A5103323995- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Molecular Spectroscopy and Structure
- Astrophysics and Cosmic Phenomena
- Astro and Planetary Science
- Scientific Research and Discoveries
- Plant Water Relations and Carbon Dynamics
- Spectroscopy and Laser Applications
- Pulsars and Gravitational Waves Research
- Physical Education and Training Studies
- Ergonomics and Musculoskeletal Disorders
- SAS software applications and methods
- Impact of Light on Environment and Health
- Remote Sensing in Agriculture
European Southern Observatory
2009-2017
Atacama Large Millimeter Submillimeter Array
2011-2017
Cardiff University
2009
University of Bonn
2007
By combining <i>Herschel<i/>-SPIRE observations obtained as part of the <i>Herschel<i/> Virgo Cluster Survey with 21 cm Hi data from literature, we investigate role cluster environment on dust content spiral galaxies. We show for first time that extent disk is significantly reduced in Hi-deficient galaxies, following remarkably well observed "truncation" disk. The ratio submillimetre-to-optical diameter correlates Hi-deficiency, suggesting able to strip gas. These results provide important...
Aims: We focus on the kinematical properties of a proto-binary to study infall and rotation gas towards its two protostellar components. Methods: present ALMA Science Verification observations with high-spectral resolution IRAS 16293-2422 at 220.2 GHz. The wealth molecular lines in this source very high spectral offered by allow us kinematics unprecedented detail. Results: first detection an inverse P-Cygni profile B three brightest lines. line profiles are fitted simple two-layer model...
Abstract We present the results of ALMA spectroscopic follow-up a z = 6.766 Ly α emitting galaxy behind cluster RX J1347.1−1145. report detection [C ii ] 158 μ m line fully consistent with redshift and peak optical emission. Given magnification 5.0 ± 0.3, intrinsic (corrected for lensing) luminosity is L , roughly ∼5 times fainter than other detections ∼ 7 galaxies. The result indicates that low in galaxies compared to local counterparts might be caused by their metallicities and/or...
We use a sample of 19 Gamma Ray Bursts (GRBs) that exhibit single-peaked optical light curves to test the standard fireball model by investigating relationship between time onset afterglow and temporal rising index. Our includes GRBs X-ray flashes for which we derive wide range initial Lorentz factors ($40 < \Gamma 450$). Using plausible parameters typical frequency forward shock is expected lie close band; within this low framework, data constrain $\epsilon_e$ show values derived from early...
GRBs generate an afterglow emission that can be detected from radio to X-rays during days, or even weeks after the initial explosion. The peak of this crosses mm/submm range first hours making their study in crucial for constraining models. Observations have been limited until now due low sensitivity observatories range. We present observations 10 GRB afterglows obtained APEX and SMA, as well detection a with ALMA, put them into context all published spectral will covered by ALMA. catalogue...
We present the optical data for 195 HI-selected galaxies that fall within both Sloan Digital Sky Survey (SDSS) and Parkes Equatorial (ES). The photometric quantities have been independently recomputed our sample using a new pipeline optimized large galaxies, thus correcting SDSS's limited reliability automatic photometry of angularly or low surface brightness (LSB) galaxies. outline magnitude uncertainty in SDSS catalog-level derive quantitative method over-sky subtraction pipeline. main...
We present the extensive follow-up campaign on afterglow of GRB 110715A at 17 different wavelengths, from X-ray to radio bands, starting 81 seconds after burst and extending up 74 days later. performed for first time a observation with ALMA observatory. find that is very bright optical wavelengths. use near infrared spectroscopy provide further information about progenitor's environment its host galaxy. The spectrum shows weak absorption features redshift z = 0.8225, which reveal galaxy low...
We utilize color information for an HI-selected sample of 195 galaxies to explore the star formation histories and physical conditions that produce observed colors. show HI selection creates a significant offset towards bluer colors can be explained by enhanced recent bursts formation. There is also no obvious bimodality, because restricts bluer, actively forming systems, diminishing importance red sequence. Rising rates are still required explain than g-r < 0.3. demonstrate bluest in our...
After over three decades of unsuccessful attempts, we report the first detection molecular gas emission in Malin 1, largest spiral galaxy observed to date, and one most iconic giant low surface brightness galaxies. Using ALMA, detect significant $^{12}$CO(J=1-0) galaxy's central region tentatively identify CO across regions on disc. These observations allow for a better estimate H$_2$ mass density, both which are remarkably given scale. By integrating data its HI mass, derive very...
GRB 110715A had a bright afterglow that was obscured in the optical by high Galactic extinction. We discovered submillimeter counterpart with APEX and followed it radio ATCA for over 2 months. Additional submm observations were performed ALMA as test of ToO procedures during commissioning, becoming first to be detected observatory. UV, NIR Swift/UVOT 2.2 m/GROND La Silla X-ray data obtained Swift/XRT. The dataset is complemented spectroscopic from VLT/X-shooter spectrograph. absorption...
Abstract Gamma-ray bursts (GRBs) generate an afterglow with emission peaking in the millimetre and submillimeter (mm/submm) range during first hours to days, making study these wavelengths of great importance. Here we give overview data that has been collected for GRB observations this until September 2011. The total sample includes 102 GRBs, which 88 have observations, rest are only host galaxy searches. 22 detections cover redshift between 0.168 8.2 peak luminosities span 2.5 orders...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation D. A. Garcia‐Appadoo, West, J. Dalcanton, M. Disney; What We Can Learn From the HI Properties of Galaxies—Galaxies Appear Simpler Than Expected?. AIP Conf. Proc. 8 June 2010; 1240 (1): 162–163. https://doi.org/10.1063/1.3458475 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley...