Abstract
The transformation and evolution of a galaxy is strongly influenced by interactions with its environment. Neutral hydrogen (H i) is an excellent way to trace these interactions. Here, we present H i observations of the spiral galaxy NGC 895, which was previously thought to be isolated. High-sensitivity H i observations from the MeerKAT large survey project MIGHTEE reveal possible interaction features, such as extended spiral arms and the two newly discovered H i companions, that drive us to change the narrative that it is an isolated galaxy. We combine these observations with deep optical images from the Hyper Suprime Camera to show an absence of tidal debris between NGC 895 and its companions. We do find an excess of light in the outer parts of the companion galaxy MGTH$_$J022138.1-052631, which could be an indication of external perturbation and thus possible sign of interactions. Our analysis shows that NGC 895 is an actively star-forming galaxy with a SFR of 1.75 ± 0.09[M⊙/yr], a value typical for high-stellar mass galaxies on the star-forming main sequence. It is reasonable to state that different mechanisms may have contributed to the observed features in NGC 895, and this emphasizes the need to revisit the target with more detailed observations. Our work shows the high potential and synergy of using state-of-the-art data in both H i and optical to reveal a more complete picture of galaxy environments.
Original language | English |
---|---|
Article number | stad857 |
Pages (from-to) | 5177-5190 |
Number of pages | 14 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 521 |
Issue number | 4 |
Early online date | 23 Mar 2023 |
DOIs | |
Publication status | Published - Jun 2023 |
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In: Monthly Notices of the Royal Astronomical Society, Vol. 521, No. 4, stad857, 06.2023, p. 5177-5190.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - MIGHTEE-H i
T2 - possible interactions with the galaxy NGC 895
AU - Namumba, B.
AU - Román, J.
AU - Falcón-Barroso, J.
AU - Knapen, J. H.
AU - Ianjamasimanana, R.
AU - Naluminsa, E.
AU - Józsa, G. I.G.
AU - Korsaga, M.
AU - Maddox, N.
AU - Frank, B.
AU - Sikhosana, S.
AU - Legodi, S.
AU - Carignan, C.
AU - Ponomareva, A. A.
AU - Jarrett, T.
AU - Lucero, D.
AU - Smirnov, O. M.
AU - Van Der Hulst, J. M.
AU - Pisano, D. J.
AU - Malek, K.
AU - Marchetti, L.
AU - Vaccari, M.
AU - Jarvis, M.
AU - Baes, M.
AU - Meyer, M.
AU - Adams, E. A.K.
AU - Chen, H.
AU - Delhaize, J.
AU - Rajohnson, S. H.A.
AU - Kurapati, S.
AU - Heywood, I.
AU - Verdes-Montenegro, L.
N1 - Funding Information: The MeerKAT telescope is operated by the South African Radio Astronomy Observatory, which is a facility of the National Research F oundation, an agenc y of the Department of Science and Inno vation. BN’s research is supported by the South African Radio Astronomy Observatory (SARAO). We acknowledge the use of the ilifu cloud computing facility –www.ilifu.ac.za , a partnership between the Uni- versity of Cape Town, the University of the Western Cape, the Uni- versity of Stellenbosch, Sol Plaatje University, the Cape Peninsula University of Technology, and the South African Radio Astronomy Observatory. The Ilifu facility is supported by contributions from the Inter-University Institute for Data Intensive Astronomy (IDIA –a partnership between the University of Cape Town, the University of Pretoria, the University of the Western Cape, and the South African Radio astronomy Observatory), the Computational Biology division at UCT, and the Data Intensive Research Initiative of South Africa (DIRISA). BN acknowledges financial support from the Women by Science programme of the Fundaci ´on Mujeres por ´Africa, from the Gobierno de Canarias, and from the Instituto de Astrof ´ısica de Canarias (IAC). JR and JHK acknowledge support from the Spanish Ministry of Science and Innovation under the grant ‘The structure and evolution of galaxies and their central regions’ with reference PID2019-105602GB-I00/10.13039/501100011033, from the ACI- ISI, Consejer ´ıa de Econom ´ıa, Conocimiento y Empleo del Gobierno de Canarias and the European Regional Development Fund (ERDF) under grant with reference PROID2021010044, and from IAC project P/300724, financed by the Ministry of Science and Innovation, through the State Budget and by the Canary Islands Department of Economy, Knowledge and Employment, through the Regional Bud- get of the Autonomous Community. JR also acknowledges funding from University of La Laguna through the Margarita Salas Program from the Spanish Ministry of Universities ref. UNI/551/2021-May 26, and under the EU Next Generation. JFB acknowledges support through the RAVET project by the grant PID2019-107427GB-C32 from the Spanish Ministry of Science, Innovation and Universities (MCIU), and through the IAC project TRACES which is partially supported through the state budget and the regional budget of the Consejer ´ıa de Econom ´ıa, Industria, Comercio y Conocimiento of the Canary Islands Autonomous Community. RI acknowledges financial support from the grant CEX2021-001131-S funded by MCIN/AEI/10.13039/501100011033, from the grant IAA4SKA (Ref. R18-RT-3082) from the Economic Transformation, Industry, Knowledge and Universities Council of the Regional