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

THIS IS HAPPENING!

http://sdss.org/futureKollmeier et al. 1711.03234

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