Skip to content

Research at St Andrews

Redshift measurement and spectral classification for eBOSS galaxies with the redmonster software

Research output: Contribution to journalArticle

Open Access permissions

Open

Author(s)

Timothy A. Hutchinson, Adam S. Bolton, Kyle S. Dawson, Carlos Allende Prieto, Stephen Bailey, Julian E. Bautista, Joel R. Brownstein, Charlie Conroy, Julien Guy, Adam D. Myers, Jeffrey A. Newman, Abhishek Prakash, Aurelio Carnero-Rosell, Hee-Jong Seo, Rita Tojeiro, M. Vivek, Guangtun Ben Zhu

School/Research organisations

Abstract

We describe the redmonster automated redshift measurement and spectral classification software designed for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV). We describe the algorithms, the template standard and requirements, and the newly developed galaxy templates to be used on eBOSS spectra. We present results from testing on early data from eBOSS, where we have found a 90.5% automated redshift and spectral classification success rate for the luminous red galaxy sample (redshifts 0.6 ≲ z ≲ 1.0). The redmonster performance meets the eBOSS cosmology requirements for redshift classification and catastrophic failures and represents a significant improvement over the previous pipeline. We describe the empirical processes used to determine the optimum number of additive polynomial terms in our models and an acceptable ΔXr2 threshold for declaring statistical confidence. Statistical errors on redshift measurement due to photon shot noise are assessed, and we find typical values of a few tens of km s-1. An investigation of redshift differences in repeat observations scaled by error estimates yields a distribution with a Gaussian mean and standard deviation of μ ∼ 0.01 and σ ∼ 0.65, respectively, suggesting the reported statistical redshift uncertainties are over-estimated by ∼54%. We assess the effects of object magnitude, signal-to-noise ratio, fiber number, and fiber head location on the pipeline's redshift success rate. Finally, we describe directions of ongoing development.

Close

Details

Original languageEnglish
Article number205
Number of pages17
JournalAstronomical Journal
Volume152
Issue number6
DOIs
Publication statusPublished - 2 Dec 2016

    Research areas

  • Methods: data analysis, Surveys, Techniques: spectroscopic

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Decoupling the rotation of stars and gas - II. The link between black hole activity and simulated IFU kinematics in IllustrisTNG

    Duckworth, C., Starkenburg, T. K., Genel, S., Davis, T. A., Habouzit, M., Kraljic, K. & Tojeiro, R., Jul 2020, In : Monthly Notices of the Royal Astronomical Society. 495, 4, p. 4542–4547

    Research output: Contribution to journalArticle

  2. Decoupling the rotation of stars and gas - I. The relationship with morphology and halo spin

    Duckworth, C., Tojeiro, R. & Kraljic, K., Feb 2020, In : Monthly Notices of the Royal Astronomical Society. 492, 2, p. 1869-1886

    Research output: Contribution to journalArticle

  3. Speculator: emulating stellar population synthesis for fast and accurate galaxy spectra and photometry

    Alsing, J., Peiris, H., Leja, J., Hahn, C., Tojeiro, R., Mortlock, D., Leistedt, B., Johnson, B. D. & Conroy, C., 1 Nov 2019, In : ArXiv e-prints.

    Research output: Contribution to journalArticle

  4. The VIMOS Public Extragalactic Redshift Survey (VIPERS). Environment-size relation of massive passive galaxies at 0.5 ≤ z ≤ 0.8

    Gargiulo, A., Cucciati, O., Garilli, B., Scodeggio, M., Bolzonella, M., Zamorani, G., De Lucia, G., Krywult, J., Guzzo, L., Granett, B. R., de la Torre, S., Abbas, U., Adami, C., Arnouts, S., Bottini, D., Cappi, A., Franzetti, P., Fritz, A., Haines, C., Hawken, A. J. & 19 others, Iovino, A., Le Brun, V., Le Fèvre, O., Maccagni, D., Małek, K., Marulli, F., Moutard, T., Polletta, M., Pollo, A., Tasca, L. A. M., Tojeiro, R., Vergani, D., Zanichelli, A., Bel, J., Branchini, E., Coupon, J., Ilbert, O., Moscardini, L. & Peacock, J. A., Nov 2019, In : Astronomy & Astrophysics. 631, 11 p., A15.

