2 hemispheres w 10 spectrographs w 6,000,000 objects 2020-2025
V Pioneering Panoptic Spectroscopy
http://sdss.org/futureKollmeier et al. 1711.03234
The Science of
Juna Kollmeier, Carnegie Observatories
ASTRO LANDSCAPE 2020-2025
—Time Domain Astronomy—Big Data Science in Astrophysics—Stellar Astrophysics Revolution—Gravitational Wave Astronomy
TARGET BRIGHT UNIVERSE
SDSS-V• 5-year program beginning
mid-2020 in both hemispheres
• 3 Science Programs:
• Milky Way Mapper, Black Hole Mapper, Local Volume Mapper
• 2 hemispheres: high-res IR spectra, moderate-res optical spectra + O echelle, massively multiplexed wide-field IFU
Credit M. SeibertNSF DOES NOT DIRECTLY SUPPORT SDSS-IV or
SDSS-V! THAT IS WRONG!
SCIENCE! 2020
• The Milky Way & Its Stars & Their Planets
• The Black Holes
• The Interstellar Medium
MWM: The Physics of Stars and The Galaxy
Galactic Genesis Stellar Astrophysics & Stellar System ArchitectureYoung Stellar Objects
STELLAR AGES!Ages fromasteroseismology,precision photometry,gyrochronology +SDSS-V Spectroscopy!
From M. Ness et al. 2016
Galactic Archaeology: 2020
Chemical tagging —> large sample size
Pairs of birth sibling stars are rare, but the number of such pairs in a survey of sample size N, will scale as N2!!!!
SDSS-V
Current State of the Art with APOGEE
Milky Way Model A Milky Way Model B
As Sampled in SDSS-V
Milky Way “Model A” Mark Rothko Orange and Yellow
Milky Way Model B Jean-Michel Basquiat Untitled
SDSS-V will tell us which Milky Way we live in!
Juna Kollmeier, Carnegie Observatories
THE MAKING OF THE MILKY WAY:GALACTIC GENESIS
Chemodynamical mapping of the Milky Way and its Dust. Roughly 6 million stars. Shorter exposures of brighter (H<11) stars to enable contiguous full sky coverage
Exploiting advances in Data Science from SDSS-IV and stellar physics from time-domain surveys (e.g. asteroseismology, TDA)
100-x improvement over State-of-the Art!
BHM: The Physics of Black Hole Growth
Time Domain QSO Spectroscopy: “Changing Look”
BEYOND UNIFICATION
X. Bai
Urry & Padovani
0h00
6h00
12h0
012h00 18h0
0
- 9 0
- 6 0 - 6 0
- 3 0 - 3 0
3 0 3 0
6 0 6 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
100
eRAS
S:3
SPID
ERS
Den
sity
(AG
N+C
lust
ers)
(i<2
1.5)
Estimated eRASS:3 source density in DE half of sky, after 3 eROSITA all-sky scans completed about 1.5 years into mission.
ALL-SKY X-RAYS: EROSITA!
LVM: The Physics of the ISM at the Energy Injection Scale
Southern Milky-Way Survey& Magellanic Clouds Survey
(0.1 - 10 pc resolution)
NorthernMilky-Way Survey
(0.1 - 10 pc resolution)
Northern Local Group Survey(0.8 Mpc @ ~23 pc resolution)
Northern Local Volume Survey
(0.75 - 8 Mpc @ 8 - 96 pc resolution)
Southern Local Volume Survey
(1 - 5 Mpc @11 - 56 pc resolution)
APO
LCO
1.0 m
0.16 m
0.16 m 2.5 m
2.5 m
Eagle, FIRE, Illustris TNG
“Feedback”: Beyond the Galaxy Stellar Mass Function!
Juna Kollmeier, Carnegie Observatories
ZOOMING INTO NEARBY GALAXIES
Very High-spatial-resolution (1-50pc) integral field spectroscopy of nearby galaxies including the MW, M31, M33, and the Magellanic Clouds, with a major investment in new DESI-style optical spectrographs to enable two 1600-fiber integral field units (one in each hemisphere)
Insight into galaxy formation and interface with theoretical models by high-res mapping
Orion• M42 0.07 pc / spaxel
• APOGEE stars (yellow)
• Combine information from gas and stars to map the interaction between stars and ISM
• Have Teff, L, Z, [X/H], fuv, (age) for each star
• Gas: temperature, density, kinematics, abundances
Images: ESO 2.2m
BASELINE LVM TARGETS
IS YOUR FAVORITE ON THIS LIST?
TRANSIENTS!
B. Penpraese
Rapid reconfiguration
(SLOAN-BOTS!)
Full Sky coverage
O/IR
Perfect complement to
an extended ZTF, LSST, and future IR sky surveys
CRTS
Juna Kollmeier, Carnegie Observatories JOIN US.