of its high sensitivity to soft X-rays in the study of diffuse emission and include the data from the MOS cameras in the analysis of X-1. The Chandra observation, taken on 2003 March 12 with an exposure of 29 ks and already described by Bauer and Brandt (2004, ApJ, 601, 67), was reprocessed by the authors using the then-latest CIAO software (version 3.2.1) and calibration database (version 3.0.0). The authors used the Two-Micron All Sky Survey (2MASS) All-Sky Catalog of Point Sources (Cutri et al. 2003 <a href="https://cdsarc.cds.unistra.fr/ftp/cats/II/246">CDS Catalog II/246</a>) to search for potential counterparts. They cross-correlated the spatial positions of the objects in this catalog with their X-ray source positions, using a matching radius of 4 arcsec for XMM-Newton PN sources and 2 arcsec for Chandra ACIS sources. The radius was chosen to be greater than the 1-sigma statistical position uncertainty of almost all the sources.In no case is there a match with multiple 2MASS objects. The 3-sigma limiting sensitivities of the 2MASS Catalog are 17.1, 16.4 and 15.3 mag in the three bands, J, H, and K<sub>S</sub>, respectively. This table was created by the HEASARC in October 2011 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/362/1065">CDS Catalog J/MNRAS/362/1065</a> files table1.dat, table2.dat and table3.dat. This is a service provided by NASA HEASARC . 2005MNRAS.362.1065W https://heasarc.gsfc.nasa.gov/W3Browse/all/ic10xmmcxo.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=ic10xmmcxo& GET text/xml 180 99999 true 4.87220833 59.07247222 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=ic10xmmcxo GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_ic10xmmcxo&Action=More+Options&Action=Parameter+Search&ConeAdd=1 XMM-NEWTON 0.0166666666666667 X-ray public ic10xmmcxo IC 10 XMM-Newton and Chandra X-Ray Point Source Catalog name Source Designation (XMMU/CXOU JHHMMSS.s+DDMMSS) meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable count_rate On-Axis Source Broad-Band Count Rate ct/s phot.count;em.X-ray double nullable count_rate_error RMS Uncertainty on Broad-Band Count Rate ct/s stat.error;phot.count;em.X-ray double nullable hardness_ratio Hardness Ratio, (H-S2)/(H+S2) phot.count;arith.ratio;em.X-ray double nullable hardness_ratio_error RMS Uncertainty for Hardness Ratio stat.error;phot.count;arith.ratio;em.X-ray double nullable twomass_name 2MASS Designation (2MASS JHHMMSSss+DDMMSSs) meta.id.cross char nullable jmag 2MASS J Magnitude mag phot.mag;em.IR.J double nullable source_identifier Unique Source Identifier meta.id;src char nullable error_radius Position Uncertainty arcsec stat.error;pos double nullable notes Notes meta.note char nullable ks_mag 2MASS Ks Magnitude mag phot.mag;em.IR.K double nullable alt_name Alternative Catalog-Based Source Designation meta.id char nullable hardness_ratio_1_error RMS Uncertainty for HR1 stat.error;phot.count;arith.ratio;em.X-ray double nullable lii Galactic Longitude degree pos.galactic.lon double nullable hmag 2MASS H Magnitude mag phot.mag;em.IR.H double nullable hardness_ratio_1 Hardness Ratio 1, (S2-S1)/S phot.count;arith.ratio;em.X-ray double nullable bii Galactic Latitude degree pos.galactic.lat double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable off_set Position Offset Between X and 2MASS Sources arcsec pos.angDistance;em.X-ray;em.IR double nullable