    Research output: Contribution to journalArticle

  5. Data-driven education and public outreach with the Sloan Digital Sky Survey

    Lundgren, B., Tojeiro, R., Beaton, R. L., Blanton, M. R., Borissova, J., Cano-Díaz, M., Grabowski, K., Kurtev, R., MacDonald, N., Majewski, S. R., Masters, K. L., Meredith, K., Nitschelm, C., O'Reilly, T., Raddick, J., Skinner, D., Thakar, A., Weijmans, A. & Whelan, D. G., 1 Aug 2019, In : Boletín de la Asociación Argentina de Astronomía. 61A, p. 261-267

    Research output: Contribution to journalArticle

Related by journal

  1. A pair of TESS planets spanning the radius valley around the nearby mid-M dwarf LTT 3780

    Cloutier, R., Eastman, J. D., Rodriguez, J. E., Astudillo-Defru, N., Bonfils, X., Mortier, A., Watson, C. A., Stalport, M., Pinamonti, M., Lienhard, F., Harutyunyan, A., Damasso, M., Latham, D. W., Collins, K. A., Massey, R., Irwin, J., Winters, J. G., Charbonneau, D., Ziegler, C., Matthews, E. & 67 others, Crossfield, I. J. M., Kreidberg, L., Quinn, S. N., Ricker, G., Vanderspek, R., Seager, S., Winn, J., Jenkins, J. M., Vezie, M., Udry, S., Twicken, J. D., Tenenbaum, P., Sozzetti, A., Ségransan, D., Schlieder, J. E., Sasselov, D., Santos, N. C., Rice, K., Rackham, B. V., Poretti, E., Piotto, G., Phillips, D., Pepe, F., Molinari, E., Mignon, L., Micela, G., Melo, C., de Medeiros, J. R., Mayor, M., Matson, R. A., Martinez Fiorenzano, A. F., Mann, A. W., Magazzú, A., Lovis, C., López-Morales, M., Lopez, E., Lissauer, J. J., Lépine, S., Law, N., Kielkopf, J. F., Johnson, J. A., Jensen, E. L. N., Howell, S. B., Gonzales, E., Ghedina, A., Forveille, T., Figueira, P., Dumusque, X., Dressing, C. D., Doyon, R., Díaz, R. F., Fabrizio, L. D., Delfosse, X., Cosentino, R., Conti, D. M., Collins, K. I., Cameron, A. C., Ciardi, D., Caldwell, D. A., Burke, C., Buchhave, L., Briceño, C., Boyd, P., Bouchy, F., Beichman, C., Artigau, É. & Almenara, J. M., Jul 2020, In : Astronomical Journal. 160, 1, 21 p., 3.

    Research output: Contribution to journalArticle

  2. Erratum: “An 11 Earth-mass, long-period sub-Neptune orbiting a Sun-like star” (2019, AJ, 158, 165)

    Mayo, A. W., Rajpaul, V. M., Buchhave, L. A., Dressing, C. D., Mortier, A., Zeng, L., Fortenbach, C. D., Aigrain, S., Bonomo, A. S., Collier Cameron, A., Charbonneau, D., Coffinet, A., Cosentino, R., Damasso, M., Dumusque, X., Martinez Fiorenzano, A. F., Haywood, R. D., Latham, D. W., López-Morales, M., Malavolta, L. & 10 others, Micela, G., Molinari, E., Pearce, L., Pepe, F., Phillips, D., Piotto, G., Poretti, E., Rice, K., Sozzetti, A. & Udry, S., Jan 2020, In : Astronomical Journal. 159, 1, 2 p., 34.

    Research output: Contribution to journalArticle

  3. OGLE-2013-BLG-0911Lb: a secondary on the brown-dwarf planet boundary around an M-dwarf

    Miyazaki, S., Sumi, T., Bennett, D. P., Udalski, A., Shvartzvald, Y., Street, R., Bozza, V., Yee, J. C., Bond, I. A., Rattenbury, N., Koshimoto, N., Suzuki, D., Fukui, A., Abe, F., Bhattacharya, A., Barry, R., Donachie, M., Fujii, H., Hirao, Y., Itow, Y. & 76 others, Kamei, Y., Kondo, I., Li, M. C. A., Ling, C. H., Matsubara, Y., Matsuo, T., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Saito, T., Sharan, A., Shibai, H., Suematsu, H., Sullivan, D. J., Tristram, P. J., Yamakawa, T., Yonehara, A., Skowron, J., Poleski, R., Mróz, P., Szymański, M. K., Soszyński, I., Pietrukowicz, P., KozŁowski, S., Ulaczyk, K., Wyrzykowski, L., Friedmann, M., Kaspi, S., Maoz, D., Albrow, M., Christie, G., DePoy, D. L., Gal-Yam, A., Gould, A., Lee, C. -U., Manulis, I., McCormick, J., Natusch, T., Ngan, H., Pogge, R. W., Porritt, I., Tsapras, Y., Bachelet, E., Hundertmark, M. P. G., Dominik, M., Bramich, D. M., Cassan, A., Jaimes, R. F., Horne, K., Schmidt, R., Snodgrass, C., Wambsganss, J., Steele, I. A., Menzies, J., Mao, S., Jørgensen, U. G., Burgdorf, M. J., Ciceri, S., Novati, S. C., D'Ago, G., Evans, D. F., Hinse, T. C., Kains, N., Kerins, E., Korhonen, H., Mancini, L., Popovas, A., Rabus, M., Rahvar, S., Scarpetta, G., Skottfelt, J., Southworth, J., D'Ago, G., Peixinho, N. & Verma, P., 31 Jan 2020, In : Astronomical Journal. 159, 2, 15 p., 76.

