Asteroid measurements at millimeter wavelengths with the South Pole telescope
We present the first measurements of asteroids in millimeter wavelength data from the South Pole Telescope (SPT), which is used primarily to study the cosmic microwave background (CMB). We analyze maps of two ∼270 deg2 sky regions near the ecliptic plane, each observed with the SPTpol camera ∼100 ti...
Published in: | The Astrophysical Journal |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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American Astronomical Society
2022
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Subjects: | |
Online Access: | https://orca.cardiff.ac.uk/id/eprint/152554/ https://doi.org/10.3847/1538-4357/ac89ec https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
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English |
description |
We present the first measurements of asteroids in millimeter wavelength data from the South Pole Telescope (SPT), which is used primarily to study the cosmic microwave background (CMB). We analyze maps of two ∼270 deg2 sky regions near the ecliptic plane, each observed with the SPTpol camera ∼100 times over 1 month. We subtract the mean of all maps of a given field, removing static sky signal, and then average the mean-subtracted maps at known asteroid locations. We detect three asteroids—(324) Bamberga, (13) Egeria, and (22) Kalliope—with signal-to-noise ratios (S/N) of 11.2, 10.4, and 6.1, respectively, at 2.0 mm (150 GHz); we also detect (324) Bamberga with an S/N of 4.1 at 3.2 mm (95 GHz). We place constraints on these asteroids’ effective emissivities, brightness temperatures, and light-curve modulation amplitude. Our flux density measurements of (324) Bamberga and (13) Egeria roughly agree with predictions, while our measurements of (22) Kalliope suggest lower flux, corresponding to effective emissivities of 0.64 ± 0.11 at 2.0 and < 0.47 at 3.2 mm. We predict the asteroids detectable in other SPT data sets and find good agreement with detections of (772) Tanete and (1093) Freda in recent data from the SPT-3G camera, which has ∼10× the mapping speed of SPTpol. This work is the first focused analysis of asteroids in data from CMB surveys, and it demonstrates we can repurpose historic and future data sets for asteroid studies. Future SPT measurements can help constrain the distribution of surface properties over a larger asteroid population. |
format |
Article in Journal/Newspaper |
author |
Chichura, P. M. Foster, A. Patel, C. Ossa-Jaen, N. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Archipley, M. Austermann, J. E. Avva, J. S. Balkenhol, L. Barry, Peter Thakur, R. Basu Beall, J. A. Benabed, K. Bender, A. N. Benson, B. A. Bianchini, F. Bleem, L. E. Bouchet, F. R. Bryant, L. Byrum, K. Carlstrom, J. E. Carter, F. W. Cecil, T. W. Chang, C. L. Chaubal, P. Chen, G. Chiang, H. C. Cho, H.-M. Chou, T-L. Citron, R. Cliche, J.-F. Crawford, T. M. Crites, A. T. Cukierman, A. Daley, C. M. Denison, E. V. Dibert, K. Ding, J. Dobbs, M. A. Dutcher, D. Everett, W. Feng, C. Ferguson, K. R. Fu, J. Galli, S. Gallicchio, J. Gambrel, A. E. Gardner, R. W. |
spellingShingle |
