A brief history of Amir Ahmad

Education

        I.C.S.E. [1995] : Don Bosco Academy , Patna, India

        A.I.S.S.C.E. [1997] : St. Michael's High School, Patna, India

        B.Sc. (Honours) Physics [1997 - 2000] : Science College, Patna University, Patna, India

        M.Sc. (Research) Astrophysics [2000 - 2001] : University of Hertfordshire, Hatfield, England (U.K)

        Ph.D. Astrophysics [2001 - 2004] : Queen's University Belfast, N. Ireland (U.K)


Employment

        Post Doctoral Research Assistant [2004 - 2007] : Armagh Observatory, N. Ireland (U.K)

Research Interests :

coming soon ...

Publications :

[ADS] An abundance analysis of a chemically peculiar B star - JL 87
A. Ahmad, N.T. Behara, C.S. Jeffery, T. Sahin, V.M. Woolf 2007, A&A, 465, 541

[ADS] Discovery of pulsation in a helium-rich subdwarf B star
A. Ahmad, C.S. Jeffery 2005, A&A, 437, L51

[ADS] Discovery of a spectroscopic binary comprising two hot helium-rich subdwarfs
A. Ahmad, C.S. Jeffery, A.W. Fullerton 2004, A&A, 418, 275

[ADS] Physical parameters for helium-rich subdwarf B stars from spectral energy distributions
A. Ahmad, C.S. Jeffery 2004, A&A, 413, 323

[ADS] Physical parameters for helium-rich subdwarf B stars from medium resolution spectroscopy
A. Ahmad, C.S. Jeffery 2003, A&A, 402, 335

Refereed Conference Proceedings:

[ADS] Spectral Analysis of Sdb-He Stars from the SDSS
A. Ahmad, C. Winter, C.S. Jeffery 2006, Baltic Astronomy, 15, pp. 159

[ADS] Chemical Abundances of Helium-Rich Subdwarf B Stars
A. Ahmad, C.S. Jeffery 2006, Baltic Astronomy, 15, pp. 139

[ADS] Hot Subdwarfs from Low-Dispersion Surveys -- Methods of Extraction and Automatic Analysis
C. Winter, C.S. Jeffery, A. Ahmad, D.R. Morgan 2006, Baltic Astronomy, 15, pp. 69

[ADS] The evolution of helium-rich subdwarf B stars
A. Ahmad, C.S. Jeffery 2004, in Extreme Horizontal Branch Stars and Related Objects, Ap&SS, ed. P.F.L. Maxted, 291, pp. 253

[ADS] Pulsation stability of helium-rich subdwarf B stars
A. Ahmad, C.S. Jeffery, J.-E. Solheim, R. Ostensen 2004, in Extreme Horizontal Branch Stars and Related Objects, Ap&SS, ed. P.F.L. Maxted, 291, pp. 435

Non-Refereed Conference Proceedings:

[ADS] Confirming the binary nature of PG1544+488 with FUSE
A. Ahmad, C.S. Jeffery, A.W. Fullerton 2005, in Astrophysics in the Far Ultraviolet, ASP Conf. Ser. Vol 348, eds. Sonneborn, Moos and Andersson, pp. 203

[ADS] Spectroscopic analyses of helium-rich subdwarf B stars
A. Ahmad, C.S. Jeffery 2005, in 14th European Workshop on White Dwarfs Objects, ASP Conf. Ser. Vol 334, eds. D. Koester and S. Moehler, pp. 291

[ADS] Are helium rich subdwarf B stars products of white dwarf mergers?
A. Ahmad, C.S. Jeffery, V.M. Woolf 2003, XIII European Workshop on White Dwarfs, NATO Science Series II, Vol. 105, eds. R. Silvotti and D. de Martino, pp. 93

[ADS] Photometric and Spectroscopic Monitoring of the sdBV star PG 1605+072: The Multi-Site Spectroscopic Telescope (MSST) Project
U. Heber, et al. 2003, XIII European Workshop on White Dwarfs, NATO Science Series II, Vol. 105, eds. R. Silvotti and D. de Martino, pp. 105

[ADS] Near infrared imaging polarimetry of proto-planetary nebula - OH231.8+4.2
A. Ahmad, T. Gledhill, A. McCall, M. Takami 2002, Observed HR Diagrams And Stellar Evolution, ASP Conf. Ser. Vol. 274, eds. T.Lejeune and J.Fernandes, pp. 122

Others:

[ADS] An Observational Analysis of Helium-Rich Subdwarf B Stars
A. Ahmad 2004, Ph.D. Thesis, Queen's University Belfast

[ADS] Pulsations in He-sdB stars
A. Ahmad 2002, in Student assignments and observing projects, eds. E.G.Meistas and J.-E.Solheim, pp. 33

[ADS] Remote observations at NYTT
J. Schultz, A. Oksanen, A. Ahmad, T. Eenmae 2002, in Student assignments and observing projects, eds. E.G.Meistas and J.-E.Solheim, pp. 67

[ADS] Doppler imaging of FK Comae Berenices
A. Ahmad, R. Stonkute 2002, in Student assignments and observing projects, eds. E.G.Meistas and J.-E.Solheim, pp. 95

[ADS] A near infrared imaging polarimetry investigation of the bipolar proto-planetary nebula - OH231.8+4.2
A. Ahmad 2001, M.Sc. Thesis, University of Hertfordshire

Observing experience:

[2002] Jacobus Kapteyn Telescope (1.0-m) [La Palma] : High speed photometry of PG1605+072 (MSST 2002)

[2002] Maksutov Telescope (0.5-m) [Moletai] : High speed photometry of PG2322+214

[2002] 165 cm Telescope (1.6-m) [Moletai] : High speed photometry of PG2322+214

[2003] William Herschel Telescope (4.2-m) [La Palma] : High resolution spectroscopy of He-sdB stars

[2003] Elizabeth Telescope (1.0-m) [Sunderland] : Differential and stromgren photometry of He-sdB stars

[2004] William Herschel Telescope (4.2-m) [La Palma] : PG1544+488 and other helium-rich subdwarfs: binaries, mergers or bizarre?

[2004] Elizabeth Telescope (1.0-m) [Sunderland] : Time-resolved photometry of southern helium-rich subdwarf B stars

[2005] William Herschel Telescope (4.2-m) [La Palma] : Parameters of hot subdwarfs of the double-lined spectroscopic binary - PG1544+488

[2005] Anglo-Australian Telescope (3.9-m) [Coonabarabran] : Tracing the origin of helium-rich subluminous stars through their surface composition

[2005] Himalayan Chandra Telescope (2.0-m) [operated remotely from Hosakote] : Himalayan asteroseismology: combining pressure and gravity modes to probe the structure of BAL090100001



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