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Exploring the Evolution of Star Formation and Dwarf Galaxy Properties with JWST/MIRI Serendipitous Spectroscopic Surveys

Bonato, Matteo and Sajina, Anna and De Zotti, Gianfranco and McKinney, Jed and Baronchelli, Ivano and Negrello, Mattia and Marchesini, Danilo and Roebuck, Eric and Shipley, Heath and Kurinsky, Noah and Pope, Alexandra and Noriega-Crespo, Alberto and Yan, Lin and Kirkpatrick, Allison (2017) Exploring the Evolution of Star Formation and Dwarf Galaxy Properties with JWST/MIRI Serendipitous Spectroscopic Surveys. Astrophysical Journal, 836 (2). Art. No. 171. ISSN 1538-4357.

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The James Webb Space Telescope's Medium Resolution Spectrometer (MRS), will offer nearly two orders of magnitude improvement in sensitivity and > 3× improvement in spectral resolution over our previous space-based mid-IR spectrometer, the Spitzer IRS. In this paper, we make predictions for spectroscopic pointed observations and serendipitous detections with the MRS. Specifically, pointed observations of Herschel sources require only a few minutes on source integration for detections of several star-forming and active galactic nucleus lines, out to z = 3 and beyond. But the same data will also include tens of serendipitous 0 ≾ z ≾ 4 galaxies per field with infrared luminosities ranging ~10^6–10^(13) L_☉. In particular, for the first time and for free we will be able to explore the L_(IR) < 10^9 L_☉ regime out to z ~ 3. We estimate that with ~ 100 such fields, statistics of these detections will be sufficient to constrain the evolution of the low-L end of the infrared luminosity function, and hence the star formation rate function. The above conclusions hold for a wide range in the potential low-L end of the IR luminosity function, and account for the PAH deficit in low-L, low-metallicity galaxies.

Item Type:Article
Related URLs:
URLURL TypeDescription
Bonato, Matteo0000-0001-9139-2342
Sajina, Anna0000-0002-1917-1200
De Zotti, Gianfranco0000-0003-2868-2595
Baronchelli, Ivano0000-0003-0556-2929
Marchesini, Danilo0000-0001-9002-3502
Pope, Alexandra0000-0001-8592-2706
Noriega-Crespo, Alberto0000-0002-6296-8960
Yan, Lin0000-0003-1710-9339
Additional Information:© 2017. The American Astronomical Society. Received 2016 August 1; revised 2017 January 16; accepted 2017 January 24; published 2017 February 17. We thank Prof. George Rieke for helpful discussions. We are grateful to the anonymous referee for many constructive comments that helped us improve this paper. M.B. is supported by NASA-ADAP13-0054. A.S. and J.M. acknowledge support through NSF AAG#1313206. A.P. acknowledges support from NSF AAG #1312418. M.N. has received funding from the European Unions Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 707601.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Marie Curie Fellowship707601
Subject Keywords:galaxies: active; galaxies: evolution; galaxies: luminosity function, mass function; galaxies: starburst; infrared: galaxies
Issue or Number:2
Record Number:CaltechAUTHORS:20170407-134353540
Persistent URL:
Official Citation:Matteo Bonato et al 2017 ApJ 836 171
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75858
Deposited By: George Porter
Deposited On:07 Apr 2017 21:01
Last Modified:04 Nov 2019 02:21

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