@article{UBHD-67911404,
  author={Appenzeller, Immo and Heidt, Jochen and Mehlert, D{\"o}rte and M{\"o}llenhoff, Claus and Noll, Stefan and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas and Wagner, Stefan},
  title={The FORS deep field},
  year={2000},
  pages={44-48},
  language={eng},
  volume={100},
  journal={The ESO messenger},
}
@article{UBHD-67911405,
  author={Appenzeller, Immo and Heidt, Jochen and Mehlert, D{\"o}rte and M{\"o}llenhoff, Claus and Noll, Stefan and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas and Wagner, Stefan},
  title={The FORS deep field},
  year={2000},
  pages={44-48},
  language={eng},
  issn={0026-0363 and 0722-6691},
  volume={100},
  journal={The messenger / ESO, European Southern Observatory},
}
@conference{UBHD-67911410,
  author={Appenzeller, Immo and Dietrich, Matthias and F{\"u}rtig, Walter and Heidt, Jochen and K{\"u}mmel, Martin W. and Mehlert, D{\"o}rte and M{\"o}llenhoff, Claus and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas},
  title={Science with FORS},
  year={2000},
  pages={3-11},
  language={eng},
  isbn={3-540-67163-3 and 978-3-540-67163-3},
}
@article{UBHD-67912274,
  author={Appenzeller, Immo and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas},
  title={Successful commissioning of FORS1},
  subtitle={the first optical instrument on the VLT},
  year={1998},
  pages={1-6},
  language={eng},
  issn={0026-0363 and 0722-6691},
  volume={94},
  journal={The messenger / ESO, European Southern Observatory},
}
@conference{UBHD-67909356,
  author={Bender, Ralf and Appenzeller, Immo and Heidt, Jochen and Mehlert, D{\"o}rte and Noll, Stefan and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas and Wagner, Stefan},
  title={The FORS deep field},
  subtitle={photometric data and photometric redshifts},
  year={2001},
  pages={96-101},
  language={eng},
  isbn={3-540-42799-6 and 978-3-540-42799-5},
}
@article{UBHD-67910999,
  author={Cristiani, Stefano and Appenzeller, Immo and Szeifert, Thomas},
  title={The first VLT FORS1 spectra of Lyman-break candidates in the HDF-S and AXAF deep field},
  year={2000},
  pages={489-492},
  language={eng},
  issn={1432-0746},
  volume={359},
  journal={Astronomy and astrophysics},
}
@article{UBHD-68069951,
  author={Crowther, Paul A. and Szeifert, Thomas and Stahl, Otmar},
  title={B 517},
  subtitle={another very late WNL star in M 33*},
  year={1997},
  pages={543-547},
  language={eng},
  issn={1432-0746},
  volume={318},
  note={Gesehen am 09.01.2017},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912258,
  author={Dietrich, Matthias and Appenzeller, Immo and Wagner, Stefan and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas},
  title={Spectroscopic study of high redshift quasars},
  year={1999},
  pages={L1-L4},
  language={eng},
  issn={0004-6361},
  volume={352},
  journal={Astronomy & astrophysics},
}
@article{UBHD-67912259,
  author={Dietrich, Matthias and Appenzeller, Immo and Wagner, Stefan and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas},
  title={Spectroscopic study of high redshift quasars},
  year={1999},
  pages={L1-L4},
  language={eng},
  issn={1432-0746},
  volume={352},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67894115,
  author={G{\"a}ng, Thomas and Wolf, Bernhard and Stahl, Otmar and Kaufer, Andreas and Mandel, Holger and Szeifert, Thomas},
  title={Analysis of the line variations in the wind of HD 160529},
  year={1995},
  pages={1311},
  language={eng},
  issn={0002-7537},
  volume={27},
  number={4},
  journal={Bulletin of the American Astronomical Society},
}
@article{UBHD-67884362,
  author={G{\"a}ng, Thomas and Gummersbach, Christoph and Kaufer, Andreas and Mandel, Holger and Stahl, Otmar and Szeifert, Thomas and Wolf, Bernhard},
  title={Long-term spectroscopic monitoring of HD 160529},
  year={1994},
  pages={1446},
