Testing single epoch bh mass estimators for agns
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Testing single-epoch BH mass estimators for AGNs. Rui She 2013-05-20. Virial BH Mass:. I. Reverberation Mapping (RM) II. Single-Epoch (SE) Methods. Hβ - correlation. Mg II - correlation. C IV - correlation.

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Testing single-epoch BH mass estimators for AGNs

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Testing single-epoch BH mass estimators for AGNs

Rui She

2013-05-20


Virial BH Mass:

I. Reverberation Mapping (RM)

II. Single-Epoch (SE) Methods


Hβ - correlation


Mg II - correlation


C IV - correlation


Mg II subset(having H)


Time Separation Cut( > 5.5R): H


Time Separation Cut( > 5.5R): Mg II


Time Separation Cut( > 5.5R): C IV


I. With narrow -line subtraction

C IV more test


II. With iron-template subtraction

C IV more test


III. With narrow -line and iron-template subtractions

C IV more test


Correlation: H


measureing ranges: H


measureing ranges: Mg II


measureing ranges: C IV


Conclusion

  • The virial assumption is found valid for H

  • MgII and CIV do not show a virial behavior.

  • Separation cuts do not change much.

  • MgII not showing virial behavior:

  • A luminosity effect ==> rule out

  • The BLRs of MgII and CIV may be different from that of H

  • For C IV, has better virial-like behavior with iron-template subtraction

  • varies a lot depending on measuring ranges.


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