▪ Abstract Standard star photometry dominated the latter half of the twentieth century
reaching its zenith in the 1980s. It was introduced to take advantage of the high sensitivity …

The paper reviews the observational material in the field of infrared emission of extragalactic
sources. Galactic nuclei whose infrared output is dominated by direct radiation by stars are …

Interstellar dust models for extinction and emission ADS Classic is now deprecated. It will be
completely retired in October 2019. This page will automatically redirect to the new ADS …

Abstract Time-averaged J, H, K and m bol magnitudes are given for 29 O-rich and 20 C-rich
Mira variables in the Large Magellanic Cloud. PL and PC relations are derived. The PL …

The subset of galaxy–galaxy interactions which have resulted in a merger are, as a class,
ultraluminous IR galaxies. Their IR luminosities span a narrow range which overlaps with …

Seyfert galaxies ADS Classic is now deprecated. It will be completely retired in October 2019.
This page will automatically redirect to the new ADS interface at that point. SAO/NASA ADS …

Abstract The Ariel V Sky Survey Instrument has detected X-ray emission from 13 Seyfert
galaxies (11 of which have not been previously detected at X-ray wavelengths), bringing the …

We present homogeneous, standardized UBV (RI) C photometry for over 700 nearby stars
selected on the basis of Hipparcos parallaxes. Additionally, we list JHK photometry for about …

The basis for the current SAAO standard photometric system at JHKL is given. This depends
on an extensive investigation involving 230 stars distributed around the sky. The accuracy is …

This paper is based on UBVRIJHKLM magnitudes of about 700 O-and B-type stars obtained
from the literature. The mean intrinsic colours have been derived with the aid of two-colour …