  language={eng},
  issn={0002-7537},
  volume={26},
  journal={Bulletin of the American Astronomical Society},
}
@conference{UBHD-67883740,
  author={G{\"a}ng, Thomas and Gummersbach, Christoph and Kaufer, Andreas and Mandel, Holger and Stahl, Otmar and Szeifert, Thomas and Wolf, Bernhard},
  title={Spectral variations of HD 160529},
  year={1993},
  pages={134},
  language={eng},
}
@article{UBHD-67901937,
  author={Heidt, Jochen and Appenzeller, Immo and M{\"o}llenhoff, Claus and Szeifert, Thomas and Mehlert, D{\"o}rte and Noll, Stefan and Seifert, Walter and Stahl, Otmar and Wagner, Stefan},
  title={The FORS deep field},
  subtitle={Field selection, photometric observations and photometric catalog},
  year={2003},
  pages={49-61},
  language={eng},
  issn={1432-0746},
  volume={398},
  number={1},
  note={Gesehen am 13.11.2015},
  journal={Astronomy and astrophysics},
  doi={10.1051/0004-6361:20021620},
}
@article{UBHD-67912252,
  author={Heidt, Jochen and Appenzeller, Immo and Seifert, Walter and Szeifert, Thomas and Stahl, Otmar},
  title={Observations of the host galaxies of the BL Lacertae objects H 0414+009 and OJ 287 with FORS1 at VLT−UT1},
  year={1999},
  pages={L11-L16},
  language={eng},
  issn={0004-6361},
  volume={352},
  journal={Astronomy & astrophysics},
}
@article{UBHD-67912253,
  author={Heidt, Jochen and Appenzeller, Immo and Seifert, Walter and Szeifert, Thomas and Stahl, Otmar},
  title={Observations of the host galaxies of the BL Lacertae objects H 0414+009 and OJ 287 with FORS1 at VLT−UT1},
  year={1999},
  pages={L11-L16},
  language={eng},
  issn={1432-0746},
  volume={352},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912248,
  author={Hummel, Wolfgang and Szeifert, Thomas and Seifert, Walter and Appenzeller, Immo},
  title={A spectroscopic study of be stars in the SMC cluster NGC 330},
  year={1999},
  pages={L31-L35},
  language={eng},
  issn={1432-0746},
  volume={352},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912249,
  author={Hummel, Wolfgang and Szeifert, Thomas and Seifert, Walter and Appenzeller, Immo},
  title={A spectroscopic study of be stars in the SMC cluster NGC 330},
  year={1999},
  pages={L31-L35},
  language={eng},
  issn={0004-6361},
  volume={352},
  journal={Astronomy & astrophysics},
}
@conference{UBHD-67911411,
  author={Hummel, Wolfgang and Szeifert, Thomas and Seifert, Walter and Appenzeller, Immo},
  title={A spectroscopic study of Be stars in the SMC Cluster NGC 330},
  year={2000},
  pages={79},
  language={eng},
  isbn={1-58381-045-5 and 978-1-58381-045-3},
}
@article{UBHD-67912250,
  author={Jaeger, Klaus and Appenzeller, Immo and Szeifert, Thomas and Heidt, Jochen and Seifert, Walter and Stahl, Otmar},
  title={Imaging and spectroscopy with FORS1 in the field of Q 0307-0015},
  year={1999},
  pages={L17-L21},
  language={eng},
  issn={1432-0746},
  volume={352},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912251,
  author={Jaeger, Klaus and Appenzeller, Immo and Szeifert, Thomas and Heidt, Jochen and Seifert, Walter and Stahl, Otmar},
  title={Imaging and spectroscopy with FORS1 in the field of Q 0307-0015},
  year={1999},
  pages={L17-L21},
  language={eng},
  issn={0004-6361},
  volume={352},
  journal={Astronomy & astrophysics},
}
@conference{UBHD-67884336,
  author={Kaufer, Andreas and Mandel, Holger and Stahl, Otmar and Wolf, Bernhard and Szeifert, Thomas and G{\"a}ng, Thomas and Gummersbach, Christoph},
  title={High resolution spectroscopy at the ESO 50 cm telescope},
  subtitle={spectroscopic monitoring of luminous hot stars},
  year={1994},
  pages={532},
  language={eng},
  isbn={0-7923-3045-5 and 0-7923-3044-7 and 978-0-7923-3044-8 and 978-0-7923-3045-5},
}
@article{UBHD-67898423,
  author={Kaufer, Andreas and Stahl, Otmar and Wolf, Bernhard and G{\"a}ng, Thomas and Gummersbach, Christoph and Mandel, Holger and Szeifert, Thomas},
