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R.A./DEC |
| Coordinates (2000). Depending on the selection the X-ray coordinates
of the RASS-BSC are used or the optical coordinates of the HQS |
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X-opt distance |
| Distance between X-ray and optical position in arcseconds. |
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B |
| Optical magnitude B. No entry means no B magnitude available. |
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ID-Code |
| ID Code |
object category |
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| 1* |
active galactic nucleus ("AGN") including Sy, QSO and BL Lac |
| 2* |
galaxy |
| 3* |
galaxy cluster |
| 5* |
M Star |
| 6* |
white dwarf |
| 7*1 |
K Star |
| 7*2 |
F-G star |
| 7*3 |
cataclysmic variable |
| 7*4 |
bright star |
| 8 |
no (unambiguous) identification, overlaps |
| 803 |
no spectrum available for likely counterpart |
| 0 |
no objects visible within 40" around the X-ray position ("blank field") |
The identification reliability flag * can take values 0="high probable", 1="probable", 2="possible". |
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spectral classification |
| class |
description |
|
| W-DWARF |
white dwarf, blue continuum, broad absorbtion lines |
| CV |
cataclysmic variable, exhibits Balmer emission |
| STAR-BA |
Balmer line absorbtion |
| STAR-FG |
G-band, Ca H&K absorbtion |
| STAR-K |
G-band, Ca H&K absorbtion, redder continuum than STAR-FG |
| STAR-M |
continuum very reed, TiO and CaI 4226Å |
| GALAXY |
red continuum, no emmission lines, extended direct image |
| BLUE-GAL. |
continuum blue, extended direct image |
| AGN |
continuum blue, emission lines |
| QSO |
continuum very blue, point-like image, emission lines |
| EBL-WK |
continuum very blue, faint point-like image |
| BLUE-WK |
blue continuum, faint point-like image |
| RED-WK |
red continuum, faint point-like |
| UNIDENT |
none of the above defined class assignable |
| OVERLAP |
no classification possible due to overlapping spectra |
| SATURATE |
no classification possible due to saturated spectrum |
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count-rate |
| RASS count rate in counts per second |
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hardness ratio 1 |
| Hardness ratio 1 |
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hardness ratio 2 |
| Hardness ratio 2 |
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extension |
| source X-ray extension in arcseconds |
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extension likelihood |
| source extension likelihood |
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position accuracy |
| position error radius given by the BSC |
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