We present late-epoch optical photometry (BVRI) of seven normal/superluminous Type Ia supernovae: SN 2000E, SN 2000ce, SN 2000cx, SN 2001C, SN 2001V, SN 2001bg, SN 2001dp. The photometry of these objects was obtained using a template subtraction method to eliminate galaxy light contamination during aperture photometry. We show the optical light curves of these supernovae out to epochs of up to ...

We demonstrate that the combination of GALEX ultraviolet (UV) photometry in the far-UV (FUV; ∼1530 Å) and near-UV (NUV; ∼2310 Å) passbands with optical photometry in the standard U, B, V, R, I filters can efficiently break the age–metallicity degeneracy. We estimate well-constrained ages, metallicities and their associated errors for 42 globular clusters (GCs) in M31, and show that the full set...

We have analysed new R-band photometry of globular clusters in NGC 6166, the cD galaxy in the cooling flow cluster A2199. In combination with the earlier B photometry of Pritchet & Harris (1990), we obtain B−R colours for ∼ 40 globular clusters in NGC 6166. The mean B−R is 1.26 ± 0.11, corresponding to a mean [Fe/H] = −1 ± 0.4. Given that NGC 6166 is one of the most luminous cD galaxies studied...

Four-color and photometry has been obtained for 22 stars in the field of the open cluster NGC 129. Based on this photometry, the membership of these stars in the cluster is discussed and it is found that many are field stars. The color excesses for cluster members obtained here range from E(b y) = 0.207 to 0.513 and are larger than those found from previous UBV photometry. It has been suggested...

Received ; accepted – 2 – ABSTRACT We present 5 filter photometry of 21 carbon stars, 15 asteroids, 15 cataclysmic variables, 6 metal-poor stars, 5 Cepheids, 1775 field stars, blue horizontal branch (BHB) stars and RR Lyrae stars in the globular clusters M 15 and M 2, two primary standards, and 19 secondary standards. The photometry was carried out using a filter set identical to that which wil...

We present photometry in the J and K near-infrared bands for two regions centered on the young open clusters NGC 1893 and Berkeley 86. We study 700 stars down to K = 17 in the field of NGC 1893, and about 2000 stars in the field of Berkeley 86 down to K∼ 16.5, for which near-infrared photometry was insofar not available. Coupling J-K data with UBV photometry taken from literature, we produce re...

The value of absorption of light energy is dependent on the number of molecules present in absorbing material and the thickness of the medium. Thus, intensity of light energy leaving the absorbing substance is used as an indication of concentration of that particular substance. If the thickness i.e. path length of the light energy in the sample holder, normally the flow through cell and intensi...

Context. IGR J09026−4812 was discovered by INTEGRAL in 2006 as a new hard X-ray source. Thereafter, an observation with Chandra pinpointed a single X-ray source within the ISGRI error circle, showing a hard spectrum, and improving its high-energy localisation to a subarcsecond accuracy. Thus, the X-ray source was associated to the infrared counterpart 2MASS J09023731−4813339 whose JHKS photomet...

We present catalogs of QSO candidates selected using photometry from GALEX combined with SDSS in the Stripe 82 region and Blanco Cosmology Survey (BCS) near declination −55 degrees. The SDSS region contains ≃ 700 objects with magnitude i < 20 and ≃ 3600 objects with i < 21.5 in a ≃ 60 square degree sky region, while the BCS region contains ≃ 280 objects with magnitude i < 20 and ∼ 2000 objects ...