  title={Long-term spectroscopic monitoring of BA-type supergiants},
  subtitle={I. Halpha_ line-profile variability},
  year={1996},
  pages={887-901},
  language={eng},
  issn={1432-0746},
  volume={305},
  note={Gesehen am 05.11.2015},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67898425,
  author={Kaufer, Andreas and Stahl, Otmar and Wolf, Bernhard and G{\"a}ng, Thomas and Gummersbach, Christoph and Mandel, Holger and Peitz, Jochen and Rivinius, Thomas J. and Szeifert, Thomas},
  title={Long-term spectroscopic monitoring of BA-type supergiants},
  subtitle={II. High-velocity absorptions in βOri and HD96919},
  year={1996},
  pages={599-608},
  language={eng},
  issn={1432-0746},
  volume={314},
  note={Gesehen am 05.11.2015},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67898426,
  author={Kaufer, Andreas and Stahl, Otmar and Wolf, Bernhard and G{\"a}ng, Thomas and Gummersbach, Christoph and Mandel, Holger and Peitz, Jochen and Rivinius, Thomas J. and Szeifert, Thomas},
  title={Long-term spectroscopic monitoring of BA-type supergiants},
  subtitle={III. Variability of photospheric lines},
  year={1997},
  pages={273-286},
  language={eng},
  issn={1432-0746},
  volume={320},
  note={Gesehen am 05.11.2015},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912254,
  author={M{\"o}llenhoff, Claus and Appenzeller, Immo and Heidt, Jochen and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas},
  title={Morphological structure and colors of NGC 1232 and NGC 1288},
  year={1999},
  pages={L5-L10},
  language={eng},
  issn={1432-0746},
  volume={352},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912255,
  author={M{\"o}llenhoff, Claus and Appenzeller, Immo and Heidt, Jochen and Seifert, Walter and Stahl, Otmar and Szeifert, Thomas},
  title={Morphological structure and colors of NGC 1232 and NGC 1288},
  year={1999},
  pages={L5-L10},
  language={eng},
  issn={0004-6361},
  volume={352},
  journal={Astronomy & astrophysics},
}
@article{UBHD-67911412,
  author={Muschielok, Bernard and Appenzeller, Immo and Seifert, Walter and Szeifert, Thomas},
  title={VLT FORS spectra of blue supergiants in the local group galaxy NGC 6822},
  year={1999},
  pages={L40-L44},
  language={eng},
  issn={1432-0746},
  volume={352},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67912247,
  author={Muschielok, Bernard and Appenzeller, Immo and Seifert, Walter and Szeifert, Thomas},
  title={VLT FORS spectra of blue supergiants in the local group galaxy NGC 6822},
  year={1999},
  pages={L40-L44},
  language={eng},
  issn={0004-6361},
  journal={Astronomy & astrophysics},
}
@article{UBHD-68405662,
  author={Rivinius, Thomas J. and Stahl, Otmar and Wolf, Bernhard and Kaufer, Andreas and Gummersbach, Christoph and Mandel, Holger and Peitz, Jochen and Schweickhardt, J{\"o}rg and Szeifert, Thomas and Tubbesing, Sascha},
  title={Stellar and circumstellar variability of the Be star mu Cen IV},
  year={2001},
  pages={50 S.},
  language={eng},
  volume={7},
  number={5},
  journal={The journal of astronomical data},
}
@article{UBHD-67898431,
  author={Rivinius, Thomas J. and Stahl, Otmar and Wolf, Bernhard and Kaufer, Andreas and G{\"a}ng, Thomas and Gummersbach, Christoph and Mandel, Holger and Peitz, Jochen and Szeifert, Thomas},
  title={Variations of the stellar wind in early-B hypergiants},
  year={1997},
  pages={819-834},
  language={eng},
  issn={1432-0746},
  volume={318},
  note={Gesehen am 05.11.2015},
  journal={Astronomy and astrophysics},
}
@article{UBHD-68043321,
  author={Schmid, Hans Martin and Kaufer, Andreas and Camenzind, Max and Rivinius, Thomas J. and Stahl, Otmar and Szeifert, Thomas and Tubbesing, Sascha and Wolf, Bernhard},
  title={Spectroscopic monitoring of the jet in the symbiotic star MWC 560},
  subtitle={I. Spectroscopic properties, general outflow structure and system parameters},
