Search Results - "Porto de Mello, Gustavo F"

The most common habitable planets III – modelling temperature forcing and surface conditions on rocky exoplanets and exomoons by B Siffert, Beatriz, G Gonçalves Farias, Raquel, Garcia, Matias, Melo de Menezes, Luiz Felipe, Porto de Mello, Gustavo F, Borges Fernandes, Marcelo, Pinotti, Rafael

“…Small rocky planets, as well as larger planets that suffered extensive volatile loss, tend to be drier and have thinner atmospheres as compared to Earth. Such…”
Get full text

M dwarf spectral indices at moderate resolution: accurate Teff and [Fe/H] for 178 southern stars by Costa-Almeida, Ellen, de Mello, Gustavo F Porto, Giribaldi, Riano E, Lorenzo-Oliveira, Diego, Ubaldo-Melo, Maria L

“…ABSTRACT We present a spectroscopic and photometric calibration to derive effective temperatures Teff and metallicities [Fe/H] for M dwarfs, based on a…”
Get full text

Protective Effects of Halite to Vacuum and Vacuum-Ultraviolet Radiation: A Potential Scenario During a Young Sun Superflare by Abrevaya, Ximena C, Galante, Douglas, Tribelli, Paula M, Oppezzo, Oscar J, Nóbrega, Felipe, Araujo, Gabriel G, Rodrigues, Fabio, Odert, Petra, Leitzinger, Martin, Ricardi, Martiniano M, Varela, Maria Eugenia, Gallo, Tamires, Sanz-Forcada, Jorge, Ribas, Ignasi, Porto de Mello, Gustavo F, Rodler, Florian, Cerini, Maria Fernanda, Hanslmeier, Arnold, Horvath, Jorge E

“…Halite (NaCl mineral) has exhibited the potential to preserve microorganisms for millions of years on Earth. This mineral was also identified on Mars and in…”
Get more information

The Most Common Habitable Planets III -- Modeling Temperature Forcing and Surface Conditions on Rocky Exoplanets and Exomoons by Siffert, Beatriz B, Farias, Raquel G. Gonçalves, Garcia, Matias, de Menezes, Luiz Felipe Melo, de Mello, Gustavo F. Porto, Fernandes, Marcelo Borges, Pinotti, Rafael

“…MNRAS 530, 4331-4345 (2024) Small rocky planets, as well as larger planets that suffered extensive volatile loss, tend to be drier and have thinner atmospheres…”
Get full text

Protective Effects of Halite to Vacuum and Vacuum-Ultraviolet Radiation: A Potential Scenario During a Young Sun Superflare by Abrevaya, Ximena C, Galante, Douglas, Tribelli, Paula M, Oppezzo, Oscar J, Nobrega, Felipe, Araujo, Gabriel G, Rodrigues, Fabio, Odert, Petra, Leitzinger, Martin, Ricardi, Martiniano M, Varela, Maria Eugenia, Gallo, Tamires, Sanz-Forcada, Jorge, Ribas, Ignasi, de Mello, Gustavo F. Porto, Rodler, Florian, Cerini, 1 Maria Fernanda, Hanslmeier, Arnold, Horvath, Jorge E

“…Astrobiology 2023;23(3):245-268 Halite (NaCl mineral) has exhibited the potential to preserve microorganisms for millions of years on Earth. This mineral was…”
Get full text

MARVELS-1: A FACE-ON DOUBLE-LINED BINARY STAR MASQUERADING AS A RESONANT PLANETARY SYSTEM AND CONSIDERATION OF RARE FALSE POSITIVES IN RADIAL VELOCITY PLANET SEARCHES by Wright, Jason T., Roy, Arpita, Mahadevan, Suvrath, Wang, Sharon X., Ford, Eric B., Payne, Matt, Lee, Brian L., Wang, Ji, Crepp, Justin R., Gaudi, B. Scott, Eastman, Jason, Pepper, Joshua, Ge, Jian, Fleming, Scott W., Ghezzi, Luan, González-Hernández, Jonay I., Cargile, Phillip, Stassun, Keivan G., Wisniewski, John, Dutra-Ferreira, Leticia, de Mello, Gustavo F. Porto, Maia, Márcio A. G., da Costa, Luiz Nicolaci, Ogando, Ricardo L. C., Santiago, Basilio X., Schneider, Donald P., Hearty, Fred R.

