This brief tutorial shows you how to quickly add proper motions and
photometry from Gaia to (almost) any object list using the Virtual
Observatory. The VO protocol most suited to this kind of this is TAP
("table access protocol") and lets you transfer data and queries to
database servers. In the example, we will be using TOPCAT as a client.
There is no lock-in to it: There are libraries and other tools
allowing an integration of TAP operations into arbitrary workflows –
that's what standards are about. Tutorial supplements apply the
techniques to Simbad, show how to use TAP from Python, and introduce
UCDs.
This course introduces advanced usage of Hierarchical Progressive
Surveys (HiPS) and Multi-Order Coverage (MOC) maps in Aladin. Using
this document, you will learn how to handle a problem like : “I have a
set of images. I would like to select regions in my observations that
are above a given threshold in another survey (e.g. at low
extinction), retrieve objects from very large catalogs (e.g. Gaia +
WISE) in these non-trivial shapes and not-necessarily-connected
regions, and combine them to visualise some quantities (e.g. color
color diagram).“
This tutorial shows how to use the CDS tools to gather information on
specific astronomical objects. The tutorial covers the search for
information on NGC 4039 in the CDS Portal, the search for data on NGC
4039 in Aladin, and the omparison of the coverages of Sky Surveys and
select interacting galaxies that have SDSS and GALEX data.
In this tutorial you will learn about asteroids, a very interesting
and current topic in our exploration of the Solar System and of
planetary formation. You will learn about their orbital
characteristics by querying a database.
Intermediate computer skills are recommended, as the tutorial requires
the (guided) query of online electronic databases and use of
histograms.
The VO client Aladin offers powerful facilities of creating an
astrometrical calibration to images lacking WCS (World Coordinate
System) information. This tutorial shows how to go about doing this
for an image of the Ring Nebula in Lyr.
The overall goal of this tutorial is to become familiar with VOSpec.
For that, we are going to build the Spectral Energy Distribution (SED)
of two Herbig Ae/Be stars, compare them and categorise them as group 1
or group 2 Herbig Ae/Be stars.
This tutorial uses SPLAT-VO to search the VO registry for spectra of
galaxies and quasars. From the obtained spectra, the Hydrogen Lyman
Alpha line will be used to compute redshift and velocity
Within this intermediate use case you learn about supernovae (see
also the tutorial “Distance to the Crab Nebula“,
ivo://edu.euro-vo.org/tutorials/08_m1_distance) and determine the
celestial coordinates of a just discovered candidate supernova on an
provided image without astrometric calibration. This use case provides
a glimpse of an activity that is representative of the practical tasks
that astronomers have to perform when they analyze data.
Data Discovery Using the Virtual Observatory Registry
Date:
14 Mar 2023 10:41:41
Publisher:
The GAVO DC team
Description:
There are many ways to access registry data. A fairly powerful one is
the Web Interface to the Relational Registry (WIRR for short) at
http://dc.g-vo.org/WIRR To actually speak to the VO services
discovered, clients speaking the service's protocols are still
required. In this tutorial, Topcat plays that role. Starting from a
simple use case, we work up to investigating the Tully-Fisher relation
in different bands using independently discovered resources.
