EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 641 (September 2020) A&A, 641 (2020) A137 Full HTML
Free Access

Table A.1.

Overview of the columns in 4XMM-DR9s.

No Column name Units Format Description
1 IAUNAME String IAU name of the source
2 SRCID Long Identifier of the source
3o OBS_ID String XMM-Newton observation identification (observation-specific)
4s N_OBS Integer Number of observations involved in the stack (stack-specific)
5s N_CONTRIB Integer Number of observations in which the source was fitted (stack-specific)
6 N_EXP Integer Number of exposures for which the source was fitted
7 RA deg Double Right ascension (J2000)
8 Dec deg Double Declination (J2000)
9 RADEC_ERR arcsec Float Square root of squared sum of 1σ errors in RA and Dec
10 LII deg Double Galactic longitude
11 BII deg Double Galactic latitude
12 X_IMA pixel Float X image coordinate
13 X_IMA_ERR pixel Float 1σ error on X_IMA
14 Y_IMA pixel Float Y image coordinate
15 Y_IMA_ERR pixel Float 1σ error on Y_IMA
16 DIST_NN arcsec Float Distance to the nearest neighbouring detection
17 N_BLEND Integer Number of simultaneously fitted sources
18 IAUNAME_4XMMDR9 String IAU name assigned to the nearest unique 4XMM-DR9 source
19 SRCID_4XMMDR9 Long Source identifier of the nearest unique source in 4XMM-DR9
20o DETID_4XMMDR9 Long Identifier of the associated 4XMM-DR9 detection in this OBS_ID (observation-specific)
21 RA_4XMMDR9 deg Double Mean right ascension (SC_)RA of the associated 4XMM-DR9 source/detection
22 Dec_4XMMDR9 deg Double Mean declination (SC_)Dec of the associated 4XMM-DR9 source/detection
23 POSERR_4XMMDR9 arcsec Float Statistical and systematic 4XMM-DR9 position error
24 DIST_4XMMDR9 arcsec Double Distance to the associated 4XMM-DR9 source
25s NDETECT_4XMMDR9 Short Number of DR9 detections of the associated 4XMM-DR9 source
26 EP_FLUX erg cm−2 s−1 Float All-EPIC flux
27 EP_FLUX_ERR erg cm−2 s−1 Float 1σ error on EP_FLUX
28..37 EP_n_FLUX erg cm−2 s−1 Float Total flux in energy band n
EP_n_FLUX_ERR erg cm−2 s−1 Float 1σ error on EP_n_FLUX
38..73 II_FLUX erg cm−2 s−1 Float Total EPIC pn, MOS1, MOS2 flux
II_FLUX_ERR erg cm−2 s−1 Float 1σ error on II_FLUX
II_n_FLUX erg cm−2 s−1 Float EPIC pn, MOS1, MOS flux in energy band n
II_n_FLUX_ERR erg cm−2 s−1 Float 1σ error on II_n_FLUX
74 EP_RATE counts s−1 Float All-EPIC count rate
75 EP_RATE_ERR counts s−1 Float 1σ error on EP_RATE
76..111 II_RATE counts s−1 Float Total EPIC pn, MOS1, MOS2 count rate
II_RATE_ERR counts s−1 Float 1σ error on II_RATE
II_n_RATE counts s−1 Float EPIC pn, MOS1, MOS2 count rate in energy band n
II_n_RATE_ERR counts s−1 Float 1σ error on II_n_RATE
112 EP_CTS counts Float All-EPIC number of counts
113 EP_CTS_ERR counts Float 1σ error on EP_CTS
114..119 II_CTS counts Float EPIC pn, MOS1, MOS2 number of counts
II_CTS_ERR counts Float 1σ error on II_CTS
120 EP_DET_ML Float All-EPIC equivalent maximum detection likelihood
121..138 II_DET_ML Float EPIC pn, MOS1, MOS2 equivalent maximum detection likelihood
II_n_DET_ML Float EPIC pn, MOS1, MOS2 detection likelihood in energy band n
139 EXTENT arcsec Float Extent radius
140 EXTENT_ERR arcsec Float 1σ error on EXTENT
141 EXTENT_ML Float Likelihood of the detection being extended
142..149 EP_HRi Float All-EPIC hardness ratio of energy bands i and i + 1
EP_HRi_ERR Float 1σ error on EP_HRi
150..173 II_HRi Float EPIC pn, MOS1, MOS2 hardness ratio of energy bands i and i + 1
II_HRi_ERR Float 1σ error on II_HRi
174..191 II_EXP s Float PSF-weighted exposure in EPIC pn, MOS1, MOS2
II_n_EXP s Float PSF-weighted exposure in energy band n of EPIC pn, MOS1, MOS2
192..209 II_BG counts pixel−1 Float EPIC pn, MOS1, MOS2 background map at the source position
II_n_BG counts pixel−1 Float EPIC pn, MOS1, MOS2 background map in energy band n
210 EP_ONTIME s Float Total good exposure time all-EPIC
211..213 II_ONTIME s Float Total good exposure time in EPIC pn, MOS1, MOS2
214..216 II_PILEUP Float Estimate of the pile-up level in EPIC pn, MOS1, MOS2
217..219 II_MASKFRAC Float PSF-weighted detector coverage in EPIC pn, MOS1, MOS2