Get full text

Faint solar analogs: at the limit of no reddening by Giribaldi, Riano E, de Mello, Gustavo F. Porto, Lorenzo-Oliveira, Diego, Amôres, Eduardo B, Ubaldo-Melo, Maria L

“…A&A 629, A33 (2019) The flux distribution of solar analogs is required for calculating the spectral albedo of Solar System bodies such as asteroids and…”
Get full text

The age-mass-metallicity-activity relation for solar-type stars: Comparisons with asteroseismology and the NGC 188 open cluster by Lorenzo-Oliveira, Diego, de Mello, Gustavo F. Porto, Schiavon, Ricardo P

“…A&A 594, L3 (2016) The Mount Wilson Ca II index log$(R'_{\rm HK})$ is the accepted standard metric of calibration for the chromospheric activity versus age…”
Get full text

Chemo-kinematics of the Milky Way from the SDSS-III MARVELS Survey by Grieves, Nolan, Ge, Jian, Thomas, Neil, Willis, Kevin, Ma, Bo, Lorenzo-Oliveira, Diego, Queiroz, A. B. A, Ghezzi, Luan, Chiappini, Cristina, Anders, Friedrich, Dutra-Ferreira, Letícia, de Mello, Gustavo F. Porto, Santiago, Basílio X, da Costa, Luiz N, Ogando, Ricardo L. C, del Peloso, E. F, Tan, Jonathan C, Schneider, Donald P, Pepper, Joshua, Stassun, Keivan G, Zhao, Bo, Bizyaev, Dmitry, Pan, Kaike

“…Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 3, p.3244-3265 December 2018 Combining stellar atmospheric parameters, such as effective…”
Get full text

Fine structure of the age-chromospheric activity relation in solar-type stars I: The Ca II infrared triplet: Absolute flux calibration by Lorenzo-Oliveira, Diego, de Mello, Gustavo F. Porto, Dutra-Ferreira, Letícia, Ribas, Ignasi

“…A&A 595, A11 (2016) Strong spectral lines are useful indicators of stellar chromospheric activity. They are physically linked to the convection efficiency,…”
Get full text

Exploring the brown dwarf desert: new substellar companions from the SDSS-III MARVELS survey by Grieves, Nolan, Ge, Jian, Thomas, Neil, Ma, Bo, Sithajan, Sirinrat, Ghezzi, Luan, Kimock, Ben, Willis, Kevin, De Lee, Nathan, Lee, Brian, Fleming, Scott W., Agol, Eric, Troup, Nicholas, Paegert, Martin, Schneider, Donald P., Stassun, Keivan, Varosi, Frank, Zhao, Bo, Jian, Liu, Li, Rui, Porto de Mello, Gustavo F., Bizyaev, Dmitry, Pan, Kaike, Dutra-Ferreira, Letícia, Lorenzo-Oliveira, Diego, Santiago, Basílio X., da Costa, Luiz N., Maia, Marcio A. G., Ogando, Ricardo L. C., del Peloso, E. F.

Get full text

Consistent metallicity scale for cool dwarfs and giants. A benchmark test using the Hyades by Dutra-Ferreira, Letícia, Pasquini, Luca, Smiljanic, Rodolfo, de Mello, Gustavo F. Porto, Steffen, Matthias

“…A&A 585, A75 (2016) In several instances chemical abundances of dwarf and giant stars are used simultaneously under the assumption that they share the same…”
Get full text

Exploring the Brown Dwarf Desert: New Substellar Companions from the SDSS-III MARVELS Survey by Grieves, Nolan, Ge, Jian, Thomas, Neil, Ma, Bo, Sithajan, Sirinrat, Ghezzi, Luan, Kimock, Ben, Willis, Kevin, De Lee, Nathan, Lee, Brian, Fleming, Scott W, Agol, Eric, Troup, Nicholas, Paegert, Martin, Schneider, Donald P, Stassun, Keivan, Varosi, Frank, Zhao, Bo, Liu, Jian, Li, Rui, de Mello, Gustavo F. Porto, Bizyaev, Dmitry, Pan, Kaike, Dutra-Ferreira, Leticia, Lorenzo-Oliveira, Diego, Santiago, Basilio X, da Costa, Luiz N, Maia, Marcio A. G, Ogando, Ricardo L. C, del Peloso, E. F

