Results 131 to 140 of about 1,020 (216)

Optical interstellar lines in dark clouds [PDF]

, 1973
Observations of the equivalent widths and radial velocities of the interstellar lines of Ca ii, Na i, CH, and CH^+ are presented for 30 stars. A special effort was made to observe stars behind or within dense clouds with up to 3 mag of absorption.
Cohen, Judith G.
core  

A Survey of Recent Interstellar Reddening Observations [PDF]

Monthly Notices of the Royal Astronomical Society, 1967
K. Nandy, N. C. Wickramasinghe
openaire   +1 more source

Photographic Photometry of NGC 6866

Journal of Mathematical and Fundamental Sciences, 2019
. Magnitudes and colors in the UBV photometric system have been determined for 575 stars in and around NGC 6866. The color-color relation of the cluster stars provides an estimate of interstellar reddening of 0.16 mag. The distance of cluster is found to
B. Hidajat, W. Sutantyo
doaj  

Observational Evidence of Dust Evolution in Supernova Remnants: Size Redistribution toward Larger Grains in the Early Sedov Phase

The Astrophysical Journal Letters
Recent observations have revealed that dust is widespread and abundant in galaxies up to z  ≃ 8, significantly influencing their appearance and spectral properties.
He Zhao, Bingqiu Chen, Jun Li
doaj   +1 more source

A radio-detected type Ia supernova with helium-rich circumstellar material. [PDF]

Nature, 2023
Kool EC, Johansson J, Sollerman J, Moldón J, Moriya TJ, Mattila S, Schulze S, Chomiuk L, Pérez-Torres M, Harris C, Lundqvist P, Graham M, Yang S, Perley DA, Strotjohann NL, Fremling C, Gal-Yam A, Lezmy J, Maguire K, Omand C, Smith M, Andreoni I, Bellm EC, Bloom JS, De K, Groom SL, Kasliwal MM, Masci FJ, Medford MS, Park S, Purdum J, Reynolds TM, Riddle R, Robert E, Ryder SD, Sharma Y, Stern D.   +36 more
europepmc   +1 more source

Connecting Dust and Outflows in Active Galactic Nuclei: The Intriguing Case of NGC 6860

The Astrophysical Journal
Cosmic dust plays a crucial role in the evolution of galaxies, significantly influencing star formation and the interstellar medium. However, in active galactic nuclei (AGNs), the role and origin of dust remain poorly understood.
I. Psaradaki, M. Mehdipour, D. Rogantini, E. Costantini, N. Schulz, S. Zeegers, E. Caruso   +6 more
doaj   +1 more source

New Electronic Transition of Ovalene in Solid <i>para</i>-H₂: The S₁-S₀ Transition with Its Origin at 19 400 cm^-1. [PDF]

J Phys Chem Lett
Weber I, Langner J, Witek HA, Lee YP.
europepmc   +1 more source

A large, long-lived, slowly-expanding superbubble across the Perseus arm. [PDF]

Nat Commun
Chen B, Li G, Yuan H, Xiang M, Zhou J, Chen P, Krause M, Coombs A.   +7 more
europepmc   +1 more source

The abundances of carbon and nitrogen in the atmospheres of classical Be stars. [PDF]

Astrophys Space Sci
Peters GJ, Gayley KG, Rast RG, Vink JS, Drake JJ.   +4 more
europepmc   +1 more source

Precision analysis of NGC 2158 with Gaia DR3. [PDF]

Sci Rep
Ahmed NM, Tadross AL.
europepmc   +1 more source