  year={2001},
  pages={206-240},
  language={eng},
  issn={1432-0746},
  volume={377},
  number={1},
  note={Gesehen am 27.10.2016},
  journal={Astronomy and astrophysics},
  doi={10.1051/0004-6361:20011073},
}
@article{UBHD-68069515,
  author={Schweickhardt, J{\"o}rg and Stahl, Otmar and Szeifert, Thomas and Wolf, Bernhard},
  title={Revised mass determination of the super massive Wolf-Rayet star WR 22*},
  year={1999},
  pages={127-136},
  language={eng},
  issn={1432-0746},
  volume={347},
  note={Gesehen am 05.01.2017},
  journal={Astronomy and astrophysics},
}
@incollection{UBHD-68069511,
  author={Schweickhardt, J{\"o}rg and Wolf, Bernhard and Schmid, Hans Martin and Kaufer, Andreas and Stahl, Otmar and Szeifert, Thomas and Tubbesing, Sascha},
  title={Spectroscopic monitoring of the LBV-like WR star HD 5980 in the SMC with FEROS},
  year={2000},
  pages={113-115},
  language={eng},
  isbn={1-58381-031-5 and 978-1-58381-031-6},
  booktitle={Thermal and ionization aspects of flows from hot stars},
  editor={Lamers, Henny J. G. L. M. and Sapar, Arved},
}
@conference{UBHD-67910998,
  author={Seifert, Walter and Appenzeller, Immo and Stahl, Otmar and Xu, Wenli and Szeifert, Thomas},
  title={Commissioning of the FORS instruments at the ESO VLT},
  year={2000},
  pages={96-103},
  language={eng},
}
@article{UBHD-67883730,
  author={Stahl, Otmar and Mandel, Holger and Szeifert, Thomas and Wolf, Bernhard},
  title={Forbidden emission lines in the spectrum of P Cygni},
  year={1991},
  pages={467-469},
  language={eng},
  issn={0004-6361},
  volume={244},
  number={2},
  journal={Astronomy & astrophysics},
}
@conference{UBHD-67883726,
  author={Stahl, Otmar and Mandel, Holger and Szeifert, Thomas and Wolf, Bernhard},
  title={High-dispersion spectroscopic monitoring of P Cygni stars},
  year={1990},
  pages={63},
  language={eng},
}
@article{UBHD-67883737,
  author={Stahl, Otmar and Mandel, Holger and Wolf, Bernhard and G{\"a}ng, Thomas and Kaufer, Andreas and Szeifert, Thomas},
  title={Long-term spectroscopic monitoring of P Cygni},
  subtitle={I. Spectral atlas of P Cygni},
  year={1993},
  pages={167-177},
  language={eng},
  issn={0365-0138},
  volume={99},
  journal={Astronomy and astrophysics},
}
@article{UBHD-67884338,
  author={Stahl, Otmar and Wolf, Bernhard and G{\"a}ng, Thomas and Kaufer, Andreas and Mandel, Holger and Szeifert, Thomas},
  title={Long-term spectroscopic monitoring of P Cygni},
  subtitle={II. Spectroscopic variations of P Cygni during 1990-1992},
  year={1994},
  pages={1-8},
  language={eng},
  issn={0365-0138},
  volume={107},
  journal={Astronomy and astrophysics},
}
@article{UBHD-68069497,
  author={Stahl, Otmar and Wolf, Bernhard and Kaufer, Andreas and Rivinius, Thomas J. and Szeifert, Thomas},
  title={Long-term spectroscopic monitoring of the Luminous Blue Variable AG Carinae*},
  year={2001},
  pages={54-69},
  language={eng},
  issn={1432-0746},
  volume={375},
  number={1},
  note={Gesehen am 05.01.2017},
  journal={Astronomy and astrophysics},
  doi={10.1051/0004-6361:20010824},
}
@article{UBHD-68069048,
  author={Stahl, Otmar and Kaufer, Andreas and Rivinius, Thomas J. and Szeifert, Thomas and Wolf, Bernhard},
  title={Long-term spectroscopic monitoring of the Luminous Blue Variable HD 160529},
  year={2003},
  pages={279-291},
  language={eng},
  issn={1432-0746},
  volume={400},
  number={1},
  note={Gesehen am 04.01.2017},
  journal={Astronomy and astrophysics},
  doi={10.1051/0004-6361:20021908},
}
@article{UBHD-68405661,
  author={Stahl, Otmar and Kaufer, Andreas and Wolf, Bernhard and G{\"a}ng, Thomas and Gummersbach, Christoph and Mandel, Holger and Rivinius, Thomas J. and Szeifert, Thomas},
  title={Long-term time-series spectroscopy of OBA supergiants},
  year={2000},
  language={eng},
  number={23/24},
  journal={The journal of astronomical data},
