AVO 2003 Nov 17-18A T N A S C1

AVO 2003 Nov 17-18A T N A S C2 NB: in the presentation, those slides describing virtual observations in the project have a light blue background like this one -

AVO 2003 Nov 17-18A T N A S C3 NB: Those slides dedicated to real observations are just white like this one.

AVO 2003 Nov 17-18A T N A S C4

AVO 2003 Nov 17-18A T N A S C5 Project Description : = astro-ph/ In: The Physics of Cataclysmic Variables and Related Objects, ASP Conf. Ser., v. 261, eds. B. Gänsicke et al., p. 301, 2002 and In: New Directions for Close Binary Studies: The Royal Road to the Stars, Publ. of Canakkale University Astrophysics Research Center, vol. 3, p. 246, 2003

AVO 2003 Nov 17-18A T N A S C6

AVO 2003 Nov 17-18A T N A S C7

AVO 2003 Nov 17-18A T N A S C8 Projects flow chart: Stage I – selection of the ROSAT hard spectrum sources [VO]. Stage II – tentative radio IDs [VO]. Stage III – high resolution radio observations. Stage IV – optical IDs [VO];. galaxies to be discarded. Stage V – optical spectroscopy.

AVO 2003 Nov 17-18A T N A S C9 Stage I – selection in X-ray from the Bright ROSAT Sources Catalogue (1RXS) [ W. Voges et al., A&A 349, 389, 1999 ] The main selection criterium = = Motchs Strip : 0.90 HR HR [ C. Motch et al., A&A 132, 341, 1998 ] AND Sources in the Galactic Plane: |b| < 20 0

AVO 2003 Nov 17-18A T N A S C10 Stage II – tentative identifications in Radio Surveys: NVSS (VLA, D-configuration) 1.4 GHz 87GB/GB6/PMN (single dish) 4.8 GHz -----&---- radio variability checking [GB6] = { [1987GB] 2 + [1989GB] 2 } -2 (J. J. Condon, Private comm.)

AVO 2003 Nov 17-18A T N A S C11 Stage II: The X-ray-Radio cross-identifications have been made using CATS : a major collection of databases gathered and maintained by S. Trushkin et al. of the Special Astrophysical Observatory

AVO 2003 Nov 17-18A T N A S C12 SIMBAD : - no GB6 - no NVSS - no 2MASS

AVO 2003 Nov 17-18A T N A S C13 N E D : no multi-source query on the web; no 2MASS (only 2MASX)

AVO 2003 Nov 17-18A T N A S C14 C A T S : A complete collection of radio catalogs (191). Multi-source query. 2MASS & USNO Catalogs (not Charts/Images). VOTable format – to be implemented soon.

AVO 2003 Nov 17-18A T N A S C15 C A T S : SUMSS is already there (with a multiple position query, of course).

AVO 2003 Nov 17-18A T N A S C16 Stage III: Targeted radio observations (with a sub-arcsec coordinate precision): VLA A-configuration, 1.4 & 4.8 GHz ATCA 6-km configuration, 4.8 & 8.6 GHz

AVO 2003 Nov 17-18A T N A S C17 Stage IV: Radio-O ptical Identifications by the Digital Sky Surveys (DSS) [ obvious galaxies were discarded]

AVO 2003 Nov 17-18A T N A S C18 The best DSS access among many others is …

AVO 2003 Nov A Virtual Observatory of the US Naval Observatory, Flagstaff Station, Arizona: USNO PMM Observables: coordinates; charts; images; B, R, I magnitudes at two epochs, (hence variability) ; image analysis (star/galaxy); proper motions (!) of ~ 1,000,000,000 objects, release B1.0,

AVO 2003 Nov 17-18A T N A S C20 USNO PMM: flexible multiparameter interface; multidata output. The best, but not perfect: no multisource query.

AVO 2003 Nov 17-18A T N A S C21 Stage V: A moderate resolution optical spectroscopy of 60 candidates by AAT (4 m) Australia BTA (6 m) Russia VLT (8 m) Chile

AVO 2003 Nov 17-18A T N A S C22 Have been observed: ААТ : spectroscopy of 12 objects BТА : spectroscopy of 34 VLT : spectroscopy of 6 ======================================================== Total: objects to be observed Preliminary results: =============================================================== Stars 12 Featureless spectra 28 Sy1/Sy2/AGN 9 QSO 3 ===============================================================.

AVO 2003 Nov 17-18A T N A S C23. ======================================================== Preliminary results: =============================================================== Stars 12 Active stars =New Featureless spectra 28 if BL Lacs =New Sy1/Sy2/AGN 9 =New QSO 3 =New ===============================================================.

AVO 2003 Nov 17-18A T N A S C24 ======================================================== Preliminary results: =============================================================== Stars 12 Featureless spectra 28 BL Lacs ? Sy1/Sy2/AGN 9 QSO 3 ===============================================================.

AVO 2003 Nov 17-18A T N A S C25 Featureless objects 28 ? T hey all are star-like (i.e., not extended in optics), bright & hard X-ray emitters and radio sources [due to selection criteria].

AVO 2003 Nov 17-18A T N A S C26 Featureless objects 28 G alactic ? E xtragalactic ?

AVO 2003 Nov 17-18A T N A S C27 Featureless objects 28 If extragalactic – BL Lacs behind the GP.

AVO 2003 Nov 17-18A T N A S C28 Featureless objects 28 If Galactic –– they could be a NEW type of objects.

AVO 2003 Nov 17-18A T N A S C29 Featureless objects 28 EGRET sources in the Galactic plane?

AVO 2003 Nov 17-18A T N A S C30 No

AVO 2003 Nov 17-18A T N A S C31 Featureless objects 27 PROPER MOTION ?

AVO 2003 Nov 17-18A T N A S C32 Yes !

AVO 2003 Nov 17-18A T N A S C33 From USNO-PMM, six of 28 featureless objects have p.m. 3-σ, e.g. :

AVO 2003 Nov 17-18A T N A S C34 PROPER MOTION : MCQC J μRA = – ± arcsec/y μDEC = – ± arcsec/y

AVO 2003 Nov 17-18A T N A S C35 But we have to get a close look now