Chichura, P. M. Foster, A. Patel, C. Ossa-Jaen, N. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Archipley, M. Austermann, J. E. Avva, J. S. Balkenhol, L. Barry, Peter Thakur, R. Basu Beall, J. A. Benabed, K. Bender, A. N. Benson, B. A. Bianchini, F. Bleem, L. E. Bouchet, F. R. Bryant, L. Byrum, K. Carlstrom, J. E. Carter, F. W. Cecil, T. W. Chang, C. L. Chaubal, P. Chen, G. Chiang, H. C. Cho, H.-M. Chou, T-L. Citron, R. Cliche, J.-F. Crawford, T. M. Crites, A. T. Cukierman, A. Daley, C. M. Denison, E. V. Dibert, K. Ding, J. Dobbs, M. A. Dutcher, D. Everett, W. Feng, C. Ferguson, K. R. Fu, J. Galli, S. Gallicchio, J. Gambrel, A. E. Gardner, R. W. Asteroid measurements at millimeter wavelengths with the South Pole telescope |
author_facet |
Chichura, P. M. Foster, A. Patel, C. Ossa-Jaen, N. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Archipley, M. Austermann, J. E. Avva, J. S. Balkenhol, L. Barry, Peter Thakur, R. Basu Beall, J. A. Benabed, K. Bender, A. N. Benson, B. A. Bianchini, F. Bleem, L. E. Bouchet, F. R. Bryant, L. Byrum, K. Carlstrom, J. E. Carter, F. W. Cecil, T. W. Chang, C. L. Chaubal, P. Chen, G. Chiang, H. C. Cho, H.-M. Chou, T-L. Citron, R. Cliche, J.-F. Crawford, T. M. Crites, A. T. Cukierman, A. Daley, C. M. Denison, E. V. Dibert, K. Ding, J. Dobbs, M. A. Dutcher, D. Everett, W. Feng, C. Ferguson, K. R. Fu, J. Galli, S. Gallicchio, J. Gambrel, A. E. Gardner, R. W. |
author_sort |
Chichura, P. M. |
title |
Asteroid measurements at millimeter wavelengths with the South Pole telescope |
title_short |
Asteroid measurements at millimeter wavelengths with the South Pole telescope |
title_full |
Asteroid measurements at millimeter wavelengths with the South Pole telescope |
title_fullStr |
Asteroid measurements at millimeter wavelengths with the South Pole telescope |
title_full_unstemmed |
Asteroid measurements at millimeter wavelengths with the South Pole telescope |
title_sort |
asteroid measurements at millimeter wavelengths with the south pole telescope |
publisher |
American Astronomical Society |
publishDate |
2022 |
url |
https://orca.cardiff.ac.uk/id/eprint/152554/ https://doi.org/10.3847/1538-4357/ac89ec https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf Chichura, P. M., Foster, A., Patel, C., Ossa-Jaen, N., Ade, P. A. R. https://orca.cardiff.ac.uk/view/cardiffauthors/A0479492.html orcid:0000-0002-5127-0401 orcid:0000-0002-5127-0401, Ahmed, Z., Anderson, A. J., Archipley, M., Austermann, J. E., Avva, J. S., Balkenhol, L., Barry, Peter https://orca.cardiff.ac.uk/view/cardiffauthors/A0962246.html, Thakur, R. Basu, Beall, J. A., Benabed, K., Bender, A. N., Benson, B. A., Bianchini, F., Bleem, L. E., Bouchet, F. R., Bryant, L., Byrum, K., Carlstrom, J. E., Carter, F. W., Cecil, T. W., Chang, C. L., Chaubal, P., Chen, G., Chiang, H. C., Cho, H.-M., Chou, T-L., Citron, R., Cliche, J.-F., Crawford, T. M., Crites, A. T., Cukierman, A., Daley, C. M., Denison, E. V., Dibert, K., Ding, J., Dobbs, M. A., Dutcher, D., Everett, W., Feng, C., Ferguson, K. R., Fu, J., Galli, S., Gallicchio, J., Gambrel, A. E., Gardner, R. W., George, E. M., Goeckner-Wald, N., Gualtieri, R., Guns, S., Gupta, N., Guyser, R., Haan, T. de, Halverson, N. W., Harke-Hosemann, A. H., Harrington, N. L., Henning, J. W., Hilton, G. C., Hivon, E., Holder, G. P., Holzapfel, W. L., Hood, J. C., Howe, D., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Jeong, O. B., Jonas, M., Jones, A., Khaire, T. S., Knox, L., Kofman, A. M., Korman, M., Kubik, D. L., Kuhlmann, S., Kuo, C.