“…Planet searches using the radial velocity technique show a paucity of companions to solar-type stars within ~5 AU in the mass range of ~10 - 80…”
Get full text

MARVELS-1: A FACE-ON DOUBLE-LINED BINARY STAR MASQUERADING AS A RESONANT PLANETARY SYSTEM AND CONSIDERATION OF RARE FALSE POSITIVES IN RADIAL VELOCITY PLANET SEARCHES by Wright, Jason T, Roy, Arpita, Mahadevan, Suvrath, Wang, Sharon X, d, Eric B, Payne, Matt, Lee, Brian L, Wang, Ji, CREPP, JUSTIN R, Gaudi, B Scott

“…We have analyzed new and previously published radial velocity (RV) observations of MARVELS-1, known to have an ostensibly substellar companion in a ~6 day…”
Get full text

Mn, Cu and Zn abundances in barium stars and their correlations with neutron capture elements by Allen, Dinah M, de Mello, Gustavo F. Porto

“…We present abundances of Mn, Cu, Zn and various light and heavy elements for a sample of barium and normal giant stars, and present correlations between…”
Get full text

Accurate Atmospheric Parameters at Moderate Resolution Using Spectral Indices: Preliminary Application to the MARVELS Survey by Ghezzi, Luan, Dutra-Ferreira, Letícia, Lorenzo-Oliveira, Diego, de Mello, Gustavo F. Porto, Santiago, Basílio X, De Lee, Nathan, Lee, Brian L, da Costa, Luiz N, Maia, Marcio A. G, Ogando, Ricardo L. C, Wisniewski, John P, Hernández, Jonay I. González, Stassun, Keivan G, Fleming, Scott W, Schneider, Donald P, Mahadevan, Suvrath, Cargile, Phillip, Ge, Jian, Pepper, Joshua, Wang, Ji

“…Studies of Galactic chemical and dynamical evolution in the solar neighborhood depend on the availability of precise atmospheric parameters (Teff, [Fe/H] and…”
Get full text

MARVELS-1: A face-on double-lined binary star masquerading as a resonant planetary system; and consideration of rare false positives in radial velocity planet searches by Wright, Jason T, Roy, Arpita, Mahadevan, Suvrath, Wang, Sharon X, Ford, Eric B, Payne, Matt, Lee, Brian L, Wang, Ji, Crepp, Justin R, Gaudi, B. Scott, Eastman, Jason, Pepper, Joshua, Ge, Jian, Fleming, Scott W, Ghezzi, Luan, Gonzalez-Hernandez, Jonay I, Cargile, Phillip, Stassun, Keivan G, Wisniewski, John, Dutra-Ferreira, Leticia, de Mello, Gustavo F. Porto, Maia, Marcio A. G, da Costa, Luiz Nicolaci, Ogando, Ricardo L. C, Santiago, Basilio X, Schneider, Donald P, Hearty, Fred R

“…We have analyzed new and previously published radial velocity observations of MARVELS-1, known to have an ostensibly substellar companion in a ~6- day orbit…”
Get full text

