RT journal article
T1 Narrow absorption lines from intervening material in supernovae: II. Galaxy properties
A1 González Gaitán, Santiago
A1 Gutiérrez, C.P.
A1 Martins, G.
A1 Müller-Bravo, T.E.
A1 Duarte, J.
A1 Anderson, Joseph P.
A1 Galbany, Lluis
A1 Sullivan, Mark
A1 Rino-Silvestre, J.
A1 Caixach Martí, Mariona
A1 Morales Garoffolo, Antonia Isabel
A1 Goswami, Sabyasachi
A1 Mourão, Ana M.
A1 Mattila, Seppo
A2 Física Aplicada
K1 Dust
K1 extinction
K1 ISM
K1 lines and bands
K1 Supernovae
K1 general
AB The interstellar medium (ISM) has a number of tracers such as the NaI Dλλ 5890, 5896 absorption lines that are evident in the spectra of galaxies but also in those of individual astrophysical sources such as stars, novae, or quasars. Here, we investigate narrow absorption features in the spectra of nearby supernovae (SNe) and compare them to local (<0.5 kpc) and global host galaxy properties. With a large and heterogeneous sample of spectra, we are able to recover the known relations of ISM with galaxy properties: larger columns of ISM gas are found in environments that are more massive, more actively star-forming, younger, and viewed from a more inclined angle. Most trends are stronger for local properties than global properties, and we find that the ISM column density decreases exponentially with the offset from the host galaxy centre, as expected for a gas distribution following an exponential radial profile. We also confirm trends for the velocity of galactic outflows increasing with radius. The current study demonstrates the capability of individual light sources to serve as ubiquitous tracers of ISM properties across various environments and galaxies.
PB EDP Sciences
SN 1432-0746
YR 2025
FD 2025
LK http://hdl.handle.net/10498/38658
UL http://hdl.handle.net/10498/38658
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 22-sep-2026