-L., Lee, A. T., Leitch, E. M., Li, D., Lowitz, A., Lu, C., Marrone, D. P., McMahon, J. J., Meyer, S. S., Michalik, D., Millea, M., Mocanu, L. M., Montgomery, J., Moran, C. Corbett, Nadolski, A., Natoli, T., Nguyen, H., Nibarger, J. P., Noble, G., Novosad, V., Omori, Y., Padin, S., Pan, Z., Paschos, P., Patil, S., Pearson, J., Phadke, K. A., Posada, C. M., Prabhu, K., Pryke, C., Quan, W., Rahlin, A., Reichardt, C. L., Riebel, D., Riedel, B., Rouble, M., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Schiappucci, E., Shirokoff, E., Sievers, C., Smecher, G., Sobrin, J. A., Springmann, A., Stark, A. A., Stephen, J., Story, K. T., Suzuki, A., Tandoi, C., Thompson, K. L., Thorne, B., Tucker, C. https://orca.cardiff.ac.uk/view/cardiffauthors/A016987K.html orcid:0000-0002-1851-3918 orcid:0000-0002-1851-3918, Umilta, C., Vale, L. R., Veach, T., Vieira, J. D., Wang, G., Whitehorn, N., Wu, W. L. K., Yefremenko, V., Yoon, K. W. and Young, M. R. 2022. Asteroid measurements at millimeter wavelengths with the South Pole telescope. Astrophysical Journal 936 (2) , 173. 10.3847/1538-4357/ac89ec https://doi.org/10.3847/1538-4357%2Fac89ec file https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf doi:10.3847/1538-4357/ac89ec |
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The Astrophysical Journal |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:152554 2023-05-15T18:22:10+02:00 Asteroid measurements at millimeter wavelengths with the South Pole telescope Chichura, P. M. Foster, A. Patel, C. Ossa-Jaen, N. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Archipley, M. Austermann, J. E. Avva, J. S. Balkenhol, L. Barry, Peter Thakur, R. Basu Beall, J. A. Benabed, K. Bender, A. N. Benson, B. A. Bianchini, F. Bleem, L. E. Bouchet, F. R. Bryant, L. Byrum, K. Carlstrom, J. E. Carter, F. W. Cecil, T. W. Chang, C. L. Chaubal, P. Chen, G. Chiang, H. C. Cho, H.-M. Chou, T-L. Citron, R. Cliche, J.-F. Crawford, T. M. Crites, A. T. Cukierman, A. Daley, C. M. Denison, E. V. Dibert, K. Ding, J. Dobbs, M. A. Dutcher, D. Everett, W. Feng, C. Ferguson, K. R. Fu, J. Galli, S. Gallicchio, J. Gambrel, A. E. Gardner, R. W. 2022-09-13 application/pdf https://orca.cardiff.ac.uk/id/eprint/152554/ https://doi.org/10.3847/1538-4357/ac89ec https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf en eng American Astronomical Society https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf Chichura, P. M., Foster, A., Patel, C., Ossa-Jaen, N., Ade, P. A. R. https://orca.cardiff.ac.uk/view/cardiffauthors/A0479492.html orcid:0000-0002-5127-0401 orcid:0000-0002-5127-0401, Ahmed, Z., Anderson, A. J., Archipley, M., Austermann, J. E., Avva, J. S., Balkenhol, L., Barry, Peter https://orca.cardiff.ac.uk/view/cardiffauthors/A0962246.html, Thakur, R. Basu, Beall, J. A., Benabed, K., Bender, A. N., Benson, B. A., Bianchini, F., Bleem, L. E., Bouchet, F. R., Bryant, L., Byrum, K., Carlstrom, J. E., Carter, F. W., Cecil, T. W., Chang, C. L., Chaubal, P., Chen, G., Chiang, H. C., Cho, H.-M., Chou, T-L., Citron, R., Cliche, J.-F., Crawford, T. M., Crites, A. T., Cukierman, A., Daley, C. M., Denison, E. V., Dibert, K., Ding, J., Dobbs, M. A., Dutcher, D., Everett, W., Feng, C., Ferguson, K. R., Fu, J., Galli, S., Gallicchio, J., Gambrel, A. E., Gardner, R. W., George, E. M., Goeckner-Wald, N., Gualtieri, R., Guns, S., Gupta, N., Guyser, R., Haan, T. de, Halverson, N. W., Harke-Hosemann, A. H., Harrington, N. L., Henning, J. W., Hilton, G. C., Hivon, E., Holder, G. P., Holzapfel, W. L., Hood, J. C., Howe, D., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Jeong, O. B., Jonas, M., Jones, A., Khaire, T. S., Knox, L., Kofman, A. M., Korman, M., Kubik, D. L., Kuhlmann, S., Kuo, C.