}
@conference{UBHD-67883731,
  author={Stahl, Otmar and Mandel, Holger and Szeifert, Thomas and Wolf, Bernhard},
  title={One year spectroscopic monitoring of P Cygni stars},
  year={1991},
  pages={71},
  language={eng},
}
@article{UBHD-67883739,
  author={Stahl, Otmar and Wolf, Bernhard and G{\"a}ng, Thomas and Gummersbach, Christoph and Kaufer, Andreas and Mandel, Holger and Szeifert, Thomas},
  title={Periodic spectral variations of THETA-1-ORIONIS-C},
  year={1993},
  pages={L29-L32},
  language={eng},
  issn={0004-6361},
  volume={274},
  journal={Astronomy & astrophysics},
}
@article{UBHD-67894116,
  author={Stahl, Otmar and Kaufer, Andreas and Rivinius, Thomas J. and Szeifert, Thomas and Wolf, Bernhard and G{\"a}ng, Thomas and Gummersbach, Christoph and Mandel, Holger},
  title={Phase-locked photospheric and stellar-wind variations of θ^1^Orionis C},
  year={1996},
  pages={539-548},
  language={eng},
  issn={0004-6361},
  volume={312},
  note={Gesehen am 29.10.2014},
  journal={Astronomy & astrophysics},
}
@conference{UBHD-68069051,
  author={Szeifert, Thomas and Kaufer, Andreas and Stahl, Otmar},
  title={High-resolution spectroscopy of two LBV cycles of HR Car},
  year={2003},
  pages={243-244},
  language={eng},
  isbn={1-58381-133-8 and 978-1-58381-133-7},
}
@article{UBHD-68069958,
  author={Szeifert, Thomas and Stahl, Otmar and Wolf, Bernhard and Zickgraf, Franz-Josef},
  title={HST and groundbased observations of the "Hubble-Sandage" variables in M 31 and M 33},
  year={1996},
  pages={131-145},
  language={eng},
  issn={1432-0746},
  volume={314},
  note={Gesehen am 09.01.2017},
  journal={Astronomy and astrophysics},
}
@conference{UBHD-67912285,
  author={Szeifert, Thomas and Appenzeller, Immo and F{\"u}rtig, Walter and Seifert, Walter and Stahl, Otmar},
  title={Testing FORS},
  subtitle={the first focal reducer for the ESO VLT},
  year={1998},
  pages={20-27},
  language={eng},
  isbn={0-8194-2802-7 and 978-0-8194-2802-8},
}
@article{UBHD-68069053,
  author={Tubbesing, Sascha and Kaufer, Andreas and Stahl, Otmar and Wolf, Bernhard and Maintz, Monika and Rivinius, Thomas J. and Szeifert, Thomas},
  title={The eclipsing hypergiant R 81 (B2.5Ia-O) in the Large Magellanic Cloud},
  subtitle={system properties from spectroscopic and photometric monitoring},
  year={2002},
  pages={931-944},
  language={eng},
  issn={1432-0746},
  volume={389},
  number={3},
  note={Gesehen am 04.01.2017},
  journal={Astronomy and astrophysics},
  doi={10.1051/0004-6361:20020682},
}
@conference{UBHD-67928832,
  author={Wagner, Stefan and Bicknell, Geoffrey V. and Szeifert, Thomas},
  title={Polarization observations of the hot-spot Pictor A West},
  subtitle={shocks in backflows?},
  year={2002},
  pages={259},
  language={eng},
  isbn={1-58381-090-0 and 978-1-58381-090-3},
}
@conference{UBHD-67911403,
  author={Wagner, Stefan and Seifert, Walter and Appenzeller, Immo and Szeifert, Thomas},
  title={Studies of nonthermal emission from AGN through polarization observations at the VLT},
  year={2000},
  pages={95-103},
  language={eng},
  isbn={978-0-8194-3630-6 and 0-8194-3630-5},
}
@article{UBHD-67450788,
  author={Walborn, Nolan R. and Stahl, Otmar and Szeifert, Thomas},
  title={A three-decade outburst of the LMC luminous blue variable R127 draws to a close},
  year={2008},
  pages={L33-L36},
  language={eng},
  issn={2041-8213},
  volume={683},
  number={1},
  note={Gesehen am 26.07.2013},
  journal={The astrophysical journal},
  doi={10.1086/591525},
}
@conference{UBHD-68069514,
  author={Wolf, Bernhard and Kaufer, Andreas and Rivinius, Thomas J. and Stahl, Otmar and Szeifert, Thomas and Tubbesing, Sascha},
  title={Spectroscopic monitoring of luminous hot stars of the magellanic clouds},
  year={2000},
  pages={43-50},
  language={eng},
  isbn={1-58381-031-5 and 978-1-58381-031-6},
}