Optical and Near-IR Field Luminosity Functions
نویسنده
چکیده
We present preliminary measurements of the bJ and K-band luminosity functions (LFs) of field galaxies obtained from optical and Kband imaging of a sample of galaxies selected from the Stromlo-APM Redshift Survey. The bJ LF is consistent with that previously published from photographic data. TheK-band LF has been estimated over a range of 12 magnitudes and is reasonably well fit by a Schechter function with faint-end slope α = −1.2.
منابع مشابه
Age and Metallicity Distribution of the Galactic Bulge from Extensive Optical and Near-IR Stellar Photometry
We present a new determination of the metallicity distribution, age, and luminosity function of the Galactic bulge stellar population. By combining near-IR data from the 2MASS survey, from the SOFI imager at ESO NTT and the NICMOS camera on board HST we were able to construct color-magnitude diagrams (CMD) and luminosity functions (LF) with large statistics and small photometric errors from the...
متن کاملUncovering the Near-ir Dwarf Galaxy Population of the Coma Cluster with Spitzer Irac
We present the first results of a Spitzer IRAC (Infrared Array Camera) wide-field survey of the Coma cluster. The observations cover two fields; the first is a 0.733 deg region in the core of the cluster (Coma 1), the second a 0.555 deg off-center region located ∼57′ (1.7 Mpc) south-west from the core (Coma 3). The IRAC observations, although short 70-90 s exposures, are very sensitive; we dete...
متن کاملA Large Population of Mid-infrared Selected, Obscured Active Galaxies in the Boötes Field
We identify a population of 640 obscured and 839 unobscured active galactic nuclei (AGNs) at redshifts 0.7 < z . 3 using multiwavelength observations of the 9 deg2 NOAO Deep Wide-Field Survey (NDWFS) region in Boötes. We select AGNs on the basis of Spitzer Infrared Array Camera (IRAC) colors obtained by the IRAC Shallow Survey. Redshifts are obtained from optical spectroscopy or photometric red...
متن کاملAn R-process Kilonova Associated with the Short-hard Grb 130603b an R-process Kilonova Associated with the Short-hard Grb 130603b
We present ground-based optical and Hubble Space Telescope optical and near-IR observations of the shorthard GRB 130603B at z = 0.356, which demonstrate the presence of excess near-IR emission matching the expected brightness and color of an r-process powered transient (a “kilonova”). The early afterglow fades rapidly with α . −2.6 at t ≈ 8 − 32 hr post-burst and has a spectral index of β ≈ −1....
متن کاملAn R - Process Kilonova Associated With the Short - Hard Grb
We present ground-based optical and Hubble Space Telescope optical and near-IR observations of the shorthard GRB 130603B at z = 0.356, which demonstrate the presence of excess near-IR emission matching the expected brightness and color of an r-process powered transient (a “kilonova”). The early afterglow fades rapidly with α . −2.6 at t ≈ 8 − 32 hr post-burst and has a spectral index of β ≈ −1....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998