Research topics:

Young stellar objects, Late stages of stellar evolution, Active galactic nuclei, Radiative transfer modeling, Bispectrum speckle interferometry, IR long-baseline interferometry: VLTI AMBER, LBT LINC-NIRVANA Data Reduction Software

Press releases:

08 Dec. 2009 - Im Reich der schwarzen Löcher , Towards an exquisite look at black holes , 05 Aug. 2009 - Double Engine for a Nebula (ESO) 29 July 2009 - Ein Gigant in Aufruhr , Unveiling the true face of a gigantic star , ESO 02 Apr. 2009 - Im Herzen des Orion-Nebels , In the heart of the Orion Nebula , MPG: or , A&A Previous years

VLTI/AMBER/MIDI

VLTI/ATs

LBT LINC-NIRVANA

  Evolved stars:

Eta Car Speckle BCD

Eta Car HST FOC

Eta Car Speckle H Alpha

Eta Car Disk

Eta Car HST FOS spectro

Eta Car Polarimetry

Eta Car VLTI/AMBER

IRC+10216 (1)

IRC+10216 (2)

IRC+10216 (3)

IRC+10216 (4)

IRC+10216 (5)

Red Rectangle

Red Rectangle 2

Red Rectangle 3

VY CMa, NML Cyg, IRC+10420, WR 118

R Cas, R Leo

CIT 3, OH104.9+2.4, AFGL 2290, LP And

VLTI, LBT

MWC 349

Binaries 1-5

Gliese 569B

IOTA: T Cep, GI2T: R Cas

IOTA: R CrB

VLTI/VINCI: Mira

VLTI/MIDI: RR Sco

IOTA: Capella

VLTI/MIDI: IRAS08002

AMBER + MIDI: CPD-57°2874

AMBER: Kappa CMa

AMBER: RS Oph

VLTI/AMBER: Gamma2  Velorum

VLTI/AMBER: Betelgeuse

VLTI/AMBER: HD87643

Frosty Leonis

  Young stellar objects:

NGC 3603

Z CMa, NX Pup, DF Tau, V376 Cas

Moving shadows

Theta¹ Ori C (1)

Theta¹ Ori C (2)

Orion OB stars

LkHa198, Elias1, HK Ori, V380 Ori

S140 IRS1 (1)

S140 IRS1 (2)

S140 IRS3

R Mon

Mon R2

K3-50A

AFGL 2591

IRAS 23151+5912

NGC 7538

VLTI/MIDI: Herbig stars I

VLTI/MIDI: Herbig stars II

VLTI/AMBER: MWC 297

IOTA: Theta1 Ori C

VLTI/AMBER image: Theta 1 Ori C

VLTI/AMBER YSOs: HD163296,HD104237, HD98922, MWC297

R Monocerotis

  Extragalactic objects:

R 136

R 136

NGC 7469

R 64

NGC 1068 K-band, 6m Tel

NGC 1068 K-band, 6m Tel

VLTI/VINCI: NGC 1068

VLTI/MIDI: NGC 1068

Radiative transfer modeling

VLTI/AMBER: WOH G64 in the LMC

LINC-NIRVANA

Baldwin effect

NGC 3783; accretion disks

NGC4151, Mrk231, NGC4051, & QSO IRAS13349+2438

IOTA JHK interferograms Click image to enlarge.

Real-time bispectrum speckle interferometry: 76 mas res. Frame rate of data recording & processing: ~2 per second. SAO 6 m telescope, K-band. Click image to enlarge

H- and K-band VLTI-AMBER interferograms (two 1.8 m ATs; HD 48433)