Publications (18)
Lyman continuum leaking galaxies - Search strategies and local candidates
Nils Bergvall, Elisabet Leitet, Erik Zackrisson +1
Star-forming dwarf galaxies leaking Lyman-continuum (LyC) radiation may have played an important role in the reionization of the Universe. Local galaxies exhibiting LyC leakage cou…
Kinematics of Haro11 - the miniature Antennae
Göran Ãstlin, Thomas Marquart, Robert Cumming +5
(abridged) Luminous blue compact galaxies are among the most active galaxies in the local universe in terms of their star formation rate per unit mass. They may be seen as the loca…
Stellar kinematics in blue compact galaxies
Robert J. Cumming, Göran Ãstlin, Thomas Marquart +3
In a programme of observations of local luminous blue compact galaxies (BCGs), we are investigating kinematics by using tracers of both stars and ionized gas. Here we summarise our…
HIRES, the high-resolution spectrograph for the ELT
Alessandro Marconi, Manuel Abreu, Vardan Adibekyan +99
HIRES will be the high-resolution spectrograph of the European Extremely Large Telescope at optical and near-infrared wavelengths. It consists of three fibre-fed spectrographs prov…
The Lyman-alpha Reference Sample: I. Survey outline and first results for Markarian 259
Göran Ãstlin, Matthew Hayes, Florent Duval +19
The Lyman-alpha reference sample (LARS) is a program with the Hubble Space Telescope (HST) that provides a sample of local universe laboratory galaxies in which to study the astrop…
The Tartu Observatory Fiber-fed Echelle Spectrograph (TOFES) Data Reduction Pipeline
Sandipan P. D. Borthakur, Tõnis Eenmäe, Nikolai Piskunov +9
We introduce the data reduction pipeline for the Tartu Observatory Fiber-fed Echelle Spectrograph (TOFES). TOFES is installed in the Coudé room and will be connected to the 1.5 m…
Can Microlensing Explain the Long-Term Optical Variability of Quasars?
Erik Zackrisson, Nils Bergvall, Thomas Marquart +1
Although controversial, the scenario of microlensing as the dominant mechanism for the long-term optical variability of quasars does provide a natural explanation for both the stat…
Inside a VAMDC data node - Putting standards into practical software
Samuel Regandell, Thomas Marquart, Nikolai Piskunov
Access to molecular and atomic data is critical for many forms of remote sensing analysis across different fields. Many atomic and molecular databases are however highly specialize…
Stellar dynamics of blue compact galaxies. II. Further indications of a merger in ESO 338-IG04
Robert J. Cumming, Kambiz Fathi, Göran Ãstlin +5
Luminous blue compact galaxies, common at z~1 but now relatively rare, show disturbed kinematics in emission lines. As part of a programme to understand their formation and evoluti…
Optimal extraction of echelle spectra: getting the most from observations
Nikolai Piskunov, Ansgar Wehrhahn, Thomas Marquart
The price of instruments and observing time on modern telescopes is quickly increasing with the size of the primary mirror. Therefore, it is worth revisiting the data reduction alg…
The starburst phenomenon from the optical/near-IR perspective
Nils Bergvall, Thomas Marquart, Göran Ãstlin +1
The optical/near-IR stellar continuum carries unique information about the stellar population in a galaxy, its mass function and star-formation history. Star-forming regions displa…
Deep multiband surface photometry on star forming galaxies: I. A sample of 24 blue compact galaxies
Genoveva Micheva, Göran Ãstlin, Nils Bergvall +5
[Abridged] We present deep optical and near-infrared UBVRIHKs imaging data for 24 blue compact galaxies (BCGs). The sample contains luminous dwarf and intermediate-mass BCGs which…
Local starburst galaxies and their descendants
Nils Bergvall, Thomas Marquart, Michael J. Way +4
Despite strong interest in the starburst (hereafter SB) phenomenon, the concept remains ill-defined. We use a strict definition of SB to examine the statistical properties of local…
Deep multiband surface photometry on star forming galaxies: II. A volume limited sample of 21 emission lines galaxies
Genoveva Micheva, Göran Ãstlin, Erik Zackrisson +6
We present deep surface photometry of a volume--limited sample of 21 UM emission line galaxies in broadband optical UBVRI and near infra-red (NIR) HKs filters. The sample comprises…
An archive of reduced and telluric-corrected CRIRES+ L- and M-band spectra with slit-tilt and wavelength calibrations
Thomas Marquart, Alexis Lavail
The high-resolution near-infrared spectrograph CRIRES+ at ESO VLT covers the Y, J, H, K, L and M bands. The U-Ne and Fabry-Perot calibration light sources, however, only work up to…
The Lyman Reference Sample XIV: Lyman imaging of 45 low redshift star-forming galaxies and inferences on global emission
Jens Melinder, Göran Ãstlin, Matthew Hayes +18
We present Ly imaging of 45 low redshift star-forming galaxies observed with the Hubble Space Telescope. The galaxies have been selected to have moderate to high star formatio…
VLT/CRIRES+ observations of warm Neptune WASP-107 b: Challenges in detecting molecules with ground-based transmission spectroscopy of cooler and cloudy exoplanets
Linn Boldt-Christmas, Adam D. Rains, Nikolai Piskunov +15
Atmospheres of transiting exoplanets can be studied spectroscopically using space-based or ground-based observations. Each has its own strengths and weaknesses, so there are benefi…
ANDES, the high-resolution spectrograph for the ELT: design and performance analysis of the YJH spectrograph
Vinooja Thurairethinam, David Lee, James Stevenson +29
The ArmazoNes high Dispersion Echelle Spectrograph (ANDES) is a powerful second-generation high-resolution spectroscopic instrument for the Extremely Large Telescope (ELT). The UBV…