A Caltech Library Service

The Star Formation Rate of the Milky Way as Seen by Herschel

Elia, D. and Molinari, S. and Schisano, E. and Soler, J. D. and Merello, M. and Russeil, D. and Veneziani, M. and Zavagno, A. and Noriega-Crespo, A. and Olmi, L. and Benedettini, M. and Hennebelle, P. and Klessen, R. S. and Leurini, S. and Paladini, R. and Pezzuto, S. and Traficante, A. and Eden, D. J. and Martin, P. G. and Sormani, M. and Coletta, A. and Colman, T. and Plume, R. and Maruccia, Y. and Mininni, C. and Liu, S. J. (2022) The Star Formation Rate of the Milky Way as Seen by Herschel. Astrophysical Journal, 941 (2). Art. No. 162. ISSN 0004-637X. doi:10.3847/1538-4357/aca27d.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


We present a new derivation of the Milky Way's current star formation rate (SFR) based on the data of the Herschel InfraRed Galactic Plane Survey (Hi-GAL). We estimate the distribution of the SFR across the Galactic plane from the star-forming clumps identified in the Hi-GAL survey and calculate the total SFR from the sum of their contributions. The estimate of the global SFR amounts to 2.0 ± 0.7 M_⊙ yr⁻¹, of which 1.7 ± 0.6 M_⊙ yr⁻¹ coming from clumps with reliable heliocentric distance assignment. This value is in general agreement with estimates found in the literature of last decades. The profile of SFR density averaged in Galactocentric rings is found to be qualitatively similar to others previously computed, with a peak corresponding to the Central Molecular Zone and another one around Galactocentric radius R_gal ∼ 5 kpc, followed by an exponential decrease as log(Σ_(SFR)/[M_⊙ yr⁻¹ kpc⁻²]) = a R_gal/[kpc] +b, with a = −0.28 ± 0.01. In this regard, the fraction of SFR produced within and outside the solar circle is 84% and 16%, respectively; the fraction corresponding to the far outer Galaxy (R_gal > 13.5 kpc) is only 1%. We also find that, for R_gal > 3 kpc, our data follow a power law as a function of density, similarly to the Kennicutt–Schmidt relation. Finally, we compare the distribution of the SFR density across the face-on Galactic plane and those of median parameters, such as temperature, luminosity/mass ratio, and bolometric temperature, describing the evolutionary stage of Hi-GAL clumps. We found no clear correlation between the SFR and the clump evolutionary stage.

Item Type:Article
Related URLs:
URLURL TypeDescription
Elia, D.0000-0002-9120-5890
Molinari, S.0000-0002-9826-7525
Schisano, E.0000-0003-1560-3958
Soler, J. D.0000-0002-0294-4465
Merello, M.0000-0003-0709-708X
Russeil, D.0000-0001-5400-7214
Zavagno, A.0000-0001-9509-7316
Noriega-Crespo, A.0000-0002-6296-8960
Olmi, L.0000-0002-1162-7947
Benedettini, M.0000-0002-3597-7263
Hennebelle, P.0000-0002-0472-7202
Klessen, R. S.0000-0002-0560-3172
Leurini, S.0000-0003-1014-3390
Paladini, R.0000-0002-5158-243X
Pezzuto, S.0000-0001-7852-1971
Traficante, A.0000-0003-1665-6402
Eden, D. J.0000-0002-5881-3229
Martin, P. G.0000-0002-5236-3896
Sormani, M.0000-0001-6113-6241
Coletta, A.0000-0001-8239-8304
Colman, T.0000-0002-2636-4377
Plume, R.0000-0002-6482-8945
Maruccia, Y.0000-0003-1975-6310
Mininni, C.0000-0002-2974-4703
Liu, S. J.0000-0001-7680-2139
Additional Information:This research has received funding from the INAF Mainstream Grant "The ultimate exploitation of the Hi-GAL archive and ancillary infrared/mm data" (, and from the European Research Council synergy grant ECOGAL (grant No. 855130). S.L. acknowledges support by the INAF PRIN 2019 grant ONSET. A.Z. thanks the support of the Institut Universitaire de France.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Istituto Nazionale di Astrofisica (INAF)
European Research Council (ERC)855130
Institut Universitaire de France (IUF)UNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20230105-911538600.8
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118745
Deposited By: Research Services Depository
Deposited On:08 Feb 2023 02:20
Last Modified:08 Feb 2023 02:22

Repository Staff Only: item control page