220 DIST_REF arcmin Float Distance to the reference coordinates of the field
221o EP_OFFAX arcmin Float Off-axis angle between source position and aim point all-EPIC (observation-specific)
222..224o II_OFFAX arcmin Float Off-axis angle between source position and aim point in EPIC pn, MOS1, MOS2 (observation-specific)
225..239o II_n_VIG Float EPIC pn, MOS1, MOS2 vignetting factor in energy band n for the observation (observation-specific)
240 OVERLAP Boolean Flag marking repeatedly observed sources
241 STACK_FLAG Short Integer representation of the stack detection flags
242 EP_FLAG String All-EPIC detection flags
243..245 II_FLAG String EPIC pn, MOS1, MOS2 detection flags
246 VAR_CHI2 Float Reduced χ2 of EPIC inter-observation variability
247..251 VAR_CHI2_n Float Reduced χ2 of EPIC band n inter-observation variability
252 VAR_PROB Double Probability that VAR_CHI2 is consistent with constant EPIC flux
253..257 VAR_PROB_n Double Probability that VAR_CHI2_n is consistent with constant band n flux
258 FRATIO Float EPIC flux ratio
259 FRATIO_ERR Float 1σ error on FRATIO
260..269 FRATIO_n Float EPIC band n flux ratio
FRATIO_n_ERR Float 1σ error on FRATIO_n
270 FLUXVAR Float Largest EPIC flux difference in terms of σ
271..275 FLUXVAR_n Float Largest EPIC band n flux difference in terms of σ
276 CHI2PROB_4XMMDR9 Double Probability of the nearest unique 4XMM-DR9 source to be consistent with constant flux
277 FVAR_4XMMDR9 Double Fractional intra-observation excess variance of the nearest unique 4XMM-DR9 source
278 FVARERR_4XMMDR9 Float 1σ error on FVAR_4XMMDR9
279 VAR_FLAG_4XMMDR9 Boolean Intra-observation variability flag of the associated 4XMM-DR9 source
280 SUM_FLAG_4XMMDR9 Short Summary quality flag of the associated 4XMM-DR9 source/detection
281s SUM_FLAG_MIN_4XMMDR9 Short Best quality flag of the detections of the nearest unique 4XMM-DR9 source (stack-specific)
282 MJD_FIRST days Double Modified Julian Date JD-2400000.5 of the observation start
283 MJD_LAST days Double Modified Julian Date JD-2400000.5 of the observation end
284o REVOLUT orbit Short XMM-Newton revolution number (observation-specific)
285o PA_PNT deg Float Mean position angle of the spacecraft (observation-specific)
286o OBS_CLASS Short Observation quality from 4XMM-DR9 screening (observation-specific)
287..289o II_SUBMODE String EPIC pn, MOS1, MOS2 submode (observation-specific)
290..292o II_FILTER String EPIC pn, MOS1, MOS2 filter (observation-specific)
293o ASTCORR Boolean Flag: observation was astrometrically corrected (observation-specific)
294o CC_RAOFFSET arcsec Double catcorr shift of the right ascension (observation-specific)
295o CC_RAOFFERR arcsec Double 1σ error on CC_RAOFFSET (observation-specific)
296o CC_DEOFFSET arcsec Double catcorr shift of the declination (observation-specific)
297o CC_DEOFFERR arcsec Double 1σ error on CC_DEOFFSET (observation-specific)
298o CC_ROT_CORR deg Double catcorr shift of the position angle in the field (observation-specific)
299o CC_ROT_ERR deg Double 1σ error on CC_ROT_CORR (observation-specific)
300o CC_POFFSET arcsec Double catcorr total position shift of the field (observation-specific)
301o CC_POFFERR arcsec Double 1σ error on CC_POFFSET (observation-specific)
302o CC_REFCAT String catcorr reference catalogue (observation-specific)
303o CC_NMATCHES Short catcorr number of usable matches with the reference catalogue
304..306o II_BKG_CRAREA cts s−1 arcsec−2 Double EPIC pn, MOS1, MOS2 background rate per area (observation-specific)
307..309o II_BKG_CPROB Double EPIC pn, MOS1, MOS2 Cauchy probability derived from II_BKG_CRAREA (observation-specific)
310 URL_4XMMDR9 String Web-page URL of the nearest unique 4XMM-DR9 source

Notes. II denotes one of the EPIC instruments, abbreviated by PN, M1, M2. Energy band numbers n run from one to five, i from one to four. If a source parameter is defined for part of the rows only, it is indicated in the description and by a superscript “s” to the column number for stack-specific and “o” for observation-specific information.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.