    Research output: Contribution to journalArticle

  4. OGLE-2017-BLG-0406: Spitzer microlens parallax reveals Saturn-mass planet orbiting M-dwarf host in the inner galactic disk

    Hirao, Y., Bennett, D. P., Ryu, Y-H., Koshimoto, N., Udalski, A., Yee, J. C., Sumi, T., Bond, I. A., Shvartzvald, Y., Abe, F., Barry, R. K., Bhattacharya, A., Donachie, M., Fukui, A., Itow, Y., Kondo, I., Li, M. C. A., Matsubara, Y., Matsuo, T., Miyazaki, S. & 76 others, Muraki, Y., Nagakane, M., Ranc, C., Rattenbury, N. J., Suematsu, H., Shibai, H., Suzuki, D., Tristram, P. J., Yonehara, A., Skowron, J., Poleski, R., Mroz, P., Szymanski, M. K., Soszynski, I., Kozlowski, S., Pietrukowicz, P., Ulaczyk, K., Rybicki, K., Iwanek, P., Albrow, M. D., Chung, S-J., Gould, A., Han, C., Hwang, K-H., Jung, Y. K., Shin, I-G., Zang, W., Cha, S-M., Kim, D-J., Kim, H-W., Kim, S-L., Lee, C-U., Lee, D-J., Lee, Y., Park, B-G., Pogge, R. W., Beichman, C. A., Bryden, G., Calchi Novati, S., Carey, S., Gaudi, B. S., Henderson, C. B., Zhu, W., Bachelet, E., Bolt, G., Christie, G., Hundertmark, M., Natusch, T., Maoz, D., McCormick, J., Street, R. A., Tan, T-G., Tsapras, Y., Jorgensen, U. G., Dominik, M., Bozza, V., Skottfelt, J., Snodgrass, C., Ciceri, S., Figuera Jaimes, R., Evans, D. F., Peixinho, N., Hinse, T. C., Burgdorf, M. J., Southworth, J., Rahvar, S., Sajadian, S., Rabus, M., von Essen, C., Fujii, Y. I., Campbell-White, J., Lowry, S., Helling, C., Mancini, L., Haikala, L. & Kandori, R., 6 Jun 2020, (Accepted/In press) In : Astronomical Journal.

    Research output: Contribution to journalArticle

  5. TOI-1235 b: a keystone super-earth for testing radius valley emergence models around early M dwarfs

    Cloutier, R., Rodriguez, J. E., Irwin, J., Charbonneau, D., Stassun, K. G., Mortier, A., Latham, D. W., Isaacson, H., Howard, A. W., Udry, S., Wilson, T. G., Watson, C. A., Pinamonti, M., Lienhard, F., Giacobbe, P., Guerra, P., Collins, K. A., Beiryla, A., Esquerdo, G. A., Matthews, E. & 68 others, Matson, R. A., Howell, S. B., Furlan, E., Crossfield, I. J. M., Winters, J. G., Nava, C., Ment, K., Lopez, E. D., Ricker, G., Vanderspek, R., Seager, S., Jenkins, J. M., Ting, E. B., Tenenbaum, P., Sozzetti, A., Sha, L., Ségransan, D., Schlieder, J. E., Sasselov, D., Roy, A., Robertson, P., Rice, K., Poretti, E., Piotto, G., Phillips, D., Pepper, J., Pepe, F., Molinari, E., Mocnik, T., Micela, G., Mayor, M., Martinez Fiorenzano, A. F., Mallia, F., Lubin, J., Lovis, C., López-Morales, M., Kosiarek, M. R., Kielkopf, J. F., Kane, S. R., Jensen, E. L. N., Isopi, G., Huber, D., Hill, M. L., Harutyunyan, A., Gonzales, E., Giacalone, S., Ghedina, A., Ercolino, A., Dumusque, X., Dressing, C. D., Damasso, M., Dalba, P. A., Cosentino, R., Conti, D. M., Colón, K. D., Collins, K. I., Cameron, A. C., Ciardi, D., Christiansen, J., Chontos, A., Cecconi, M., Caldwell, D. A., Burke, C., Buchhave, L., Beichman, C., Behmard, A., Beard, C. & Akana Murphy, J. M., Jul 2020, In : Astronomical Journal. 160, 1, 22.

    Research output: Contribution to journalArticle

ID: 249005399

Top