Government of Andalusia and the European Re gional Dev elopment Fund from the European Union and financial support from the grant PID2021- 123930OB-C21 funded by MCIN/AEI/10.13039/501100011033, by ‘ERDF A way of making Europe’ and by the ‘European Union’ and the Spanish Prototype of an SRC (SPSRC) service and support funded by the Spanish Ministry of Science and Innovation (MCIN), by the Regional Government of Andalusia and by the European Re gional Dev elopment Fund (ERDF). EN and THJ acknowledge support from the National Research Foundation (South Africa). OS’s research is supported by the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation (grant number 81737). LM and MV acknowledge finan- cial support from the Inter-University Institute for Data Intensive Astronomy (IDIA), a partnership of the University of Cape Town, the University of Pretoria, the University of the Western Cape and the South African Radio Astronomy Observatory, and from the South African Department of Science and Innovation’s National Research Foundation under the ISARP RADIOSKY2020 Joint Research Scheme (DSI-NRF Grant Number 113121) and the CSUR HIPPO Project (DSI-NRF Grant Number 121291). SHAR is supported by the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation. KM is grateful for support from the Polish National Science Centre via grant UMO-2018/30/E/ST9/00082. NM acknowledges support of the LMU Faculty of Physics. MJJ, IH, and AAP acknowledge support of the STFC consolidated grant [ST/S000488/1] and [ST/W000903/1], and MJJ and IH acknowledge support from a UKRI Frontiers Research Grant [EP/X026639/1]. MJJ also acknowledges support from the Oxford Hintze Centre for Astrophysical Surv e ys, which is funded through generous support from the Hintze Family Charitable Foundation. LVM acknowledges financial support from the grant SEV-2017-0709 funded by MCIN/AEI/ 10.13039/501100011033, from the grants RTI2018-096228-B-C31 and PID2021-123930OB- C21 funded by MCIN/AEI/ 10.13039/501100011033, by ‘ERDF A way of making Europe’ and by the ‘European Union’ and from the grant IAA4SKA (R18-RT-3082) funded by the Economic Transformation, Industry, Kno wledge and Uni versities Council of the Regional Government of Andalusia and the European Regional Development Fund from the European Union. Funding Information: The MeerKAT telescope is operated by the South African Radio Astronomy Observatory, which is a facility of the National Research Foundation, an agency of the Department of Science and Innovation. BN’s research is supported by the South African Radio Astronomy Observatory (SARAO). We acknowledge the use of the ilifu cloud computing facility – www.ilifu.ac.za , a partnership between the University of Cape Town, the University of the Western Cape, the University of Stellenbosch, Sol Plaatje University, the Cape Peninsula University of Technology, and the South African Radio Astronomy Observatory. The Ilifu facility is supported by contributions from the Inter-University Institute for Data Intensive Astronomy (IDIA – a partnership between the University of Cape Town, the University of Pretoria, the University of the Western Cape, and the South African Radio astronomy Observatory), the Computational Biology division at UCT, and the Data Intensive Research Initiative of South Africa (DIRISA). BN acknowledges financial support from the Women by Science programme of the Fundación Mujeres por África, from the Gobierno de Canarias, and from the Instituto de Astrofísica de Canarias (IAC). JR and JHK acknowledge support from the Spanish Ministry of Science and Innovation under the grant ‘The structure and evolution of galaxies and their central regions’ with reference PID2019-105602GB-I00/10.13039/501100011033, from the ACIISI, Consejería de Economía, Conocimiento y Empleo del Gobierno de Canarias and the European Regional Development Fund (ERDF) under grant with reference PROID2021010044, and from IAC project P/300724, financed by the Ministry of Science and Innovation, through the State Budget and by the Canary Islands Department of Economy, Knowledge and Employment, through the Regional Budget of the Autonomous Community. JR also acknowledges funding from University of La Laguna through the Margarita Salas Program from the Spanish Ministry of Universities ref. UNI/551/2021-May 26, and under the EU Next Generation. JFB acknowledges support through the RAVET project by the grant PID2019-107427GB-C32 from the Spanish Ministry of Science, Innovation and Universities (MCIU), and through the IAC project TRACES which is partially supported through the state budget and the regional budget of the Consejería de Economía, Industria, Comercio y Conocimiento of the Canary Islands Autonomous Community. RI acknowledges financial support from the grant CEX2021-001131-S funded by MCIN/AEI/10.13039/501100011033, from the grant IAA4SKA (Ref. R18-RT-3082) from the Economic Transformation, Industry, Knowledge and Universities Council of the Regional Government of Andalusia and the European Regional Development Fund from the European Union and financial support from the grant PID2021-123930OB-C21 funded by MCIN/AEI/10.13039/501100011033, by ‘ERDF A way of making Europe’ and by the ‘European Union’ and the Spanish Prototype of an SRC (SPSRC) service and support