-L., Lee, A. T., Leitch, E. M., Li, D., Lowitz, A., Lu, C., Marrone, D. P., McMahon, J. J., Meyer, S. S., Michalik, D., Millea, M., Mocanu, L. M., Montgomery, J., Moran, C. Corbett, Nadolski, A., Natoli, T., Nguyen, H., Nibarger, J. P., Noble, G., Novosad, V., Omori, Y., Padin, S., Pan, Z., Paschos, P., Patil, S., Pearson, J., Phadke, K. A., Posada, C. M., Prabhu, K., Pryke, C., Quan, W., Rahlin, A., Reichardt, C. L., Riebel, D., Riedel, B., Rouble, M., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Schiappucci, E., Shirokoff, E., Sievers, C., Smecher, G., Sobrin, J. A., Springmann, A., Stark, A. A., Stephen, J., Story, K. T., Suzuki, A., Tandoi, C., Thompson, K. L., Thorne, B., Tucker, C. https://orca.cardiff.ac.uk/view/cardiffauthors/A016987K.html orcid:0000-0002-1851-3918 orcid:0000-0002-1851-3918, Umilta, C., Vale, L. R., Veach, T., Vieira, J. D., Wang, G., Whitehorn, N., Wu, W. L. K., Yefremenko, V., Yoon, K. W. and Young, M. R. 2022. Asteroid measurements at millimeter wavelengths with the South Pole telescope. Astrophysical Journal 936 (2) , 173. 10.3847/1538-4357/ac89ec https://doi.org/10.3847/1538-4357%2Fac89ec file https://orca.cardiff.ac.uk/id/eprint/152554/1/pdf.pdf doi:10.3847/1538-4357/ac89ec cc_by_4_0 CC-BY Article PeerReviewed 2022 ftunivcardiff https://doi.org/10.3847/1538-4357/ac89ec 2023-01-19T23:36:02Z We present the first measurements of asteroids in millimeter wavelength data from the South Pole Telescope (SPT), which is used primarily to study the cosmic microwave background (CMB). We analyze maps of two ∼270 deg2 sky regions near the ecliptic plane, each observed with the SPTpol camera ∼100 times over 1 month. We subtract the mean of all maps of a given field, removing static sky signal, and then average the mean-subtracted maps at known asteroid locations. We detect three asteroids—(324) Bamberga, (13) Egeria, and (22) Kalliope—with signal-to-noise ratios (S/N) of 11.2, 10.4, and 6.1, respectively, at 2.0 mm (150 GHz); we also detect (324) Bamberga with an S/N of 4.1 at 3.2 mm (95 GHz). We place constraints on these asteroids’ effective emissivities, brightness temperatures, and light-curve modulation amplitude. Our flux density measurements of (324) Bamberga and (13) Egeria roughly agree with predictions, while our measurements of (22) Kalliope suggest lower flux, corresponding to effective emissivities of 0.64 ± 0.11 at 2.0 and < 0.47 at 3.2 mm. We predict the asteroids detectable in other SPT data sets and find good agreement with detections of (772) Tanete and (1093) Freda in recent data from the SPT-3G camera, which has ∼10× the mapping speed of SPTpol. This work is the first focused analysis of asteroids in data from CMB surveys, and it demonstrates we can repurpose historic and future data sets for asteroid studies. Future SPT measurements can help constrain the distribution of surface properties over a larger asteroid population. Article in Journal/Newspaper South pole Cardiff University: ORCA (Online Research @ Cardiff) South Pole The Astrophysical Journal 936 2 173 |