Measurement of the extragalactic background light at 8600Å using dark cloud shadow and the CaII-triplet lines

Abstract

We present results of a measurement of the near infrared Extragalactic Background Light using the dark-cloud method. Long-slit spectra covering the opaque core of the intermediate--latitude globule DC303.8-14.2 and the almost unobscured off area were measured using nodding-along-the-slit measuring technique providing a differential spectrum free of most of the foreground components. A template for the only remaining major foreground component, the scattered integrated starlight dominated by the strong Ca II triplet lines at 8498, 8542, 8664$\mathring{A}$, from the dark core itself was constructed using the GAIA RVS spectral database. The derived EBL intensity is $1.62\pm 0.76({\sigma }_{stat})10^{-9}ergc{m}^{-2}{s}^{-1}{\mathring{A}}^{-1}s{r}^{-1}$ or $13.8\pm 6.5({\sigma }_{stat})$nW m${}^{-2}$sr${}^{-1}$; this represents a tentative detection at $2.1\sigma$, level.

Accepted for publication in Astronomy and Astrophysics. 14 pages, 10 figures and 5 tables. Second submission after language-editing

References in corpus (25)

• Stellar population synthesis at the resolution of 2003
• The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: I. Limits and Detections
• STELIB: a library of stellar spectra at R~2000
• On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy
• A $\gamma$-ray determination of the Universe's star-formation history
• Extra-galactic background light measurements from the far-UV to the far-IR from deep ground and space-based galaxy counts
• Detection of Extended Red Emisson in the Diffuse Interstellar Medium
• New Spectral Evidence of an Unaccounted Component of the Near-infrared Extragalactic Background Light from the CIBER
• Anomalous Flux in the Cosmic Optical Background Detected With New Horizons Observations
• New Horizons Observations of the Cosmic Optical Background
• Measurement of the Cosmic Optical Background using the Long Range Reconnaissance Imager on New Horizons
• Comments on ``The first detections of the Extragalactic Background Light at 3000, 5500, and 8000 A'' by Bernstein, Freedman and Madore
• Extragalactic background Light: a measurement at 400 nm using dark cloud shadow II. Spectroscopic separation of dark cloud's light, and results
• GAMA/DEVILS: Constraining the cosmic star-formation history from improved measurements of the 0.3-2.2 micron Extragalactic Background Light
• A Measurement of the Cosmic Optical Background and Diffuse Galactic Light Scaling from the R < 50 AU New Horizons-LORRI Data
• SRG/eROSITA X-ray shadowing study of giant molecular clouds
• Extended Red Emission: Observational constraints for models
• A comparison of density structures of a star forming and a non-star-forming globule. DCld303.8-14.2 and Thumbprint Nebula
• Measurements of the Zodiacal Light Absolute Intensity through Fraunhofer Absorption Line Spectroscopy with CIBER
• Corrections of Errors in `The First Detections of the Extragalactic Background Light at 3000, 5500, and 8000 Å. I, II, and III'
• Extragalactic Background Light: a measurement at 400 nm using dark cloud shadow I. Low surface brightness spectrophotometry in the area of Lynds 1642
• Dust properties of the cometary globule Barnard 207 (LDN 1489)
• Spectroscopy of diffuse light in dust clouds. Scattered light and the solar neighbourhood radiation field
• Optical and UV surface brightness of translucent dark nebulae: Dust albedo, radiation field and fluorescence emission by H2
• Diffuse Dark and Bright Objects in the Hubble Deep Field