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Using over a million and a half extragalactic spectra we study the correlations of the Diffuse Interstellar Bands (DIBs) in the Milky Way. We measure the correlation between DIB strength and dust extinction for 142 DIBs using 24 stacked…

Astrophysics of Galaxies · Physics 2015-08-06 Dalya Baron , Dovi Poznanski , Darach Watson , Yushu Yao , Nick L. J. Cox , J. Xavier Prochaska

We map the distribution and properties of the Milky Way's interstellar medium as traced by diffuse interstellar bands (DIBs) detected in near-infrared stellar spectra from the SDSS-III/APOGEE survey. Focusing exclusively on the strongest…

Diffuse interstellar bands (DIBs) have been discovered for almost a century, but their nature remains one of the most challenging problems in astronomical spectroscopy. Most recent work to identify and investigate the properties and…

Solar and Stellar Astrophysics · Physics 2015-06-05 Haibo Yuan , Xiaowei Liu

We use star, galaxy and quasar spectra taken by the Sloan Digital Sky Survey to map out the distribution of diffuse interstellar bands (DIBs) induced by the Milky Way. We show that, after carefully removing the intrinsic spectral energy…

Astrophysics of Galaxies · Physics 2015-08-10 Ting-Wen Lan , Brice Ménard , Guangtun Zhu

ABRIDGED: Diffuse interstellar bands (DIBs) are faint spectral absorption features of unknown origin. Research on DIBs beyond the Local Group (LG) will surely blossom in the era of the ELTs. A possibility that needs to be explored is the…

Astrophysics of Galaxies · Physics 2018-07-18 Ana Monreal-Ibero , Peter M. Weilbacher , Martin Wendt

The diffuse interstellar bands (DIBs) are absorption lines observed in visual and near infrared spectra of stars. Understanding their origin in the interstellar medium (ISM) is one of the oldest problems in astronomical spectroscopy, as…

Diffuse Interstellar Bands (DIBs) are non-stellar weak absorption features of unknown origin found in the spectra of stars viewed through one or several clouds of Interstellar Medium (ISM). Research of DIBs outside the Milky Way is…

Diffuse interstellar bands (DIBs) hold a lot of information about the state and the structure of the ISM. Structure can most directly be observed by extensive spectroscopic surveys, including surveys of stars where DIBs are especially…

Astrophysics of Galaxies · Physics 2017-05-10 Janez Kos

We used 3D maps of 862nm DIB equivalent width (EW) and extinction, DIB catalogues, and measured parameters of dust extinction law and dust emission to study relationships between DIB and extinction level, total-to-selective extinction ratio…

Astrophysics of Galaxies · Physics 2024-10-30 R. Lallement , J. L. Vergely , N. L. J. Cox

Diffuse interstellar bands (DIBs) can trace different conditions of the ISM along the sightline toward the observed stars. A small survey was made in optical wavelengths, producing high resolution and high signal to noise spectra. We…

Astrophysics of Galaxies · Physics 2015-06-16 J. Kos , T. Zwitter

Diffuse interstellar bands (DIBs) are broad absorption features measured in sightlines probing the diffuse interstellar medium. Although large carbon-bearing molecules have been proposed as the carriers producing DIBs, their identity…

Astrophysics of Galaxies · Physics 2018-12-05 M. C. Ramírez-Tannus , N. L. J. Cox , L. Kaper , A. de Koter

We report the detection of the Diffuse Interstellar Bands (``$DIBs$'') in the optical spectra of seven far-infrared-selected starburst galaxies. The $\lambda$6283.9 \AA and $\lambda$ 5780.5 \AA features are detected with equivalent widths…

Astrophysics · Physics 2009-10-31 Timothy M. Heckman , Matthew D. Lehnert

A large number of interstellar absorption features at ~ 4000\AA\ -- 1.8 {\mu}m, known as the "diffuse interstellar bands" (DIBs), remains unidentified. Most recent works relate them to large polycyclic aromatic hydrocarbon (PAH) molecules…

Astrophysics of Galaxies · Physics 2017-01-25 F. Y. Xiang , Aigen Li , J. X. Zhong

The spectrum of any star viewed through a sufficient quantity of diffuse interstellar material reveals a number of absorption features collectively called diffuse interstellar bands (DIBs). The first DIBs were reported 90 years ago, and…

Astrophysics of Galaxies · Physics 2015-06-03 T. R. Geballe , F. Najarro , D. F. Figer , B. W. Schlegelmilch , D. de la Fuente

Diffuse interstellar bands (DIBs) are common interstellar absorption features in spectroscopic observations but their origins remain unclear. DIBs play an important role in the life cycle of the interstellar medium (ISM) and can also be…

The carriers of the still (mostly) unidentified diffuse interstellar bands (DIBs) have been a long-standing mystery ever since their first discovery exactly 100 years ago. In recent years, the ubiquitous detection of a large number of DIBs…

Astrophysics of Galaxies · Physics 2019-10-02 Kaijun Li , Aigen Li , F. Y. Xiang

The Diffuse Interstellar Bands (DIBs) are absorption features seen in the spectra of astronomical objects, that arise in the interstellar medium. Today more than 500 DIBs have been observed mostly in the optical and near-infrared…

Astrophysics of Galaxies · Physics 2021-12-11 Leander Schlarmann , Bernard Foing , Jan Cami , Haoyu Fan

Understanding variations in the dust extinction curve is imperative for using dust as a tracer of local structure in the interstellar medium, understanding dust chemistry, and observational color corrections where dust is a nuisance…

Astrophysics of Galaxies · Physics 2025-07-11 Andrew K. Saydjari , Gregory M. Green

We present high-resolution echelle spectroscopic observations of the two near- infrared (NIR) Diffuse Interstellar Bands (DIBs) at 13175 A and 11797.5 A. The DIBs have been observed in a number of diffuse interstellar medium sightlines that…

Astrophysics of Galaxies · Physics 2015-06-23 M. G. Rawlings , A. J. Adamson , T. H. Kerr

Although diffuse interstellar bands (DIBs) were discovered over 100 years ago, for most of them, their origins are still unknown. Investigation on the correlations between different DIBs is an important way to study the behavior and…

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