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Title: Outlying Hα emitters in SDSS IV MaNGA

Abstract

We have carried out a systematic search for outlying Hα emitters in the entire Data Release 14 of the Sloan Digital Sky Survey (SDSS) IV Mapping Nearby Galaxies at APO (MaNGA) survey. We have discovered six outlying Hα emitters with no bright underlying optical continuum emission in the imaging Data Release 5 from the Dark Energy Camera Legacy Survey (DECaLS) and Data Release 6 of the Mayall z-band Legacy Survey (MzLS) + Beijing–Arizona Sky Survey (BASS). They also show a velocity field that is different from that of the host galaxy. These outlying Hα emitters all have extended structure in the Hα image. Their emission line ratios show that they are photoionized due to an active galactic nucleus (AGN) or a mixture of both an AGN and star formation. Finally, some of them are very likely to be fainter counterparts of Hanny’s Voorwerp-like objects.

Authors:
ORCiD logo [1];  [1];  [2]
  1. National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Post Bag 3, Ganeshkhind, Pune 411 007, India
  2. Indian Institute of Astrophysics (IIA), II Block, Koramangala, Bengaluru 560 034, India
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC); Alfred P. Sloan Foundation
OSTI Identifier:
1495619
Alternate Identifier(s):
OSTI ID: 1527377
Grant/Contract Number:  
AST-0950945
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 485 Journal Issue: 1; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United Kingdom
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: active; galaxies: evolution; galaxies: general; galaxies: star formation; galaxies: statistics

Citation Formats

Bait, Omkar, Wadadekar, Yogesh, and Barway, Sudhanshu. Outlying Hα emitters in SDSS IV MaNGA. United Kingdom: N. p., 2019. Web. doi:10.1093/mnras/stz433.
Bait, Omkar, Wadadekar, Yogesh, & Barway, Sudhanshu. Outlying Hα emitters in SDSS IV MaNGA. United Kingdom. doi:10.1093/mnras/stz433.
Bait, Omkar, Wadadekar, Yogesh, and Barway, Sudhanshu. Wed . "Outlying Hα emitters in SDSS IV MaNGA". United Kingdom. doi:10.1093/mnras/stz433.
@article{osti_1495619,
title = {Outlying Hα emitters in SDSS IV MaNGA},
author = {Bait, Omkar and Wadadekar, Yogesh and Barway, Sudhanshu},
abstractNote = {We have carried out a systematic search for outlying Hα emitters in the entire Data Release 14 of the Sloan Digital Sky Survey (SDSS) IV Mapping Nearby Galaxies at APO (MaNGA) survey. We have discovered six outlying Hα emitters with no bright underlying optical continuum emission in the imaging Data Release 5 from the Dark Energy Camera Legacy Survey (DECaLS) and Data Release 6 of the Mayall z-band Legacy Survey (MzLS) + Beijing–Arizona Sky Survey (BASS). They also show a velocity field that is different from that of the host galaxy. These outlying Hα emitters all have extended structure in the Hα image. Their emission line ratios show that they are photoionized due to an active galactic nucleus (AGN) or a mixture of both an AGN and star formation. Finally, some of them are very likely to be fainter counterparts of Hanny’s Voorwerp-like objects.},
doi = {10.1093/mnras/stz433},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 485,
place = {United Kingdom},
year = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1093/mnras/stz433

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