The SDSS-V Local Volume Mapper (LVM): Scientific Motivation and Project Overview
Abstract
We present the Sloan Digital Sky Survey V (SDSS-V) Local Volume Mapper (LVM). The LVM is an integral-field spectroscopic survey of the Milky Way, Magellanic Clouds, and of a sample of local volume galaxies, connecting resolved pc-scale individual sources of feedback to kpc-scale ionized interstellar medium (ISM) properties. The 4-year survey covers the southern Milky Way disk at spatial resolutions of 0.05 to 1 pc, the Magellanic Clouds at 10 pc resolution, and nearby large galaxies at larger scales totaling square degrees of sky, and more than 55M spectra. It utilizes a new facility of alt-alt mounted siderostats feeding 16 cm refractive telescopes, lenslet-coupled fiber-optics, and spectrographs covering 3600-9800A at R ~ 4000. The ultra-wide field IFU has a diameter of 0.5 degrees with 1801 hexagonally packed fibers of 35.3 arcsec apertures. The siderostats allow for a completely stationary fiber system, avoiding instability of the line spread function seen in traditional fiber feeds. Scientifically, LVM resolves the regions where energy, momentum, and chemical elements are injected into the ISM at the scale of gas clouds, while simultaneously charting where energy is being dissipated (via cooling, shocks, turbulence, bulk flows, etc.) to global scales. This combined local and global view enables us to constrain physical processes regulating how stellar feedback operates and couples to galactic kinematics and disk-scale structures, such as the bar and spiral arms, as well as gas in- and out-flows.
Keywords
Cite
@article{arxiv.2405.01637,
title = {The SDSS-V Local Volume Mapper (LVM): Scientific Motivation and Project Overview},
author = {Niv Drory and Guillermo A. Blanc and Kathryn Kreckel and Sebastian F. Sanchez and Alfredo Mejia-Narvaez and Evelyn J. Johnston and Amy M. Jones and Eric W. Pellegrini and Nicholas P. Konidaris and Tom Herbst and Jose Sanchez-Gallego and Juna A. Kollmeier and Florence de Almeida and Jorge K. Barrera-Ballesteros and Dmitry Bizyaev and Joel R. Brownstein and Mar Canal i Saguer and Brian Cherinka and Maria-Rosa L. Cioni and Enrico Congiu and Maren Cosens and Bruno Dias and John Donor and Oleg Egorov and Evgeniia Egorova and Cynthia S. Froning and Pablo Garcia and Simon C. O. Glover and Hannah Greve and Maximilian Haeberle and Kevin Hoy and Hector Ibarra and Jing Li and Ralf S. Klessen and Dhanesh Krishnarao and Nimisha Kumari and Knox S. Long and Jose Eduardo Mendez-Delgado and Silvia Anastasia Popa and Solange Ramirez and Hans-Walter Rix and Aurora Mata Sanchez and Ravi Sankrit and Natascha Sattler and Conor Sayres and Amrita Singh and Guy Stringfellow and Stefanie Wachter and Elizabeth Jayne Watkins and Tony Wong and Aida Wofford},
journal= {arXiv preprint arXiv:2405.01637},
year = {2024}
}
Comments
29 pages, 12 figures, accepted for publication in The Astronomical Journal