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Tools

Astronomical Databases:

Simbad Object information link to site
Vizier Astronomical data and tables link to site
CADC Data archives for a variety of instruments and data sets link to site
IRSA The NASA/IPAC Infrared Science Archive link to site
Astronomical Meetings Information about astronomy related conferences, workshops and meetings link to site

Abstract services, Newsletters and Journals:

NASA ADS Query Form Search articles in astronomical journals, conference proceedings and pre-prints link to site
Astro-ph Pre-print server for astronomical papers link to site
Star Formation Newsletter Abstracts of newly accepted papers about galactic star formation and related topics link to site
Massive Stars Newsletter Abstracts, conference announcements and job adverts from the IAU working group on massive stars link to site
MNRAS Monthly Notices of the Royal Astronomical Society (Wiley-Blackwell) link to site
A&A Astronomy and Astrophysics (EDP Sciences) link to site
ApJ The Astrophysical Journal (IOP Science) link to site
AJ The Astronomical Journal (IOP Science) link to site
ARA&A Annual Review of Astronomy and Astrophysics (Annual Reviews) link to site
PASP Publications of the Astronomical Society of the Pacific (Chicago Journals) link to site

Astronomical and Mathematical Calculations:

HEASARC: Coordinate Converter Convert astronomical coordinates between different systems link to site
Uncertainty Calculator Given an equation and the uncertainties in the variables, obtain the overall error link to site
QuickMath Online integration, differentiation, algebra and equation solving link to site
Point Source Converter Convert between magnitudes and flux density in various observational bands from U to Q link to site