Very Low Mass Stellar and Substellar Companions to Solar-like Stars From MARVELS IV: A Candidate Brown Dwarf or Low-Mass Stellar Companion to HIP 67526 by Jiang, Peng, Ge, Jian, Cargile, Phillip, Crepp, Justin R, De Lee, Nathan, de Mello, Gustavo F. Porto, Esposito, Massimiliano, Ferreira, Letícia D, Femenia, Bruno, Fleming, Scott W, Gaudi, B. Scott, Ghezzi, Luan, Hernández, Jonay I. González, Hebb, Leslie, Lee, Brian L, Ma, Bo, Stassun, Keivan G, Wang, Ji, Wisniewski, John P, Agol, Eric, Bizyaev, Dmitry, Brewington, Howard, Chang, Liang, da Costa, Luiz Nicolaci, Eastman, Jason D, Ebelke, Garrett, Gary, Bruce, Kane, Stephen R, Li, Rui, Liu, Jian, Mahadevan, Suvrath, Maia, Marcio A. G, Malanushenko, Viktor, Malanushenko, Elena, Muna, Demitri, Nguyen, Duy Cuong, Ogando, Ricardo L. C, Oravetz, Audrey, Oravetz, Daniel, Pan, Kaike, Pepper, Joshua, Paegert, Martin, Prieto, Carlos Allende, Rebolo, Rafael, Santiago, Basilio X, Schneider, Donald P, Bradley, Alaina C. Shelden, Sivarani, Thirupathi, Snedden, Stephanie, van Eyken, J. C, Wan, Xiaoke, Weaver, Benjamin A, Zhao, Bo

“…We report the discovery of a candidate brown dwarf or a very low mass stellar companion (MARVELS-5b) to the star HIP 67526 from the Multi-object APO Radial…”
Get full text

Eclipsing Binary Science Via the Merging of Transit and Doppler Exoplanet Survey Data - A Case Study With the MARVELS Pilot Project and SuperWASP by Fleming, Scott W, Maxted, Pierre F. L, Hebb, Leslie, Stassun, Keivan G, Ge, Jian, Cargile, Phillip A, Ghezzi, Luan, De Lee, Nathan M, Wisniewski, John, Gary, Bruce, de Mello, Gustavo F. Porto, Ferreira, Leticia, Zhao, Bo, Anderson, David R, Wan, Xiaoke, Hellier, Coel, Guo, Pengcheng, West, Richard G, Mahadevan, Suvrath, Pollacco, Don, Lee, Brian, Cameron, Andrew Collier, van Eyken, Julian C, Skillen, Ian, Crepp, Justin R, Nguyen, Duy Cuong, Kane, Stephen R, Paegert, Martin, da Costa, Luiz Nicolaci, Maia, Marcio A. G, Santiago, Basilio X

“…Exoplanet transit and Doppler surveys discover many binary stars during their operation that can be used to conduct a variety of ancillary science…”
Get full text

Very Low-mass Stellar and Substellar Companions to Solar-like Stars from MARVELS II: A Short-period Companion Orbiting an F Star with Evidence of a Stellar Tertiary And Significant Mutual Inclination by Fleming, Scott W, Ge, Jian, Barnes, Rory, Beatty, Thomas G, Crepp, Justin R, De Lee, Nathan, Esposito, Massimiliano, Femenia, Bruno, Ferreira, Leticia, Gary, Bruce, Gaudi, B. Scott, Ghezzi, Luan, Hernández, Jonay I. González, Hebb, Leslie, Jiang, Peng, Lee, Brian, Nelson, Ben, de Mello, Gustavo F. Porto, Shappee, Benjamin J, Stassun, Keivan, Thompson, Todd A, Tofflemire, Benjamin M, Wisniewski, John P, Wood-Vasey, W. Michael, Agol, Eric, Prieto, Carlos Allende, Bizyaev, Dmitry, Brewington, Howard, Cargile, Phillip A, Coban, Louis, Costello, Korena S, da Costa, Luis N, Good, Melanie L, Hua, Nelson, Kane, Stephen R, Lander, Gary R, Liu, Jian, Ma, Bo, Mahadevan, Suvrath, Maia, Marcio A. G, Malanushenko, Elena, Malanushenko, Viktor, Muna, Demitri, Nguyen, Duy Cuong, Oravetz, Daniel, Paegert, Martin, Pan, Kaike, Pepper, Joshua, Rebolo, Rafael, Roebuck, Eric J, Santiago, Basilio X, Schneider, Donald P, Shelden, Alaina, Simmons, Audrey, Sivarani, Thirupathi, Snedden, Stephanie, Vincent, Chelsea L. M, Wan, Xiaoke, Wang, Ji, Weaver, Benjamin A, Weaver, Gwendolyn M, Zhao, Bo

“…We report the discovery via radial velocity of a short-period (P = 2.430420 \pm 0.000006 days) companion to the F-type main sequence star TYC 2930-00872-1. A…”
Get full text