funded by the Spanish Ministry of Science and Innovation (MCIN), by the Regional Government of Andalusia and by the European Regional Development Fund (ERDF). EN and THJ acknowledge support from the National Research Foundation (South Africa). OS’s research is supported by the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation (grant number 81737). LM and MV acknowledge financial support from the Inter-University Institute for Data Intensive Astronomy (IDIA), a partnership of the University of Cape Town, the University of Pretoria, the University of the Western Cape and the South African Radio Astronomy Observatory, and from the South African Department of Science and Innovation’s National Research Foundation under the ISARP RADIOSKY2020 Joint Research Scheme (DSI-NRF Grant Number 113121) and the CSUR HIPPO Project (DSI-NRF Grant Number 121291). SHAR is supported by the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation. KM is grateful for support from the Polish National Science Centre via grant UMO-2018/30/E/ST9/00082. NM acknowledges support of the LMU Faculty of Physics. MJJ, IH, and AAP acknowledge support of the STFC consolidated grant [ST/S000488/1] and [ST/W000903/1], and MJJ and IH acknowledge support from a UKRI Frontiers Research Grant [EP/X026639/1]. MJJ also acknowledges support from the Oxford Hintze Centre for Astrophysical Surveys, which is funded through generous support from the Hintze Family Charitable Foundation. LVM acknowledges financial support from the grant SEV-2017-0709 funded by MCIN/AEI/ 10.13039/501100011033, from the grants RTI2018-096228-B-C31and PID2021-123930OB-C21 funded by MCIN/AEI/ 10.13039/501100011033, by ‘ERDF A way of making Europe’ and by the ‘European Union’ and from the grant IAA4SKA (R18-RT-3082) funded by the Economic Transformation, Industry, Knowledge and Universities Council of the Regional Government of Andalusia and the European Regional Development Fund from the European Union. Publisher Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2023/6
Y1 - 2023/6
N2 - The transformation and evolution of a galaxy is strongly influenced by interactions with its environment. Neutral hydrogen (H i) is an excellent way to trace these interactions. Here, we present H i observations of the spiral galaxy NGC 895, which was previously thought to be isolated. High-sensitivity H i observations from the MeerKAT large survey project MIGHTEE reveal possible interaction features, such as extended spiral arms and the two newly discovered H i companions, that drive us to change the narrative that it is an isolated galaxy. We combine these observations with deep optical images from the Hyper Suprime Camera to show an absence of tidal debris between NGC 895 and its companions. We do find an excess of light in the outer parts of the companion galaxy MGTH$_$J022138.1-052631, which could be an indication of external perturbation and thus possible sign of interactions. Our analysis shows that NGC 895 is an actively star-forming galaxy with a SFR of 1.75 ± 0.09[M⊙/yr], a value typical for high-stellar mass galaxies on the star-forming main sequence. It is reasonable to state that different mechanisms may have contributed to the observed features in NGC 895, and this emphasizes the need to revisit the target with more detailed observations. Our work shows the high potential and synergy of using state-of-the-art data in both H i and optical to reveal a more complete picture of galaxy environments.
AB - The transformation and evolution of a galaxy is strongly influenced by interactions with its environment. Neutral hydrogen (H i) is an excellent way to trace these interactions. Here, we present H i observations of the spiral galaxy NGC 895, which was previously thought to be isolated. High-sensitivity H i observations from the MeerKAT large survey project MIGHTEE reveal possible interaction features, such as extended spiral arms and the two newly discovered H i companions, that drive us to change the narrative that it is an isolated galaxy. We combine these observations with deep optical images from the Hyper Suprime Camera to show an absence of tidal debris between NGC 895 and its companions. We do find an excess of light in the outer parts of the companion galaxy MGTH$_$J022138.1-052631, which could be an indication of external perturbation and thus possible sign of interactions. Our analysis shows that NGC 895 is an actively star-forming galaxy with a SFR of 1.75 ± 0.09[M⊙/yr], a value typical for high-stellar mass galaxies on the star-forming main sequence. It is reasonable to state that different mechanisms may have contributed to the observed features in NGC 895, and this emphasizes the need to revisit the target with more detailed observations. Our work shows the high potential and synergy of using state-of-the-art data in both H i and optical to reveal a more complete picture of galaxy environments.
KW - galaxies: evolution
KW - galaxies: individual: NGC 895
KW - galaxies: interactions
UR - http://www.scopus.com/inward/record.url?scp=85154034983&partnerID=8YFLogxK
U2 - 10.1093/mnras/stad857
DO - 10.1093/mnras/stad857
M3 - Article
AN - SCOPUS:85154034983
SN - 0035-8711
VL - 521
SP - 5177
EP - 5190
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
M1 - stad857
ER -